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Added JFace Snippets sources
author Frank Benoit <benoit@tionex.de>
date Mon, 23 Mar 2009 11:16:06 +0100
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30:93b0e7382fd5 31:5d87d4191adf
1 /*******************************************************************************
2 * Copyright (c) 2006 Tom Schindl and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * Tom Schindl - initial API and implementation
10 *******************************************************************************/
11
12 module dwtx.jface.snippets.window.Snippet023TreeViewerCustomTooltips;
13
14 import dwtx.jface.viewers.CellLabelProvider;
15 import dwtx.jface.viewers.ITreeContentProvider;
16 import dwtx.jface.viewers.LabelProvider;
17 import dwtx.jface.viewers.TreeViewer;
18 import dwtx.jface.viewers.Viewer;
19 import dwt.DWT;
20 import dwt.graphics.Point;
21 import dwt.graphics.Rectangle;
22 import dwt.layout.FillLayout;
23 import dwt.widgets.Display;
24 import dwt.widgets.Event;
25 import dwt.widgets.Label;
26 import dwt.widgets.Listener;
27 import dwt.widgets.Shell;
28 import dwt.widgets.TreeItem;
29
30 import dwtx.dwtxhelper.Collection;
31 import dwt.dwthelper.utils;
32 import tango.text.convert.Format;
33 import tango.util.log.Trace;
34
35 /**
36 * A simple TreeViewer to demonstrate how custom tooltips could be created
37 * easily. This is an extended version from
38 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/dwt.snippets/src/org/eclipse/swt/snippets/Snippet125.java
39 *
40 * This code is for users pre 3.3 others could use newly added tooltip support in
41 * {@link CellLabelProvider}
42 *
43 * @author Tom Schindl <tom.schindl@bestsolution.at>
44 *
45 */
46 public class Snippet023TreeViewerCustomTooltips {
47 private class MyContentProvider : ITreeContentProvider {
48
49 /*
50 * (non-Javadoc)
51 *
52 * @see dwtx.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
53 */
54 public Object[] getElements(Object inputElement) {
55 return (cast(MyModel) inputElement).child.toArray();
56 }
57
58 /*
59 * (non-Javadoc)
60 *
61 * @see dwtx.jface.viewers.IContentProvider#dispose()
62 */
63 public void dispose() {
64
65 }
66
67 /*
68 * (non-Javadoc)
69 *
70 * @see dwtx.jface.viewers.IContentProvider#inputChanged(dwtx.jface.viewers.Viewer,
71 * java.lang.Object, java.lang.Object)
72 */
73 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
74
75 }
76
77 /*
78 * (non-Javadoc)
79 *
80 * @see dwtx.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
81 */
82 public Object[] getChildren(Object parentElement) {
83 return getElements(parentElement);
84 }
85
86 /*
87 * (non-Javadoc)
88 *
89 * @see dwtx.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
90 */
91 public Object getParent(Object element) {
92 if (element is null) {
93 return null;
94 }
95
96 return (cast(MyModel) element).parent;
97 }
98
99 /*
100 * (non-Javadoc)
101 *
102 * @see dwtx.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
103 */
104 public bool hasChildren(Object element) {
105 return (cast(MyModel) element).child.size() > 0;
106 }
107
108 }
109
110 public class MyModel {
111 public MyModel parent;
112
113 public ArrayList child;
114
115 public int counter;
116
117 public this(int counter, MyModel parent) {
118 this.parent = parent;
119 this.counter = counter;
120 child = new ArrayList();
121 }
122
123 public String toString() {
124 return Format( "Item {}{}", (parent !is null) ? "." : "", counter );
125 }
126 }
127
128 TreeViewer v;
129 Listener labelListener;
130
131 public this(Shell shell) {
132 v = new TreeViewer(shell);
133 v.setLabelProvider(new LabelProvider());
134 v.setContentProvider(new MyContentProvider());
135 v.setInput(createModel());
136 v.getTree().setToolTipText("");
137
138 labelListener = dgListener ( (Event event){
139 Label label = cast(Label)event.widget;
140 Shell shell_ = label.getShell ();
141 switch (event.type) {
142 case DWT.MouseDown:
143 Event e = new Event ();
144 e.item = cast(TreeItem) label.getData ("_TABLEITEM");
145 // Assuming table is single select, set the selection as if
146 // the mouse down event went through to the table
147 v.getTree().setSelection ([cast(TreeItem) e.item]);
148 v.getTree().notifyListeners (DWT.Selection, e);
149 shell_.dispose ();
150 v.getTree().setFocus();
151 break;
152 case DWT.MouseExit:
153 shell_.dispose ();
154 break;
155 default:
156 }
157 });
158
159 Listener treeListener = new MyTreeListener();
160 v.getTree().addListener (DWT.Dispose, treeListener);
161 v.getTree().addListener (DWT.KeyDown, treeListener);
162 v.getTree().addListener (DWT.MouseMove, treeListener);
163 v.getTree().addListener (DWT.MouseHover, treeListener);
164 }
165
166 class MyTreeListener : Listener {
167 Shell tip = null;
168 Label label = null;
169 public void handleEvent (Event event) {
170 switch (event.type) {
171 case DWT.Dispose:
172 case DWT.KeyDown:
173 case DWT.MouseMove: {
174 if (tip is null) break;
175 tip.dispose ();
176 tip = null;
177 label = null;
178 break;
179 }
180 case DWT.MouseHover: {
181 Point coords = new Point(event.x, event.y);
182 TreeItem item = v.getTree().getItem(coords);
183 if (item !is null) {
184 int columns = v.getTree().getColumnCount();
185
186 for (int i = 0; i < columns || i is 0; i++) {
187 if (item.getBounds(i).contains(coords)) {
188 if (tip !is null && !tip.isDisposed ()) tip.dispose ();
189 tip = new Shell (v.getTree().getShell(), DWT.ON_TOP | DWT.NO_FOCUS | DWT.TOOL);
190 tip.setBackground (v.getTree().getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND));
191 FillLayout layout = new FillLayout ();
192 layout.marginWidth = 2;
193 tip.setLayout (layout);
194 label = new Label (tip, DWT.NONE);
195 label.setForeground (v.getTree().getDisplay().getSystemColor (DWT.COLOR_INFO_FOREGROUND));
196 label.setBackground (v.getTree().getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND));
197 label.setData ("_TABLEITEM", item);
198 label.setText (Format("Tooltip: {} => {}", item.getData(), i));
199 label.addListener (DWT.MouseExit, labelListener);
200 label.addListener (DWT.MouseDown, labelListener);
201 Point size = tip.computeSize (DWT.DEFAULT, DWT.DEFAULT);
202 Rectangle rect = item.getBounds (i);
203 Point pt = v.getTree().toDisplay (rect.x, rect.y);
204 tip.setBounds (pt.x, pt.y, size.x, size.y);
205 tip.setVisible (true);
206 break;
207 }
208 }
209 }
210 }
211 default:
212 }
213 }
214 };
215
216 private MyModel createModel() {
217
218 MyModel root = new MyModel(0, null);
219 root.counter = 0;
220
221 MyModel tmp;
222 for (int i = 1; i < 10; i++) {
223 tmp = new MyModel(i, root);
224 root.child.add(tmp);
225 for (int j = 1; j < i; j++) {
226 tmp.child.add(new MyModel(j, tmp));
227 }
228 }
229
230 return root;
231 }
232
233 public static void main(String[] args) {
234 Display display = new Display();
235 Shell shell = new Shell(display);
236 shell.setLayout(new FillLayout());
237 new Snippet023TreeViewerCustomTooltips(shell);
238 shell.open();
239
240 while (!shell.isDisposed()) {
241 if (!display.readAndDispatch())
242 display.sleep();
243 }
244
245 display.dispose();
246 }
247 }
248
249 void main(){
250 Snippet023TreeViewerCustomTooltips.main(null);
251 }
252
253