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/*******************************************************************************
* Copyright (c) 2010 Boeing.
* 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:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.ui.skynet.explorer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.logging.Level;
import org.eclipse.osee.framework.core.data.BranchId;
import org.eclipse.osee.framework.core.model.Branch;
import org.eclipse.osee.framework.core.model.event.DefaultBasicGuidArtifact;
import org.eclipse.osee.framework.logging.OseeLog;
import org.eclipse.osee.framework.skynet.core.artifact.Artifact;
import org.eclipse.osee.framework.skynet.core.artifact.ArtifactCache;
import org.eclipse.osee.framework.skynet.core.event.EventUtil;
import org.eclipse.osee.framework.skynet.core.event.OseeEventManager;
import org.eclipse.osee.framework.skynet.core.event.filter.IEventFilter;
import org.eclipse.osee.framework.skynet.core.event.listener.IArtifactEventListener;
import org.eclipse.osee.framework.skynet.core.event.model.AccessTopicEvent;
import org.eclipse.osee.framework.skynet.core.event.model.ArtifactEvent;
import org.eclipse.osee.framework.skynet.core.event.model.EventBasicGuidArtifact;
import org.eclipse.osee.framework.skynet.core.event.model.EventModType;
import org.eclipse.osee.framework.skynet.core.event.model.Sender;
import org.eclipse.osee.framework.ui.skynet.IArtifactExplorerEventHandler;
import org.eclipse.osee.framework.ui.skynet.internal.Activator;
import org.eclipse.osee.framework.ui.swt.Displays;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.PlatformUI;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventHandler;
/**
* Common location for event handling for ArtifactExplorers in order to keep number of registrations and processing to a
* minimum.
*
* @author Donald G. Dunne
*/
public class ArtifactExplorerEventManager implements IArtifactEventListener, EventHandler {
static List<IArtifactExplorerEventHandler> handlers = new CopyOnWriteArrayList<>();
static ArtifactExplorerEventManager instance;
public static void add(IArtifactExplorerEventHandler iWorldEventHandler) {
if (instance == null) {
instance = new ArtifactExplorerEventManager();
OseeEventManager.addListener(instance);
}
ArtifactExplorerEventManager.handlers.add(iWorldEventHandler);
}
public static void remove(IArtifactExplorerEventHandler iWorldEventHandler) {
if (instance != null) {
ArtifactExplorerEventManager.handlers.remove(iWorldEventHandler);
}
}
@Override
public List<? extends IEventFilter> getEventFilters() {
// Can't filter cause this class handles all artifact explorers which can care about different branches
return null;
}
/**
* @return true if branch is not null, matches the branch for the event and is not deleted or purged
*/
private boolean isArtifactExplorerValidForEvents(ArtifactExplorer artifactExplorer, BranchId brancFromEvent) {
boolean toReturn = false;
if (artifactExplorer != null) {
Branch branch = artifactExplorer.getBranch();
toReturn = branch != null && brancFromEvent.equals(branch) && !branch.isDeleted() && !branch.isPurged();
}
return toReturn;
}
@Override
public void handleArtifactEvent(final ArtifactEvent artifactEvent, Sender sender) {
IWorkbench workbench = PlatformUI.getWorkbench();
if (workbench == null || workbench.isClosing() || workbench.isStarting()) {
return;
}
// Do not process event if branch is null, deleted or purged. But, don't want to remove as handler cause another branch may be selected
final List<IArtifactExplorerEventHandler> handlersToProcess = new ArrayList<>();
for (IArtifactExplorerEventHandler handler : handlers) {
if (handler.isDisposed()) {
handlers.remove(handler);
} else if (isArtifactExplorerValidForEvents(handler.getArtifactExplorer(), artifactEvent.getBranch())) {
handlersToProcess.add(handler);
}
}
EventUtil.eventLog("ArtifacExplorer: handleArtifactEvent called [" + artifactEvent + "] - sender " + sender + "");
final Collection<Artifact> modifiedArts =
artifactEvent.getCacheArtifacts(EventModType.Modified, EventModType.Reloaded);
artifactEvent.getRelCacheArtifacts();
final Collection<EventBasicGuidArtifact> deletedPurgedArts =
artifactEvent.get(EventModType.Deleted, EventModType.Purged);
final Collection<DefaultBasicGuidArtifact> relOrderChangedArtifacts = artifactEvent.getRelOrderChangedArtifacts();
Displays.ensureInDisplayThread(new Runnable() {
@Override
public void run() {
if (!deletedPurgedArts.isEmpty()) {
for (IArtifactExplorerEventHandler handler : handlersToProcess) {
try {
if (!handler.isDisposed()) {
handler.getArtifactExplorer().getTreeViewer().remove(
deletedPurgedArts.toArray(new Object[deletedPurgedArts.size()]));
}
} catch (Exception ex) {
OseeLog.log(Activator.class, Level.SEVERE,
"Error processing event handler for deleted - " + handler, ex);
}
}
}
for (IArtifactExplorerEventHandler handler : handlersToProcess) {
try {
if (!handler.isDisposed()) {
for (Artifact artifact : modifiedArts) {
// Don't refresh deleted artifacts
if (artifact.isDeleted()) {
continue;
}
handler.getArtifactExplorer().getTreeViewer().update(artifact, null);
}
// We do not need to refresh each artifact for each handler, just the handler itself
handler.getArtifactExplorer().getTreeViewer().refresh();
for (DefaultBasicGuidArtifact guidArt : relOrderChangedArtifacts) {
try {
Artifact artifact = ArtifactCache.getActive(guidArt);
if (artifact != null) {
handler.getArtifactExplorer().getTreeViewer().refresh(artifact);
}
} catch (Exception ex) {
OseeLog.log(Activator.class, Level.SEVERE, ex);
}
}
}
} catch (Exception ex) {
OseeLog.log(Activator.class, Level.SEVERE, "Error processing event handler for modified - " + handler,
ex);
}
}
}
});
}
@Override
public void handleEvent(Event event) {
try {
if (AccessTopicEvent.ACCESS_ARTIFACT_LOCK_MODIFIED.matches(event)) {
for (final IArtifactExplorerEventHandler handler : handlers) {
if (!handler.isDisposed()) {
Displays.ensureInDisplayThread(new Runnable() {
@Override
public void run() {
handler.getArtifactExplorer().getTreeViewer().refresh();
handler.getArtifactExplorer().refreshBranchWarning();
}
});
}
}
}
} catch (Exception ex) {
OseeLog.log(Activator.class, Level.SEVERE, ex);
}
}
}
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