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/*******************************************************************************
* Copyright (c) 2010 Wind River 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.dsf.gdb.internal.ui.tracepoints;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import org.eclipse.cdt.dsf.gdb.internal.ui.GdbUIPlugin;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Plugin;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.graphics.Image;
import org.osgi.framework.Bundle;
/**
* Abstract image registry that allows for defining fallback paths for images.
* This is copy of <code>org.eclipse.cdt.dsf.debug.internal.ui.disassembly.AbstractImageRegistry</code>
*
* @since 2.1
*/
public abstract class AbstractImageRegistry extends ImageRegistry {
private HashMap<String, String> fPlugins = new HashMap<String, String>();
private HashMap<String, String[]> fLocations = new HashMap<String, String[]>();
private URL fBaseUrl;
protected AbstractImageRegistry(Plugin plugin) {
fBaseUrl = plugin.getBundle().getEntry("/"); //$NON-NLS-1$
}
/**
* Defines the key for a local image, that must be found below the icons directory
* in the plugin.
* @param key Key by which the image can be referred by.
* @param dir Directory relative to icons/
* @param name The name of the file defining the icon. The name will be used as
* key.
*/
protected void localImage(String key, String dir, String name) {
if (dir== null || dir.equals(""))//$NON-NLS-1$
fLocations.put(key, new String[] {"icons/" + name}); //$NON-NLS-1$
else
fLocations.put(key, new String[] {"icons/" + dir + "/" + name}); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* Defines the key for a non-local image, that must be found below the icons directory
* of some plugin.
* @param key Key by which the image can be referred by.
* @param plugin The plugin id, where the icon is searched.
* @param dirs A couple of directories below icons/ in the plugin. If loading fails,
* the next dir will be taken as fallback.
* @param name The name of the file defining the icon. The name will be used as
* key.
*/
protected void externalImage(String key, String plugin, String[] dirs, String name) {
if (plugin != null) {
fPlugins.put(key, plugin);
}
String[] locations = new String[dirs.length];
for (int i = 0; i < dirs.length; i++) {
String dir = dirs[i];
if (dir== null || dir.equals(""))//$NON-NLS-1$
locations[i] = "icons/" + name; //$NON-NLS-1$
else
locations[i] = "icons/" + dir + "/" + name; //$NON-NLS-1$ //$NON-NLS-2$
}
fLocations.put(key, locations);
}
// overrider
@Override
final public Image get(String key) {
Image i = super.get(key);
if (i != null) {
return i;
}
ImageDescriptor d = createFileImageDescriptor(key);
if (d != null) {
put(key, d);
return super.get(key);
}
return null;
}
// overrider
@Override
final public ImageDescriptor getDescriptor(String key) {
ImageDescriptor d = super.getDescriptor(key);
if (d != null) {
return d;
}
d = createFileImageDescriptor(key);
if (d != null) {
put(key, d);
return d;
}
return null;
}
private ImageDescriptor createFileImageDescriptor(String key) {
URL url = fBaseUrl;
String pluginId = fPlugins.get(key);
if (pluginId != null) {
Bundle bundle= Platform.getBundle(pluginId);
if (bundle != null) {
url = bundle.getEntry("/"); //$NON-NLS-1$
}
}
String[] locations= fLocations.get(key);
if (locations != null) {
for (int i = 0; i < locations.length; i++) {
String loc = locations[i];
URL full;
try {
full = new URL(url, loc);
ImageDescriptor candidate = ImageDescriptor.createFromURL(full);
if (candidate != null && candidate.getImageData() != null) {
return candidate;
}
} catch (MalformedURLException e) {
GdbUIPlugin.getDefault().getLog().log(new Status(IStatus.ERROR, GdbUIPlugin.PLUGIN_ID, "Malformed Icon URL", e)); //$NON-NLS-1$
} catch (SWTException e) {
// try the next one.
}
}
}
return null;
}
}
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