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/*******************************************************************************
* Copyright (c) 2004, 2012 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
*******************************************************************************/
package org.eclipse.debug.internal.ui.views.breakpoints;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.Platform;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.breakpoints.provisional.IBreakpointOrganizer;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
/**
* Manager which provides access to the breakpoint organizers
* contributed via the org.eclipse.debug.ui.breakpointOrganizers
* extension point.
* <p>
* Manages the default breakpoint working set and places newly
* create breakpoints in to that set.
* </p>
* @since 3.1
*/
public class BreakpointOrganizerManager {
private static BreakpointOrganizerManager fgManager;
// map for lookup by id
private Map<String, IBreakpointOrganizer> fOrganizers = new HashMap<String, IBreakpointOrganizer>();
// cached sorted list by label
private List<IBreakpointOrganizer> fSorted = null;
/**
* Returns the singleton instance of the breakpoint container
* factory manager.
* @return the singleton {@link BreakpointOrganizerManager}
*/
public static BreakpointOrganizerManager getDefault() {
if (fgManager == null) {
fgManager= new BreakpointOrganizerManager();
}
return fgManager;
}
/**
* Creates and initializes a new breakpoint container factory.
*/
private BreakpointOrganizerManager() {
loadOrganizers();
// force the working set organizers to initialize their listeners
start("org.eclipse.debug.ui.workingSetOrganizer"); //$NON-NLS-1$
start("org.eclipse.debug.ui.breakpointWorkingSetOrganizer"); //$NON-NLS-1$
}
/**
* Forces instantiation of organizer delegate.
*
* @param organizerId organizer to start
*/
private void start(String organizerId) {
IBreakpointOrganizer organizer = getOrganizer(organizerId);
IPropertyChangeListener listener = new IPropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent event) {
}
};
organizer.addPropertyChangeListener(listener);
organizer.removePropertyChangeListener(listener);
}
/**
* Loads all contributed breakpoint organizers.
*/
private void loadOrganizers() {
IExtensionPoint extensionPoint= Platform.getExtensionRegistry().getExtensionPoint(DebugUIPlugin.getUniqueIdentifier(), IDebugUIConstants.EXTENSION_POINT_BREAKPOINT_ORGANIZERS);
IConfigurationElement[] configurationElements = extensionPoint.getConfigurationElements();
for (int i = 0; i < configurationElements.length; i++) {
IConfigurationElement element= configurationElements[i];
IBreakpointOrganizer organizer = new BreakpointOrganizerExtension(element);
if (validateOrganizer(organizer)) {
fOrganizers.put(organizer.getIdentifier(), organizer);
}
}
}
/**
* Validates the given organizer. Checks that certain required attributes
* are available.
* @param organizer the organizer to check
* @return whether the given organizer is valid
*/
protected static boolean validateOrganizer(IBreakpointOrganizer organizer) {
String id = organizer.getIdentifier();
String label = organizer.getLabel();
return id != null && id.length() > 0 && label != null && label.length() > 0;
}
/**
* Returns all contributed breakpoint organizers.
*
* @return all contributed breakpoint organizers
*/
public IBreakpointOrganizer[] getOrganizers() {
if (fSorted == null) {
Collection<IBreakpointOrganizer> collection = fOrganizers.values();
fSorted = new ArrayList<IBreakpointOrganizer>();
fSorted.addAll(collection);
Collections.sort(fSorted, new Comparator<Object>() {
@Override
public int compare(Object o1, Object o2) {
IBreakpointOrganizer b1 = (IBreakpointOrganizer)o1;
IBreakpointOrganizer b2 = (IBreakpointOrganizer)o2;
return b1.getLabel().compareTo(b2.getLabel());
}
});
}
return fSorted.toArray(new IBreakpointOrganizer[fSorted.size()]);
}
/**
* Returns the specified breakpoint organizer or <code>null</code>
* @param id organizer identifier
* @return breakpoint organizer or <code>null</code>
*/
public IBreakpointOrganizer getOrganizer(String id) {
return fOrganizers.get(id);
}
/**
* Shuts down the organizer manager, disposing organizers.
*/
public void shutdown() {
IBreakpointOrganizer[] organizers = getOrganizers();
for (int i = 0; i < organizers.length; i++) {
IBreakpointOrganizer organizer = organizers[i];
organizer.dispose();
}
}
}
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