/*******************************************************************************
* Copyright (c) 2005, 2012 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
* Anton Leherbauer (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.text.contentassist;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.cdt.internal.ui.editor.SpecificContentAssistExecutor;
/**
* A command handler to invoke a content assist for a specific proposal category.
*
* @since 4.0
*/
public final class ContentAssistHandler extends AbstractHandler {
private final SpecificContentAssistExecutor fExecutor= new SpecificContentAssistExecutor(CompletionProposalComputerRegistry.getDefault());
public ContentAssistHandler() {
}
/*
* @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
*/
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
ITextEditor editor= getActiveEditor();
if (editor == null)
return null;
String categoryId= event.getParameter("org.eclipse.cdt.ui.specific_content_assist.category_id"); //$NON-NLS-1$
if (categoryId == null)
return null;
fExecutor.invokeContentAssist(editor, categoryId);
return null;
}
private ITextEditor getActiveEditor() {
IWorkbenchWindow window= PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (window != null) {
IWorkbenchPage page= window.getActivePage();
if (page != null) {
IEditorPart editor= page.getActiveEditor();
if (editor instanceof ITextEditor)
return (ITextEditor) editor;
}
}
return null;
}
}