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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.views.variables;
import java.util.ArrayList;
import java.util.Iterator;
import org.eclipse.debug.internal.ui.views.IRemoteTreeViewerUpdateListener;
import org.eclipse.debug.internal.ui.views.RemoteTreeViewer;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Item;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.Widget;
/**
* Variables viewer. As the user steps through code, this
* we ensure that newly added varibles are visible.
*/
public class VariablesViewer extends RemoteTreeViewer {
private ArrayList fUpdateListeners = new ArrayList();
/**
* Constructor for VariablesViewer.
* @param parent
*/
public VariablesViewer(Composite parent) {
super(parent);
}
/**
* Constructor for VariablesViewer.
* @param parent
* @param style
*/
public VariablesViewer(Composite parent, int style) {
super(parent, style);
}
/**
* Constructor for VariablesViewer.
* @param tree
*/
public VariablesViewer(Tree tree) {
super(tree);
}
/**
* @see AbstractTreeViewer#newItem(Widget, int, int)
*/
protected Item newItem(Widget parent, int style, int index) {
Item item = super.newItem(parent, style, index);
if (index != -1 && getSelection(getControl()).length == 0) {
//ignore the dummy items
showItem(item);
}
return item;
}
/**
* @see org.eclipse.jface.viewers.AbstractTreeViewer#setExpandedElements(Object[])
*/
public void setExpandedElements(Object[] elements) {
getControl().setRedraw(false);
super.setExpandedElements(elements);
getControl().setRedraw(true);
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.AbstractTreeViewer#collapseAll()
*/
public void collapseAll() {
//see https://bugs.eclipse.org/bugs/show_bug.cgi?id=39449
if (getRoot() != null) {
super.collapseAll();
}
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.views.RemoteTreeViewer#restoreExpansionState()
*/
protected synchronized void restoreExpansionState() {
cancelJobs();
for (Iterator i = fUpdateListeners.iterator(); i.hasNext();) {
IRemoteTreeViewerUpdateListener listener = (IRemoteTreeViewerUpdateListener) i.next();
listener.treeUpdated();
}
}
public void addUpdateListener(IRemoteTreeViewerUpdateListener listener) {
fUpdateListeners.add(listener);
}
public void removeUpdateListener(IRemoteTreeViewerUpdateListener listener) {
fUpdateListeners.remove(listener);
}
}
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