blob: 61f5c5d601d195dbd54528553e7ec7feab942f75 (
plain) (
blame)
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
|
/*******************************************************************************
* Copyright (c) 2004, 2007 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.debug.internal.ui;
import java.util.HashMap;
import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
/**
* A registry that maps <code>ImageDescriptors</code> to <code>Image</code>.
*/
public class CDebugImageDescriptorRegistry {
private HashMap<ImageDescriptor, Image> fRegistry = new HashMap<ImageDescriptor, Image>(10);
private Display fDisplay;
/**
* Creates a new image descriptor registry for the current or default display, respectively.
*/
public CDebugImageDescriptorRegistry() {
this(CDebugUIPlugin.getStandardDisplay());
}
/**
* Creates a new image descriptor registry for the given display. All images managed by this registry will be disposed when the display gets disposed.
*
* @param diaplay
* the display the images managed by this registry are allocated for
*/
public CDebugImageDescriptorRegistry(Display display) {
fDisplay = display;
Assert.isNotNull(fDisplay);
hookDisplay();
}
/**
* Returns the image associated with the given image descriptor.
*
* @param descriptor
* the image descriptor for which the registry manages an image
* @return the image associated with the image descriptor or <code>null</code> if the image
* descriptor can't create the requested image.
*/
public Image get(ImageDescriptor descriptor) {
if (descriptor == null)
descriptor = ImageDescriptor.getMissingImageDescriptor();
Image result = fRegistry.get(descriptor);
if (result != null)
return result;
Assert.isTrue(fDisplay == CDebugUIPlugin.getStandardDisplay(), CDebugUIMessages.getString("CDebugImageDescriptorRegistry.0")); //$NON-NLS-1$
result = descriptor.createImage();
if (result != null)
fRegistry.put(descriptor, result);
return result;
}
/**
* Disposes all images managed by this registry.
*/
public void dispose() {
for (Image image : fRegistry.values()) {
image.dispose();
}
fRegistry.clear();
}
private void hookDisplay() {
fDisplay.asyncExec(new Runnable() {
public void run() {
getDisplay().disposeExec(new Runnable() {
public void run() {
dispose();
}
});
}
});
}
protected Display getDisplay() {
return fDisplay;
}
}
|
