-
Notifications
You must be signed in to change notification settings - Fork 3
/
listing1.html
executable file
·343 lines (296 loc) · 11.2 KB
/
listing1.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
<!-- END META TAG INFO -->
<!-- BEGIN TITLE -->
<title>BlockedEventQueue - /BlockedEventQueue.java</title>
<!-- END TITLE -->
<script language="JavaScript">
function JumpToNewPage() {
window.location=document.scpopupmenu.gotop.value;
return true;
}
</script>
</head>
<!-- BEGIN BODY OPEN -->
<body>
<!--END BODY OPEN -->
<!-- START CENTER OPEN -->
<center>
<!-- END CENTER OPEN -->
<!-- BEGIN LOGO AND SEARCH -->
<!--#include virtual="/includes/adcnavbar"-->
<!-- END LOGO AND SEARCH -->
<!-- START BREADCRUMB -->
<div id="breadcrumb">
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td scope="row"><img width="340" height="10" src="images/1dot.gif" alt=""></td>
<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
</tr>
<tr valign="middle">
<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Java/index.html">Java</a> > <a href="../../samplecode/Java/idxTools-date.html">Tools</a> > <A HREF="javascript:location.replace('index.html');">BlockedEventQueue</A> >
</td>
</tr>
<tr>
<td colspan="2" scope="row"><img width="680" height="35" src="images/1dot.gif" alt=""></td>
</tr>
</table>
</div>
<!-- END BREADCRUMB -->
<!-- START MAIN CONTENT -->
<!-- START TITLE GRAPHIC AND INTRO-->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td><h1><div id="pagehead">BlockedEventQueue</div></h1></td>
</tr>
</table>
<!-- END TITLE GRAPHIC AND INTRO -->
<!-- START WIDE COLUMN -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td id="scdetails">
<h2>/BlockedEventQueue.java</h2>
<form name="scpopupmenu" onSubmit="return false;" method=post>
<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/BlockedEventQueue.java</option></select>
</p>
</form>
<p><strong><a href="BlockedEventQueue.zip">Download Sample</a></strong> (“BlockedEventQueue.zip”, 60.6K)<BR>
<strong><a href="BlockedEventQueue.dmg">Download Sample</a></strong> (“BlockedEventQueue.dmg”, 120.5K)</p>
<!--
<p><strong><a href="#">Download Sample</a></strong> (“filename.sit”, 500K)</p>
-->
</td>
</tr>
<tr>
<td scope="row"><img width="680" height="10" src="images/1dot.gif" alt=""><br>
<img height="1" width="680" src="images/1dot_919699.gif" alt=""><br>
<img width="680" height="20" src="images/1dot.gif" alt=""></td>
</tr>
<tr>
<td scope="row">
<!--googleon: index -->
<pre class="sourcecodebox">/*
File: BlockedEventQueue.java
Abstract:
This is an example which INCORRECTLY handles actionEvents.
It is designed as a simple example of a java tool which
will lock up and show the spinning cursor, providing a case
where developers can use practice with our debugging tools
to identify and isolate a problem.
This example consists of two main parts:
1) a Panel which counts the number of times that it
is asked to paint itself
2) a Button which, when triggered, waits for the next
paint event on the Panel, and then changes its name.
Version: <1.0>
© Copyright 2005 Apple Computer, Inc. All rights reserved.
IMPORTANT: This Apple software is supplied to
you by Apple Computer, Inc. ("Apple") in
consideration of your agreement to the following
terms, and your use, installation, modification
or redistribution of this Apple software
constitutes acceptance of these terms. If you do
not agree with these terms, please do not use,
install, modify or redistribute this Apple
software.
In consideration of your agreement to abide by
the following terms, and subject to these terms,
Apple grants you a personal, non-exclusive
license, under Apple's copyrights in this
original Apple software (the "Apple Software"),
to use, reproduce, modify and redistribute the
Apple Software, with or without modifications, in
source and/or binary forms; provided that if you
redistribute the Apple Software in its entirety
and without modifications, you must retain this
notice and the following text and disclaimers in
all such redistributions of the Apple Software.
Neither the name, trademarks, service marks or
logos of Apple Computer, Inc. may be used to
endorse or promote products derived from the
Apple Software without specific prior written
permission from Apple. Except as expressly
stated in this notice, no other rights or
licenses, express or implied, are granted by
Apple herein, including but not limited to any
patent rights that may be infringed by your
derivative works or by other works in which the
Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS
IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING
THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE
OR IN COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF
THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
UNDER THEORY OF CONTRACT, TORT (INCLUDING
NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
import java.util.*;
import java.awt.*;
import java.awt.event.*;
public class BlockedEventQueue extends Frame {
// An object used for inter-thread communication
Object paintWatcher = new Object();
//
// A Panel that just "counts" each paint request
//
class PaintCounter extends Panel {
int paintcount = 0;
public void paint( Graphics g) {
super.paint(g);
paintcount++;
// Paint a "count" variable in the frame
FontMetrics fm = g.getFontMetrics();
int ascent = fm.getAscent();
g.drawString("Paint Count: "+paintcount, 10, ascent+10);
// handle inter-thread communication
synchronized( paintWatcher ) {
paintWatcher.notify();
}
}
public Dimension getMinimumSize() {
return new Dimension(100,200);
}
}
//
// A Button that just waits for the next paint to fire
// The button does not actually trigger a repaint;
// to do so, just resize the window manually
//
class WaitButton extends Button implements ActionListener {
public WaitButton() {
super( "Wait for paint" );
// setFont( new Font( "Lucida Grande", Font.PLAIN, 30 ));
addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
synchronized (paintWatcher) {
try {
paintWatcher.wait();
}
catch( InterruptedException ix ) {}
}
setLabel("Painted!");
}
// public void actionPerformed(ActionEvent e) {
// (new Thread() {
// public void run() {
// synchronized (paintWatcher) {
// try {
// paintWatcher.wait();
// }
// catch( InterruptedException ix ) {}
// }
// setLabel("Painted!");
// }
// }).start();
// }
/*
Above actionPerformed offloads the waiting to another thread, allowing
the event queue (and the repaint we are waiting on) to proceed
Use this fix to remedy the problem caused by the above actionPerformed method
*/
}
//
// A frame for the example, with one button and a panel;
//
public BlockedEventQueue() {
super("Test Frame");
setFont( new Font( "Lucida Grande", Font.PLAIN, 30 ));
Panel counter = new PaintCounter();
Button waiter = new WaitButton();
Panel panel = new Panel();
panel.setLayout( new GridLayout( 3 ,1) );
// Add the button
panel.add(waiter);
// Add a tiny "spacer" panel
panel.add(new Panel());
// Add the counter panel
panel.add(counter);
add(panel);
setSize(300,300);
setVisible(true);
}
public static void main(String args[]) {
new BlockedEventQueue();
}
}
//<<<<<<< BlockedEventQueue.java
// New actionPerformed offloads the waiting to another thread, allowing
// the event queue (and the repaint we are waiting on) to proceed
// Use this fix to remedy the problem caused by the above actionPerformed method
/*
public void actionPerformed(ActionEvent e) {
(new Thread() {
public void run() {
synchronized (paintWatcher) {
try {
paintWatcher.wait();
}
catch( InterruptedException ix ) {
}
}
setLabel("Painted!");
}
}).start();
}
=======
>>>>>>> 1.4*/
</pre>
<!--googleoff: index -->
</td>
</tr>
</table>
<!-- END WIDE COLUMN -->
<!-- END MAIN CONTENT -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td><div style="width: 100%; height: 1px; background-color: #919699; margin-top: 5px; margin-bottom: 15px"></div></td>
</tr>
<tr>
<td align="center"><br/>
<table border="0" cellpadding="0" cellspacing="0" class="graybox">
<tr>
<th>Did this document help you?</th>
</tr>
<tr>
<td>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=1&url=/samplecode/BlockedEventQueue/listing1.html%3Fid%3DDTS10003599-1.0&media=dvd" target=_new>Yes</a>: Tell us what works for you.</div>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=2&url=/samplecode/BlockedEventQueue/listing1.html%3Fid%3DDTS10003599-1.0&media=dvd" target=_new>It’s good, but:</a> Report typos, inaccuracies, and so forth.</div>
<div><a href="http://developer.apple.com/feedback/?v=3&url=/samplecode/BlockedEventQueue/listing1.html%3Fid%3DDTS10003599-1.0&media=dvd" target=_new>It wasn’t helpful</a>: Tell us what would have helped.</div>
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-- START BOTTOM APPLE NAVIGATION -->
<!--#include virtual="/includes/footer"-->
<!-- END BOTTOM APPLE NAVIGATION -->
<!-- START CENTER CLOSE -->
</center>
<!-- END CENTER CLOSE -->
</body>
</html>