/*******************************************************************************
* Copyright (c) 2006, 2007 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.quickaccess;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.core.commands.Command;
import org.eclipse.core.commands.ParameterizedCommand;
import org.eclipse.core.commands.common.NotDefinedException;
import org.eclipse.core.expressions.IEvaluationContext;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.commands.ICommandService;
import org.eclipse.ui.handlers.IHandlerService;
import org.eclipse.ui.internal.IWorkbenchGraphicConstants;
import org.eclipse.ui.internal.WorkbenchImages;
import org.eclipse.ui.internal.handlers.HandlerService;
/**
* @since 3.3
*
*/
public class CommandProvider extends QuickAccessProvider {
private Map idToElement;
private IEvaluationContext contextSnapshot;
private HandlerService realHandlerService;
public CommandProvider() {
// initialize eagerly
saveApplicationContext();
getElements();
}
public String getId() {
return "org.eclipse.ui.commands"; //$NON-NLS-1$
}
public QuickAccessElement getElementForId(String id) {
getElements();
return (CommandElement) idToElement.get(id);
}
public QuickAccessElement[] getElements() {
if (idToElement == null) {
idToElement = new HashMap();
ICommandService commandService = (ICommandService) PlatformUI
.getWorkbench().getService(ICommandService.class);
final Collection commandIds = commandService.getDefinedCommandIds();
final Iterator commandIdItr = commandIds.iterator();
while (commandIdItr.hasNext()) {
final String currentCommandId = (String) commandIdItr.next();
final Command command = commandService
.getCommand(currentCommandId);
if (command != null && command.isHandled()
&& command.isEnabled()) {
try {
Collection combinations = ParameterizedCommand
.generateCombinations(command);
for (Iterator it = combinations.iterator(); it
.hasNext();) {
ParameterizedCommand pc = (ParameterizedCommand) it.next();
String id = pc.serialize();
idToElement.put(id,
new CommandElement(pc, id, this));
}
} catch (final NotDefinedException e) {
// It is safe to just ignore undefined commands.
}
}
}
}
return (QuickAccessElement[]) idToElement.values().toArray(
new QuickAccessElement[idToElement.values().size()]);
}
public ImageDescriptor getImageDescriptor() {
return WorkbenchImages
.getImageDescriptor(IWorkbenchGraphicConstants.IMG_OBJ_NODE);
}
public String getName() {
return QuickAccessMessages.QuickAccess_Commands;
}
private void saveApplicationContext() {
realHandlerService = (HandlerService) PlatformUI.getWorkbench().getService(IHandlerService.class);
contextSnapshot = realHandlerService.getFullContextSnapshot();
}
HandlerService getRealHandlerService() {
return realHandlerService;
}
IEvaluationContext getContextSnapshot() {
return contextSnapshot;
}
}