/*******************************************************************************
* Copyright (c) 2006, 2012 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
*******************************************************************************/
package org.eclipse.cdt.dsf.debug.ui.viewmodel.launch;
import org.eclipse.cdt.dsf.concurrent.RequestMonitor;
import org.eclipse.cdt.dsf.ui.viewmodel.AbstractVMNode;
import org.eclipse.cdt.dsf.ui.viewmodel.AbstractVMProvider;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMContext;
import org.eclipse.cdt.dsf.ui.viewmodel.VMDelta;
import org.eclipse.debug.core.DebugEvent;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.model.IProcess;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IChildrenCountUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IChildrenUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IHasChildrenUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta;
import org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta;
import org.eclipse.debug.internal.ui.viewers.provisional.ILabelRequestMonitor;
import org.eclipse.jface.viewers.TreePath;
/**
* Layout node for the standard platform debug model IProcess object. This
* node requires that an ILaunch object be found as an ancestor of this node.
* It does not implement the label provider functionality, so the default
* adapters should be used to retrieve the label.
*/
@SuppressWarnings("restriction")
public class StandardProcessVMNode extends AbstractVMNode {
public StandardProcessVMNode(AbstractVMProvider provider) {
super(provider);
}
@Override
public String toString() {
return "StandardProcessVMNode"; //$NON-NLS-1$
}
@Override
public void update(IChildrenUpdate[] updates) {
for (IChildrenUpdate update : updates) {
ILaunch launch = findLaunch(update.getElementPath());
if (launch == null) {
// There is no launch in the parent of this node. This means that the
// layout is misconfigured.
assert false;
update.done();
continue;
}
/*
* Assume that the process objects are stored within the launch, and
* retrieve them on dispatch thread.
*/
IProcess[] processes = launch.getProcesses();
for (int i = 0; i < processes.length; i++) {
update.setChild(processes[i], i);
}
update.done();
}
}
@Override
public void update(final IChildrenCountUpdate[] updates) {
for (IChildrenCountUpdate update : updates) {
if (!checkUpdate(update)) continue;
ILaunch launch = findLaunch(update.getElementPath());
if (launch == null) {
assert false;
update.setChildCount(0);
update.done();
return;
}
update.setChildCount(launch.getProcesses().length);
update.done();
}
}
// @see org.eclipse.cdt.dsf.ui.viewmodel.IViewModelLayoutNode#hasElements(org.eclipse.cdt.dsf.ui.viewmodel.IVMContext, org.eclipse.cdt.dsf.concurrent.DataRequestMonitor)
@Override
public void update(IHasChildrenUpdate[] updates) {
for (IHasChildrenUpdate update : updates) {
ILaunch launch = findLaunch(update.getElementPath());
if (launch == null) {
assert false;
update.setHasChilren(false);
update.done();
return;
}
update.setHasChilren(launch.getProcesses().length != 0);
update.done();
}
}
// @see org.eclipse.cdt.dsf.ui.viewmodel.IViewModelLayoutNode#retrieveLabel(org.eclipse.cdt.dsf.ui.viewmodel.IVMContext, org.eclipse.debug.internal.ui.viewers.provisional.ILabelRequestMonitor)
public void updateLabel(IVMContext vmc, ILabelRequestMonitor result, String[] columns) {
/*
* The implementation of IAdapterFactory that uses this node should not
* register a label adapter for IProcess. This will cause the default
* label provider to be used instead, and this method should then never
* be called.
*/
assert false;
result.done();
}
/**
* Recursively searches the VMC for Launch VMC, and returns its ILaunch.
* Returns null if an ILaunch is not found.
*/
private ILaunch findLaunch(TreePath path) {
for (int i = path.getSegmentCount() - 1; i >= 0; i--) {
if (path.getSegment(i) instanceof ILaunch) {
return (ILaunch)path.getSegment(i);
}
}
return null;
}
@Override
public int getDeltaFlags(Object e) {
int myFlags = 0;
if (e instanceof DebugEvent) {
DebugEvent de = (DebugEvent)e;
if ( de.getSource() instanceof IProcess &&
(de.getKind() == DebugEvent.CHANGE ||
de.getKind() == DebugEvent.CREATE ||
de.getKind() == DebugEvent.TERMINATE) )
{
myFlags = IModelDelta.STATE;
}
}
return myFlags;
}
@Override
public void buildDelta(Object e, VMDelta parent, int nodeOffset, RequestMonitor requestMonitor) {
if (e instanceof DebugEvent && ((DebugEvent)e).getSource() instanceof IProcess) {
DebugEvent de = (DebugEvent)e;
if (de.getKind() == DebugEvent.CHANGE) {
handleChange(de, parent);
} else if (de.getKind() == DebugEvent.CREATE) {
handleCreate(de, parent);
} else if (de.getKind() == DebugEvent.TERMINATE) {
handleTerminate(de, parent);
}
/*
* No other node should need to process events related to process.
* Therefore, just invoke the request monitor without calling super.buildDelta().
*/
}
requestMonitor.done();
}
protected void handleChange(DebugEvent event, ModelDelta parent) {
parent.addNode(event.getSource(), IModelDelta.STATE);
}
protected void handleCreate(DebugEvent event, ModelDelta parent) {
parent.setFlags(parent.getFlags() | IModelDelta.CONTENT);
}
protected void handleTerminate(DebugEvent event, ModelDelta parent) {
handleChange(event, parent);
}
}