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/*******************************************************************************
* Copyright (c) 2001, 2004 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
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.sse.ui.internal.actions;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IActionDelegate;
public class ResourceActionDelegate implements IActionDelegate {
protected IStructuredSelection fSelection;
protected Job getJob() {
// ResourceActionDelegate does not create background job
// subclass creates the background job for the action
return null;
}
protected boolean processorAvailable(IResource resource) {
// ResourceActionDelegate returns false by default
// subclass returns true if processor is available; false otherwise
return false;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
public void run(IAction action) {
if (fSelection != null && !fSelection.isEmpty()) {
Job job = getJob();
if (job != null)
job.schedule();
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction,
* org.eclipse.jface.viewers.ISelection)
*/
public void selectionChanged(IAction action, ISelection selection) {
if (selection instanceof IStructuredSelection) {
fSelection = (IStructuredSelection) selection;
boolean available = false;
Object[] elements = fSelection.toArray();
for (int i = 0; i < elements.length; i++) {
if (elements[i] instanceof IResource) {
available = processorAvailable((IResource) elements[i]);
if (available)
break;
}
}
action.setEnabled(available);
}
}
}
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