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/*******************************************************************************
* Copyright (c) 2006, 2018 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
* IBM Corporation - bug fixing
*******************************************************************************/
package org.eclipse.debug.internal.ui.contexts;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.debug.ui.contexts.DebugContextEvent;
import org.eclipse.debug.ui.contexts.IDebugContextListener;
import org.eclipse.debug.ui.contexts.IDebugContextService;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.AbstractSourceProvider;
import org.eclipse.ui.ISources;
import org.eclipse.ui.services.IEvaluationService;
/**
* A source provider for the active debug context variable.
*
* @since 3.5
*/
public class DebugContextSourceProvider extends AbstractSourceProvider implements IDebugContextListener {
/**
* The names of the sources supported by this source provider.
*/
private static final String[] PROVIDED_SOURCE_NAMES = new String[] { IDebugUIConstants.DEBUG_CONTEXT_SOURCE_NAME };
private final IDebugContextService fDebugContextService;
private final IEvaluationService fEvaluationService;
/**
* Creates the source provider. It registers it as a listener to the
* given debug context service, and as a provider with the given
* evaluation service.
*/
public DebugContextSourceProvider(IDebugContextService debugContextService, IEvaluationService evaluationService) {
fDebugContextService = debugContextService;
fDebugContextService.addDebugContextListener(this);
fEvaluationService = evaluationService;
fEvaluationService.addSourceProvider(this);
}
@Override
public void debugContextChanged(DebugContextEvent event) {
final Map<String, ISelection> values = new HashMap<>(1);
values.put(IDebugUIConstants.DEBUG_CONTEXT_SOURCE_NAME, event.getContext());
// make sure fireSourceChanged is called on the UI thread
if (Display.getCurrent() == null) {
DebugUIPlugin.getStandardDisplay().asyncExec(() -> fireSourceChanged(ISources.ACTIVE_CURRENT_SELECTION, values));
} else {
fireSourceChanged(ISources.ACTIVE_CURRENT_SELECTION, values);
}
}
@Override
public void dispose() {
fDebugContextService.removeDebugContextListener(this);
fEvaluationService.removeSourceProvider(this);
}
@Override
public String[] getProvidedSourceNames() {
return PROVIDED_SOURCE_NAMES;
}
@Override
public Map getCurrentState() {
Map<String, ISelection> currentState = new HashMap<>(1);
currentState.put(IDebugUIConstants.DEBUG_CONTEXT_SOURCE_NAME, fDebugContextService.getActiveContext());
return currentState;
}
}
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