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/*******************************************************************************
* Copyright (c) 2005, 2015 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
* Wind River - Pawel Piech - Fixed debug context service usage (Bug 258189)
*******************************************************************************/
package org.eclipse.debug.internal.ui.sourcelookup;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.PlatformObject;
import org.eclipse.debug.internal.ui.views.launch.DebugElementAdapterFactory;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.contexts.DebugContextEvent;
import org.eclipse.debug.ui.contexts.IDebugContextListener;
import org.eclipse.debug.ui.contexts.IDebugContextService;
import org.eclipse.debug.ui.sourcelookup.ISourceDisplay;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
/**
* Performs source lookup in a window.
*
* @since 3.2
*/
public class SourceLookupService implements IDebugContextListener, ISourceDisplay {
private IWorkbenchWindow fWindow;
private IDebugContextService fDebugContextService;
public SourceLookupService(IWorkbenchWindow window) {
fWindow = window;
fDebugContextService = DebugUITools.getDebugContextManager().getContextService(window);
fDebugContextService.addDebugContextListener(this);
}
public void dispose() {
fDebugContextService.removeDebugContextListener(this);
fWindow = null;
}
@Override
public synchronized void debugContextChanged(DebugContextEvent event) {
if ((event.getFlags() & DebugContextEvent.ACTIVATED) > 0) {
displaySource(event.getContext(), event.getDebugContextProvider().getPart(), false);
}
}
/**
* Displays source for the given selection and part, optionally forcing
* a source lookup.
*
* @param selection
* @param part
* @param force
*/
protected synchronized void displaySource(ISelection selection, IWorkbenchPart part, boolean force) {
if (fWindow == null) return; // disposed
if (selection instanceof IStructuredSelection) {
IStructuredSelection structuredSelection = (IStructuredSelection)selection;
if (structuredSelection.size() == 1) {
Object context = (structuredSelection).getFirstElement();
IWorkbenchPage page = null;
if (part == null) {
page = fWindow.getActivePage();
} else {
page = part.getSite().getPage();
}
displaySource(context, page, force);
}
}
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.contexts.ISourceDisplayAdapter#displaySource(java.lang.Object, org.eclipse.ui.IWorkbenchPage, boolean)
*/
@Override
public void displaySource(Object context, IWorkbenchPage page, boolean forceSourceLookup) {
if (context instanceof IAdaptable) {
IAdaptable adaptable = (IAdaptable) context;
ISourceDisplay adapter = adaptable.getAdapter(ISourceDisplay.class);
if (adapter == null && !(context instanceof PlatformObject)) {
// for objects that don't properly subclass PlatformObject to inherit default
// adapters, just delegate to the adapter factory
adapter = new DebugElementAdapterFactory().getAdapter(context, ISourceDisplay.class);
}
if (adapter != null) {
adapter.displaySource(context, page, forceSourceLookup);
}
}
}
}
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