/*
 * 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.
 */

import com.smartgwt.client.types.Alignment;
import com.smartgwt.client.types.DragAppearance;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.Label;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.layout.VStack;

import com.google.gwt.core.client.EntryPoint;

public class LayerSample implements EntryPoint {

public void onModuleLoad() {

Canvas canvas = new Canvas();

Label bottomLabel = new Label("Bottom");
        bottomLabel.setAlign(Alignment.CENTER);
        bottomLabel.setShowEdges(true);
        bottomLabel.setBackgroundColor("lightblue");
        canvas.addChild(bottomLabel);

final Label middleLabel = new Label("Middle");
        middleLabel.setAlign(Alignment.CENTER);
        middleLabel.setShowEdges(true);
        middleLabel.setBackgroundColor("lightgreen");
        middleLabel.setLeft(60);
        middleLabel.setTop(60);
        canvas.addChild(middleLabel);

Label topLabel = new Label("Top");
        topLabel.setAlign(Alignment.CENTER);
        topLabel.setShowEdges(true);
        topLabel.setBackgroundColor("pink");
        topLabel.setLeft(120);
        topLabel.setTop(120);
        canvas.addChild(topLabel);

final Label dragWidget = new Label("Drag Me");
        dragWidget.setAlign(Alignment.CENTER);
        dragWidget.setShowEdges(true);
        dragWidget.setBackgroundColor("lightyellow");
        dragWidget.setLeft(120);
        dragWidget.setTop(0);
        dragWidget.setCanDragReposition(true);
        dragWidget.setDragAppearance(DragAppearance.TARGET);
        canvas.addChild(dragWidget);

VStack vStack = new VStack();
        vStack.setLeft(250);
        vStack.setMembersMargin(10);

IButton frontButton = new IButton("Front");
        frontButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                dragWidget.bringToFront();
            }
        });
        vStack.addMember(frontButton);

IButton backButton = new IButton("Back");
        backButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                dragWidget.sendToBack();
            }
        });
        vStack.addMember(backButton);

IButton aboveMiddleButton = new IButton("Above Middle");
        aboveMiddleButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                dragWidget.moveAbove(middleLabel);
            }
        });
        vStack.addMember(aboveMiddleButton);

IButton belowMiddleButton = new IButton("Below Middle");
        belowMiddleButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                dragWidget.moveBelow(middleLabel);
            }
        });
        vStack.addMember(belowMiddleButton);

canvas.addChild(vStack);
        canvas.draw();
    }

}