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/*******************************************************************************
* Copyright (c) 2005, 2013 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
*
* Contributors:
* IBM Corporation - initial API and implementation
* Bjorn Freeman-Benson - initial API and implementation
* Wind River - Pawel Piech - replaced actions with handlers (bug 229219)
* Pawel Piech (Wind River) - ported PDA Virtual Machine to Java (Bug 261400)
******************************************************************************/
package org.eclipse.debug.examples.ui.pda.views;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.examples.core.pda.model.PDAStackFrame;
import org.eclipse.debug.examples.core.pda.model.PDAThread;
import org.eclipse.debug.ui.AbstractDebugView;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.contexts.DebugContextEvent;
import org.eclipse.debug.ui.contexts.IDebugContextListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.progress.UIJob;
/**
* View of the PDA VM data stack
*/
public class DataStackView extends AbstractDebugView implements IDebugContextListener {
private PDAThread fThread;
class StackViewContentProvider implements ITreeContentProvider {
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
*/
@Override
public Object[] getChildren(Object parentElement) {
if (parentElement instanceof PDAThread) {
try {
return ((PDAThread)parentElement).getDataStack();
} catch (DebugException e) {
}
}
return new Object[0];
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
*/
@Override
public Object getParent(Object element) {
if (element instanceof PDAThread) {
return null;
} else {
return fThread;
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
*/
@Override
public boolean hasChildren(Object element) {
return element instanceof PDAThread;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
@Override
public Object[] getElements(Object inputElement) {
return getChildren(inputElement);
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#dispose()
*/
@Override
public void dispose() {
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.AbstractDebugView#createViewer(org.eclipse.swt.widgets.Composite)
*/
@Override
protected Viewer createViewer(Composite parent) {
TreeViewer viewer = new TreeViewer(parent);
viewer.setLabelProvider(DebugUITools.newDebugModelPresentation());
viewer.setContentProvider(new StackViewContentProvider());
DebugUITools.getDebugContextManager().getContextService(getSite().getWorkbenchWindow()).addDebugContextListener(this);
getSite().setSelectionProvider(viewer);
return viewer;
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.AbstractDebugView#createActions()
*/
@Override
protected void createActions() {
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.AbstractDebugView#getHelpContextId()
*/
@Override
protected String getHelpContextId() {
return null;
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.AbstractDebugView#fillContextMenu(org.eclipse.jface.action.IMenuManager)
*/
@Override
protected void fillContextMenu(IMenuManager menu) {
menu.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.AbstractDebugView#configureToolBar(org.eclipse.jface.action.IToolBarManager)
*/
@Override
protected void configureToolBar(IToolBarManager tbm) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IWorkbenchPart#dispose()
*/
@Override
public void dispose() {
DebugUITools.getDebugContextManager().getContextService(getSite().getWorkbenchWindow()).removeDebugContextListener(this);
super.dispose();
}
@Override
public void debugContextChanged(final DebugContextEvent event) {
new UIJob(getSite().getShell().getDisplay(), "DataStackView update") { //$NON-NLS-1$
{
setSystem(true);
}
@Override
public IStatus runInUIThread(IProgressMonitor monitor) {
if (getViewer() != null) { // runs asynchronously, view may be disposed
update(event.getContext());
}
return Status.OK_STATUS;
}
}.schedule();
}
/**
* Updates the view for the selected thread (if suspended)
*/
private void update(ISelection context) {
fThread = null;
if (context instanceof IStructuredSelection) {
Object element = ((IStructuredSelection)context).getFirstElement();
if (element instanceof PDAThread) {
fThread = (PDAThread)element;
} else if (element instanceof PDAStackFrame) {
fThread = (PDAThread)((PDAStackFrame)element).getThread();
}
}
Object input = null;
if (fThread != null && fThread.isSuspended()) {
input = fThread;
}
getViewer().setInput(input);
getViewer().refresh();
}
}
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