001: /*
002: * Copyright (C) 2004 TiongHiang Lee
003: *
004: * This library is free software; you can redistribute it and/or
005: * modify it under the terms of the GNU Lesser General Public
006: * License as published by the Free Software Foundation; either
007: * version 2.1 of the License, or (at your option) any later version.
008: *
009: * This library is distributed in the hope that it will be useful,
010: * but WITHOUT ANY WARRANTY; without even the implied warranty of
011: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012: * Lesser General Public License for more details.
013: *
014: * You should have received a copy of the GNU Lesser General Public
015: * License along with this library; if not, write to the Free Software
016: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
017: *
018: * Email: thlee@onemindsoft.org
019: */
020:
021: package org.onemind.swingweb.client.gwt.widget;
022:
023: import com.google.gwt.user.client.DOM;
024: import com.google.gwt.user.client.Event;
025: import com.google.gwt.user.client.ui.*;
026:
027: public class Tree extends Container implements ITreeNode {
028:
029: private TreeNodeInfo _info = new TreeNodeInfo();
030:
031: private com.google.gwt.user.client.ui.Tree _tree;
032:
033: private boolean _appendSelection;
034:
035: private boolean _isDoubleClick;
036:
037: private ClickDispatch _clickDispatch = new ClickDispatch();
038:
039: private class InnerTree extends com.google.gwt.user.client.ui.Tree
040: implements TreeListener {
041:
042: private TreeItem _lastSelected = null;
043:
044: public InnerTree() {
045: super ();
046: super .sinkEvents(Event.ONDBLCLICK);
047: addTreeListener(this );
048: }
049:
050: public void onBrowserEvent(Event event) {
051: int eventType = DOM.eventGetType(event);
052: switch (eventType) {
053: case Event.ONMOUSEDOWN: //only clear it on mouse down
054: _lastSelected = null;
055: break;
056: case Event.ONMOUSEUP:
057: if (_lastSelected != null) {
058: _clickDispatch.processClick(_lastSelected
059: .getWidget());
060: }
061: }
062: super .onBrowserEvent(event);
063: }
064:
065: public void onTreeItemSelected(TreeItem item) {
066: String swid = DOM.getAttribute(item.getElement(), "swid");
067: _lastSelected = item;
068: }
069:
070: public void onTreeItemStateChanged(TreeItem item) {
071: //do nothing
072: }
073: };
074:
075: public Tree() {
076: _tree = new InnerTree();
077: setWidget(0, 0, _tree);
078: getFlexCellFormatter().setHorizontalAlignment(0, 0,
079: HasHorizontalAlignment.ALIGN_LEFT);
080: getFlexCellFormatter().setVerticalAlignment(0, 0,
081: HasVerticalAlignment.ALIGN_TOP);
082: }
083:
084: public void addNode(ITreeNode treeNode) {
085: _tree.addItem(treeNode.getItem());
086: _info.addTreeNode(treeNode);
087: }
088:
089: public String getId() {
090: throw new UnsupportedOperationException(
091: "getId() is unsupported for the tree");
092: }
093:
094: public TreeItem getItem() {
095: throw new UnsupportedOperationException(
096: "getItem() is unsupported for the tree");
097: }
098:
099: public ITreeNode getNode(String id) {
100: return _info.getTreeNodeWithId(id);
101: }
102:
103: public void removeTreeNode(ITreeNode node) {
104: _tree.removeItem(node.getItem());
105: _info.removeTreeNode(node);
106: }
107:
108: public void clear() {
109: _tree.clear();
110: }
111:
112: public void addTreeListener(TreeListener listener) {
113: _tree.addTreeListener(listener);
114: }
115:
116: public void addClickListener(ClickListener listener) {
117: _clickDispatch.addClickListener(listener);
118: }
119:
120: public void removeClickListener(ClickListener listener) {
121: _clickDispatch.removeClickListener(listener);
122: }
123:
124: public void addDoubleClickListener(DoubleClickListener listener) {
125: _clickDispatch.addDoubleClickListener(listener);
126: }
127:
128: public void removeDoubleClickListener(DoubleClickListener listener) {
129: _clickDispatch.removeDoubleClickListener(listener);
130: }
131:
132: /**
133: * Return the appendSelection
134: * @return the appendSelection.
135: */
136: public final boolean isAppendSelection() {
137: return _appendSelection;
138: }
139:
140: /**
141: * Return the isDoubleClick
142: * @return the isDoubleClick.
143: */
144: public final boolean isDoubleClick() {
145: return _isDoubleClick;
146: }
147: }
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