Drag and drop to move parts and folders within and between the trees (Smart GWT)
/*
* SmartGWT (GWT for SmartClient)
* Copyright 2008 and beyond, Isomorphic Software, Inc.
*
* SmartGWT 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. SmartGWT 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.
*/
package com.smartgwt.sample.showcase.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.types.Alignment;
import com.smartgwt.client.types.DragDataAction;
import com.smartgwt.client.types.TreeModelType;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.Img;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.layout.HStack;
import com.smartgwt.client.widgets.layout.VStack;
import com.smartgwt.client.widgets.tree.Tree;
import com.smartgwt.client.widgets.tree.TreeGrid;
import com.smartgwt.client.widgets.tree.TreeNode;
public class Showcase implements EntryPoint {
public void onModuleLoad() {
RootPanel.get().add(getViewPanel());
}
public Canvas getViewPanel() {
Tree grid1Tree = new Tree();
grid1Tree.setModelType(TreeModelType.CHILDREN);
grid1Tree.setNameProperty("Name");
grid1Tree.setRoot(new PartsTreeNode("Root", new PartsTreeNode("Bin 1", new PartsTreeNode(
"Blue Cube", "cube_blue.png"), new PartsTreeNode("Yellow Cube", "cube_yellow.png"),
new PartsTreeNode("Green Cube", "cube_green.png")), new PartsTreeNode("Bin 2",
new PartsTreeNode("Blue Piece", "pawn_blue.png"), new PartsTreeNode("Green Piece",
"pawn_green.png"), new PartsTreeNode("Yellow Piece", "pawn_yellow.png"))));
final PartsTreeGrid grid1 = new PartsTreeGrid();
grid1.setDragDataAction(DragDataAction.MOVE);
grid1.setData(grid1Tree);
grid1.getData().openAll();
Tree grid2Tree = new Tree();
grid2Tree.setModelType(TreeModelType.CHILDREN);
grid2Tree.setNameProperty("Name");
grid2Tree.setRoot(new PartsTreeNode("Root", new PartsTreeNode("Bin 3", new PartsTreeNode(
"Blue Part", "piece_blue.png"), new PartsTreeNode("Green Part", "piece_green.png"),
new PartsTreeNode("Yellow Part", "piece_yellow.png"))));
final PartsTreeGrid grid2 = new PartsTreeGrid();
grid2.setLeft(250);
grid2.setData(grid2Tree);
grid2.getData().openAll();
VStack moveControls = new VStack(10);
moveControls.setWidth(32);
moveControls.setHeight(74);
moveControls.setLayoutAlign(Alignment.CENTER);
moveControls.addMember(new Img("icons/32/arrow_right.png", 32, 32) {
{
addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
grid2.transferSelectedData(grid1);
}
});
}
});
moveControls.addMember(new Img("icons/32/arrow_left.png", 32, 32) {
{
addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
grid1.transferSelectedData(grid2);
}
});
}
});
HStack grids = new HStack(10);
grids.setHeight(160);
grids.addMember(grid1);
grids.addMember(moveControls);
grids.addMember(grid2);
return grids;
}
public static class PartsTreeGrid extends TreeGrid {
public PartsTreeGrid() {
setWidth(200);
setHeight(200);
setShowEdges(true);
setBorder("0px");
setBodyStyleName("normal");
setAlternateRecordStyles(true);
setShowHeader(false);
setLeaveScrollbarGap(false);
setEmptyMessage("<br>Drag & drop parts here");
setManyItemsImage("cubes_all.png");
setAppImgDir("pieces/16/");
setCanReorderRecords(true);
setCanAcceptDroppedRecords(true);
setCanDragRecordsOut(true);
}
}
public static class PartsTreeNode extends TreeNode {
public PartsTreeNode(String name, String icon) {
this(name, icon, new PartsTreeNode[] {});
}
public PartsTreeNode(String name, PartsTreeNode... children) {
this(name, null, children);
}
public PartsTreeNode(String name, String icon, PartsTreeNode... children) {
setAttribute("Name", name);
setAttribute("children", children);
if (icon != null)
setAttribute("icon", icon);
}
}
}
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