Package com.smartgwt.client.widgets.form.fields

# Class PickTreeItem

java.lang.Object
com.smartgwt.client.core.JsObject
com.smartgwt.client.core.DataClass
com.smartgwt.client.core.RefDataClass
com.smartgwt.client.data.Field
com.smartgwt.client.widgets.form.fields.FormItem
com.smartgwt.client.widgets.form.fields.CanvasItem
com.smartgwt.client.widgets.form.fields.PickTreeItem

All Implemented Interfaces:
  `HasHandlers`, `HasBlurHandlers`, `HasCanEditChangedHandlers`, `HasChangedHandlers`, `HasChangeHandlers`, `HasClickHandlers`, `HasDoubleClickHandlers`, `HasEditorEnterHandlers`, `HasEditorExitHandlers`, `HasFocusHandlers`, `HasIconClickHandlers`, `HasIconKeyPressHandlers`, `HasItemHoverHandlers`, `HasKeyDownHandlers`, `HasKeyPressHandlers`, `HasKeyUpHandlers`, `HasPendingStatusChangedHandlers`, `HasPickerIconClickHandlers`, `HasReadOnlyDisplayChangedHandlers`, `HasShowContextMenuHandlers`, `HasShowValueHandlers`, `HasTitleClickHandlers`, `HasTitleDoubleClickHandlers`, `HasTitleHoverHandlers`, `HasValueHoverHandlers`, `HasValueIconClickHandlers`

Direct Known Subclasses:
  `IPickTreeItem`

public class PickTreeItem extends CanvasItem
FormItem that allows picking a value from a hierarchical data model.

- ## Nested Class Summary

  ## Nested classes/interfaces inherited from class com.smartgwt.client.widgets.form.fields.FormItem

  `FormItem.CustomStateGetter, FormItem.StateCustomizer`

- ## Field Summary

  ### Fields inherited from class com.smartgwt.client.widgets.form.fields.FormItem

  `configOnly, scClassName, warnOnEditorTypeConversion, warnOnEditorTypeConversionDefault`

  ### Fields inherited from class com.smartgwt.client.core.RefDataClass

  `id`

  ### Fields inherited from class com.smartgwt.client.core.DataClass

  `factoryCreated, factoryProperties`

  ### Fields inherited from class com.smartgwt.client.core.JsObject

  `jsObj`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `PickTreeItem()`
  `PickTreeItem(JavaScriptObject jsObj)`
  `PickTreeItem(String name)`
  `PickTreeItem(String name, String title)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `static void`
  `changeAutoChildDefaults(String autoChildName, Canvas defaults)`
  Changes the defaults for Canvas AutoChildren named `autoChildName`.
  `static void`
  `changeAutoChildDefaults(String autoChildName, FormItem defaults)`
  Changes the defaults for FormItem AutoChildren named `autoChildName`.
  `static void`
  `changePickerIconDefaults(FormItemIcon defaults)`
  `void`
  `fetchData()`
  Only applies to databound items (see `optionDataSource`).
  Performs a fetch type operation on this item's DataSource to retrieve/refresh the tree of data displayed as rows in this items menu.
  `Canvas`
  `getButton()`
  The visible button created by a PickTreeItem is an `com.smartgwt.client.types.AutoChild` of type `TreeMenuButton` by default.
  `Boolean`
  `getCanSelectParentItems()`
  If true, clicking or pressing Enter on a menu item that has a submenu will select that item (with standard behavior of hiding the menus, calling click handlers, etc) instead of showing the submenu.
  `DataSource`
  `getDataSource()`
  The DataSource that this component should bind to for default fields and for performing `DSRequest`.
  `String`
  `getDisplayField()`
  Specifies an alternative field from which display values should be retrieved for this item.
  `String`
  `getEmptyDisplayValue()`
  Text to display when this form item has a null or undefined value.
  `String`
  `getEmptyMenuMessage()`
  This message will be displayed as a single, disabled option in any empty menu/submenu created from this item's data tree.
  `Boolean`
  `getLoadDataOnDemand()`
  If this is a databound item, should the load our set of possible options be loaded on demand (as submenus are displayed), or upfront?
  `DataSource`
  `getOptionDataSource()`
  If set, this FormItem will map stored values to display values as though a `com.smartgwt.client.types.ValueMap` were specified, by fetching records from the specified `optionDataSource` and extracting the `valueField` and `displayField` in loaded records, to derive one valueMap entry per record loaded from the optionDataSource.
  `static PickTreeItem`
  `getOrCreateRef(JavaScriptObject jsObj)`
  `String`
  `getPendingButtonStyle()`
  When `showPending` is `true`, the `Button.baseStyle` of the `button` when in the "Pending" visual state.
  `ReadOnlyDisplayAppearance`
  `getReadOnlyDisplay()`
  If `FormItem.canEdit` is set to `false`, how should this item be displayed to the user?
  `Boolean`
  `getShouldSaveValue()`
  Should this item's value be saved in the form's values and hence returned from `form.getValues()`?
  `String`
  `getValueField()`
  Which field in the tree-data should be returned as this item's value? If unspecified, the path will be used
  `Boolean`
  `pendingStatusChanged(DynamicForm form, FormItem item, boolean pendingStatus, Object newValue, Object value)`
  Notification method called when `showPending` is enabled and this `PickTreeItem` should either clear or show its pending visual state.
  `PickTreeItem`
  `setCanSelectParentItems(Boolean canSelectParentItems)`
  If true, clicking or pressing Enter on a menu item that has a submenu will select that item (with standard behavior of hiding the menus, calling click handlers, etc) instead of showing the submenu.
  `void`
  `setDataProperties(Tree dataProperties)`
  For a `PickTreeItem` that uses a DataSource, these properties will be passed to the automatically-created ResultTree.
  `void`
  `setDataSource(DataSource dataSource)`
  If specified, the tree of possible options will be derived from the dataSource as a ResultTree, rather than using this.valueTree.
  `static void`
  `setDefaultProperties(PickTreeItem pickTreeItemProperties)`
  Class level method to set the default properties of this class.
  `PickTreeItem`
  `setDisplayField(String displayField)`
  Specifies an alternative field from which display values should be retrieved for this item.
  `PickTreeItem`
  `setEmptyDisplayValue(String emptyDisplayValue)`
  Text to display when this form item has a null or undefined value.
  `PickTreeItem`
  `setEmptyMenuMessage(String emptyMenuMessage)`
  This message will be displayed as a single, disabled option in any empty menu/submenu created from this item's data tree.
  `PickTreeItem`
  `setLoadDataOnDemand(Boolean loadDataOnDemand)`
  If this is a databound item, should the load our set of possible options be loaded on demand (as submenus are displayed), or upfront?
  `PickTreeItem`
  `setOptionDataSource(DataSource optionDataSource)`
  If set, this FormItem will map stored values to display values as though a `com.smartgwt.client.types.ValueMap` were specified, by fetching records from the specified `optionDataSource` and extracting the `valueField` and `displayField` in loaded records, to derive one valueMap entry per record loaded from the optionDataSource.
  `PickTreeItem`
  `setPendingButtonStyle(String pendingButtonStyle)`
  When `showPending` is `true`, the `Button.baseStyle` of the `button` when in the "Pending" visual state.
  `PickTreeItem`
  `setReadOnlyDisplay(ReadOnlyDisplayAppearance readOnlyDisplay)`
  If `FormItem.canEdit` is set to `false`, how should this item be displayed to the user?
  `PickTreeItem`
  `setShouldSaveValue(Boolean shouldSaveValue)`
  Should this item's value be saved in the form's values and hence returned from `form.getValues()`?
  `PickTreeItem`
  `setValueField(String valueField)`
  Which field in the tree-data should be returned as this item's value? If unspecified, the path will be used
  `void`
  `setValueTree(Tree valueTree)`
  A `Tree` of options from which the user can select.

  ### Methods inherited from class com.smartgwt.client.widgets.form.fields.CanvasItem

  `addCanEditChangedHandler, addReadOnlyDisplayChangedHandler, addShowValueHandler, createCanvas, getApplyPromptToCanvas, getAutoDestroy, getCanvas, getEditCriteriaInInnerForm, getHeight, getHeightAsString, getMaxHeight, getMinHeight, getMultiple, getOverflow, getPrompt, hasAdvancedCriteria, isFocused, setApplyPromptToCanvas, setAutoDestroy, setCanEditCriterionPredicate, setCanvas, setCriterionGetter, setCriterionSetter, setDefaultProperties, setEditCriteriaInInnerForm, setHeight, setHeight, setMaxHeight, setMinHeight, setMultiple, setOverflow, setPrompt, setShouldDisableCanvasCustomizer, setupCanvasConstructor, storeValue, storeValue, storeValue, updateCanvasTabPosition`

  ### Methods inherited from class com.smartgwt.client.widgets.form.fields.FormItem

  `_getValue, addBlurHandler, addChangedHandler, addChangeHandler, addClickHandler, addDoubleClickHandler, addEditorEnterHandler, addEditorExitHandler, addFocusHandler, addIcon, addIcon, addIconClickHandler, addIconKeyPressHandler, addItemHoverHandler, addKeyDownHandler, addKeyPressHandler, addKeyUpHandler, addPendingStatusChangedHandler, addPickerIconClickHandler, addShowContextMenuHandler, addTitleClickHandler, addTitleDoubleClickHandler, addTitleHoverHandler, addValueHoverHandler, addValueIconClickHandler, applyFormula, asSGWTComponent, blurItem, canEditCriterion, checkFormItemType, clearErrors, clearValue, disable, disableIcon, enable, enableIcon, error, error, errorIfNotCreated, focusAfterItem, focusInItem, getAccessKey, getAlign, getAllowExpressions, getAlwaysFetchMissingValues, getAlwaysShowControlBox, getApplyAlignToText, getApplyHeightToTextBox, getAriaRole, getAttribute, getAttributeAsBoolean, getAttributeAsBoolean, getAttributeAsDate, getAttributeAsDouble, getAttributeAsFloat, getAttributeAsInt, getAttributeAsJavaScriptObject, getAttributeAsObject, getAttributeAsString, getAutoComplete, getAutoCompleteKeywords, getBrowserInputType, getBrowserSpellCheck, getCanEdit, getCanEditOpaqueValues, getCanFocus, getCanHover, getCanSelectText, getCanTabToIcons, getCanvasAutoChild, getCellHeight, getCellStyle, getChangeOnKeypress, getClassName, getClipStaticValue, getClipTitle, getConfig, getContainerWidget, getControlStyle, getCriteriaField, getCriterion, getCriterion, getCursorPosition, getCustomState, getDataPath, getDateFormatter, getDecimalPad, getDecimalPrecision, getDefaultIconSrc, getDefaultOperator, getDefaultValue, getDeferActionConversion, getDestroyed, getDisabled, getDisabledHover, getDisableIconsOnReadOnly, getDisplayFieldName, getDisplayValue, getDisplayValue, getEditorTypeConfig, getEditPendingCSSText, getEditProxyConstructor, getEmptyValueIcon, getEnableTitleClickWhenDisabled, getEndRow, getErrorIconHeight, getErrorIconProperties, getErrorIconSrc, getErrorIconWidth, getErrorMessageWidth, getErrors, getEscapeHTML, getExportFormat, getExtraControlTableCSS, getExtraTextBoxCSS, getFetchMissingValues, getFieldName, getFilterLocally, getForeignDisplayField, getForm, getFormat, getFormItemAutoChild, getFormula, getFullDataPath, getGlobalTabIndex, getGridColNum, getGridRowNum, getHidden, getHint, getHintStyle, getHoverAlign, getHoverDelay, getHoverFocusKey, getHoverHeight, getHoverHeightAsString, getHoverOpacity, getHoverPersist, getHoverStyle, getHoverVAlign, getHoverWidth, getHoverWidthAsString, getIcon, getIconBaseStyle, getIconHeight, getIconHSpace, getIconPageRect, getIconPrompt, getIconRect, getIcons, getIconTabPosition, getIconVAlign, getIconWidth, getID, getImageURLPrefix, getImageURLSuffix, getImplicitSave, getImplicitSaveOnBlur, getInputFormat, getLeft, getLinearColSpan, getLinearColSpanAsString, getLinearEndRow, getLinearEndRowAsString, getLinearStartRow, getLinearStartRowAsString, getLinearWidth, getLinearWidthAsString, getListGrid, getLoadingDisplayValue, getLocateItemBy, getMinHintWidth, getMultipleValueSeparator, getName, getNullOriginalValueText, getOperator, getOptionCriteria, getOptionDataSourceAsString, getOptionFilterContext, getOptionOperationId, getOptionTextMatchStyle, getOriginalValueMessage, getPageLeft, getPageRect, getPageTop, getPaletteDefaults, getPermanentlyHidden, getPicker, getPickerIcon, getPickerIcon, getPickerIconHeight, getPickerIconName, getPickerIconPrompt, getPickerIconProperties, getPickerIconSrc, getPickerIconStyle, getPickerIconTabPosition, getPickerIconWidth, getPixelHeight, getPixelWidth, getPrintReadOnlyTextBoxStyle, getPrintTextBoxStyle, getPrintTitleStyle, getReadOnlyCanSelectText, getReadOnlyControlStyle, getReadOnlyHover, getReadOnlyTextBoxStyle, getReadOnlyWhen, getRect, getRedrawOnChange, getRejectInvalidValueOnChange, getRequired, getRequiredMessage, getRequiredRightTitlePrefix, getRequiredRightTitleSuffix, getRequiredTitlePrefix, getRequiredTitleSuffix, getRequiredWhen, getRightTitlePrefix, getRightTitleSuffix, getRowSpan, getSaveOnEnter, getScClassName, getSelectedRecord, getSelectOnClick, getSelectOnFocus, getShowClippedTitleOnHover, getShowClippedValueOnHover, getShowDeletions, getShowDisabled, getShowDisabledIconsOnFocus, getShowDisabledPickerIconOnFocus, getShowErrorIcon, getShowErrorIconInline, getShowErrorStyle, getShowErrorText, getShowFocused, getShowFocusedErrorState, getShowFocusedIcons, getShowFocusedPickerIcon, getShowHint, getShowIcons, getShowIconsOnFocus, getShowImageAsURL, getShowOldValueInHover, getShowOver, getShowOverIcons, getShowPending, getShowPickerIcon, getShowPickerIconOnFocus, getShowRTL, getShowTitle, getShowValueIconOnly, getShowVoiceAssistIcon, getStartRow, getStaticHeight, getStopOnError, getStoreDisplayValues, getSupportsCutPasteEvents, getSuppressOptionDSFallback, getSuppressValueIcon, getSynchronousValidation, getTabIndex, getTextAlign, getTextBoxStyle, getTextBoxVPad, getTextFormula, getTimeFormatter, getTitle, getTitleAlign, getTitleColSpan, getTitleOrientation, getTitlePrefix, getTitleStyle, getTitleSuffix, getTitleVAlign, getTooltip, getTop, getTreatEmptyAsNull, getType, getUpdateControlOnOver, getUpdatePickerIconOnOver, getUpdateTextBoxOnOver, getUseAdvancedCriteria, getUseDisabledHintStyleForReadOnly, getUseLocalDisplayFieldValue, getValidateOnChange, getValidateOnExit, getValidOperators, getVAlign, getValue, getValueAsFloat, getValueAsInteger, getValueAsLong, getValueAsRecordList, getValueDeselectedCSSText, getValueFieldName, getValueIconAriaRole, getValueIconHeight, getValueIconLeftPadding, getValueIconRightPadding, getValueIconSize, getValueIconWidth, getValueMap, getValueMapAsArray, getVisible, getVisibleHeight, getVisibleTitleWidth, getVisibleWhen, getVisibleWidth, getWarnOnEditorTypeConversion, getWarnOnEditorTypeConversionDefault, getWidth, getWidthAsString, getWrapHintText, getWrapStaticValue, getWrapTitle, handleWarnOnEditorTypeConversion, hasErrors, hide, hideIcon, invalidateDisplayValueCache, isAssignableFrom, isConfigOnly, isCreated, isCutEvent, isDisabled, isDrawn, isInGrid, isPasteEvent, isVisible, linkToInstanceUponCreate, mapDisplayToValue, mapValueToDisplay, mapValueToDisplay, mapValueToDisplay, redraw, redraw, removeIcon, selectedRecordChanged, setAccessKey, setAlign, setAllowExpressions, setAlwaysFetchMissingValues, setAlwaysShowControlBox, setApplyAlignToText, setApplyHeightToTextBox, setAriaRole, setAriaState, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAutoChildConstructor, setAutoChildProperties, setAutoChildProperties, setAutoChildProperties, setAutoChildVisibility, setAutoComplete, setAutoCompleteKeywords, setBrowserInputType, setBrowserSpellCheck, setCanEdit, setCanEditOpaqueValues, setCanFocus, setCanHover, setCanSelectText, setCanTabToIcons, setCellHeight, setCellStyle, setChangeOnKeypress, setClipStaticValue, setClipTitle, setColSpan, setColSpan, setConfigOnly, setControlStyle, setCriteriaField, setCriterion, setCustomStateGetter, setDataPath, setDateFormatter, setDecimalPad, setDecimalPrecision, setDefaultIconSrc, setDefaultOperator, setDefaultProperties, setDefaultValue, setDefaultValue, setDefaultValue, setDefaultValue, setDefaultValue, setDefaultValue, setDefaultValue, setDeferActionConversion, setDisabled, setDisabledHover, setDisableIconsOnReadOnly, setDisplayFormat, setDisplayFormat, setEditorProperties, setEditorType, setEditorType, setEditorType, setEditorValueFormatter, setEditorValueParser, setEditPendingCSSText, setEditProxyConstructor, setEmptyValueIcon, setEnableTitleClickWhenDisabled, setEndRow, setErrorFormatter, setErrorIconHeight, setErrorIconProperties, setErrorIconSrc, setErrorIconWidth, setErrorMessageWidth, setErrorOrientation, setErrors, setErrors, setEscapeHTML, setExportFormat, setExtraControlTableCSS, setExtraTextBoxCSS, setFetchMissingValues, setFilterLocally, setForeignDisplayField, setFormat, setFormula, setGlobalTabIndex, setHidden, setHint, setHintStyle, setHoverAlign, setHoverDelay, setHoverFocusKey, setHoverHeight, setHoverHeight, setHoverOpacity, setHoverPersist, setHoverStyle, setHoverVAlign, setHoverWidth, setHoverWidth, setIconBaseStyle, setIconDisabled, setIconHeight, setIconHSpace, setIconPrompt, setIcons, setIconShowOnFocus, setIconVAlign, setIconWidth, setID, setImageURLPrefix, setImageURLSuffix, setImplicitSave, setImplicitSaveOnBlur, setInitHandler, setInputFormat, setInputTransformer, setItemHoverFormatter, setItemTitleHoverFormatter, setItemValueHoverFormatter, setJavaScriptObject, setLeft, setLinearColSpan, setLinearColSpan, setLinearEndRow, setLinearEndRow, setLinearStartRow, setLinearStartRow, setLinearWidth, setLinearWidth, setLoadingDisplayValue, setLocateItemBy, setMinHintWidth, setMultipleValueSeparator, setName, setNullOriginalValueText, setNullProperty, setOperator, setOptionCriteria, setOptionDataSource, setOptionFilterContext, setOptionOperationId, setOptionTextMatchStyle, setOriginalValueMessage, setPermanentlyHidden, setPickerIconHeight, setPickerIconName, setPickerIconPrompt, setPickerIconProperties, setPickerIconSrc, setPickerIconStyle, setPickerIconWidth, setPrintReadOnlyTextBoxStyle, setPrintTextBoxStyle, setPrintTitleStyle, setProperty, setProperty, setProperty, setProperty, setProperty, setReadOnlyCanSelectText, setReadOnlyControlStyle, setReadOnlyHover, setReadOnlyTextBoxStyle, setReadOnlyWhen, setRedrawOnChange, setRejectInvalidValueOnChange, setRequired, setRequiredMessage, setRequiredRightTitlePrefix, setRequiredRightTitleSuffix, setRequiredTitlePrefix, setRequiredTitleSuffix, setRequiredWhen, setRightTitlePrefix, setRightTitleSuffix, setRowSpan, setSaveOnEnter, setScClassName, setSelectOnClick, setSelectOnFocus, setShowClippedTitleOnHover, setShowClippedValueOnHover, setShowDeletions, setShowDisabled, setShowDisabledIconsOnFocus, setShowDisabledPickerIconOnFocus, setShowErrorIcon, setShowErrorIconInline, setShowErrorStyle, setShowErrorText, setShowFocused, setShowFocusedErrorState, setShowFocusedIcons, setShowFocusedPickerIcon, setShowHint, setShowIcons, setShowIconsOnFocus, setShowIfCondition, setShowImageAsURL, setShowOldValueInHover, setShowOver, setShowOverIcons, setShowPending, setShowPickerIcon, setShowPickerIconOnFocus, setShowRTL, setShowTitle, setShowValueIconOnly, setShowVoiceAssistIcon, setStartRow, setStateCustomizer, setStaticHeight, setStopOnError, setStoreDisplayValues, setSupportsCutPasteEvents, setSuppressOptionDSFallback, setSuppressValueIcon, setSynchronousValidation, setTabIndex, setTextAlign, setTextBoxStyle, setTextBoxVPad, setTextFormula, setTimeFormatter, setTitle, setTitleAlign, setTitleColSpan, setTitleHoverFormatter, setTitleOrientation, setTitlePrefix, setTitleStyle, setTitleSuffix, setTitleVAlign, setTooltip, setTop, setTreatEmptyAsNull, setType, setUpdateControlOnOver, setUpdatePickerIconOnOver, setUpdateTextBoxOnOver, setUseAdvancedCriteria, setUseDisabledHintStyleForReadOnly, setUseLocalDisplayFieldValue, setUseObjectFactoryForTypeFallback, setValidateOnChange, setValidateOnExit, setValidators, setValidOperators, setVAlign, setValue, setValue, setValue, setValue, setValue, setValue, setValueByDisplayValue, setValueByDisplayValue, setValueDeselectedCSSText, setValueFormatter, setValueHoverFormatter, setValueIconAriaRole, setValueIconHeight, setValueIconLeftPadding, setValueIconMapper, setValueIconRightPadding, setValueIcons, setValueIconSize, setValueIconWidth, setValueMap, setValueMap, setVisible, setVisibleWhen, setWarnOnEditorTypeConversion, setWarnOnEditorTypeConversionDefault, setWidth, setWidth, setWrapHintText, setWrapStaticValue, setWrapTitle, shouldApplyHeightToTextBox, shouldFetchMissingValue, shouldSaveOnEnter, shouldStopKeyPressBubbling, show, showIcon, showPicker, stopHover, storeValue, updateState, validate, valueClipped`

  ### Methods inherited from class com.smartgwt.client.data.Field

  `getCanExport, getExportTitle, getPrimaryKey, getSortByField, setCanExport, setExportTitle, setPrimaryKey, setSortByField`

  ### Methods inherited from class com.smartgwt.client.core.RefDataClass

  `getRef, getRef, internalSetID`

  ### Methods inherited from class com.smartgwt.client.core.DataClass

  `applyFactoryProperties, doAddHandler, fireEvent, getAttributeAsDoubleArray, getAttributeAsElement, getAttributeAsIntArray, getAttributeAsLong, getAttributeAsMap, getAttributeAsObject, getAttributeAsRecord, getAttributeAsStringArray, getAttributes, getHandlerCount, isFactoryCreated, setAttribute, setAttribute, setAttribute, setAttributeAsJavaObject, setFactoryCreated`

  ### Methods inherited from class com.smartgwt.client.core.JsObject

  `equals, getJsObj, hashCode, setJsObj`

  ### Methods inherited from class java.lang.Object

  `clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

  ### Methods inherited from interface com.google.gwt.event.shared.HasHandlers

  `fireEvent`

- ## Constructor Details

  - ### PickTreeItem

    public PickTreeItem()

  - ### PickTreeItem

    public PickTreeItem(JavaScriptObject jsObj)

  - ### PickTreeItem

    public PickTreeItem(String name)

  - ### PickTreeItem

    public PickTreeItem(String name, String title)

- ## Method Details

  - ### getOrCreateRef

    public static PickTreeItem getOrCreateRef(JavaScriptObject jsObj)

  - ### changeAutoChildDefaults

    public static void changeAutoChildDefaults(String autoChildName, Canvas defaults)
    Changes the defaults for Canvas AutoChildren named `autoChildName`.
    Parameters:
      `autoChildName` - name of an AutoChild to customize the defaults for.
      `defaults` - Canvas defaults to apply. These defaults override any existing properties without destroying or wiping out non-overridden properties. For usage tips on this param, see `SGWTProperties`.
    See Also:
      - `AutoChildUsage`

  - ### changeAutoChildDefaults

    public static void changeAutoChildDefaults(String autoChildName, FormItem defaults)
    Changes the defaults for FormItem AutoChildren named `autoChildName`.
    Parameters:
      `autoChildName` - name of an AutoChild to customize the defaults for.
      `defaults` - FormItem defaults to apply. These defaults override any existing properties without destroying or wiping out non-overridden properties. For usage tips on this param, see `SGWTProperties`.
    See Also:
      - `AutoChildUsage`

  - ### changePickerIconDefaults

    public static void changePickerIconDefaults(FormItemIcon defaults)

  - ### getButton

    public Canvas getButton()
    The visible button created by a PickTreeItem is an `com.smartgwt.client.types.AutoChild` of type `TreeMenuButton` by default.

    This component is an AutoChild named "button". For an overview of how to use and configure AutoChildren, see `Using AutoChildren`.

    Returns:
      Current button value. Default value is null

  - ### setCanSelectParentItems

    public PickTreeItem setCanSelectParentItems(Boolean canSelectParentItems)
    If true, clicking or pressing Enter on a menu item that has a submenu will select that item (with standard behavior of hiding the menus, calling click handlers, etc) instead of showing the submenu.
    Parameters:
      `canSelectParentItems` - New canSelectParentItems value. Default value is null
    Returns:
      `PickTreeItem` instance, for chaining setter calls
    See Also:
      - `Selection`
      - Editing Example

  - ### getCanSelectParentItems

    public Boolean getCanSelectParentItems()
    If true, clicking or pressing Enter on a menu item that has a submenu will select that item (with standard behavior of hiding the menus, calling click handlers, etc) instead of showing the submenu.
    Returns:
      Current canSelectParentItems value. Default value is null
    See Also:
      - `Selection`
      - Editing Example

  - ### setDisplayField

    public PickTreeItem setDisplayField(String displayField)
    Specifies an alternative field from which display values should be retrieved for this item.

    If this item is not databound (`dataSource` is unset), this is implemented by picking up the value of the specified field from the `valueTree`.

    Otherwise this item will attempt to map its underlying value to a display value by retrieving a record from the `dataSource` where the `valueField` matches this item's value, and displaying the `displayField` value from that record.

    Overrides:
      `setDisplayField` in class `FormItem`
    Parameters:
      `displayField` - New displayField value. Default value is null
    Returns:
      `PickTreeItem` instance, for chaining setter calls
    See Also:
      - `FormItem.getDisplayFieldName()`
      - `FormItem.invalidateDisplayValueCache()`
      - `DataBinding`

  - ### getDisplayField

    public String getDisplayField()
    Specifies an alternative field from which display values should be retrieved for this item.

    If this item is not databound (`dataSource` is unset), this is implemented by picking up the value of the specified field from the `valueTree`.

    Otherwise this item will attempt to map its underlying value to a display value by retrieving a record from the `dataSource` where the `valueField` matches this item's value, and displaying the `displayField` value from that record.

    Overrides:
      `getDisplayField` in class `FormItem`
    Returns:
      Current displayField value. Default value is null
    See Also:
      - `FormItem.getDisplayFieldName()`
      - `FormItem.invalidateDisplayValueCache()`
      - `DataBinding`

  - ### setEmptyDisplayValue

    public PickTreeItem setEmptyDisplayValue(String emptyDisplayValue)
    Text to display when this form item has a null or undefined value.

    If the formItem has a databound pickList, and its `FormItem.displayField` or `FormItem.valueField` (if the former isn't set) has an undefined emptyCellValue field, that field will automatically be set using the emptyDisplayValue property.

    If the emptyDisplayValue is null (the default) then this item will use the standard title of the tree menu button that is shown when no values are selected.
    If this method is called after the component has been drawn/initialized: Setter for `emptyDisplayValue`.

    Overrides:
      `setEmptyDisplayValue` in class `FormItem`
    Parameters:
      `emptyDisplayValue` - New emptyDisplayValue value. Default value is null
    Returns:
      `PickTreeItem` instance, for chaining setter calls
    See Also:
      - `HTMLString`

  - ### getEmptyDisplayValue

    public String getEmptyDisplayValue()
    Text to display when this form item has a null or undefined value.

    If the formItem has a databound pickList, and its `FormItem.displayField` or `FormItem.valueField` (if the former isn't set) has an undefined emptyCellValue field, that field will automatically be set using the emptyDisplayValue property.

    If the emptyDisplayValue is null (the default) then this item will use the standard title of the tree menu button that is shown when no values are selected.

    Overrides:
      `getEmptyDisplayValue` in class `FormItem`
    Returns:
      Current emptyDisplayValue value. Default value is null
    See Also:
      - `HTMLString`

  - ### setEmptyMenuMessage

    public PickTreeItem setEmptyMenuMessage(String emptyMenuMessage)
    This message will be displayed as a single, disabled option in any empty menu/submenu created from this item's data tree.

    Note : This is an advanced setting

    Parameters:
      `emptyMenuMessage` - New emptyMenuMessage value. Default value is "No items to display"
    Returns:
      `PickTreeItem` instance, for chaining setter calls
    See Also:
      - `HTMLString`
      - Picktree Example

  - ### getEmptyMenuMessage

    public String getEmptyMenuMessage()
    This message will be displayed as a single, disabled option in any empty menu/submenu created from this item's data tree.
    Returns:
      Current emptyMenuMessage value. Default value is "No items to display"
    See Also:
      - `HTMLString`
      - Picktree Example

  - ### setLoadDataOnDemand

    public PickTreeItem setLoadDataOnDemand(Boolean loadDataOnDemand)
    If this is a databound item, should the load our set of possible options be loaded on demand (as submenus are displayed), or upfront?

    Note : This is an advanced setting

    Parameters:
      `loadDataOnDemand` - New loadDataOnDemand value. Default value is null
    Returns:
      `PickTreeItem` instance, for chaining setter calls

  - ### getLoadDataOnDemand

    public Boolean getLoadDataOnDemand()
    If this is a databound item, should the load our set of possible options be loaded on demand (as submenus are displayed), or upfront?
    Returns:
      Current loadDataOnDemand value. Default value is null

  - ### setOptionDataSource

    public PickTreeItem setOptionDataSource(DataSource optionDataSource)
    If set, this FormItem will map stored values to display values as though a `com.smartgwt.client.types.ValueMap` were specified, by fetching records from the specified `optionDataSource` and extracting the `valueField` and `displayField` in loaded records, to derive one valueMap entry per record loaded from the optionDataSource.

    With the default setting of `fetchMissingValues`, fetches will be initiated against the optionDataSource any time the FormItem has a non-null value and no corresponding display value is available. This includes when the form is first initialized, as well as any subsequent calls to `FormItem.setValue()`, such as may happen when `DynamicForm.editRecord()` is called. Retrieved values are automatically cached by the FormItem.

    Note that if a normal, static `valueMap` is also specified for the field (either directly in the form item or as part of the field definition in the dataSource), it will be preferred to the data derived from the optionDataSource for whatever mappings are present.

    In a databound form, if `FormItem.displayField` is specified for a FormItem and `optionDataSource` is unset, `optionDataSource` will default to the form's current DataSource

    Overrides:
      `setOptionDataSource` in class `FormItem`
    Parameters:
      `optionDataSource` - New optionDataSource value. Default value is null
    Returns:
      `PickTreeItem` instance, for chaining setter calls
    See Also:
      - `FormItem.invalidateDisplayValueCache()`
      - List - Combo Box Example

  - ### getOptionDataSource

    public DataSource getOptionDataSource()
    If set, this FormItem will map stored values to display values as though a `com.smartgwt.client.types.ValueMap` were specified, by fetching records from the specified `optionDataSource` and extracting the `valueField` and `displayField` in loaded records, to derive one valueMap entry per record loaded from the optionDataSource.

    With the default setting of `fetchMissingValues`, fetches will be initiated against the optionDataSource any time the FormItem has a non-null value and no corresponding display value is available. This includes when the form is first initialized, as well as any subsequent calls to `FormItem.setValue()`, such as may happen when `DynamicForm.editRecord()` is called. Retrieved values are automatically cached by the FormItem.

    Note that if a normal, static `valueMap` is also specified for the field (either directly in the form item or as part of the field definition in the dataSource), it will be preferred to the data derived from the optionDataSource for whatever mappings are present.

    In a databound form, if `FormItem.displayField` is specified for a FormItem and `optionDataSource` is unset, `optionDataSource` will default to the form's current DataSource

    Overrides:
      `getOptionDataSource` in class `FormItem`
    Returns:
      Current optionDataSource value. Default value is null
    See Also:
      - `FormItem.invalidateDisplayValueCache()`
      - List - Combo Box Example

  - ### setPendingButtonStyle

    public PickTreeItem setPendingButtonStyle(String pendingButtonStyle)
    When `showPending` is `true`, the `Button.baseStyle` of the `button` when in the "Pending" visual state.

    If unset, then the `baseStyle` of the button is not changed.

    Parameters:
      `pendingButtonStyle` - New pendingButtonStyle value. Default value is "buttonPending"
    Returns:
      `PickTreeItem` instance, for chaining setter calls
    See Also:
      - `CSSStyleName`

  - ### getPendingButtonStyle

    public String getPendingButtonStyle()
    When `showPending` is `true`, the `Button.baseStyle` of the `button` when in the "Pending" visual state.

    If unset, then the `baseStyle` of the button is not changed.

    Returns:
      Current pendingButtonStyle value. Default value is "buttonPending"
    See Also:
      - `CSSStyleName`

  - ### setReadOnlyDisplay

    public PickTreeItem setReadOnlyDisplay(ReadOnlyDisplayAppearance readOnlyDisplay)
    If `FormItem.canEdit` is set to `false`, how should this item be displayed to the user?

    For PickTreeItems, this setting affects only the item's title - the button itself will always appear disabled when canEdit is false, since buttons don't provide `readOnly` or `static` appearances.

    Overrides:
      `setReadOnlyDisplay` in class `FormItem`
    Parameters:
      `readOnlyDisplay` - New readOnlyDisplay value. Default value is null
    Returns:
      `PickTreeItem` instance, for chaining setter calls
    See Also:
      - `DynamicForm.setReadOnlyDisplay(com.smartgwt.client.types.ReadOnlyDisplayAppearance)`
      - `Appearance overview and related methods`

  - ### getReadOnlyDisplay

    public ReadOnlyDisplayAppearance getReadOnlyDisplay()
    If `FormItem.canEdit` is set to `false`, how should this item be displayed to the user?

    For PickTreeItems, this setting affects only the item's title - the button itself will always appear disabled when canEdit is false, since buttons don't provide `readOnly` or `static` appearances.

    Overrides:
      `getReadOnlyDisplay` in class `FormItem`
    Returns:
      Current readOnlyDisplay value. Default value is null
    See Also:
      - `DynamicForm.getReadOnlyDisplay()`
      - `Appearance overview and related methods`

  - ### setShouldSaveValue

    public PickTreeItem setShouldSaveValue(Boolean shouldSaveValue)
    Should this item's value be saved in the form's values and hence returned from `form.getValues()`?

    `shouldSaveValue:false` is used to mark formItems which do not correspond to the underlying data model and should not save a value into the form's `values`. Example includes visual separators, password re-type fields, or checkboxes used to show/hide other form items.

    A `shouldSaveValue:false` item should be given a value either via `FormItem.defaultValue` or by calling `form.setValue(item, value)` or `formItem.setValue(value)`. Providing a value via `form.values` or `form.setValues()` will automatically switch the item to `shouldSaveValue:true`.

    Note that

    - if an item is shouldSaveValue true, but has no name, a warning is logged, and shouldSaveValue will be set to false.
    Overrides:
      `setShouldSaveValue` in class `CanvasItem`
    Parameters:
      `shouldSaveValue` - New shouldSaveValue value. Default value is true
    Returns:
      `PickTreeItem` instance, for chaining setter calls

  - ### getShouldSaveValue

    public Boolean getShouldSaveValue()
    Should this item's value be saved in the form's values and hence returned from `form.getValues()`?

    `shouldSaveValue:false` is used to mark formItems which do not correspond to the underlying data model and should not save a value into the form's `values`. Example includes visual separators, password re-type fields, or checkboxes used to show/hide other form items.

    A `shouldSaveValue:false` item should be given a value either via `FormItem.defaultValue` or by calling `form.setValue(item, value)` or `formItem.setValue(value)`. Providing a value via `form.values` or `form.setValues()` will automatically switch the item to `shouldSaveValue:true`.

    Note that

    - if an item is shouldSaveValue true, but has no name, a warning is logged, and shouldSaveValue will be set to false.
    Overrides:
      `getShouldSaveValue` in class `CanvasItem`
    Returns:
      Current shouldSaveValue value. Default value is true

  - ### setValueField

    public PickTreeItem setValueField(String valueField)
    Which field in the tree-data should be returned as this item's value? If unspecified, the path will be used
    Overrides:
      `setValueField` in class `FormItem`
    Parameters:
      `valueField` - New valueField value. Default value is null
    Returns:
      `PickTreeItem` instance, for chaining setter calls
    See Also:
      - Picktree Example

  - ### getValueField

    public String getValueField()
    Which field in the tree-data should be returned as this item's value? If unspecified, the path will be used
    Overrides:
      `getValueField` in class `FormItem`
    Returns:
      Current valueField value. Default value is null
    See Also:
      - Picktree Example

  - ### fetchData

    public void fetchData()
    Only applies to databound items (see `optionDataSource`).
    Performs a fetch type operation on this item's DataSource to retrieve/refresh the tree of data displayed as rows in this items menu.

  - ### pendingStatusChanged

    public Boolean pendingStatusChanged(DynamicForm form, FormItem item, boolean pendingStatus, Object newValue, Object value)
    Notification method called when `showPending` is enabled and this `PickTreeItem` should either clear or show its pending visual state.

    The default behavior is that the `titleStyle` and `cellStyle` are updated to include/exclude the "Pending" suffix. In addition, when displayed in the pending state and a `pendingButtonStyle` is set, then the `button`'s `baseStyle` is set to `pendingButtonStyle`. Returning `false` will cancel this default behavior.

    Parameters:
      `form` - the managing `DynamicForm` instance.
      `item` - the form item itself (also available as "this").
      `pendingStatus` - `true` if the item should show its pending visual state; `false` otherwise.
      `newValue` - the current form item value.
      `value` - the value that would be restored by a call to `DynamicForm.resetValues()`.
    Returns:
      `false` to cancel the default behavior.

  - ### setDefaultProperties

    public static void setDefaultProperties(PickTreeItem pickTreeItemProperties)
    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 of the class instance passed to this function. 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.

    Note: 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.

    Parameters:
      `pickTreeItemProperties` - properties that should be used as new defaults when instances of this class are created
    See Also:
      - `SGWTProperties`

  - ### setDataSource

    public void setDataSource(DataSource dataSource)
    If specified, the tree of possible options will be derived from the dataSource as a ResultTree, rather than using this.valueTree. Options can be loaded on demand or up front according to `loadDataOnDemand`.

    Note : This is an advanced setting

    Parameters:
      `dataSource` - dataSource Default value is null

  - ### getDataSource

    public DataSource getDataSource()
    The DataSource that this component should bind to for default fields and for performing `DSRequest`.

    Can be specified as either a DataSource instance or the String ID of a DataSource.

    Returns:
      DataSource

  - ### setValueTree

    public void setValueTree(Tree valueTree)
    A `Tree` of options from which the user can select.
    Parameters:
      `valueTree` - valueTree Default value is null

  - ### setDataProperties

    public void setDataProperties(Tree dataProperties)
    For a `PickTreeItem` that uses a DataSource, these properties will be passed to the automatically-created ResultTree. This can be used for various customizations such as modifying the automatically-chosen `parentIdField`.
    Parameters:
      `dataProperties` - dataProperties Default value is null
    See Also:
      - `Databinding overview and related methods`