/*******************************************************************************
* Copyright (c) 2005, 2006 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.cheatsheets.composite.views;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.net.URL;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.osgi.util.NLS;
import org.eclipse.ui.internal.cheatsheets.CheatSheetPlugin;
import org.eclipse.ui.internal.cheatsheets.ICheatSheetResource;
import org.eclipse.ui.internal.cheatsheets.Messages;
import org.eclipse.ui.internal.cheatsheets.registry.CheatSheetRegistryReader;
import org.eclipse.ui.internal.provisional.cheatsheets.TaskEditor;
import org.osgi.framework.Bundle;
public class TaskEditorManager {
private static TaskEditorManager instance;
private TaskEditorManager() {
}
public static TaskEditorManager getInstance() {
if (instance == null) {
instance = new TaskEditorManager();
}
return instance;
}
public TaskEditor getEditor(String editorKind) {
CheatSheetRegistryReader.TaskEditorNode editorInfo =
CheatSheetRegistryReader.getInstance().findTaskEditor(editorKind);
if (editorInfo != null) {
TaskEditor editorInstance = null;
Class extClass = null;
String className = editorInfo.getClassName();
try {
Bundle bundle = Platform.getBundle(editorInfo.getPluginId());
extClass = bundle.loadClass(className);
} catch (Exception e) {
String message = NLS.bind(Messages.ERROR_LOADING_CLASS, (new Object[] {className}));
Status status = new Status(IStatus.ERROR, ICheatSheetResource.CHEAT_SHEET_PLUGIN_ID, IStatus.OK, message, e);
CheatSheetPlugin.getPlugin().getLog().log(status);
}
try {
if (extClass != null) {
Constructor c = extClass.getConstructor(new Class[0]);
Object[] parameters = new Object[0];
editorInstance = (TaskEditor) c.newInstance(parameters);
}
} catch (Exception e) {
String message = NLS.bind(Messages.ERROR_CREATING_CLASS, (new Object[] {className}));
IStatus status = new Status(IStatus.ERROR, ICheatSheetResource.CHEAT_SHEET_PLUGIN_ID, IStatus.OK, message, e);
CheatSheetPlugin.getPlugin().getLog().log(status);
}
return editorInstance;
}
return null;
}
public ImageDescriptor getImageDescriptor(String editorKind) {
CheatSheetRegistryReader.TaskEditorNode editorInfo =
CheatSheetRegistryReader.getInstance().findTaskEditor(editorKind);
if (editorInfo != null) {
Bundle bundle = Platform.getBundle(editorInfo.getPluginId());
URL url = FileLocator.find(bundle, new Path(editorInfo.getIconPath()), null);
if (url != null) {
try {
url = FileLocator.resolve(url);
return ImageDescriptor.createFromURL(url);
} catch (IOException e) {
return null;
}
}
}
return null;
}
}