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comparison snippets/busyindicator/Snippet130a.d @ 117:8cdaac0dc743

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Added more snippets from TomD
author Frank Benoit <benoit@tionex.de>
date Sat, 12 Jul 2008 20:09:06 +0200
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116:f53c6274734f 117:8cdaac0dc743
1 /*******************************************************************************
2 * Copyright (c) 2000, 2004 IBM Corporation 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 * IBM Corporation - initial API and implementation
10 * D Port:
11 * Thomas Demmer <t_demmer AT web DOT de>
12 *******************************************************************************/
13 module busyindicator.Snippet130;
14 /*
15 * BusyIndicator example snippet: display busy cursor during long running task
16 *
17 * For a list of all SWT example snippets see
18 * http://www.eclipse.org/swt/snippets/
19 */
20 import dwt.DWT;
21 import dwt.events.SelectionAdapter;
22 import dwt.events.SelectionEvent;
23 import dwt.layout.GridLayout;
24 import dwt.layout.GridData;
25 import dwt.widgets.Shell;
26 import dwt.widgets.Button;
27 import dwt.widgets.Display;
28 import dwt.widgets.Shell;
29 import dwt.widgets.Text;
30
31
32 import dwt.custom.BusyIndicator;
33
34 import dwt.dwthelper.utils;
35 import dwt.dwthelper.Runnable;
36 import dwt.dwthelper.System;
37
38 import tango.core.Thread;
39 import tango.io.Stdout;
40 import tango.util.Convert;
41 import tango.util.log.Trace;
42
43
44 void main(String[] args){
45 Snippet130.main(args);
46 }
47
48 public class Snippet130 {
49
50 public static void main(String[] args) {
51 Display display = new Display();
52 Shell shell = new Shell(display);
53 shell.setLayout(new GridLayout());
54 Text text = new Text(shell, DWT.MULTI | DWT.BORDER | DWT.V_SCROLL);
55 text.setLayoutData(new GridData(GridData.FILL_BOTH));
56 int[] nextId = new int[1];
57 Button b = new Button(shell, DWT.PUSH);
58 b.setText("invoke long running job");
59
60 b.addSelectionListener(new class() SelectionAdapter {
61 public void widgetSelected(SelectionEvent e) {
62 Runnable longJob = new class() Runnable {
63 bool done = false;
64 int id;
65 public void run() {
66 Thread thread = new Thread({
67 id = nextId[0]++;
68 display.syncExec( dgRunnable( &printStart, text, id ));
69 for (int i = 0; i < 6; i++) {
70 if (display.isDisposed()) return;
71 Trace.formatln("do task that takes a long time in a separate thread {} {}/6", id, i);
72 Thread.sleep(0.500);
73 }
74 /*
75 for (int i = 0; i < 100000; i++) {
76 if (display.isDisposed()) return;
77 Stdout.formatln("do task that takes a long time in a separate thread {}", id);
78 }
79 */
80 if (display.isDisposed()) return;
81 display.syncExec( dgRunnable( &printEnd, text, id ));
82 done = true;
83 display.wake();
84 }); // thread = ...
85 thread.start();
86
87 while (!done && !shell.isDisposed()) {
88 if (!display.readAndDispatch())
89 display.sleep();
90 }
91 }
92 }; // Runnable longJob = ...
93 BusyIndicator.showWhile(display, longJob);
94 } // widgetSelected();
95 }); // addSelectionListener
96
97
98 shell.setSize(250, 150);
99 shell.open();
100 while (!shell.isDisposed()) {
101 if (!display.readAndDispatch())
102 display.sleep();
103 }
104 display.dispose();
105 }
106 private void printStart(Text text, int id ) {
107 if (text.isDisposed()) return;
108 Trace.formatln( "Start long running task {}", id );
109 text.append("\nStart long running task "~to!(char[])(id));
110 }
111 private void printEnd(Text text, int id ) {
112 if (text.isDisposed()) return;
113 Trace.formatln( "Completed long running task {}", id );
114 text.append("\nCompleted long running task "~to!(char[])(id));
115 }
116 }