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/*******************************************************************************
* Copyright (c) 2009, 2013 Wind River Systems 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:
* Wind River Systems - initial API and implementation
* IBM Corporation = bug fixing
*******************************************************************************/
package org.eclipse.debug.internal.ui.views.launch;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.debug.internal.ui.viewers.model.VirtualCopyToClipboardActionDelegate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.TreeModelViewer;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.swt.widgets.Widget;
/**
* Copy action for debug view. This action is specialized from the standard
* copy action in a couple of ways:
* <ul>
* <li>If debug view is in debug mode, then the selected element in
* breadcrumb is translated into the tree viewer, and then copied</li>
* <li> If an item is selected all the item's children are copied into
* clipbard.</li>
* </ul>
*
* @since 3.5
*/
public class LaunchViewCopyToClipboardActionDelegate extends VirtualCopyToClipboardActionDelegate {
@Override
protected TreeItem[] getSelectedItems(TreeModelViewer clientViewer) {
LaunchView view = (LaunchView)getView();
if (view.isBreadcrumbVisible()) {
ISelection selection = getSelection();
if (selection instanceof ITreeSelection && getViewer() != null) {
TreePath path = TreePath.EMPTY;
if (!selection.isEmpty()) {
path = ((ITreeSelection)selection).getPaths()[0];
}
return getSelectedItemsInTreeViewer(getViewer(), path);
}
return new TreeItem[0];
} else {
// Return tree selection plus children.
TreeItem[] selection = clientViewer.getTree().getSelection();
Set<Widget> set = new HashSet<>();
collectChildItems(set, selection);
return set.toArray(new TreeItem[set.size()]);
}
}
/**
* Calculates selected items in viewer for given tree path.
* @param viewer Viewer to get items from.
* @param path Path for desired selection.
* @return Selected items. If no selected items found, returns an empty
* array.
*/
private TreeItem[] getSelectedItemsInTreeViewer(TreeModelViewer viewer, TreePath path) {
Widget item = viewer.findItem(path);
Set<Widget> set = new HashSet<>();
if (item instanceof TreeItem) {
set.add(item);
if (((TreeItem) item).getExpanded()) {
collectChildItems(set, ((TreeItem) item).getItems());
}
} else if (item instanceof Tree) {
collectChildItems(set, ((Tree)item).getItems());
}
return set.toArray(new TreeItem[set.size()]);
}
private void collectChildItems(Set<Widget> set, TreeItem[] items) {
if (items == null) {
return;
}
for (int i = 0; i < items.length; i++) {
set.add(items[i]);
if (items[i].getExpanded()) {
collectChildItems(set, items[i].getItems());
}
}
}
}
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