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/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. 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.debug.internal.ui.views.signals;
import org.eclipse.cdt.debug.internal.ui.ICDebugHelpContextIds;
import org.eclipse.cdt.debug.ui.ICDebugUIConstants;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.debug.internal.ui.DelegatingModelPresentation;
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.IPresentationContext;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerInputRequestor;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerInputUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdateListener;
import org.eclipse.debug.internal.ui.viewers.model.provisional.PresentationContext;
import org.eclipse.debug.internal.ui.viewers.model.provisional.TreeModelViewer;
import org.eclipse.debug.internal.ui.viewers.model.provisional.ViewerInputService;
import org.eclipse.debug.internal.ui.views.DebugModelPresentationContext;
import org.eclipse.debug.ui.AbstractDebugView;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.IDebugModelPresentation;
import org.eclipse.debug.ui.contexts.DebugContextEvent;
import org.eclipse.debug.ui.contexts.IDebugContextListener;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.progress.IWorkbenchSiteProgressService;
/**
* A Signals view based on flexible hierarchy.
*/
public class FlexibleSignalsView extends AbstractDebugView implements IViewerUpdateListener, IDebugContextListener, IModelChangedListener {
private PresentationContext fPresentationContext;
private DelegatingModelPresentation fModelPresentation;
/**
* Viewer input requester used to update the viewer once the viewer input has been
* resolved.
*/
private IViewerInputRequestor fRequester = new IViewerInputRequestor() {
@Override
public void viewerInputComplete(IViewerInputUpdate update) {
if (!update.isCanceled()) {
viewerInputUpdateComplete(update);
}
}
};
private ViewerInputService fInputService;
@Override
protected Viewer createViewer(Composite parent) {
getModelPresentation();
TreeModelViewer signalsViewer = createTreeViewer(parent);
fInputService = new ViewerInputService(signalsViewer, fRequester);
getSite().setSelectionProvider(signalsViewer);
signalsViewer.addModelChangedListener(this);
signalsViewer.addViewerUpdateListener(this);
return signalsViewer;
}
/**
* @return the model presentation to be used for this view
*/
protected IDebugModelPresentation getModelPresentation() {
if (fModelPresentation == null) {
fModelPresentation = new DelegatingModelPresentation();
}
return fModelPresentation;
}
protected TreeModelViewer createTreeViewer(Composite parent) {
int style = getViewerStyle();
fPresentationContext = new DebugModelPresentationContext(getPresentationContextId(), this, fModelPresentation);
final TreeModelViewer variablesViewer = new TreeModelViewer(parent, style, fPresentationContext);
variablesViewer.getPresentationContext().addPropertyChangeListener(
new IPropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent event) {
if (IPresentationContext.PROPERTY_COLUMNS.equals(event.getProperty())) {
IAction action = getAction("ShowTypeNames"); //$NON-NLS-1$
if (action != null) {
action.setEnabled(event.getNewValue() == null);
}
}
}
});
DebugUITools.getDebugContextManager().getContextService(getSite().getWorkbenchWindow()).addDebugContextListener(this);
return variablesViewer;
}
protected void viewerInputUpdateComplete(IViewerInputUpdate update) {
setViewerInput(update.getInputElement());
}
/**
* Sets the input to the viewer
* @param context the object context
*/
protected void setViewerInput(Object context) {
Object current = getViewer().getInput();
if (current == null && context == null) {
return;
}
if (current != null && current.equals(context)) {
return;
}
showViewer();
getViewer().setInput(context);
}
/**
* Returns the presentation context id for this view.
*
* @return context id
*/
protected String getPresentationContextId() {
return ICDebugUIConstants.ID_SIGNALS_VIEW;
}
/**
* Returns the style bits for the viewer.
*
* @return SWT style
*/
protected int getViewerStyle() {
return SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL | SWT.VIRTUAL | SWT.FULL_SELECTION;
}
@Override
protected void createActions() {
}
@Override
protected String getHelpContextId() {
return ICDebugHelpContextIds.SIGNALS_VIEW;
}
@Override
protected void fillContextMenu(IMenuManager menu) {
menu.add( new Separator( IWorkbenchActionConstants.MB_ADDITIONS ) );
updateObjects();
}
@Override
protected void configureToolBar(IToolBarManager tbm) {
}
/*
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdateListener#viewerUpdatesBegin()
*/
@Override
public void viewerUpdatesBegin() {
IWorkbenchSiteProgressService progressService =
getSite().getAdapter(IWorkbenchSiteProgressService.class);
if (progressService != null) {
progressService.incrementBusy();
}
}
/*
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdateListener#viewerUpdatesComplete()
*/
@Override
public void viewerUpdatesComplete() {
IWorkbenchSiteProgressService progressService =
getSite().getAdapter(IWorkbenchSiteProgressService.class);
if (progressService != null) {
progressService.decrementBusy();
}
}
/*
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdateListener#updateStarted(org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate)
*/
@Override
public void updateStarted(IViewerUpdate update) {
}
/*
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdateListener#updateComplete(org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate)
*/
@Override
public void updateComplete(IViewerUpdate update) {
IStatus status = update.getStatus();
if (!update.isCanceled()) {
if (status != null && !status.isOK()) {
showMessage(status.getMessage());
} else {
showViewer();
}
}
}
/*
* @see org.eclipse.debug.ui.contexts.IDebugContextListener#debugContextChanged(org.eclipse.debug.ui.contexts.DebugContextEvent)
*/
@Override
public void debugContextChanged(DebugContextEvent event) {
if ((event.getFlags() & DebugContextEvent.ACTIVATED) > 0) {
contextActivated(event.getContext());
}
}
/**
* Updates actions and sets the viewer input when a context is activated.
* @param selection
*/
protected void contextActivated(ISelection selection) {
if (!isAvailable() || !isVisible()) {
return;
}
if (selection instanceof IStructuredSelection) {
Object source = ((IStructuredSelection)selection).getFirstElement();
fInputService.resolveViewerInput(source);
}
}
/*
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IModelChangedListener#modelChanged(org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta, org.eclipse.debug.internal.ui.viewers.model.provisional.IModelProxy)
*/
@Override
public void modelChanged(IModelDelta delta, IModelProxy proxy) {
}
}
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