org.eclipse.swt.snippets.Snippet122 source code

1 #!/usr/bin/env dub
2 /+
3 dub.sdl:
4     name "snippet122"
5     dependency "dwt" path="../../../../../../"
6     libs \
7       "atk-1.0" \
8       "cairo" \
9       "dl" \
10       "fontconfig" \
11       "gdk-x11-2.0" \
12       "gdk_pixbuf-2.0" \
13       "glib-2.0" \
14       "gmodule-2.0" \
15       "gnomeui-2" \
16       "gnomevfs-2" \
17       "gobject-2.0" \
18       "gthread-2.0" \
19       "gtk-x11-2.0" \
20       "pango-1.0" \
21       "pangocairo-1.0" \
22       "X11" \
23       "Xcomposite" \
24       "Xcursor" \
25       "Xdamage" \
26       "Xext" \
27       "Xfixes" \
28       "Xi" \
29       "Xinerama" \
30       "Xrandr" \
31       "Xrender" \
32       "Xtst" \
33       platform="linux"
34 +/
35 
36 /*******************************************************************************
37  * Copyright (c) 2000, 2004 IBM Corporation and others.
38  * All rights reserved. This program and the accompanying materials
39  * are made available under the terms of the Eclipse Public License v1.0
40  * which accompanies this distribution, and is available at
41  * http://www.eclipse.org/legal/epl-v10.html
42  *
43  * Contributors:
44  *     IBM Corporation - initial API and implementation
45  * D Port:
46  *     Thomas Demmer <t_demmer AT web DOT de>
47  *******************************************************************************/
48 module org.eclipse.swt.snippets.Snippet122;
49 /*
50  * Clipboard example snippet: enable/disable menu depending on clipboard content availability
51  *
52  * For a list of all SWT example snippets see
53  * http://www.eclipse.org/swt/snippets/
54  *
55  * @since 3.0
56  */
57 import org.eclipse.swt.SWT;
58 import org.eclipse.swt.dnd.Clipboard;
59 import org.eclipse.swt.dnd.TextTransfer;
60 import org.eclipse.swt.dnd.Transfer;
61 import org.eclipse.swt.dnd.TransferData;
62 import org.eclipse.swt.events.MenuAdapter;
63 import org.eclipse.swt.events.MenuEvent;
64 import org.eclipse.swt.events.SelectionAdapter;
65 import org.eclipse.swt.events.SelectionListener;
66 import org.eclipse.swt.layout.FillLayout;
67 import org.eclipse.swt.widgets.Display;
68 import org.eclipse.swt.widgets.Menu;
69 import org.eclipse.swt.widgets.MenuItem;
70 import org.eclipse.swt.widgets.Shell;
71 import org.eclipse.swt.widgets.Text;
72 
73 import java.lang.all;
74 
75 void main() {
76     Display display = new Display();
77     Clipboard cb = new Clipboard(display);
78     Shell shell = new Shell(display);
79     shell.setLayout(new FillLayout());
80     Text text = new Text(shell, SWT.BORDER | SWT.MULTI | SWT.WRAP);
81     Menu menu = new Menu(shell, SWT.POP_UP);
82     MenuItem copyItem = new MenuItem(menu, SWT.PUSH);
83     copyItem.setText("Copy");
84     copyItem.addSelectionListener(new class SelectionAdapter{
85         override
86         public void widgetSelected(SelectionEvent e) {
87             String selection = text.getSelectionText();
88             if (selection.length == 0) return;
89             Object[] data = [ new ArrayWrapperString(selection) ];
90             Transfer[] types = [ TextTransfer.getInstance() ];
91             cb.setContents(data, types);
92         }
93     });
94     MenuItem pasteItem = new MenuItem(menu, SWT.PUSH);
95     pasteItem.setText ("Paste");
96     pasteItem.addSelectionListener(new class SelectionAdapter{
97         override
98         public void widgetSelected(SelectionEvent e) {
99             String string = stringcast(cb.getContents(TextTransfer.getInstance()));
100             if (string !is null) text.insert(string);
101         }
102     });
103     menu.addMenuListener(new class MenuAdapter{
104         override
105         public void menuShown(MenuEvent e) {
106             // is copy valid?
107             String selection = text.getSelectionText();
108             copyItem.setEnabled(selection.length > 0);
109             // is paste valid?
110             TransferData[] available = cb.getAvailableTypes();
111             bool enabled = false;
112             for (int i = 0; i < available.length; i++) {
113                 if (TextTransfer.getInstance().isSupportedType(available[i])) {
114                     enabled = true;
115                     break;
116                 }
117             }
118             pasteItem.setEnabled(enabled);
119         }
120     });
121 
122     text.setMenu (menu);
123     shell.setSize(200, 200);
124     shell.open();
125     while (!shell.isDisposed()) {
126         if (!display.readAndDispatch())
127             display.sleep();
128     }
129     cb.dispose();
130     display.dispose();
131 }