/*******************************************************************************
* Copyright (c) 2000, 2017 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
*
*******************************************************************************/
package org.eclipse.dltk.internal.ui.workingsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.dltk.ui.actions.SelectionDispatchAction;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.IWorkingSet;
public class RemoveWorkingSetElementAction extends SelectionDispatchAction {
public RemoveWorkingSetElementAction(IWorkbenchSite site) {
super(site);
setText(WorkingSetMessages.RemoveWorkingSetElementAction_label);
}
@Override
public void selectionChanged(IStructuredSelection selection) {
IWorkingSet workingSet = getWorkingSet(selection);
setEnabled(workingSet != null
&& !WorkingSetIDs.OTHERS.equals(workingSet.getId()));
}
private IWorkingSet getWorkingSet(IStructuredSelection selection) {
if (!(selection instanceof ITreeSelection))
return null;
ITreeSelection treeSelection = (ITreeSelection) selection;
List elements = treeSelection.toList();
IWorkingSet result = null;
for (Iterator iter = elements.iterator(); iter.hasNext();) {
Object element = iter.next();
TreePath[] paths = treeSelection.getPathsFor(element);
if (paths.length != 1)
return null;
TreePath path = paths[0];
if (path.getSegmentCount() != 2)
return null;
Object candidate = path.getSegment(0);
if (!(candidate instanceof IWorkingSet))
return null;
if (result == null) {
result = (IWorkingSet) candidate;
} else {
if (result != candidate)
return null;
}
}
return result;
}
@Override
public void run(IStructuredSelection selection) {
IWorkingSet ws = getWorkingSet(selection);
if (ws == null)
return;
List<IAdaptable> elements = new ArrayList<>(
Arrays.asList(ws.getElements()));
List selectedElements = selection.toList();
for (Iterator iter = selectedElements.iterator(); iter.hasNext();) {
elements.remove(iter.next());
}
ws.setElements(elements.toArray(new IAdaptable[elements.size()]));
}
}