/*
 * Smart GWT (GWT for SmartClient)
 * Copyright 2008 and beyond, Isomorphic Software, Inc.
 *
 * Smart GWT is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.  Smart GWT is also
 * available under typical commercial license terms - see
 * http://smartclient.com/license
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 */
/* sgwtgen */
 
package com.smartgwt.client.widgets.tree;


import com.smartgwt.client.event.*;
import com.smartgwt.client.core.*;
import com.smartgwt.client.types.*;
import com.smartgwt.client.data.*;
import com.smartgwt.client.data.Record;
import com.smartgwt.client.data.events.*;
import com.smartgwt.client.browser.window.*;
import com.smartgwt.client.rpc.*;
import com.smartgwt.client.ai.*;
import com.smartgwt.client.callbacks.*;
import com.smartgwt.client.tools.*;
import com.smartgwt.client.bean.*;
import com.smartgwt.client.widgets.*;
import com.smartgwt.client.widgets.ai.*;
import com.smartgwt.client.widgets.events.*;
import com.smartgwt.client.widgets.form.*;
import com.smartgwt.client.widgets.form.validator.*;
import com.smartgwt.client.widgets.form.fields.*;
import com.smartgwt.client.widgets.tile.*;
import com.smartgwt.client.widgets.tile.events.*;
import com.smartgwt.client.widgets.grid.*;
import com.smartgwt.client.widgets.grid.events.*;
import com.smartgwt.client.widgets.chart.*;
import com.smartgwt.client.widgets.layout.*;
import com.smartgwt.client.widgets.layout.events.*;
import com.smartgwt.client.widgets.menu.*;
import com.smartgwt.client.widgets.tour.*;
import com.smartgwt.client.widgets.notify.*;
import com.smartgwt.client.widgets.rte.*;
import com.smartgwt.client.widgets.rte.events.*;
import com.smartgwt.client.widgets.ace.*;
import com.smartgwt.client.widgets.ace.events.*;
import com.smartgwt.client.widgets.tab.*;
import com.smartgwt.client.widgets.toolbar.*;
import com.smartgwt.client.widgets.tree.*;
import com.smartgwt.client.widgets.tree.events.*;
import com.smartgwt.client.widgets.tableview.*;
import com.smartgwt.client.widgets.viewer.*;
import com.smartgwt.client.widgets.calendar.*;
import com.smartgwt.client.widgets.calendar.events.*;
import com.smartgwt.client.widgets.cube.*;
import com.smartgwt.client.widgets.notify.*;
import com.smartgwt.client.widgets.drawing.*;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import com.google.gwt.event.shared.*;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.core.client.JavaScriptObject;

import com.smartgwt.client.util.*;
import com.smartgwt.client.util.events.*;
import com.smartgwt.client.util.workflow.*;
import com.smartgwt.client.util.workflow.Process; // required to override java.lang.Process
import com.smartgwt.client.util.tour.*;


/**
 * ResultTrees are an implementation of the {@link com.smartgwt.client.widgets.tree.Tree} API, used to handle hierarchical
 * data, whose nodes are DataSource records which are retrieved from a server. <P> <b>Modifying ResultTrees</b> <P>
 * <code>ResultTree</code> nodes cannot be directly added or removed from a {@link
 * com.smartgwt.client.widgets.tree.ResultTree#getFetchMode paged} <code>ResultTree</code> via {@link
 * com.smartgwt.client.widgets.tree.Tree} APIs such as {@link com.smartgwt.client.widgets.tree.Tree#add Tree.add()} or
 * {@link com.smartgwt.client.widgets.tree.Tree#remove Tree.remove()}, since such trees are considered to be read-only by
 * virtue of containing {@link com.smartgwt.client.data.ResultSet}s, which are read-only data structures.  Even in other
 * {@link com.smartgwt.client.types.FetchMode}s, calling such APIs will only update the local cache of the ResultTree,
 * rather than triggering any server traffict to update the DataSource. <P> Use {@link
 * com.smartgwt.client.data.DataSource#addData DataSource.addData()}/{@link com.smartgwt.client.data.DataSource#removeData
 * removeData()} to add/remove rows from the {@link com.smartgwt.client.data.DataSource}, and the <code>ResultTree</code>
 * will reflect the changes automatically.  Alternatively, the {@link com.smartgwt.client.data.DataSource#updateCaches
 * DataSource.updateCaches()} method may be called to only update local caches of the DataSource in question, without
 * generating any server traffic. <P> To create a locally modifiable cache of records from a DataSource, you can use {@link
 * com.smartgwt.client.data.DataSource#fetchData DataSource.fetchData()} to retrieve a List of records which can be
 * modified directly, or you can create a client-only {@link com.smartgwt.client.data.DataSource} from the retrieved data
 * to share a modifiable cache between several DataBoundComponents.
 */
@BeanFactory.FrameworkClass
@BeanFactory.ScClassName("ResultTree")
public class ResultTree extends Tree {

    public static ResultTree getOrCreateRef(JavaScriptObject jsObj) {
        if(jsObj == null) return null;
        BaseClass obj = BaseClass.getRef(jsObj);
        if(obj != null) {
            return (ResultTree) obj;
        } else {
            return new ResultTree(jsObj);
        }
    }
    /** 
     * This method returns a Map of config properties suitable for use as the "defaults" 
     * attribute of a {@link com.smartgwt.client.tools.PaletteNode}.  Use it when you need to
     * work with PaletteNodes indirectly, such when setting up 
     * {@link com.smartgwt.client.widgets.tile.TileRecord}s that will be used in a 
     * {@link com.smartgwt.client.tools.TilePalette}.  See 
     * {@link com.smartgwt.client.docs.DevTools the dev tools overview} for examples of how to
     * assemble and acquire a suitable defaults object when you are creating a PaletteNode 
     * indirectly
     */
    public Map getPaletteDefaults() {
        if (isCreated()) {
            ConfigUtil.warnOfPreConfigInstantiation(this.getClass(), "getPaletteDefaults", (String)null);
        }
        return JSOHelper.convertToMap(JSOHelper.cleanProperties(getConfig(), true));
    }
        


    public ResultTree(){
        scClassName = "ResultTree";
    }

    public ResultTree(JavaScriptObject jsObj){
        scClassName = "ResultTree";
        setJavaScriptObject(jsObj);
    }

    public native JavaScriptObject create()/*-{
        var config = this.@com.smartgwt.client.core.BaseClass::getConfig()();
        var scClassName = this.@com.smartgwt.client.core.BaseClass::scClassName;
        return $wnd.isc[scClassName].create(config);
    }-*/;


    // ********************* Properties / Attributes ***********************

    /**
     * Which nodes should be opened automatically - applied whenever  {@link com.smartgwt.client.widgets.tree.Tree#setRoot
     * setRoot()} is called, including during initialization and as part of  a re-fetch caused, for example, by {@link
     * com.smartgwt.client.widgets.tree.Tree#duplicate duplicate()} or  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#invalidateCache invalidateCache()}. <P> Options are: <ul> <li>"none" - no
     * nodes are opened automatically</li> <li>"root" - opens the {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getRootNode top-level node} - in databound               trees, this node is
     * always hidden</li> <li>"all" - when {@link com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loading data
     * on demand}, opens the             {@link com.smartgwt.client.widgets.tree.ResultTree#getRootNode top-level node} and all
     * of it's direct             descendants - otherwise, opens all loaded nodes </li> </ul>
     *
     * @param autoOpen New autoOpen value. Default value is "none"
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setAutoOpen(String autoOpen) {
        return (ResultTree)setAttribute("autoOpen", autoOpen, true);
    }

    /**
     * Which nodes should be opened automatically - applied whenever  {@link com.smartgwt.client.widgets.tree.Tree#setRoot
     * setRoot()} is called, including during initialization and as part of  a re-fetch caused, for example, by {@link
     * com.smartgwt.client.widgets.tree.Tree#duplicate duplicate()} or  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#invalidateCache invalidateCache()}. <P> Options are: <ul> <li>"none" - no
     * nodes are opened automatically</li> <li>"root" - opens the {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getRootNode top-level node} - in databound               trees, this node is
     * always hidden</li> <li>"all" - when {@link com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loading data
     * on demand}, opens the             {@link com.smartgwt.client.widgets.tree.ResultTree#getRootNode top-level node} and all
     * of it's direct             descendants - otherwise, opens all loaded nodes </li> </ul>
     *
     * @return Current autoOpen value. Default value is "none"
     */
    public String getAutoOpen()  {
        return getAttributeAsString("autoOpen");
    }
    

    /**
     * Controls what happens to the {@link com.smartgwt.client.widgets.tree.ResultTree#getOpenState "open state"} - the set of 
     * nodes opened or closed by the end user after tree data is loaded - when an entirely new tree of nodes is loaded from the
     * server, as a consequence of calling  {@link com.smartgwt.client.widgets.tree.ResultTree#invalidateCache
     * invalidateCache()} or of changing criteria such that the current cache of nodes is dropped.
     *
     * @param autoPreserveOpenState New autoPreserveOpenState value. Default value is "whenUnique"
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setAutoPreserveOpenState(PreserveOpenState autoPreserveOpenState) {
        return (ResultTree)setAttribute("autoPreserveOpenState", autoPreserveOpenState == null ? null : autoPreserveOpenState.getValue(), true);
    }

    /**
     * Controls what happens to the {@link com.smartgwt.client.widgets.tree.ResultTree#getOpenState "open state"} - the set of 
     * nodes opened or closed by the end user after tree data is loaded - when an entirely new tree of nodes is loaded from the
     * server, as a consequence of calling  {@link com.smartgwt.client.widgets.tree.ResultTree#invalidateCache
     * invalidateCache()} or of changing criteria such that the current cache of nodes is dropped.
     *
     * @return Current autoPreserveOpenState value. Default value is "whenUnique"
     */
    public PreserveOpenState getAutoPreserveOpenState()  {
        return EnumUtil.getEnum(PreserveOpenState.values(), getAttribute("autoPreserveOpenState"));
    }
    

    /**
     * For {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link trees}, indicates that we should
     * automatically
     * update the {@link com.smartgwt.client.widgets.tree.Tree#getLinkPositionField position} values of old and new sibling
     * records 
     *  after a drag reparent or reposition-within-parent operation.  For example, say you have a 
     *  tree like this (where the number in parentheses indicates the node's 
     *  {@link com.smartgwt.client.widgets.tree.Tree#getLinkPositionField position} value):<pre>
     *       A
     *         - B (1)
     *         - C (2)
     *         - D (3)
     *       E
     *         - F (1)
     *         - G (2)</pre>
     *  and you drag node C out and drop it between nodes F and G.  This drag operation will spawn
     *  two update operations to the server: a "remove" to delete node C from parent A, and an "add"
     *  to re-add it under parent E.  With <code>autoUpdateSiblingNodesOnDrag</code> in force, we 
     *  also automatically issue two "update" operations to the server - one to change the position 
     *  on node D to 2, and another to change the position on node G to 3.  The end result of this
     *  is that node position values are kept correct.
     *  <p>
     *  Please note the following:<ul>
     *  <li>As noted above, these automatic updates are persistent - we send a queue of actual 
     *  update requests to the server.  This is convenient, but it may not be terribly efficient, 
     *  particularly if you have just dropped a node at the head of a list of several hundred 
     *  siblings.  This is why we do not default this setting to true</li>
     *  <li>The automatic updates work by applying an integer delta value to the existing position
     *  value.  So in the above example, we would compute a delta of negative 1 for node D and 
     *  positive 1 for node G.  The upshot of this is that <code>autoUpdateSiblingNodesOnDrag</code>
     *  only works well if your position values are consecutive integers</li></ul>
     *
     * @param autoUpdateSiblingNodesOnDrag New autoUpdateSiblingNodesOnDrag value. Default value is (see below)
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setAutoUpdateSiblingNodesOnDrag(Boolean autoUpdateSiblingNodesOnDrag)  throws IllegalStateException {
        return (ResultTree)setAttribute("autoUpdateSiblingNodesOnDrag", autoUpdateSiblingNodesOnDrag, false);
    }

    /**
     * For {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link trees}, indicates that we should
     * automatically
     * update the {@link com.smartgwt.client.widgets.tree.Tree#getLinkPositionField position} values of old and new sibling
     * records 
     *  after a drag reparent or reposition-within-parent operation.  For example, say you have a 
     *  tree like this (where the number in parentheses indicates the node's 
     *  {@link com.smartgwt.client.widgets.tree.Tree#getLinkPositionField position} value):<pre>
     *       A
     *         - B (1)
     *         - C (2)
     *         - D (3)
     *       E
     *         - F (1)
     *         - G (2)</pre>
     *  and you drag node C out and drop it between nodes F and G.  This drag operation will spawn
     *  two update operations to the server: a "remove" to delete node C from parent A, and an "add"
     *  to re-add it under parent E.  With <code>autoUpdateSiblingNodesOnDrag</code> in force, we 
     *  also automatically issue two "update" operations to the server - one to change the position 
     *  on node D to 2, and another to change the position on node G to 3.  The end result of this
     *  is that node position values are kept correct.
     *  <p>
     *  Please note the following:<ul>
     *  <li>As noted above, these automatic updates are persistent - we send a queue of actual 
     *  update requests to the server.  This is convenient, but it may not be terribly efficient, 
     *  particularly if you have just dropped a node at the head of a list of several hundred 
     *  siblings.  This is why we do not default this setting to true</li>
     *  <li>The automatic updates work by applying an integer delta value to the existing position
     *  value.  So in the above example, we would compute a delta of negative 1 for node D and 
     *  positive 1 for node G.  The upshot of this is that <code>autoUpdateSiblingNodesOnDrag</code>
     *  only works well if your position values are consecutive integers</li></ul>
     *
     * @return Current autoUpdateSiblingNodesOnDrag value. Default value is (see below)
     */
    public Boolean getAutoUpdateSiblingNodesOnDrag()  {
        return getAttributeAsBoolean("autoUpdateSiblingNodesOnDrag");
    }
    

    /**
     * When using {@link com.smartgwt.client.types.FetchMode fetchMode:"paged"} and providing multiple levels of the tree in
     * one DSResponse, this property specifies the default value assumed for the {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getCanReturnOpenSubfoldersProperty canReturnOpenSubfoldersProperty} when no
     * value for that property is provided for a node.
     *
     * @param canReturnOpenFolders New canReturnOpenFolders value. Default value is false
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setCanReturnOpenFolders(boolean canReturnOpenFolders)  throws IllegalStateException {
        return (ResultTree)setAttribute("canReturnOpenFolders", canReturnOpenFolders, false);
    }

    /**
     * When using {@link com.smartgwt.client.types.FetchMode fetchMode:"paged"} and providing multiple levels of the tree in
     * one DSResponse, this property specifies the default value assumed for the {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getCanReturnOpenSubfoldersProperty canReturnOpenSubfoldersProperty} when no
     * value for that property is provided for a node.
     *
     * @return Current canReturnOpenFolders value. Default value is false
     */
    public boolean getCanReturnOpenFolders()  {
        Boolean result = getAttributeAsBoolean("canReturnOpenFolders");
        return result == null ? false : result;
    }
    

    /**
     * When using {@link com.smartgwt.client.types.FetchMode fetchMode:"paged"} and providing multiple levels of the tree in
     * one DSResponse, <code>canReturnOpenSubfoldersProperty</code> may be set on any folder to indicate whether child folders
     * might be returned by the server already open. If the property is set to false on a folder then subfolders of that folder
     * are never allowed to be returned already open.  This enables the paging mechanism to be more efficient in the amount of
     * data that it requests from the server. <P> For example, setting the <code>canReturnOpenSubfoldersProperty</code> value
     * to <code>false</code> on a node is appropriate if the server-side code determines that the the node's children consist
     * of entirely leaf nodes.
     *
     * @param canReturnOpenSubfoldersProperty New canReturnOpenSubfoldersProperty value. Default value is "canReturnOpenSubfolders"
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     * @see com.smartgwt.client.widgets.tree.ResultTree#setCanReturnOpenFolders
     */
    public ResultTree setCanReturnOpenSubfoldersProperty(String canReturnOpenSubfoldersProperty)  throws IllegalStateException {
        return (ResultTree)setAttribute("canReturnOpenSubfoldersProperty", canReturnOpenSubfoldersProperty, false);
    }

    /**
     * When using {@link com.smartgwt.client.types.FetchMode fetchMode:"paged"} and providing multiple levels of the tree in
     * one DSResponse, <code>canReturnOpenSubfoldersProperty</code> may be set on any folder to indicate whether child folders
     * might be returned by the server already open. If the property is set to false on a folder then subfolders of that folder
     * are never allowed to be returned already open.  This enables the paging mechanism to be more efficient in the amount of
     * data that it requests from the server. <P> For example, setting the <code>canReturnOpenSubfoldersProperty</code> value
     * to <code>false</code> on a node is appropriate if the server-side code determines that the the node's children consist
     * of entirely leaf nodes.
     *
     * @return Current canReturnOpenSubfoldersProperty value. Default value is "canReturnOpenSubfolders"
     * @see com.smartgwt.client.widgets.tree.ResultTree#getCanReturnOpenFolders
     */
    public String getCanReturnOpenSubfoldersProperty()  {
        return getAttributeAsString("canReturnOpenSubfoldersProperty");
    }
    

    /**
     * When using {@link com.smartgwt.client.types.FetchMode fetchMode:"paged"} and providing multiple levels of the tree in
     * one DSResponse, <code>childCountProperty</code> must be set for any folders that include only a partial list of
     * children. For a deeper discussion see the <b>Paging large sets of children</b> section of the {@link
     * com.smartgwt.client.docs.TreeDataBinding} overview.
     *
     * @param childCountProperty New childCountProperty value. Default value is "childCount"
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     * @see <a href="http://www.smartclient.com/smartgwtee/showcase/#tree_multi_level_child_paging" target="examples">Multi-Level Child Paging Example</a>
     */
    public ResultTree setChildCountProperty(String childCountProperty)  throws IllegalStateException {
        return (ResultTree)setAttribute("childCountProperty", childCountProperty, false);
    }

    /**
     * When using {@link com.smartgwt.client.types.FetchMode fetchMode:"paged"} and providing multiple levels of the tree in
     * one DSResponse, <code>childCountProperty</code> must be set for any folders that include only a partial list of
     * children. For a deeper discussion see the <b>Paging large sets of children</b> section of the {@link
     * com.smartgwt.client.docs.TreeDataBinding} overview.
     *
     * @return Current childCountProperty value. Default value is "childCount"
     * @see <a href="http://www.smartclient.com/smartgwtee/showcase/#tree_multi_level_child_paging" target="examples">Multi-Level Child Paging Example</a>
     */
    public String getChildCountProperty()  {
        return getAttributeAsString("childCountProperty");
    }
    

    /**
     * The filter criteria to use when fetching rows.  For usage see {@link
     * com.smartgwt.client.widgets.tree.ResultTree#setCriteria setCriteria()}.
     *
     * <br><br>If this method is called after the component has been drawn/initialized:
     * Set the filter criteria to use when fetching rows. <P> Depending on the result of {@link com.smartgwt.client.widgets.tree.ResultTree#compareCriteria compareCriteria()} and setting for {@link com.smartgwt.client.widgets.tree.ResultTree#getFetchMode fetchMode}, setting criteria may cause a trip to the server to get a new set of nodes, or may simply cause already-fetched nodes to be re-filtered according to the new criteria. <P> For a basic overview on when server fetches are generally performed, see {@link com.smartgwt.client.widgets.tree.ResultTree#getFetchMode fetchMode}. However, this is not the final determination of when server fetches occur. Criteria can be split into local criteria and server criteria by specifying {@link com.smartgwt.client.widgets.tree.ResultTree#getServerFilterFields serverFilterFields}. Thus, even when using fetchMode:"local" a new server fetch will occur if the server criteria changes. For details on how the criteria is split, see {@link com.smartgwt.client.data.DataSource#splitCriteria DataSource.splitCriteria()}. <P> Note: if criteria is being split to retrieve server criteria portion and the criteria is an {@link com.smartgwt.client.data.AdvancedCriteria}, the criteria must consist of a single "and" operator and one or more simple criteria below it. No other logical operators may be used. In other words, the {@link com.smartgwt.client.data.AdvancedCriteria} provided must be exactly representable by a simple criteria.
     *
     * @param criteria the filter criteria. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setCriteria(Criteria criteria) {
        if (criteria instanceof Criterion) {
            criteria.setAttribute("_constructor", "AdvancedCriteria");
        }
        return (ResultTree)setAttribute("criteria", criteria == null ? null : criteria.getJsObj(), true);
    }

    /**
     * The filter criteria to use when fetching rows.  For usage see {@link
     * com.smartgwt.client.widgets.tree.ResultTree#setCriteria setCriteria()}.
     *
     * @return Current criteria value. Default value is null
     */
    public Criteria getCriteria()  {
        return new Criteria(getAttributeAsJavaScriptObject("criteria"));
    }
    

    /**
     * Optional initial data for the tree.  If the {@link com.smartgwt.client.widgets.tree.ResultTree#getFetchMode fetchMode}
     * is <code>"basic"</code> or <code>"local"</code> then the format of this data is exactly the same {@link
     * com.smartgwt.client.widgets.tree.Tree#getParentIdField parentId}-linked list of tree nodes as documented on {@link
     * com.smartgwt.client.widgets.tree.Tree#getData Tree.data} (when the <code>modelType</code> is set to
     * <code>"parent"</code>).  If the <code>fetchMode</code> is <code>"paged"</code> then the format is extended to allow the
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getChildCountProperty childCountProperty} to be set on folder nodes.
     * <P> Providing an initial set of nodes in this way does not affect the behavior of the ResultTree in its loading of
     * unloaded folders.  An equivalent result is achieved if the first fetch from the server returns this same data. <P> If
     * <code>fetchMode</code> is <code>"paged"</code> then you may make folder-by-folder choices as to whether to use paging
     * for the childen of each folder.  If you would like to use paging in a folder then you may include a partial list of that
     * folder's children with the data, provided that you set the <code>childCountProperty</code> to the total number of
     * children.  Otherwise you will need to include either all children of the folder or none of the children.  Open folders
     * without any children provided will cause immediate, new fetches for the children, as usual. <P> Because the initial data
     * is treated exactly as though it were returned from the tree's first server fetch, the order of the initial data must
     * match the initial sort order of the TreeGrid displaying the data or, if no such sort is specified, the native storage
     * order on the server.  For example, consider initial data containing <code>n</code> records having the
     * <code>parentId</code> <code>"X"</code>, meaning they are all in the same folder.  These <code>n</code> records are the
     * records at indices <code>0</code> through <code>(n - 1)</code> that are stored on the server under the parent node.  If
     * the <code>childCountProperty</code> set on the parent node indicates that there are <code>m > n</code> total rows under
     * the parent node then the records at indices <code>n</code> to <code>(m - 1)</code> will be fetched from the server as
     * the user scrolls the additional rows into view.
     * <p><b>Note : </b> This is an advanced setting</p>
     *
     * @param data New data value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     * @see com.smartgwt.client.widgets.tree.Tree#setData
     * @see com.smartgwt.client.widgets.tree.TreeNode
     * @see com.smartgwt.client.docs.TreeDataBinding Tree DataBinding
     */
    public ResultTree setData(TreeNode... data)  throws IllegalStateException {
        return (ResultTree)setAttribute("data", data, false);
    }

    /**
     * Optional initial data for the tree.  If the {@link com.smartgwt.client.widgets.tree.ResultTree#getFetchMode fetchMode}
     * is <code>"basic"</code> or <code>"local"</code> then the format of this data is exactly the same {@link
     * com.smartgwt.client.widgets.tree.Tree#getParentIdField parentId}-linked list of tree nodes as documented on {@link
     * com.smartgwt.client.widgets.tree.Tree#getData Tree.data} (when the <code>modelType</code> is set to
     * <code>"parent"</code>).  If the <code>fetchMode</code> is <code>"paged"</code> then the format is extended to allow the
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getChildCountProperty childCountProperty} to be set on folder nodes.
     * <P> Providing an initial set of nodes in this way does not affect the behavior of the ResultTree in its loading of
     * unloaded folders.  An equivalent result is achieved if the first fetch from the server returns this same data. <P> If
     * <code>fetchMode</code> is <code>"paged"</code> then you may make folder-by-folder choices as to whether to use paging
     * for the childen of each folder.  If you would like to use paging in a folder then you may include a partial list of that
     * folder's children with the data, provided that you set the <code>childCountProperty</code> to the total number of
     * children.  Otherwise you will need to include either all children of the folder or none of the children.  Open folders
     * without any children provided will cause immediate, new fetches for the children, as usual. <P> Because the initial data
     * is treated exactly as though it were returned from the tree's first server fetch, the order of the initial data must
     * match the initial sort order of the TreeGrid displaying the data or, if no such sort is specified, the native storage
     * order on the server.  For example, consider initial data containing <code>n</code> records having the
     * <code>parentId</code> <code>"X"</code>, meaning they are all in the same folder.  These <code>n</code> records are the
     * records at indices <code>0</code> through <code>(n - 1)</code> that are stored on the server under the parent node.  If
     * the <code>childCountProperty</code> set on the parent node indicates that there are <code>m > n</code> total rows under
     * the parent node then the records at indices <code>n</code> to <code>(m - 1)</code> will be fetched from the server as
     * the user scrolls the additional rows into view.
     *
     * @return Current data value. Default value is null
     * @see com.smartgwt.client.widgets.tree.Tree#getData
     * @see com.smartgwt.client.widgets.tree.TreeNode
     * @see com.smartgwt.client.docs.TreeDataBinding Tree DataBinding
     */
    public TreeNode[] getData()  {
        return com.smartgwt.client.util.ConvertTo.arrayOfTreeNode(getAttributeAsJavaScriptObject("data"));
    }
    
    

    /**
     * Controls whether nodes are assumed to be folders or leaves by default. <P> Nodes that have children or have the {@link
     * com.smartgwt.client.widgets.tree.Tree#getIsFolderProperty isFolderProperty} set to true will always be considered
     * folders.  Other nodes will be considered folders or leaves by default according to this setting. <P> If
     * <code>defaultIsFolder</code> is unset, the ResultTree will automatically set it to match the value of {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand}.  This means that, when using
     * folder-by-folder load on demand (<code>loadDataOnDemand:true</code>), by default a newly loaded node will be considered
     * to be a folder that has not loaded its children yet.   <P> When not using folder-by-folder load on demand, by default a
     * newly loaded node is considered a leaf.  If you set <code>defaultIsFolder:true</code> explicitly, by default a newly
     * loaded node is considered to be a folder with no children. <P>  See {@link
     * com.smartgwt.client.widgets.tree.Tree#isFolder Tree.isFolder()} for details on how to explicitly mark nodes as folders
     * or leaves.
     *
     * @param defaultIsFolder New defaultIsFolder value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     * @see com.smartgwt.client.widgets.tree.TreeGrid#setLoadDataOnDemand
     */
    public ResultTree setDefaultIsFolder(Boolean defaultIsFolder)  throws IllegalStateException {
        return (ResultTree)setAttribute("defaultIsFolder", defaultIsFolder, false);
    }

    /**
     * Controls whether nodes are assumed to be folders or leaves by default. <P> Nodes that have children or have the {@link
     * com.smartgwt.client.widgets.tree.Tree#getIsFolderProperty isFolderProperty} set to true will always be considered
     * folders.  Other nodes will be considered folders or leaves by default according to this setting. <P> If
     * <code>defaultIsFolder</code> is unset, the ResultTree will automatically set it to match the value of {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand}.  This means that, when using
     * folder-by-folder load on demand (<code>loadDataOnDemand:true</code>), by default a newly loaded node will be considered
     * to be a folder that has not loaded its children yet.   <P> When not using folder-by-folder load on demand, by default a
     * newly loaded node is considered a leaf.  If you set <code>defaultIsFolder:true</code> explicitly, by default a newly
     * loaded node is considered to be a folder with no children. <P>  See {@link
     * com.smartgwt.client.widgets.tree.Tree#isFolder Tree.isFolder()} for details on how to explicitly mark nodes as folders
     * or leaves.
     *
     * @return Current defaultIsFolder value. Default value is null
     * @see com.smartgwt.client.widgets.tree.TreeGrid#getLoadDataOnDemand
     */
    public Boolean getDefaultIsFolder()  {
        return getAttributeAsBoolean("defaultIsFolder");
    }
    

    /**
     * This attribute governs how to handle cache-synch when a new node is added to this dataSource  with no explicit parentId.
     * <P> If set to <code>true</code>, when a new node is added to this dataSource via {@link
     * com.smartgwt.client.data.DataSource#addData DataSource.addData()}, with no explicit parentId, the node will be added as
     * a  child of the root node of this result tree. Otherwise it will be ignored. <P> Similar logic applies to {@link
     * com.smartgwt.client.data.DataSource#updateData updated nodes} - if this property is true and the parentId of an updated
     * node is cleared, it will be moved to become a child of root, otherwise it will be dropped from the tree.
     * <p><b>Note : </b> This is an advanced setting</p>
     *
     * @param defaultNewNodesToRoot New defaultNewNodesToRoot value. Default value is false
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setDefaultNewNodesToRoot(Boolean defaultNewNodesToRoot) {
        return (ResultTree)setAttribute("defaultNewNodesToRoot", defaultNewNodesToRoot, true);
    }

    /**
     * This attribute governs how to handle cache-synch when a new node is added to this dataSource  with no explicit parentId.
     * <P> If set to <code>true</code>, when a new node is added to this dataSource via {@link
     * com.smartgwt.client.data.DataSource#addData DataSource.addData()}, with no explicit parentId, the node will be added as
     * a  child of the root node of this result tree. Otherwise it will be ignored. <P> Similar logic applies to {@link
     * com.smartgwt.client.data.DataSource#updateData updated nodes} - if this property is true and the parentId of an updated
     * node is cleared, it will be moved to become a child of root, otherwise it will be dropped from the tree.
     *
     * @return Current defaultNewNodesToRoot value. Default value is false
     */
    public Boolean getDefaultNewNodesToRoot()  {
        Boolean result = getAttributeAsBoolean("defaultNewNodesToRoot");
        return result == null ? false : result;
    }
    

    /**
     * By default when the data of this ResultTree's dataSource is modified, the ResultTree will be updated to display these
     * changes. Set this flag to true to disable this behavior.
     * <p><b>Note : </b> This is an advanced setting</p>
     *
     * @param disableCacheSync New disableCacheSync value. Default value is false
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setDisableCacheSync(Boolean disableCacheSync)  throws IllegalStateException {
        return (ResultTree)setAttribute("disableCacheSync", disableCacheSync, false);
    }

    /**
     * By default when the data of this ResultTree's dataSource is modified, the ResultTree will be updated to display these
     * changes. Set this flag to true to disable this behavior.
     *
     * @return Current disableCacheSync value. Default value is false
     */
    public Boolean getDisableCacheSync()  {
        Boolean result = getAttributeAsBoolean("disableCacheSync");
        return result == null ? false : result;
    }
    

    /**
     * When data is loaded from the server, should nodes with an explicit value for the {@link
     * com.smartgwt.client.widgets.tree.Tree#getParentIdField Tree.parentIdField} which doesn't map to a valid parent node be
     * dropped? If set to false, for {@link com.smartgwt.client.widgets.tree.TreeGrid#getLoadDataOnDemand
     * TreeGrid.loadDataOnDemand}:false trees, parentless nodes will be added as children of the root node - for {@link
     * com.smartgwt.client.widgets.tree.TreeGrid#getLoadDataOnDemand TreeGrid.loadDataOnDemand}:true, they will be added as
     * children of the folder currently requesting children. <P> This effectively allows nodes to be loaded into the current
     * (or root) folder without needing an explicit {@link com.smartgwt.client.widgets.tree.Tree#getParentIdField parentIdField
     * value} that matches the folder's ID or <code>rootValue</code> for the resultTree. <P> Note: For
     * <code>loadDataOnDemand:false</code> trees, if this property is unset at init time, it will default to <code>true</code>
     * if an explicit {@link com.smartgwt.client.widgets.tree.ResultTree#getRootNode rootNode} has been specified. This ensures
     * that if the data tree retrieved from the server includes ancestors of the desired root-node we don't display them.
     * Otherwise this property always defaults to false.
     * <p><b>Note : </b> This is an advanced setting</p>
     *
     * @param discardParentlessNodes New discardParentlessNodes value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setDiscardParentlessNodes(Boolean discardParentlessNodes)  throws IllegalStateException {
        return (ResultTree)setAttribute("discardParentlessNodes", discardParentlessNodes, false);
    }

    /**
     * When data is loaded from the server, should nodes with an explicit value for the {@link
     * com.smartgwt.client.widgets.tree.Tree#getParentIdField Tree.parentIdField} which doesn't map to a valid parent node be
     * dropped? If set to false, for {@link com.smartgwt.client.widgets.tree.TreeGrid#getLoadDataOnDemand
     * TreeGrid.loadDataOnDemand}:false trees, parentless nodes will be added as children of the root node - for {@link
     * com.smartgwt.client.widgets.tree.TreeGrid#getLoadDataOnDemand TreeGrid.loadDataOnDemand}:true, they will be added as
     * children of the folder currently requesting children. <P> This effectively allows nodes to be loaded into the current
     * (or root) folder without needing an explicit {@link com.smartgwt.client.widgets.tree.Tree#getParentIdField parentIdField
     * value} that matches the folder's ID or <code>rootValue</code> for the resultTree. <P> Note: For
     * <code>loadDataOnDemand:false</code> trees, if this property is unset at init time, it will default to <code>true</code>
     * if an explicit {@link com.smartgwt.client.widgets.tree.ResultTree#getRootNode rootNode} has been specified. This ensures
     * that if the data tree retrieved from the server includes ancestors of the desired root-node we don't display them.
     * Otherwise this property always defaults to false.
     *
     * @return Current discardParentlessNodes value. Default value is null
     */
    public Boolean getDiscardParentlessNodes()  {
        return getAttributeAsBoolean("discardParentlessNodes");
    }
    

    /**
     * Mode of fetching records from server. <P> fetchMode:"local" implies that local filtering will always be performed. See
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter keepParentsOnFilter} for additional filtering
     * details. <P> fetchMode:"basic" or "paged" implies that if search criteria change, the entire tree will be discarded and
     * re-fetched from the server.  When retrieving the replacement tree data, the default behavior will be to preserve the
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getOpenState openState} for any nodes that the server returns which
     * were previously opened by the user.  Note that this implies that if {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand} is enabled and the server returns only
     * root-level nodes, open state will be preserved only for root-level nodes, and children of open root-level nodes will be
     * immediately fetched from the server if they are not included in the server's initial response. <P> fetchMode:"paged"
     * enables paging for nodes that have very large numbers of children. Whenever the children of a folder are loaded, the
     * <code>resultTree</code> will set {@link com.smartgwt.client.data.DSRequest#getStartRow DSRequest.startRow} and {@link
     * com.smartgwt.client.data.DSRequest#getEndRow endRow} when requesting children from the DataSource, and will manage
     * loading of further children on demand, similar to how a {@link com.smartgwt.client.data.ResultSet} manages paging for
     * lists.  For a deeper discussion see the <b>Paging large sets of children</b> section of the {@link
     * com.smartgwt.client.docs.TreeDataBinding} overview.
     *
     * @param fetchMode New fetchMode value. Default value is "basic"
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     * @see com.smartgwt.client.widgets.tree.ResultTree#setLoadDataOnDemand
     * @see com.smartgwt.client.widgets.tree.ResultTree#setUseSimpleCriteriaLOD
     * @see com.smartgwt.client.docs.TreeDataBinding Tree DataBinding
     * @see <a href="http://www.smartclient.com/smartgwtee/showcase/#tree_paging_for_children" target="examples">Paging for Children Example</a>
     */
    public ResultTree setFetchMode(FetchMode fetchMode)  throws IllegalStateException {
        return (ResultTree)setAttribute("fetchMode", fetchMode == null ? null : fetchMode.getValue(), false);
    }

    /**
     * Mode of fetching records from server. <P> fetchMode:"local" implies that local filtering will always be performed. See
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter keepParentsOnFilter} for additional filtering
     * details. <P> fetchMode:"basic" or "paged" implies that if search criteria change, the entire tree will be discarded and
     * re-fetched from the server.  When retrieving the replacement tree data, the default behavior will be to preserve the
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getOpenState openState} for any nodes that the server returns which
     * were previously opened by the user.  Note that this implies that if {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand} is enabled and the server returns only
     * root-level nodes, open state will be preserved only for root-level nodes, and children of open root-level nodes will be
     * immediately fetched from the server if they are not included in the server's initial response. <P> fetchMode:"paged"
     * enables paging for nodes that have very large numbers of children. Whenever the children of a folder are loaded, the
     * <code>resultTree</code> will set {@link com.smartgwt.client.data.DSRequest#getStartRow DSRequest.startRow} and {@link
     * com.smartgwt.client.data.DSRequest#getEndRow endRow} when requesting children from the DataSource, and will manage
     * loading of further children on demand, similar to how a {@link com.smartgwt.client.data.ResultSet} manages paging for
     * lists.  For a deeper discussion see the <b>Paging large sets of children</b> section of the {@link
     * com.smartgwt.client.docs.TreeDataBinding} overview.
     *
     * @return Current fetchMode value. Default value is "basic"
     * @see com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand
     * @see com.smartgwt.client.widgets.tree.ResultTree#getUseSimpleCriteriaLOD
     * @see com.smartgwt.client.docs.TreeDataBinding Tree DataBinding
     * @see <a href="http://www.smartclient.com/smartgwtee/showcase/#tree_paging_for_children" target="examples">Paging for Children Example</a>
     */
    public FetchMode getFetchMode()  {
        return EnumUtil.getEnum(FetchMode.values(), getAttribute("fetchMode"));
    }
    

    /**
     * If {@link com.smartgwt.client.widgets.tree.ResultTree#getAutoUpdateSiblingNodesOnDrag autoUpdateSiblingNodesOnDrag} is
     * in force, this is the value we will  use to auto-update the position of a node when we cannot derive that value from the
     * existing value of a neighbor.  This happens when a node is dropped into the very first  position below a parent
     * (including the special case of the parent being previously empty)
     *
     * @param firstPositionValue New firstPositionValue value. Default value is 1
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setFirstPositionValue(Integer firstPositionValue) {
        return (ResultTree)setAttribute("firstPositionValue", firstPositionValue, true);
    }

    /**
     * If {@link com.smartgwt.client.widgets.tree.ResultTree#getAutoUpdateSiblingNodesOnDrag autoUpdateSiblingNodesOnDrag} is
     * in force, this is the value we will  use to auto-update the position of a node when we cannot derive that value from the
     * existing value of a neighbor.  This happens when a node is dropped into the very first  position below a parent
     * (including the special case of the parent being previously empty)
     *
     * @return Current firstPositionValue value. Default value is 1
     */
    public Integer getFirstPositionValue()  {
        return getAttributeAsInt("firstPositionValue");
    }
    

    /**
     * Criteria that are never shown to or edited by the user and are cumulative with any  criteria provided via {@link
     * com.smartgwt.client.widgets.DataBoundComponent#getInitialCriteria DataBoundComponent.initialCriteria}, {@link
     * com.smartgwt.client.widgets.tree.ResultTree#setCriteria setCriteria()} etc.
     *
     * @param implicitCriteria New implicitCriteria value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setImplicitCriteria(Criteria implicitCriteria) {
        if (implicitCriteria instanceof Criterion) {
            implicitCriteria.setAttribute("_constructor", "AdvancedCriteria");
        }
        return (ResultTree)setAttribute("implicitCriteria", implicitCriteria == null ? null : implicitCriteria.getJsObj(), true);
    }

    /**
     * Criteria that are never shown to or edited by the user and are cumulative with any  criteria provided via {@link
     * com.smartgwt.client.widgets.DataBoundComponent#getInitialCriteria DataBoundComponent.initialCriteria}, {@link
     * com.smartgwt.client.widgets.tree.ResultTree#setCriteria setCriteria()} etc.
     *
     * @return Current implicitCriteria value. Default value is null
     */
    public Criteria getImplicitCriteria()  {
        return new Criteria(getAttributeAsJavaScriptObject("implicitCriteria"));
    }
    

    /**
     * If set, tree-based filtering is performed such that parent nodes are kept as long as they have children that match the
     * filter criteria, even if the parents themselves do not match the filter criteria. If not set, filtering will exclude
     * parent nodes not matching the criteria, and all nodes below them in the tree. <p>  If some criteria <i>must</i> be sent
     * to the server in order to produce a valid tree of data, but <code>keepParentsOnFilter</code> is also required, the 
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getServerFilterFields serverFilterFields} attribute may be used to
     * specify a list of field names that will be sent to the server whenever they are present in the  criteria. Note that for
     * the subset of criteria applied to these fields, <code>keepParentsInFilter</code> behavior will not occur without custom 
     * logic in the DataSource fetch operation. <P> If {@link com.smartgwt.client.types.FetchMode} is explicitly set to
     * <code>"paged"</code>, it is not possible  to implement <code>keepParentsOnFilter</code>, either  by local filtering or
     * with the  automatic client-driven handling mentioned below. Support for <code>keepParentsOnFilter</code> for a paged
     * ResultTree therefore also requires custom logic in the DataSource fetch operation. To support this a developer must
     * ensure that their fetch operation returns the appropriate set of nodes - all nodes that match the specified criteria
     * plus their ancestor nodes even if they do not match the specified criteria. <h3>keepParentsOnFilter with load-on-demand
     * trees</h3> The combination of <code>keepParentsOnFilter</code> and  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand} presents additional difficulties  that
     * require special handling.  The problem is that in order to determine even the  top-level folders, you have to examine
     * every node in the entire tree.  For example, say there is one top-level folder that has thousands of folders and nodes
     * underneath it,  and there is just one leaf node, 6 levels deep, that matches the filter criteria.  You  have to find out
     * about that node, because it implies the top-level folder must be  retained. <p> So the server basically has to examine
     * every node in the dataset to determine even what shows up at the top level of the tree.  If it does not do this, parent
     * nodes that don't match the filter criteria will be excluded from the tree, with the upshot that the  child nodes that
     * <i>do</i> match the criteria will be inaccessible because nodes in  load-on-demand trees are only loaded when their
     * parent node is opened   <p> By default, Smart GWT solves this with a client-driven implementation of this special
     * handling.  This algorithm involves finding the nodes that match the filter criteria -  which we term <b>matching
     * leaves</b> - and then recursively travelling back up the tree, determining the ancestors of the matching leaves - the
     * so-called <b>dangling parents</b>. When we have traversed all the way back to the root node from every matching leaf, we
     * have recorded every dangling parent and have what we term the <b>skeleton</b> of the  tree.  The skeleton is then added
     * to fetch criteria whenever a load-on-demand fetch  request is made, ensuring that we fetch both dangling parents and
     * matching leaves. <p> There are three ways this recursive traversal can be implemented:<ul> <li>For dataSources that
     * {@link com.smartgwt.client.data.DataSource#supportsDynamicTreeJoins support dynamic tree joins}, we use the {@link
     * com.smartgwt.client.data.DSRequest#getAdditionalOutputs additionalOutputs} feature to declare self-joins that fetch
     * multiple levels of parent in one query (the number of levels is configurable, see {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getMatchingLeafJoinDepth matchingLeafJoinDepth}).  Of Smart GWT's built-in
     * DataSource  types, only SQLDataSource is currently capable of this approach</li> <li>For server-side dataSources that do
     * not support self-joins, we combine individual single-level fetches into a {@link
     * com.smartgwt.client.rpc.RPCManager#sendQueue queue}, using  {@link
     * com.smartgwt.client.data.DSRequest#getFieldValueExpressions fieldValueExpressions} with  {@link
     * com.smartgwt.client.docs.serverds.DSRequestModifier#value responseData "allRecords"} so that each fetch in the  queue
     * uses the output of the previous fetch as its criteria (so the first fetch returns  the parents of the matching nodes,
     * the second fetch returns the parents of those nodes,  and so on).  Again, the number of fetches per queue can be
     * configured with the  <code>matchingLeafJoinDepth</code> property.  This approach works for any server-side  DataSource
     * implementation, including your own custom implementations</li> <li>For {@link
     * com.smartgwt.client.data.DataSource#getClientOnly client-side} dataSources, which support neither  self-joins not
     * queueing, the algorithm simply makes as many single-level requests as  necessary to build the entire skeleton.  Note,
     * this is exactly what would happen with previously-mentioned queueing approach, if you set
     * <code>matchingLeafJoinDepth</code> to 1</li> </ul> If you want to disable the automatic handling of
     * <code>keepParentsOnFilter</code> on load-on-demand trees, see {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getServerKeepParentsOnFilter serverKeepParentsOnFilter}
     *
     * @param keepParentsOnFilter New keepParentsOnFilter value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     * @see com.smartgwt.client.widgets.tree.ResultTree#setKeepParentsOnFilterMaxNodes
     * @see com.smartgwt.client.docs.TreeDataBinding Tree DataBinding
     */
    public ResultTree setKeepParentsOnFilter(Boolean keepParentsOnFilter)  throws IllegalStateException {
        return (ResultTree)setAttribute("keepParentsOnFilter", keepParentsOnFilter, false);
    }

    /**
     * If set, tree-based filtering is performed such that parent nodes are kept as long as they have children that match the
     * filter criteria, even if the parents themselves do not match the filter criteria. If not set, filtering will exclude
     * parent nodes not matching the criteria, and all nodes below them in the tree. <p>  If some criteria <i>must</i> be sent
     * to the server in order to produce a valid tree of data, but <code>keepParentsOnFilter</code> is also required, the 
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getServerFilterFields serverFilterFields} attribute may be used to
     * specify a list of field names that will be sent to the server whenever they are present in the  criteria. Note that for
     * the subset of criteria applied to these fields, <code>keepParentsInFilter</code> behavior will not occur without custom 
     * logic in the DataSource fetch operation. <P> If {@link com.smartgwt.client.types.FetchMode} is explicitly set to
     * <code>"paged"</code>, it is not possible  to implement <code>keepParentsOnFilter</code>, either  by local filtering or
     * with the  automatic client-driven handling mentioned below. Support for <code>keepParentsOnFilter</code> for a paged
     * ResultTree therefore also requires custom logic in the DataSource fetch operation. To support this a developer must
     * ensure that their fetch operation returns the appropriate set of nodes - all nodes that match the specified criteria
     * plus their ancestor nodes even if they do not match the specified criteria. <h3>keepParentsOnFilter with load-on-demand
     * trees</h3> The combination of <code>keepParentsOnFilter</code> and  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand} presents additional difficulties  that
     * require special handling.  The problem is that in order to determine even the  top-level folders, you have to examine
     * every node in the entire tree.  For example, say there is one top-level folder that has thousands of folders and nodes
     * underneath it,  and there is just one leaf node, 6 levels deep, that matches the filter criteria.  You  have to find out
     * about that node, because it implies the top-level folder must be  retained. <p> So the server basically has to examine
     * every node in the dataset to determine even what shows up at the top level of the tree.  If it does not do this, parent
     * nodes that don't match the filter criteria will be excluded from the tree, with the upshot that the  child nodes that
     * <i>do</i> match the criteria will be inaccessible because nodes in  load-on-demand trees are only loaded when their
     * parent node is opened   <p> By default, Smart GWT solves this with a client-driven implementation of this special
     * handling.  This algorithm involves finding the nodes that match the filter criteria -  which we term <b>matching
     * leaves</b> - and then recursively travelling back up the tree, determining the ancestors of the matching leaves - the
     * so-called <b>dangling parents</b>. When we have traversed all the way back to the root node from every matching leaf, we
     * have recorded every dangling parent and have what we term the <b>skeleton</b> of the  tree.  The skeleton is then added
     * to fetch criteria whenever a load-on-demand fetch  request is made, ensuring that we fetch both dangling parents and
     * matching leaves. <p> There are three ways this recursive traversal can be implemented:<ul> <li>For dataSources that
     * {@link com.smartgwt.client.data.DataSource#supportsDynamicTreeJoins support dynamic tree joins}, we use the {@link
     * com.smartgwt.client.data.DSRequest#getAdditionalOutputs additionalOutputs} feature to declare self-joins that fetch
     * multiple levels of parent in one query (the number of levels is configurable, see {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getMatchingLeafJoinDepth matchingLeafJoinDepth}).  Of Smart GWT's built-in
     * DataSource  types, only SQLDataSource is currently capable of this approach</li> <li>For server-side dataSources that do
     * not support self-joins, we combine individual single-level fetches into a {@link
     * com.smartgwt.client.rpc.RPCManager#sendQueue queue}, using  {@link
     * com.smartgwt.client.data.DSRequest#getFieldValueExpressions fieldValueExpressions} with  {@link
     * com.smartgwt.client.docs.serverds.DSRequestModifier#value responseData "allRecords"} so that each fetch in the  queue
     * uses the output of the previous fetch as its criteria (so the first fetch returns  the parents of the matching nodes,
     * the second fetch returns the parents of those nodes,  and so on).  Again, the number of fetches per queue can be
     * configured with the  <code>matchingLeafJoinDepth</code> property.  This approach works for any server-side  DataSource
     * implementation, including your own custom implementations</li> <li>For {@link
     * com.smartgwt.client.data.DataSource#getClientOnly client-side} dataSources, which support neither  self-joins not
     * queueing, the algorithm simply makes as many single-level requests as  necessary to build the entire skeleton.  Note,
     * this is exactly what would happen with previously-mentioned queueing approach, if you set
     * <code>matchingLeafJoinDepth</code> to 1</li> </ul> If you want to disable the automatic handling of
     * <code>keepParentsOnFilter</code> on load-on-demand trees, see {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getServerKeepParentsOnFilter serverKeepParentsOnFilter}
     *
     * @return Current keepParentsOnFilter value. Default value is null
     * @see com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilterMaxNodes
     * @see com.smartgwt.client.docs.TreeDataBinding Tree DataBinding
     */
    public Boolean getKeepParentsOnFilter()  {
        return getAttributeAsBoolean("keepParentsOnFilter");
    }
    

    /**
     * When a tree specifies the combination of  {@link com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter
     * keepParentsOnFilter} and {@link com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand}, Smart
     * GWT by default  automatically fetches the "skeleton" of the filtered tree - see the  <code>keepParentsOnFilter</code>
     * overview for details, including the definition of  "skeleton" and other relevant terminology <p> A problem can arise
     * with this approach if the user enters overly inclusive filter  criteria.  For example, say you have a 200,000 row
     * dataset and the user chooses to  apply a filter of "a".  Chances are that is going to include the majority of the nodes
     * in the tree, which would be OK because this is a load-on-demand tree.  However, because we will build, cache and then
     * pass around the list of id's of the dangling parents,  this may become a performance issue.  A lot depends on the nature
     * of your data - this will be much less of an issue for shallow trees with lots of leaf nodes relative to  parents,
     * compared to deep trees with a lot of dangling parents to record. <p> If the user tries to filter the TreeGrid such that
     * there are more matching nodes than  is allowed by this setting, the system will truncate the fetch and show the warning 
     * message defined in {@link com.smartgwt.client.rpc.RPCManager#keepParentsOnFilterMaxNodesExceededMessage
     * keepParentsOnFilterMaxNodesExceededMessage}.  Since the cached node-list is derived from bottom to top, this truncation
     * of the fetch process will usually mean we have not yet derived any top-level nodes.  This in turn  means that the tree
     * will appear to be empty. <p> Setting this property to a suitable value for your specific use case is an application
     * tuning exercise, finding the right balance between usability and performance.  To  remove the node limit altogether, set
     * this property to -1.  However, if you have a  load-on-demand tree over a large dataset, we do not recommend that you
     * remove the limit completely, as it can lead to serious problems on both the client and server, as the application tries
     * to cope with criteria that contains huge numbers of id's.
     *
     * @param keepParentsOnFilterMaxNodes New keepParentsOnFilterMaxNodes value. Default value is 8000
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setKeepParentsOnFilterMaxNodes(Integer keepParentsOnFilterMaxNodes) {
        return (ResultTree)setAttribute("keepParentsOnFilterMaxNodes", keepParentsOnFilterMaxNodes, true);
    }

    /**
     * When a tree specifies the combination of  {@link com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter
     * keepParentsOnFilter} and {@link com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand}, Smart
     * GWT by default  automatically fetches the "skeleton" of the filtered tree - see the  <code>keepParentsOnFilter</code>
     * overview for details, including the definition of  "skeleton" and other relevant terminology <p> A problem can arise
     * with this approach if the user enters overly inclusive filter  criteria.  For example, say you have a 200,000 row
     * dataset and the user chooses to  apply a filter of "a".  Chances are that is going to include the majority of the nodes
     * in the tree, which would be OK because this is a load-on-demand tree.  However, because we will build, cache and then
     * pass around the list of id's of the dangling parents,  this may become a performance issue.  A lot depends on the nature
     * of your data - this will be much less of an issue for shallow trees with lots of leaf nodes relative to  parents,
     * compared to deep trees with a lot of dangling parents to record. <p> If the user tries to filter the TreeGrid such that
     * there are more matching nodes than  is allowed by this setting, the system will truncate the fetch and show the warning 
     * message defined in {@link com.smartgwt.client.rpc.RPCManager#keepParentsOnFilterMaxNodesExceededMessage
     * keepParentsOnFilterMaxNodesExceededMessage}.  Since the cached node-list is derived from bottom to top, this truncation
     * of the fetch process will usually mean we have not yet derived any top-level nodes.  This in turn  means that the tree
     * will appear to be empty. <p> Setting this property to a suitable value for your specific use case is an application
     * tuning exercise, finding the right balance between usability and performance.  To  remove the node limit altogether, set
     * this property to -1.  However, if you have a  load-on-demand tree over a large dataset, we do not recommend that you
     * remove the limit completely, as it can lead to serious problems on both the client and server, as the application tries
     * to cope with criteria that contains huge numbers of id's.
     *
     * @return Current keepParentsOnFilterMaxNodes value. Default value is 8000
     */
    public Integer getKeepParentsOnFilterMaxNodes()  {
        return getAttributeAsInt("keepParentsOnFilterMaxNodes");
    }
    

    /**
     * The {@link com.smartgwt.client.data.DSRequest#getOperationId operationId} this <code>ResultTree</code> should use  when
     * performing add operations on its {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource linkDataSource}. 
     * Has no effect if this is not a {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link tree}. <p> Note,
     * this property wll be used by internal update operations when you drag-move or  drag-reparent nodes in a multi-link tree.
     * Do not use it when adding records from  application code by directly calling <code>addData()</code> on the  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource linkDataSource}; instead just use the regular 
     * <code>operationId</code> property in your add request.  Also note, because this  property is intended to allow your code
     * to influence the operationId used by internal  methods, and those methods never directly update link data (moved and
     * re-parented links  are always removed and then re-added), there is no corresponding 
     * <code>linkDataUpdateOperation</code> property.
     *
     * @param linkDataAddOperation New linkDataAddOperation value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setLinkDataAddOperation(String linkDataAddOperation) {
        return (ResultTree)setAttribute("linkDataAddOperation", linkDataAddOperation, true);
    }

    /**
     * The {@link com.smartgwt.client.data.DSRequest#getOperationId operationId} this <code>ResultTree</code> should use  when
     * performing add operations on its {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource linkDataSource}. 
     * Has no effect if this is not a {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link tree}. <p> Note,
     * this property wll be used by internal update operations when you drag-move or  drag-reparent nodes in a multi-link tree.
     * Do not use it when adding records from  application code by directly calling <code>addData()</code> on the  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource linkDataSource}; instead just use the regular 
     * <code>operationId</code> property in your add request.  Also note, because this  property is intended to allow your code
     * to influence the operationId used by internal  methods, and those methods never directly update link data (moved and
     * re-parented links  are always removed and then re-added), there is no corresponding 
     * <code>linkDataUpdateOperation</code> property.
     *
     * @return Current linkDataAddOperation value. Default value is null
     */
    public String getLinkDataAddOperation()  {
        return getAttributeAsString("linkDataAddOperation");
    }
    

    /**
     * The fetch mode for this tree's link data; ignored if this is not a  {@link
     * com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link tree}
     *
     * @param linkDataFetchMode New linkDataFetchMode value. Default value is "separate"
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setLinkDataFetchMode(LinkDataFetchMode linkDataFetchMode)  throws IllegalStateException {
        return (ResultTree)setAttribute("linkDataFetchMode", linkDataFetchMode == null ? null : linkDataFetchMode.getValue(), false);
    }

    /**
     * The fetch mode for this tree's link data; ignored if this is not a  {@link
     * com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link tree}
     *
     * @return Current linkDataFetchMode value. Default value is "separate"
     */
    public LinkDataFetchMode getLinkDataFetchMode()  {
        return EnumUtil.getEnum(LinkDataFetchMode.values(), getAttribute("linkDataFetchMode"));
    }
    

    /**
     * The {@link com.smartgwt.client.data.DSRequest#getOperationId operationId} this <code>ResultTree</code> should use  when
     * performing fetch operations on its {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource linkDataSource}.
     * Has no effect if this is not a {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link tree} <p> Note,
     * this value can be overridden by {@link com.smartgwt.client.data.DSRequest#getLinkDataFetchOperation
     * DSRequest.linkDataFetchOperation} when  calling <code>fetchData()</code> on the component (e.g. {@link
     * com.smartgwt.client.widgets.tree.TreeGrid#fetchData TreeGrid.fetchData}) directly from application code.
     *
     * @param linkDataFetchOperation New linkDataFetchOperation value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setLinkDataFetchOperation(String linkDataFetchOperation) {
        return (ResultTree)setAttribute("linkDataFetchOperation", linkDataFetchOperation, true);
    }

    /**
     * The {@link com.smartgwt.client.data.DSRequest#getOperationId operationId} this <code>ResultTree</code> should use  when
     * performing fetch operations on its {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource linkDataSource}.
     * Has no effect if this is not a {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link tree} <p> Note,
     * this value can be overridden by {@link com.smartgwt.client.data.DSRequest#getLinkDataFetchOperation
     * DSRequest.linkDataFetchOperation} when  calling <code>fetchData()</code> on the component (e.g. {@link
     * com.smartgwt.client.widgets.tree.TreeGrid#fetchData TreeGrid.fetchData}) directly from application code.
     *
     * @return Current linkDataFetchOperation value. Default value is null
     */
    public String getLinkDataFetchOperation()  {
        return getAttributeAsString("linkDataFetchOperation");
    }
    

    /**
     * The {@link com.smartgwt.client.data.DSRequest#getOperationId operationId} this <code>ResultTree</code> should use  when
     * performing remove operations on its {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource
     * linkDataSource}.  Has no effect if this is not a {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link
     * tree}. <p> See {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataAddOperation linkDataAddOperation} for more
     * information on how this property is  intended to be used.
     *
     * @param linkDataRemoveOperation New linkDataRemoveOperation value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setLinkDataRemoveOperation(String linkDataRemoveOperation) {
        return (ResultTree)setAttribute("linkDataRemoveOperation", linkDataRemoveOperation, true);
    }

    /**
     * The {@link com.smartgwt.client.data.DSRequest#getOperationId operationId} this <code>ResultTree</code> should use  when
     * performing remove operations on its {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource
     * linkDataSource}.  Has no effect if this is not a {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link
     * tree}. <p> See {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataAddOperation linkDataAddOperation} for more
     * information on how this property is  intended to be used.
     *
     * @return Current linkDataRemoveOperation value. Default value is null
     */
    public String getLinkDataRemoveOperation()  {
        return getAttributeAsString("linkDataRemoveOperation");
    }
    

    /**
     * This property allows you to specify the dataSource to be used for fetching link information
     *  in a databound <i>multilink</i> tree.  A multilink tree is one where the same node is 
     *  allowed to appear in multiple places in the tree, and it is achieved by providing the node 
     *  data and the link data separately.  Nodes are provided via the normal 
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getDataSource dataSource}; <code>linkDataSource</code> is only used
     * for 
     *  fetching and updating link information.  
     *  <p>
     *  The <code>linkDataSource</code> is an ordinary {@link com.smartgwt.client.data.DataSource} that you implement
     *  just like any other.  However, for correct operation as a <code>linkDataSource</code>, it 
     *  must have the following:<ul>
     *  <li>A {@link com.smartgwt.client.data.DataSourceField#getPrimaryKey primaryKey field}.  Like any dataSource, a 
     *  <code>linkDataSource</code> is not fully functional without a <code>primaryKey</code> field</li>
     * <li>A field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getParentIdField Tree.parentIdField}</li>
     *  <li>A field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getIdField Tree.idField}</li>
     * <li>Optionally, a field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getLinkPositionField
     * Tree.linkPositionField}</li>
     *  <li>Fields for other values you may wish to store with the link, if any</li>
     *  </ul>
     *  <h3>Providing node data and link data</h3>
     *  Consider a structure for the components of a bicycle, greatly simplified:<pre>
     *          Frame
     *         /    \
     *      Wheel   Wheel
     *     /  \     /  \
     *   Hub Tire  Hub Tire
     *  </pre>
     *  Here, the two wheels are the same assembly, so really it should look like this:<pre>
     *        Frame
     *         | |               
     *        Wheel
     *        /   \     
     *      Hub  Tire 
     *  </pre>
     *  Normal Smart GWT trees cannot model this arrangement accurately because this is not 
     *  really a tree, it is a graph; trees do not contain multiple paths to a given node.  The 
     *  only way to handle this arrangement of nodes in a formal tree would be to make two copies
     *  of the "Wheel" node, at which point they are no longer the same thing. Either way, in a 
     *  {@link com.smartgwt.client.widgets.tree.TreeGrid}, we would have to visualise it like this:<pre> 
     *    Frame
     *       Wheel
     *          Hub
     *          Tire
     *       Wheel
     *          Hub
     *          Tire
     *  </pre>
     *  But if we use copies so that the the two wheels are no longer the same thing, changing 
     *  one of them will no longer change the other, which is a fundamental problem because in 
     *  this scenario, the two wheels really are the same thing.  Now, changing the name of the 
     *  "Hub" in one "Wheel" would not change it in the other; adding a "Spokes" node to the 
     *  second item would not also add it to the first.  Drag-reordering child nodes in one 
     *  "Wheel" would not re-order them in the other.  All of these things are incorrect, because
     *  the two wheels are the same thing.
     *  <p>
     *  Multilink trees provide a way to handle this arrangement without physical copying of the
     *  duplicate nodes, preserving the sameness of them and thus fixing all the problems
     *  described above.
     *  <p>
     *  The node data for the above tree, simplified, would be a flat list something like this:<pre>
     *    [
     *       { id: 1, description: "Frame" },
     *       { id: 2, description: "Wheel" },
     *       { id: 3, description: "Hub" },
     *       { id: 4, description: "Tire" }
     *    ]
     *  </pre>
     *  The link data would look like this:<pre>
     *    [
     *       { linkId: 1, parentId: 1, id: 2, position: 1 },
     *       { linkId: 2, parentId: 2, id: 3, position: 1 },
     *       { linkId: 3, parentId: 2, id: 4, position: 2 },
     *       { linkId: 4, parentId: 1, id: 2, position: 2 }
     *    ]
     *  </pre>
     * Or, if you were using {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataFetchMode linkDataFetchMode}
     * "single", you would combine 
     *  the node and link data into a single dataset like this:<pre>
     *    [
     *       { id: 1, position: 0, description: "Frame" },
     *       { parentId: 1, id: 2, position: 1, description: "Wheel", linkId: 1 },
     *       { parentId: 2, id: 3, position: 1, description: "Hub", linkId: 2 },
     *       { parentId: 2, id: 4, position: 2, description: "Tire", linkId: 3 },
     *       { parentId: 1, id: 2, position: 2, description: "Wheel", linkId: 4 }
     *    ]</pre>
     * 
     *  <p>
     * <b>NOTE:</b> It is also possible to create an unbound multilink tree - see {@link
     * com.smartgwt.client.widgets.tree.Tree#getLinkData Tree.linkData}.
     *
     * @param linkDataSource New linkDataSource value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setLinkDataSource(DataSource linkDataSource)  throws IllegalStateException {
        return (ResultTree)setAttribute("linkDataSource", linkDataSource == null ? null : linkDataSource.getOrCreateJsObj(), false);
    }

    /**
     * This property allows you to specify the dataSource to be used for fetching link information
     *  in a databound <i>multilink</i> tree.  A multilink tree is one where the same node is 
     *  allowed to appear in multiple places in the tree, and it is achieved by providing the node 
     *  data and the link data separately.  Nodes are provided via the normal 
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getDataSource dataSource}; <code>linkDataSource</code> is only used
     * for 
     *  fetching and updating link information.  
     *  <p>
     *  The <code>linkDataSource</code> is an ordinary {@link com.smartgwt.client.data.DataSource} that you implement
     *  just like any other.  However, for correct operation as a <code>linkDataSource</code>, it 
     *  must have the following:<ul>
     *  <li>A {@link com.smartgwt.client.data.DataSourceField#getPrimaryKey primaryKey field}.  Like any dataSource, a 
     *  <code>linkDataSource</code> is not fully functional without a <code>primaryKey</code> field</li>
     * <li>A field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getParentIdField Tree.parentIdField}</li>
     *  <li>A field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getIdField Tree.idField}</li>
     * <li>Optionally, a field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getLinkPositionField
     * Tree.linkPositionField}</li>
     *  <li>Fields for other values you may wish to store with the link, if any</li>
     *  </ul>
     *  <h3>Providing node data and link data</h3>
     *  Consider a structure for the components of a bicycle, greatly simplified:<pre>
     *          Frame
     *         /    \
     *      Wheel   Wheel
     *     /  \     /  \
     *   Hub Tire  Hub Tire
     *  </pre>
     *  Here, the two wheels are the same assembly, so really it should look like this:<pre>
     *        Frame
     *         | |               
     *        Wheel
     *        /   \     
     *      Hub  Tire 
     *  </pre>
     *  Normal Smart GWT trees cannot model this arrangement accurately because this is not 
     *  really a tree, it is a graph; trees do not contain multiple paths to a given node.  The 
     *  only way to handle this arrangement of nodes in a formal tree would be to make two copies
     *  of the "Wheel" node, at which point they are no longer the same thing. Either way, in a 
     *  {@link com.smartgwt.client.widgets.tree.TreeGrid}, we would have to visualise it like this:<pre> 
     *    Frame
     *       Wheel
     *          Hub
     *          Tire
     *       Wheel
     *          Hub
     *          Tire
     *  </pre>
     *  But if we use copies so that the the two wheels are no longer the same thing, changing 
     *  one of them will no longer change the other, which is a fundamental problem because in 
     *  this scenario, the two wheels really are the same thing.  Now, changing the name of the 
     *  "Hub" in one "Wheel" would not change it in the other; adding a "Spokes" node to the 
     *  second item would not also add it to the first.  Drag-reordering child nodes in one 
     *  "Wheel" would not re-order them in the other.  All of these things are incorrect, because
     *  the two wheels are the same thing.
     *  <p>
     *  Multilink trees provide a way to handle this arrangement without physical copying of the
     *  duplicate nodes, preserving the sameness of them and thus fixing all the problems
     *  described above.
     *  <p>
     *  The node data for the above tree, simplified, would be a flat list something like this:<pre>
     *    [
     *       { id: 1, description: "Frame" },
     *       { id: 2, description: "Wheel" },
     *       { id: 3, description: "Hub" },
     *       { id: 4, description: "Tire" }
     *    ]
     *  </pre>
     *  The link data would look like this:<pre>
     *    [
     *       { linkId: 1, parentId: 1, id: 2, position: 1 },
     *       { linkId: 2, parentId: 2, id: 3, position: 1 },
     *       { linkId: 3, parentId: 2, id: 4, position: 2 },
     *       { linkId: 4, parentId: 1, id: 2, position: 2 }
     *    ]
     *  </pre>
     * Or, if you were using {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataFetchMode linkDataFetchMode}
     * "single", you would combine 
     *  the node and link data into a single dataset like this:<pre>
     *    [
     *       { id: 1, position: 0, description: "Frame" },
     *       { parentId: 1, id: 2, position: 1, description: "Wheel", linkId: 1 },
     *       { parentId: 2, id: 3, position: 1, description: "Hub", linkId: 2 },
     *       { parentId: 2, id: 4, position: 2, description: "Tire", linkId: 3 },
     *       { parentId: 1, id: 2, position: 2, description: "Wheel", linkId: 4 }
     *    ]</pre>
     * 
     *  <p>
     * <b>NOTE:</b> It is also possible to create an unbound multilink tree - see {@link
     * com.smartgwt.client.widgets.tree.Tree#getLinkData Tree.linkData}.
     *
     * @return Current linkDataSource value. Default value is null
     */
    public DataSource getLinkDataSource()  {
        return DataSource.getOrCreateRef(getAttributeAsJavaScriptObject("linkDataSource"));
    }

    /**
     * This property allows you to specify the dataSource to be used for fetching link information
     *  in a databound <i>multilink</i> tree.  A multilink tree is one where the same node is 
     *  allowed to appear in multiple places in the tree, and it is achieved by providing the node 
     *  data and the link data separately.  Nodes are provided via the normal 
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getDataSource dataSource}; <code>linkDataSource</code> is only used
     * for 
     *  fetching and updating link information.  
     *  <p>
     *  The <code>linkDataSource</code> is an ordinary {@link com.smartgwt.client.data.DataSource} that you implement
     *  just like any other.  However, for correct operation as a <code>linkDataSource</code>, it 
     *  must have the following:<ul>
     *  <li>A {@link com.smartgwt.client.data.DataSourceField#getPrimaryKey primaryKey field}.  Like any dataSource, a 
     *  <code>linkDataSource</code> is not fully functional without a <code>primaryKey</code> field</li>
     * <li>A field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getParentIdField Tree.parentIdField}</li>
     *  <li>A field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getIdField Tree.idField}</li>
     * <li>Optionally, a field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getLinkPositionField
     * Tree.linkPositionField}</li>
     *  <li>Fields for other values you may wish to store with the link, if any</li>
     *  </ul>
     *  <h3>Providing node data and link data</h3>
     *  Consider a structure for the components of a bicycle, greatly simplified:<pre>
     *          Frame
     *         /    \
     *      Wheel   Wheel
     *     /  \     /  \
     *   Hub Tire  Hub Tire
     *  </pre>
     *  Here, the two wheels are the same assembly, so really it should look like this:<pre>
     *        Frame
     *         | |               
     *        Wheel
     *        /   \     
     *      Hub  Tire 
     *  </pre>
     *  Normal Smart GWT trees cannot model this arrangement accurately because this is not 
     *  really a tree, it is a graph; trees do not contain multiple paths to a given node.  The 
     *  only way to handle this arrangement of nodes in a formal tree would be to make two copies
     *  of the "Wheel" node, at which point they are no longer the same thing. Either way, in a 
     *  {@link com.smartgwt.client.widgets.tree.TreeGrid}, we would have to visualise it like this:<pre> 
     *    Frame
     *       Wheel
     *          Hub
     *          Tire
     *       Wheel
     *          Hub
     *          Tire
     *  </pre>
     *  But if we use copies so that the the two wheels are no longer the same thing, changing 
     *  one of them will no longer change the other, which is a fundamental problem because in 
     *  this scenario, the two wheels really are the same thing.  Now, changing the name of the 
     *  "Hub" in one "Wheel" would not change it in the other; adding a "Spokes" node to the 
     *  second item would not also add it to the first.  Drag-reordering child nodes in one 
     *  "Wheel" would not re-order them in the other.  All of these things are incorrect, because
     *  the two wheels are the same thing.
     *  <p>
     *  Multilink trees provide a way to handle this arrangement without physical copying of the
     *  duplicate nodes, preserving the sameness of them and thus fixing all the problems
     *  described above.
     *  <p>
     *  The node data for the above tree, simplified, would be a flat list something like this:<pre>
     *    [
     *       { id: 1, description: "Frame" },
     *       { id: 2, description: "Wheel" },
     *       { id: 3, description: "Hub" },
     *       { id: 4, description: "Tire" }
     *    ]
     *  </pre>
     *  The link data would look like this:<pre>
     *    [
     *       { linkId: 1, parentId: 1, id: 2, position: 1 },
     *       { linkId: 2, parentId: 2, id: 3, position: 1 },
     *       { linkId: 3, parentId: 2, id: 4, position: 2 },
     *       { linkId: 4, parentId: 1, id: 2, position: 2 }
     *    ]
     *  </pre>
     * Or, if you were using {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataFetchMode linkDataFetchMode}
     * "single", you would combine 
     *  the node and link data into a single dataset like this:<pre>
     *    [
     *       { id: 1, position: 0, description: "Frame" },
     *       { parentId: 1, id: 2, position: 1, description: "Wheel", linkId: 1 },
     *       { parentId: 2, id: 3, position: 1, description: "Hub", linkId: 2 },
     *       { parentId: 2, id: 4, position: 2, description: "Tire", linkId: 3 },
     *       { parentId: 1, id: 2, position: 2, description: "Wheel", linkId: 4 }
     *    ]</pre>
     * 
     *  <p>
     * <b>NOTE:</b> It is also possible to create an unbound multilink tree - see {@link
     * com.smartgwt.client.widgets.tree.Tree#getLinkData Tree.linkData}.
     *
     * @param linkDataSource New linkDataSource value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setLinkDataSource(String linkDataSource)  throws IllegalStateException {
        return (ResultTree)setAttribute("linkDataSource", linkDataSource, false);
    }

    /**
     * This property allows you to specify the dataSource to be used for fetching link information
     *  in a databound <i>multilink</i> tree.  A multilink tree is one where the same node is 
     *  allowed to appear in multiple places in the tree, and it is achieved by providing the node 
     *  data and the link data separately.  Nodes are provided via the normal 
     * {@link com.smartgwt.client.widgets.tree.ResultTree#getDataSource dataSource}; <code>linkDataSource</code> is only used
     * for 
     *  fetching and updating link information.  
     *  <p>
     *  The <code>linkDataSource</code> is an ordinary {@link com.smartgwt.client.data.DataSource} that you implement
     *  just like any other.  However, for correct operation as a <code>linkDataSource</code>, it 
     *  must have the following:<ul>
     *  <li>A {@link com.smartgwt.client.data.DataSourceField#getPrimaryKey primaryKey field}.  Like any dataSource, a 
     *  <code>linkDataSource</code> is not fully functional without a <code>primaryKey</code> field</li>
     * <li>A field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getParentIdField Tree.parentIdField}</li>
     *  <li>A field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getIdField Tree.idField}</li>
     * <li>Optionally, a field named the same as the {@link com.smartgwt.client.widgets.tree.Tree#getLinkPositionField
     * Tree.linkPositionField}</li>
     *  <li>Fields for other values you may wish to store with the link, if any</li>
     *  </ul>
     *  <h3>Providing node data and link data</h3>
     *  Consider a structure for the components of a bicycle, greatly simplified:<pre>
     *          Frame
     *         /    \
     *      Wheel   Wheel
     *     /  \     /  \
     *   Hub Tire  Hub Tire
     *  </pre>
     *  Here, the two wheels are the same assembly, so really it should look like this:<pre>
     *        Frame
     *         | |               
     *        Wheel
     *        /   \     
     *      Hub  Tire 
     *  </pre>
     *  Normal Smart GWT trees cannot model this arrangement accurately because this is not 
     *  really a tree, it is a graph; trees do not contain multiple paths to a given node.  The 
     *  only way to handle this arrangement of nodes in a formal tree would be to make two copies
     *  of the "Wheel" node, at which point they are no longer the same thing. Either way, in a 
     *  {@link com.smartgwt.client.widgets.tree.TreeGrid}, we would have to visualise it like this:<pre> 
     *    Frame
     *       Wheel
     *          Hub
     *          Tire
     *       Wheel
     *          Hub
     *          Tire
     *  </pre>
     *  But if we use copies so that the the two wheels are no longer the same thing, changing 
     *  one of them will no longer change the other, which is a fundamental problem because in 
     *  this scenario, the two wheels really are the same thing.  Now, changing the name of the 
     *  "Hub" in one "Wheel" would not change it in the other; adding a "Spokes" node to the 
     *  second item would not also add it to the first.  Drag-reordering child nodes in one 
     *  "Wheel" would not re-order them in the other.  All of these things are incorrect, because
     *  the two wheels are the same thing.
     *  <p>
     *  Multilink trees provide a way to handle this arrangement without physical copying of the
     *  duplicate nodes, preserving the sameness of them and thus fixing all the problems
     *  described above.
     *  <p>
     *  The node data for the above tree, simplified, would be a flat list something like this:<pre>
     *    [
     *       { id: 1, description: "Frame" },
     *       { id: 2, description: "Wheel" },
     *       { id: 3, description: "Hub" },
     *       { id: 4, description: "Tire" }
     *    ]
     *  </pre>
     *  The link data would look like this:<pre>
     *    [
     *       { linkId: 1, parentId: 1, id: 2, position: 1 },
     *       { linkId: 2, parentId: 2, id: 3, position: 1 },
     *       { linkId: 3, parentId: 2, id: 4, position: 2 },
     *       { linkId: 4, parentId: 1, id: 2, position: 2 }
     *    ]
     *  </pre>
     * Or, if you were using {@link com.smartgwt.client.widgets.tree.ResultTree#getLinkDataFetchMode linkDataFetchMode}
     * "single", you would combine 
     *  the node and link data into a single dataset like this:<pre>
     *    [
     *       { id: 1, position: 0, description: "Frame" },
     *       { parentId: 1, id: 2, position: 1, description: "Wheel", linkId: 1 },
     *       { parentId: 2, id: 3, position: 1, description: "Hub", linkId: 2 },
     *       { parentId: 2, id: 4, position: 2, description: "Tire", linkId: 3 },
     *       { parentId: 1, id: 2, position: 2, description: "Wheel", linkId: 4 }
     *    ]</pre>
     * 
     *  <p>
     * <b>NOTE:</b> It is also possible to create an unbound multilink tree - see {@link
     * com.smartgwt.client.widgets.tree.Tree#getLinkData Tree.linkData}.
     *
     * @return Current linkDataSource value. Default value is null
     */
    public String getLinkDataSourceAsString()  {
        return getAttributeAsString("linkDataSource");
    }
    

    /**
     * Does this resultTree load data incrementally as folders within the tree are opened, or is it all loaded in a single
     * request?  Must be true if {@link com.smartgwt.client.widgets.tree.ResultTree#getFetchMode fetchMode} is "paged" <p> See
     * the {@link com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter keepParentsOnFilter} overview for special 
     * considerations when filtering a load-on-demand tree
     *
     * @param loadDataOnDemand New loadDataOnDemand value. Default value is true
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     * @see com.smartgwt.client.widgets.tree.TreeGrid#setLoadDataOnDemand
     * @see com.smartgwt.client.widgets.tree.ResultTree#setUseSimpleCriteriaLOD
     */
    public ResultTree setLoadDataOnDemand(Boolean loadDataOnDemand)  throws IllegalStateException {
        return (ResultTree)setAttribute("loadDataOnDemand", loadDataOnDemand, false);
    }

    /**
     * Does this resultTree load data incrementally as folders within the tree are opened, or is it all loaded in a single
     * request?  Must be true if {@link com.smartgwt.client.widgets.tree.ResultTree#getFetchMode fetchMode} is "paged" <p> See
     * the {@link com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter keepParentsOnFilter} overview for special 
     * considerations when filtering a load-on-demand tree
     *
     * @return Current loadDataOnDemand value. Default value is true
     * @see com.smartgwt.client.widgets.tree.TreeGrid#getLoadDataOnDemand
     * @see com.smartgwt.client.widgets.tree.ResultTree#getUseSimpleCriteriaLOD
     */
    public Boolean getLoadDataOnDemand()  {
        Boolean result = getAttributeAsBoolean("loadDataOnDemand");
        return result == null ? true : result;
    }
    

    /**
     * This property allows you to specify the number of ancestor levels Smart GWT attempts  to retrieve with each request,
     * when using the built-in support for {@link com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter
     * keepParentsOnFilter} on {@link com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand} trees. 
     * See the  <code>keepParentsOnFilter</code> overview for details.
     *
     * @param matchingLeafJoinDepth New matchingLeafJoinDepth value. Default value is 3
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setMatchingLeafJoinDepth(Integer matchingLeafJoinDepth) {
        return (ResultTree)setAttribute("matchingLeafJoinDepth", matchingLeafJoinDepth, true);
    }

    /**
     * This property allows you to specify the number of ancestor levels Smart GWT attempts  to retrieve with each request,
     * when using the built-in support for {@link com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter
     * keepParentsOnFilter} on {@link com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand} trees. 
     * See the  <code>keepParentsOnFilter</code> overview for details.
     *
     * @return Current matchingLeafJoinDepth value. Default value is 3
     */
    public Integer getMatchingLeafJoinDepth()  {
        return getAttributeAsInt("matchingLeafJoinDepth");
    }
    

    /**
     * Selects the model used to construct the tree representation.  See {@link com.smartgwt.client.types.TreeModelType} for
     * the available options and their implications. <P> If the "parent" modelType is used, you can provide the initial
     * parent-linked data set to the tree via the {@link com.smartgwt.client.widgets.tree.Tree#getData Tree.data} attribute. 
     * If the "children" modelType is used, you can provide the initial tree structure to the Tree via the {@link
     * com.smartgwt.client.widgets.tree.Tree#getRoot Tree.root} attribute.
     * <p><b>Note : </b> This is an advanced setting</p>
     *
     * @param modelType New modelType value. Default value is "parent"
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @see com.smartgwt.client.widgets.tree.Tree#setData
     * @see com.smartgwt.client.widgets.tree.Tree#setRoot
     * @see <a href="http://www.smartclient.com/smartgwt/showcase/#tree_appearance_node_titles" target="examples">Node Titles Example</a>
     */
    public ResultTree setModelType(TreeModelType modelType) {
        return (ResultTree)setAttribute("modelType", modelType == null ? null : modelType.getValue(), true);
    }

    /**
     * Selects the model used to construct the tree representation.  See {@link com.smartgwt.client.types.TreeModelType} for
     * the available options and their implications. <P> If the "parent" modelType is used, you can provide the initial
     * parent-linked data set to the tree via the {@link com.smartgwt.client.widgets.tree.Tree#getData Tree.data} attribute. 
     * If the "children" modelType is used, you can provide the initial tree structure to the Tree via the {@link
     * com.smartgwt.client.widgets.tree.Tree#getRoot Tree.root} attribute.
     *
     * @return Current modelType value. Default value is "parent"
     * @see com.smartgwt.client.widgets.tree.Tree#getData
     * @see com.smartgwt.client.widgets.tree.Tree#getRoot
     * @see <a href="http://www.smartclient.com/smartgwt/showcase/#tree_appearance_node_titles" target="examples">Node Titles Example</a>
     */
    public TreeModelType getModelType()  {
        return EnumUtil.getEnum(TreeModelType.values(), getAttribute("modelType"));
    }
    

    /**
     * Sets {@link com.smartgwt.client.data.DataSource#getProgressiveLoading progressive loading mode} for this ResultTree. 
     * The ResultTree will copy this setting onto the {@link com.smartgwt.client.data.DSRequest}s that it issues, overriding
     * the OperationBinding- and DataSource-level settings, in cases where the use of progressive loading does not affect the
     * correctness of the tree's paging algorithm. <p> This setting is applied automatically by {@link
     * com.smartgwt.client.widgets.DataBoundComponent}s that have their own explicit setting for {@link
     * com.smartgwt.client.widgets.DataBoundComponent#getProgressiveLoading progressiveLoading}. <p> <b>Note:</b>  This
     * property only has an effect for {@link com.smartgwt.client.types.FetchMode fetchMode:"paged"} ResultTrees.
     *
     * @param progressiveLoading New progressiveLoading value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @see com.smartgwt.client.data.DataSource#setProgressiveLoading
     * @see com.smartgwt.client.docs.serverds.OperationBinding#progressiveLoading
     * @see com.smartgwt.client.data.DSRequest#setProgressiveLoading
     * @see com.smartgwt.client.docs.ProgressiveLoading Progressive Loading
     */
    public ResultTree setProgressiveLoading(Boolean progressiveLoading) {
        return (ResultTree)setAttribute("progressiveLoading", progressiveLoading, true);
    }

    /**
     * Sets {@link com.smartgwt.client.data.DataSource#getProgressiveLoading progressive loading mode} for this ResultTree. 
     * The ResultTree will copy this setting onto the {@link com.smartgwt.client.data.DSRequest}s that it issues, overriding
     * the OperationBinding- and DataSource-level settings, in cases where the use of progressive loading does not affect the
     * correctness of the tree's paging algorithm. <p> This setting is applied automatically by {@link
     * com.smartgwt.client.widgets.DataBoundComponent}s that have their own explicit setting for {@link
     * com.smartgwt.client.widgets.DataBoundComponent#getProgressiveLoading progressiveLoading}. <p> <b>Note:</b>  This
     * property only has an effect for {@link com.smartgwt.client.types.FetchMode fetchMode:"paged"} ResultTrees.
     *
     * @return Current progressiveLoading value. Default value is null
     * @see com.smartgwt.client.data.DataSource#getProgressiveLoading
     * @see com.smartgwt.client.docs.serverds.OperationBinding#progressiveLoading
     * @see com.smartgwt.client.data.DSRequest#getProgressiveLoading
     * @see com.smartgwt.client.docs.ProgressiveLoading Progressive Loading
     */
    public Boolean getProgressiveLoading()  {
        return getAttributeAsBoolean("progressiveLoading");
    }
    

    /**
     * How many tree nodes to retrieve at once from each large set of children in the tree. <P> Applicable only with
     * <code>fetchMode: "paged"</code>.  When a paged ResultTree is asked for rows that have not yet been loaded, it will fetch
     * adjacent rows that are likely to be required soon, in batches of this size.
     * <p><b>Note : </b> This is an advanced setting</p>
     *
     * @param resultSize New resultSize value. Default value is 75
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     * @see com.smartgwt.client.docs.TreeDataBinding Tree DataBinding
     */
    public ResultTree setResultSize(Integer resultSize)  throws IllegalStateException {
        return (ResultTree)setAttribute("resultSize", resultSize, false);
    }

    /**
     * How many tree nodes to retrieve at once from each large set of children in the tree. <P> Applicable only with
     * <code>fetchMode: "paged"</code>.  When a paged ResultTree is asked for rows that have not yet been loaded, it will fetch
     * adjacent rows that are likely to be required soon, in batches of this size.
     *
     * @return Current resultSize value. Default value is 75
     * @see com.smartgwt.client.docs.TreeDataBinding Tree DataBinding
     */
    public Integer getResultSize()  {
        return getAttributeAsInt("resultSize");
    }
    
    

    /**
     * For {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link tree}s only, should we send up the  {@link
     * com.smartgwt.client.widgets.tree.Tree#getParentIdField parentId} in fetch criteria if the criteria value is null?  If 
     * false, we remove the <code>parentId</code> from the criteria when  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource fetching link data}, <b>if</b> the criteria value is  null
     * (as it will be by default when fetching the direct child nodes of the tree's root). <p> Ignored for non-multiLink trees.
     *
     * @param sendNullParentInLinkDataCriteria New sendNullParentInLinkDataCriteria value. Default value is true
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setSendNullParentInLinkDataCriteria(Boolean sendNullParentInLinkDataCriteria)  throws IllegalStateException {
        return (ResultTree)setAttribute("sendNullParentInLinkDataCriteria", sendNullParentInLinkDataCriteria, false);
    }

    /**
     * For {@link com.smartgwt.client.widgets.tree.Tree#isMultiLinkTree multi-link tree}s only, should we send up the  {@link
     * com.smartgwt.client.widgets.tree.Tree#getParentIdField parentId} in fetch criteria if the criteria value is null?  If 
     * false, we remove the <code>parentId</code> from the criteria when  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLinkDataSource fetching link data}, <b>if</b> the criteria value is  null
     * (as it will be by default when fetching the direct child nodes of the tree's root). <p> Ignored for non-multiLink trees.
     *
     * @return Current sendNullParentInLinkDataCriteria value. Default value is true
     */
    public Boolean getSendNullParentInLinkDataCriteria()  {
        Boolean result = getAttributeAsBoolean("sendNullParentInLinkDataCriteria");
        return result == null ? true : result;
    }
    

    /**
     * For {@link com.smartgwt.client.types.FetchMode fetchMode:"local"} ResultTrees, this property lists field names  that
     * will be sent to the server if they are present in the criteria. <P> This property may be used to ensure a dataSource
     * receives the necessary criteria to populate a ResultTree's data, and also support {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter keepParentsOnFilter}.  <P> Note that for some
     * AdvancedCriteria it will not be possible to extract the subcriteria that apply to certain fields. See {@link
     * com.smartgwt.client.data.DataSource#splitCriteria DataSource.splitCriteria()} for details on how
     * serverFilterFields-applicable subcriteria are extracted from the specified criteria for the tree.
     *
     * @param serverFilterFields New serverFilterFields value. Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setServerFilterFields(String... serverFilterFields)  throws IllegalStateException {
        return (ResultTree)setAttribute("serverFilterFields", serverFilterFields, false);
    }

    /**
     * For {@link com.smartgwt.client.types.FetchMode fetchMode:"local"} ResultTrees, this property lists field names  that
     * will be sent to the server if they are present in the criteria. <P> This property may be used to ensure a dataSource
     * receives the necessary criteria to populate a ResultTree's data, and also support {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter keepParentsOnFilter}.  <P> Note that for some
     * AdvancedCriteria it will not be possible to extract the subcriteria that apply to certain fields. See {@link
     * com.smartgwt.client.data.DataSource#splitCriteria DataSource.splitCriteria()} for details on how
     * serverFilterFields-applicable subcriteria are extracted from the specified criteria for the tree.
     *
     * @return Current serverFilterFields value. Default value is null
     */
    public String[] getServerFilterFields()  {
        return com.smartgwt.client.util.ConvertTo.arrayOfString(getAttributeAsJavaScriptObject("serverFilterFields"));
    }
    

    /**
     * If true, indicates that your own server code will handle the complexities associated with the combination of {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter keepParentsOnFilter} and  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand}.  If this flag is true and your server
     * code does <i>not</i> handle those complexities, the results are undefined, but  most likely you will simply exclude
     * non-matching parents if your tree is load-on-demand,  which effectively means that filtering will be broken. <p> If this
     * flag is not set, Smart GWT will use its own automatic client-driven algorithm to ensure that
     * <code>keepParentsOnFilter</code> is honored on load-on-demand trees.  See the <code>keepParentsOnFilter</code> overview
     * for details
     *
     * @param serverKeepParentsOnFilter New serverKeepParentsOnFilter value. Default value is See Below
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     */
    public ResultTree setServerKeepParentsOnFilter(Boolean serverKeepParentsOnFilter) {
        return (ResultTree)setAttribute("serverKeepParentsOnFilter", serverKeepParentsOnFilter, true);
    }

    /**
     * If true, indicates that your own server code will handle the complexities associated with the combination of {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getKeepParentsOnFilter keepParentsOnFilter} and  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand}.  If this flag is true and your server
     * code does <i>not</i> handle those complexities, the results are undefined, but  most likely you will simply exclude
     * non-matching parents if your tree is load-on-demand,  which effectively means that filtering will be broken. <p> If this
     * flag is not set, Smart GWT will use its own automatic client-driven algorithm to ensure that
     * <code>keepParentsOnFilter</code> is honored on load-on-demand trees.  See the <code>keepParentsOnFilter</code> overview
     * for details
     *
     * @return Current serverKeepParentsOnFilter value. Default value is See Below
     */
    public Boolean getServerKeepParentsOnFilter()  {
        return getAttributeAsBoolean("serverKeepParentsOnFilter");
    }
    

    /**
     * When a successful Add, Update or Remove type operation fires on this ResultTree's  dataSource, if {@link
     * com.smartgwt.client.data.DSResponse#getData DSResponse.data} is unset, should we integrate the submitted data values
     * (from the request) into our data-set?
     * <p><b>Note : </b> This is an advanced setting</p>
     *
     * @param updateCacheFromRequest New updateCacheFromRequest value. Default value is true
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public ResultTree setUpdateCacheFromRequest(Boolean updateCacheFromRequest)  throws IllegalStateException {
        return (ResultTree)setAttribute("updateCacheFromRequest", updateCacheFromRequest, false);
    }

    /**
     * When a successful Add, Update or Remove type operation fires on this ResultTree's  dataSource, if {@link
     * com.smartgwt.client.data.DSResponse#getData DSResponse.data} is unset, should we integrate the submitted data values
     * (from the request) into our data-set?
     *
     * @return Current updateCacheFromRequest value. Default value is true
     */
    public Boolean getUpdateCacheFromRequest()  {
        Boolean result = getAttributeAsBoolean("updateCacheFromRequest");
        return result == null ? true : result;
    }
    

    /**
     * Whether or not we should skip promotion of a simple criteria to an {@link com.smartgwt.client.data.AdvancedCriteria}
     * when sending the {@link com.smartgwt.client.data.DSRequest} to load the children of a node in a {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand} or {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getFetchMode fetchMode:"paged"} <code>ResultTree</code>.  If the {@link
     * com.smartgwt.client.data.DSRequest#getTextMatchStyle DSRequest.textMatchStyle} is not "exact", we normally convert the
     * simple criteria to an {@link com.smartgwt.client.data.AdvancedCriteria} for correctness in matching the node name, but
     * setting this property to <code>true</code> will allow that to be skipped for backcompat with older releases.
     * <p><b>Note : </b> This is an advanced setting</p>
     *
     * @param useSimpleCriteriaLOD New useSimpleCriteriaLOD value. Default value is false
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for chaining setter calls
     * @see com.smartgwt.client.widgets.tree.TreeGrid#setAutoFetchTextMatchStyle
     * @see com.smartgwt.client.data.DataSource#setDefaultTextMatchStyle
     */
    public ResultTree setUseSimpleCriteriaLOD(boolean useSimpleCriteriaLOD) {
        return (ResultTree)setAttribute("useSimpleCriteriaLOD", useSimpleCriteriaLOD, true);
    }

    /**
     * Whether or not we should skip promotion of a simple criteria to an {@link com.smartgwt.client.data.AdvancedCriteria}
     * when sending the {@link com.smartgwt.client.data.DSRequest} to load the children of a node in a {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getLoadDataOnDemand loadDataOnDemand} or {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getFetchMode fetchMode:"paged"} <code>ResultTree</code>.  If the {@link
     * com.smartgwt.client.data.DSRequest#getTextMatchStyle DSRequest.textMatchStyle} is not "exact", we normally convert the
     * simple criteria to an {@link com.smartgwt.client.data.AdvancedCriteria} for correctness in matching the node name, but
     * setting this property to <code>true</code> will allow that to be skipped for backcompat with older releases.
     *
     * @return Current useSimpleCriteriaLOD value. Default value is false
     * @see com.smartgwt.client.widgets.tree.TreeGrid#getAutoFetchTextMatchStyle
     * @see com.smartgwt.client.data.DataSource#getDefaultTextMatchStyle
     */
    public boolean getUseSimpleCriteriaLOD()  {
        Boolean result = getAttributeAsBoolean("useSimpleCriteriaLOD");
        return result == null ? false : result;
    }
    

    // ********************* Methods ***********************
	/**
     * The ResultTree will call applyFilter() when it needs to locally filter the tree using the current filter criteria. <P>
     * Default behavior is to call {@link com.smartgwt.client.widgets.tree.Tree#getFilteredTree Tree.getFilteredTree()} to
     * obtain a new, filtered tree. <P> Override this method or {@link com.smartgwt.client.widgets.tree.Tree#getFilteredTree
     * Tree.getFilteredTree()} to implement your own client-side filtering behavior. Note that the original tree should not be
     * affected.
     * @param tree the source tree to be filtered
     * @param criteria the filter criteria
     * @param filterMode mode to use for filtering
     * @param dataSource dataSource for filtering if the Tree does not                                       already have one
     *
     * @return the filtered tree (copy)
     */
    public native Tree applyFilter(Tree tree, Criteria criteria, TreeFilterMode filterMode, DataSource dataSource) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "applyFilter", "Tree,Criteria,TreeFilterMode,DataSource");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
	    if(@com.smartgwt.client.data.Criterion::instanceOf(Ljava/lang/Object;)(criteria)){
	    	@com.smartgwt.client.util.JSOHelper::setAttribute(Lcom/google/gwt/core/client/JavaScriptObject;Ljava/lang/String;Ljava/lang/String;)(criteria.@com.smartgwt.client.data.Criterion::getJsObj()(),"_constructor","AdvancedCriteria");
	    }
        var ret = self.applyFilter(tree == null ? null : tree.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()(), criteria == null ? null : criteria.@com.smartgwt.client.core.DataClass::getJsObj()(), filterMode.@com.smartgwt.client.types.TreeFilterMode::getValue()(), dataSource == null ? null : dataSource.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()());
        if(ret == null) return null;
        return @com.smartgwt.client.widgets.tree.Tree::getOrCreateRef(Lcom/google/gwt/core/client/JavaScriptObject;)(ret);
    }-*/;

	/**
     * The ResultTree will call applyFilter() when it needs to locally filter the tree using the current filter criteria. <P>
     * Default behavior is to call {@link com.smartgwt.client.widgets.tree.Tree#getFilteredTree Tree.getFilteredTree()} to
     * obtain a new, filtered tree. <P> Override this method or {@link com.smartgwt.client.widgets.tree.Tree#getFilteredTree
     * Tree.getFilteredTree()} to implement your own client-side filtering behavior. Note that the original tree should not be
     * affected.
     * @param tree the source tree to be filtered
     * @param criteria the filter criteria
     * @param filterMode mode to use for filtering
     * @param dataSource dataSource for filtering if the Tree does not                                       already have one
     * @param requestProperties Request properties block. This allows developers to specify  properties that would impact the filter such as {@link
     * com.smartgwt.client.data.DSRequest#getTextMatchStyle DSRequest.textMatchStyle}
     *
     * @return the filtered tree (copy)
     */
    public native Tree applyFilter(Tree tree, Criteria criteria, TreeFilterMode filterMode, DataSource dataSource, DSRequest requestProperties) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "applyFilter", "Tree,Criteria,TreeFilterMode,DataSource,DSRequest");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
	    if(@com.smartgwt.client.data.Criterion::instanceOf(Ljava/lang/Object;)(criteria)){
	    	@com.smartgwt.client.util.JSOHelper::setAttribute(Lcom/google/gwt/core/client/JavaScriptObject;Ljava/lang/String;Ljava/lang/String;)(criteria.@com.smartgwt.client.data.Criterion::getJsObj()(),"_constructor","AdvancedCriteria");
	    }
        var ret = self.applyFilter(tree == null ? null : tree.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()(), criteria == null ? null : criteria.@com.smartgwt.client.core.DataClass::getJsObj()(), filterMode.@com.smartgwt.client.types.TreeFilterMode::getValue()(), dataSource == null ? null : dataSource.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()(), requestProperties == null ? null : requestProperties.@com.smartgwt.client.core.DataClass::getJsObj()());
        if(ret == null) return null;
        return @com.smartgwt.client.widgets.tree.Tree::getOrCreateRef(Lcom/google/gwt/core/client/JavaScriptObject;)(ret);
    }-*/;
	
	/**
     * Default behavior is to call {@link com.smartgwt.client.data.DataSource#compareCriteria DataSource.compareCriteria()} to
     * determine whether new criteria is equivalent to the old criteria (returns 0) or not. <P> See {@link
     * com.smartgwt.client.data.DataSource#compareCriteria DataSource.compareCriteria()} for a full explanation of the default
     * behavior. The {@link com.smartgwt.client.types.CriteriaPolicy} used is "dropOnChange". <P> Override this method or
     * {@link com.smartgwt.client.data.DataSource#compareCriteria DataSource.compareCriteria()} to implement your own
     * client-side filtering behavior.
     * @param newCriteria new filter criteria
     * @param oldCriteria old filter criteria
     *
     * @return 0 if the criteria are equivalent, -1 if the criteria are different
     * @see com.smartgwt.client.types.CriteriaPolicy
     */
    public native int compareCriteria(Criteria newCriteria, Criteria oldCriteria) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "compareCriteria", "Criteria,Criteria");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
	    if(@com.smartgwt.client.data.Criterion::instanceOf(Ljava/lang/Object;)(newCriteria)){
	    	@com.smartgwt.client.util.JSOHelper::setAttribute(Lcom/google/gwt/core/client/JavaScriptObject;Ljava/lang/String;Ljava/lang/String;)(newCriteria.@com.smartgwt.client.data.Criterion::getJsObj()(),"_constructor","AdvancedCriteria");
	    }
	    if(@com.smartgwt.client.data.Criterion::instanceOf(Ljava/lang/Object;)(oldCriteria)){
	    	@com.smartgwt.client.util.JSOHelper::setAttribute(Lcom/google/gwt/core/client/JavaScriptObject;Ljava/lang/String;Ljava/lang/String;)(oldCriteria.@com.smartgwt.client.data.Criterion::getJsObj()(),"_constructor","AdvancedCriteria");
	    }
        var ret = self.compareCriteria(newCriteria == null ? null : newCriteria.@com.smartgwt.client.core.DataClass::getJsObj()(), oldCriteria == null ? null : oldCriteria.@com.smartgwt.client.core.DataClass::getJsObj()());
        return ret;
    }-*/;

	/**
     * Default behavior is to call {@link com.smartgwt.client.data.DataSource#compareCriteria DataSource.compareCriteria()} to
     * determine whether new criteria is equivalent to the old criteria (returns 0) or not. <P> See {@link
     * com.smartgwt.client.data.DataSource#compareCriteria DataSource.compareCriteria()} for a full explanation of the default
     * behavior. The {@link com.smartgwt.client.types.CriteriaPolicy} used is "dropOnChange". <P> Override this method or
     * {@link com.smartgwt.client.data.DataSource#compareCriteria DataSource.compareCriteria()} to implement your own
     * client-side filtering behavior.
     * @param newCriteria new filter criteria
     * @param oldCriteria old filter criteria
     * @param requestProperties dataSource request properties
     *
     * @return 0 if the criteria are equivalent, -1 if the criteria are different
     * @see com.smartgwt.client.types.CriteriaPolicy
     */
    public native int compareCriteria(Criteria newCriteria, Criteria oldCriteria, DSRequest requestProperties) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "compareCriteria", "Criteria,Criteria,DSRequest");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
	    if(@com.smartgwt.client.data.Criterion::instanceOf(Ljava/lang/Object;)(newCriteria)){
	    	@com.smartgwt.client.util.JSOHelper::setAttribute(Lcom/google/gwt/core/client/JavaScriptObject;Ljava/lang/String;Ljava/lang/String;)(newCriteria.@com.smartgwt.client.data.Criterion::getJsObj()(),"_constructor","AdvancedCriteria");
	    }
	    if(@com.smartgwt.client.data.Criterion::instanceOf(Ljava/lang/Object;)(oldCriteria)){
	    	@com.smartgwt.client.util.JSOHelper::setAttribute(Lcom/google/gwt/core/client/JavaScriptObject;Ljava/lang/String;Ljava/lang/String;)(oldCriteria.@com.smartgwt.client.data.Criterion::getJsObj()(),"_constructor","AdvancedCriteria");
	    }
        var ret = self.compareCriteria(newCriteria == null ? null : newCriteria.@com.smartgwt.client.core.DataClass::getJsObj()(), oldCriteria == null ? null : oldCriteria.@com.smartgwt.client.core.DataClass::getJsObj()(), requestProperties == null ? null : requestProperties.@com.smartgwt.client.core.DataClass::getJsObj()());
        return ret;
    }-*/;
	
	/**
     * This callback fires whenever the resultTree receives new nodes from the server, after the new nodes have been integrated
     * into the tree.
     * @param parentNode The parentNode for which children were just loaded
     */
    public native void dataArrived(TreeNode parentNode) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "dataArrived", "TreeNode");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        self.dataArrived(parentNode.@com.smartgwt.client.core.DataClass::getJsObj()());
    }-*/;

	/**
     * Get the item in the openList at a particular position.
     * @param pos position of the node to get
     *
     * @return node at that position
     */
    public native TreeNode get(int pos) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "get", "int");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        var ret = self.get(pos);
        if(ret == null) return null;
        return @com.smartgwt.client.widgets.tree.TreeNode::getOrCreateRef(Lcom/google/gwt/core/client/JavaScriptObject;)(ret);
    }-*/;

	/**
     * Returns a copy of all {@link com.smartgwt.client.widgets.tree.ResultTree#getCriteria explicit} and  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getImplicitCriteria implicit} criteria currently applied to  this
     * <code>ResultTree</code>.
     *
     * @return combined criteria
     */
    public native Criteria getCombinedCriteria() /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "getCombinedCriteria", "");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        var ret = self.getCombinedCriteria();
        if(ret == null) return null;
        return @com.smartgwt.client.data.Criteria::getOrCreateRef(Lcom/google/gwt/core/client/JavaScriptObject;)(ret);
    }-*/;

	/**
     * Returns a copy of all {@link com.smartgwt.client.widgets.tree.ResultTree#getCriteria explicit} and  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getImplicitCriteria implicit} criteria currently applied to  this
     * <code>ResultTree</code>.
     *
     * @return combined criteria
     */
    public native AdvancedCriteria getCombinedCriteriaAsAdvancedCriteria() /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "getCombinedCriteriaAsAdvancedCriteria", "");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        var ret = self.getCombinedCriteria();
        if(ret == null) return null;
        return @com.smartgwt.client.data.AdvancedCriteria::getOrCreateRef(Lcom/google/gwt/core/client/JavaScriptObject;)(ret);
    }-*/;

	/**
     * Returns a snapshot of the current open state of this tree's data as a {@link com.smartgwt.client.docs.TreeGridOpenState}
     * object. <P> This object can be passed to {@link com.smartgwt.client.widgets.tree.ResultTree#setOpenState setOpenState()}
     * or {@link com.smartgwt.client.widgets.tree.TreeGrid#setOpenState TreeGrid.setOpenState()} to open the same set of
     * folders within the tree's data (assuming the nodes are still present in the data).
     *
     * @return current open state for the grid.
     * See {@link com.smartgwt.client.docs.TreeGridOpenState TreeGridOpenState}
     * @see com.smartgwt.client.widgets.tree.ResultTree#setOpenState
     */
    public native String getOpenState() /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "getOpenState", "");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        var ret = self.getOpenState();
        return ret;
    }-*/;

	/**
     * Get a range of items from the open list
     * @param start start position
     * @param end end position (NOT inclusive)
     *
     * @return list of nodes in the open list
     */
    public native TreeNode[] getRange(int start, int end) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "getRange", "int,int");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        var ret = self.getRange(start, end);
        if(ret == null) return null;
        return @com.smartgwt.client.util.ConvertTo::arrayOfTreeNode(Lcom/google/gwt/core/client/JavaScriptObject;)(ret);
    }-*/;

	/**
     * Manually invalidate this ResultTree's cache. <P> Generally a ResultTree will detect and incorporate updates to the
     * DataSource that provides its records, but when this is not possible, <code>invalidateCache()</code> allows manual cache
     * invalidation. <P> Components bound to this ResultTree will typically re-request the currently visible portion of the
     * dataset, causing the ResultTree to re-fetch data from the server.
     */
    public native void invalidateCache() /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "invalidateCache", "");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        self.invalidateCache();
    }-*/;

	/**
     * Replaces the existing children of a parent node.  This leaves the node in the loaded state (unless a partially loaded
     * set of children is specified using the optional <code>totalChildren</code> argument).  The supplied array of children
     * may be null or empty to indicate there are none, but if present must be in the standard format as would be sent from the
     * server, as described by {@link com.smartgwt.client.docs.TreeDataBinding}. <P> In particular, note that for a {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getFetchMode paged} <code>ResultTree</code>, each child node:<ul>: <li>can
     * have nested children spcified under the {@link com.smartgwt.client.widgets.tree.Tree#getChildrenProperty
     * Tree.childrenProperty} (but not via {@link com.smartgwt.client.widgets.tree.TreeNode#getId TreeNode.id}/{@link
     * com.smartgwt.client.widgets.tree.TreeNode#getParentId TreeNode.parentId} linking) <li>cannot be open unless it includes
     * either a complete set of children, or partial set of children and a childCount</ul>
     * @param parent parent of children
     * @param newChildren children to be set
     * @see com.smartgwt.client.widgets.tree.Tree#removeChildren
     * @see com.smartgwt.client.data.DataSource#updateCaches
     */
    public native void setChildren(TreeNode parent, List newChildren) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "setChildren", "TreeNode,List");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        self.setChildren(parent.@com.smartgwt.client.core.DataClass::getJsObj()(), newChildren);
    }-*/;

	/**
     * Replaces the existing children of a parent node.  This leaves the node in the loaded state (unless a partially loaded
     * set of children is specified using the optional <code>totalChildren</code> argument).  The supplied array of children
     * may be null or empty to indicate there are none, but if present must be in the standard format as would be sent from the
     * server, as described by {@link com.smartgwt.client.docs.TreeDataBinding}. <P> In particular, note that for a {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getFetchMode paged} <code>ResultTree</code>, each child node:<ul>: <li>can
     * have nested children spcified under the {@link com.smartgwt.client.widgets.tree.Tree#getChildrenProperty
     * Tree.childrenProperty} (but not via {@link com.smartgwt.client.widgets.tree.TreeNode#getId TreeNode.id}/{@link
     * com.smartgwt.client.widgets.tree.TreeNode#getParentId TreeNode.parentId} linking) <li>cannot be open unless it includes
     * either a complete set of children, or partial set of children and a childCount</ul>
     * @param parent parent of children
     * @param newChildren children to be set
     * @param totalChildren number of total children (if not all have been                                         provided as newChildren); only
     * allowed if paging
     * @see com.smartgwt.client.widgets.tree.Tree#removeChildren
     * @see com.smartgwt.client.data.DataSource#updateCaches
     */
    public native void setChildren(TreeNode parent, List newChildren, Integer totalChildren) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "setChildren", "TreeNode,List,Integer");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        self.setChildren(parent.@com.smartgwt.client.core.DataClass::getJsObj()(), newChildren, totalChildren == null ? null : totalChildren.@java.lang.Integer::intValue()());
    }-*/;
	
	/**
     * Reset the set of open folders within this tree's data to match the  {@link com.smartgwt.client.docs.TreeGridOpenState}
     * object passed in. <P> Used to restore previous state retrieved from the tree by a call to  {@link
     * com.smartgwt.client.widgets.tree.ResultTree#getOpenState getOpenState()}.
     * @param openState Object describing the desired set of open folders.
     * See {@link com.smartgwt.client.docs.TreeGridOpenState TreeGridOpenState}
     * @see com.smartgwt.client.widgets.tree.ResultTree#getOpenState
     * @see com.smartgwt.client.docs.TreeGridOpenState TreeGridOpenState
     */
    public native void setOpenState(String openState) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "setOpenState", "String");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        self.setOpenState(openState);
    }-*/;

	/**
     * Unload the children of a folder, returning the folder to the "unloaded" state.
     * @param node folder in question
     * @deprecated It's recommended that you instead use {@link com.smartgwt.client.widgets.tree.Tree#reloadChildren Tree.reloadChildren()}
     * to reload the children of a folder, or {@link com.smartgwt.client.widgets.tree.Tree#removeChildren
     * Tree.removeChildren()} if you need to clear the cached children of a folder to add specific local data.
     */
    public native void unloadChildren(TreeNode node) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "unloadChildren", "TreeNode");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
        self.unloadChildren(node.@com.smartgwt.client.core.DataClass::getJsObj()());
    }-*/;

	/**
     * Will changing the criteria for this resultTree require fetching new data from the server or can the new criteria be
     * satisfied from data already cached on the client? <p> This method can be used to determine whether {@link
     * com.smartgwt.client.widgets.tree.TreeGrid#fetchData TreeGrid.fetchData()} or  {@link
     * com.smartgwt.client.widgets.tree.TreeGrid#filterData TreeGrid.filterData()} will cause a server side fetch when passed a
     * certain set of  criteria.
     * @param newCriteria new criteria to test.
     *
     * @return true if server fetch would be required to satisfy new criteria.
     */
    public native Boolean willFetchData(Criteria newCriteria) /*-{
        if (this.@com.smartgwt.client.core.BaseClass::isConfigOnly()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPostConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)(this.@java.lang.Object::getClass()(), "willFetchData", "Criteria");
        }
        var self = this.@com.smartgwt.client.core.BaseClass::getOrCreateJsObj()();
	    if(@com.smartgwt.client.data.Criterion::instanceOf(Ljava/lang/Object;)(newCriteria)){
	    	@com.smartgwt.client.util.JSOHelper::setAttribute(Lcom/google/gwt/core/client/JavaScriptObject;Ljava/lang/String;Ljava/lang/String;)(newCriteria.@com.smartgwt.client.data.Criterion::getJsObj()(),"_constructor","AdvancedCriteria");
	    }
        var ret = self.willFetchData(newCriteria == null ? null : newCriteria.@com.smartgwt.client.core.DataClass::getJsObj()());
        if(ret == null) return null;
        return @com.smartgwt.client.util.JSOHelper::toBoolean(Z)(ret);
    }-*/;


    // ********************* Static Methods ***********************

    /** 
     * Class level method to set the default properties of this class.  If set, then all
     * existing and subsequently created instances of this class will automatically have
     * default properties corresponding to
     * the properties set on the SmartGWT class instance passed to this function before its
     * underlying SmartClient JS object was created.
     * This is a powerful feature that eliminates the need for users to create a separate
     * hierarchy of subclasses that only alter the default properties of this class. Can also
     * be used for skinning / styling purposes.  <P> <b>Note:</b> This method is intended for
     * setting default attributes only and will affect all instances of the underlying class
     * (including those automatically generated in JavaScript).  This method should not be used
     * to apply standard EventHandlers or override methods for a class - use a custom subclass
     * instead.  Calling this method after instances have been created can result in undefined
     * behavior, since it bypasses any setters and a class instance may have already examined 
     * a particular property and not be expecting any changes through this route.
     *
     * @param resultTreeProperties properties that should be used as new defaults when instances of this class are created
     * @see com.smartgwt.client.docs.SGWTProperties
     */
    public static native void setDefaultProperties(ResultTree resultTreeProperties) /*-{
        if (resultTreeProperties.@com.smartgwt.client.core.BaseClass::isCreated()()) {
            @com.smartgwt.client.util.ConfigUtil::warnOfPreConfigInstantiation(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/Class;)(ResultTree.@java.lang.Object::getClass()(), "setDefaultProperties", resultTreeProperties.@java.lang.Object::getClass()());
        }
        resultTreeProperties.@com.smartgwt.client.core.BaseClass::setConfigOnly(Z)(true);
    	var properties = resultTreeProperties.@com.smartgwt.client.core.BaseClass::getConfig()();
        properties = @com.smartgwt.client.util.JSOHelper::cleanProperties(Lcom/google/gwt/core/client/JavaScriptObject;Z)(properties,true);
        $wnd.isc.ResultTree.addProperties(properties);
    }-*/;

    // ***********************************************************



    /**
     * What {@link com.smartgwt.client.data.DataSource} is this resultTree associated with?
     *
     * @param dataSource dataSource Default value is null
     * @return {@link com.smartgwt.client.widgets.tree.ResultTree ResultTree} instance, for
     * chaining setter calls
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     * @see com.smartgwt.client.docs.Databinding Databinding overview and related methods
     * @see <a href="http://www.smartclient.com/smartgwt/showcase/#grid_databinding_ds_fields" target="examples">DataSource fields Example</a>
     */
    public ResultTree setDataSource(DataSource dataSource)  throws IllegalStateException {
    	if(dataSource==null) {
    		throw new IllegalArgumentException("Invalid call to setDataSource() passing null.  If you're having trouble with loading DataSources, please see the following FAQ: http://forums.smartclient.com/showthread.php?t=8159#aDSLoad");
    	}
        return (ResultTree)setAttribute("dataSource", dataSource.getOrCreateJsObj(), false);
    }

    /**
     * What {@link com.smartgwt.client.data.DataSource} is this resultTree associated with?
     *
     *
     * @return DataSource
     * @see com.smartgwt.client.docs.Databinding Databinding overview and related methods
     * @see <a href="http://www.smartclient.com/smartgwt/showcase/#grid_databinding_ds_fields" target="examples">DataSource fields Example</a>
     */
    public DataSource getDataSource()  {
        return DataSource.getOrCreateRef(getAttributeAsJavaScriptObject("dataSource"));
    }

    /**
     * This attribute may be used to specify a root value for the parentIdField of this resultTree. This overrides the default
     * {@link com.smartgwt.client.data.DataSourceField#getRootValue rootValue} for this tree, allowing a component to navigate
     * a tree starting at a specific node. <P> May be overridden via {@link
     * com.smartgwt.client.widgets.tree.TreeGrid#getTreeRootValue treeRootValue} for ResultTrees generated by a TreeGrid
     * component.
     *
     * @param rootNode rootNode Default value is null
     * @throws IllegalStateException this property cannot be changed after the underlying component has been created
     */
    public void setRootNode(JavaScriptObject rootNode)  throws IllegalStateException {
        setAttribute("rootNode", rootNode, false);
    }

    /**
     * This attribute may be used to specify a root value for the parentIdField of this resultTree. This overrides the default
     * {@link com.smartgwt.client.data.DataSourceField#getRootValue rootValue} for this tree, allowing a component to navigate
     * a tree starting at a specific node. <P> May be overridden via {@link
     * com.smartgwt.client.widgets.tree.TreeGrid#getTreeRootValue treeRootValue} for ResultTrees generated by a TreeGrid
     * component.
     *
     *
     * @return Object
     */
    public JavaScriptObject getRootNode()  {
        return getAttributeAsJavaScriptObject("rootNode");
    }

}
