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/*******************************************************************************
* Copyright (c) 2004, 2012 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Patrick Chuong (Texas Instruments) - Improve usability of the breakpoint view (Bug 238956)
*******************************************************************************/
package org.eclipse.debug.internal.ui.actions.breakpoints;
import org.eclipse.debug.internal.ui.viewers.model.IInternalTreeModelViewer;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelChangedListener;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelProxy;
import org.eclipse.debug.internal.ui.viewers.model.provisional.ITreeModelViewer;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdateListener;
import org.eclipse.debug.ui.AbstractDebugView;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.widgets.Event;
import org.eclipse.ui.IActionDelegate2;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.handlers.CollapseAllHandler;
/**
*
*/
public class BreakpointsCollapseAllAction implements IViewActionDelegate, IActionDelegate2, IViewerUpdateListener, IModelChangedListener {
private AbstractDebugView fView;
private IAction fAction;
@Override
public void init(IViewPart view) {
fView = (AbstractDebugView) view;
IInternalTreeModelViewer viewer = (IInternalTreeModelViewer)fView.getViewer();
if (viewer != null) {
viewer.addViewerUpdateListener(this);
viewer.addModelChangedListener(this);
}
}
@Override
public void run(IAction action) {
((TreeViewer) fView.getViewer()).collapseAll();
}
@Override
public void selectionChanged(IAction action, ISelection selection) {
}
@Override
public void dispose() {
ITreeModelViewer viewer = (ITreeModelViewer)fView.getViewer();
if (viewer != null) {
viewer.removeViewerUpdateListener(this);
viewer.removeModelChangedListener(this);
}
}
@Override
public void init(IAction action) {
fAction = action;
action.setActionDefinitionId(CollapseAllHandler.COMMAND_ID);
}
@Override
public void runWithEvent(IAction action, Event event) {
run(action);
}
@Override
public void viewerUpdatesBegin() {
}
@Override
public void viewerUpdatesComplete() {
}
@Override
public void updateStarted(IViewerUpdate update) {
}
@Override
public void updateComplete(IViewerUpdate update) {
if (!update.isCanceled()) {
if (TreePath.EMPTY.equals(update.getElementPath())) {
update();
}
}
}
private void update() {
IInternalTreeModelViewer viewer = (IInternalTreeModelViewer)fView.getViewer();
if (viewer != null && fAction != null) {
fAction.setEnabled(viewer.getInput() != null && viewer.getChildCount(TreePath.EMPTY) > 0);
}
}
@Override
public void modelChanged(IModelDelta delta, IModelProxy proxy) {
update();
}
}
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