/******************************************************************************* * Copyright (c) 2007, 2013 Association for Decentralized Information Management * in Industry THTH ry. * 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: * VTT Technical Research Centre of Finland - initial API and implementation * Semantum Oy - index based searching (#4255) *******************************************************************************/ package org.simantics.ui.workbench.dialogs; import gnu.trove.map.hash.THashMap; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.concurrent.CopyOnWriteArrayList; import java.util.concurrent.atomic.AtomicBoolean; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.MultiStatus; import org.eclipse.core.runtime.Status; import org.eclipse.core.runtime.jobs.Job; import org.eclipse.jface.resource.DeviceResourceManager; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.resource.ResourceManager; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.LabelProviderChangedEvent; import org.eclipse.swt.graphics.Device; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Display; import org.eclipse.ui.progress.IProgressConstants; import org.simantics.DatabaseJob; import org.simantics.Simantics; import org.simantics.db.ReadGraph; import org.simantics.db.Resource; import org.simantics.db.Session; import org.simantics.db.common.request.ReadRequest; import org.simantics.db.common.utils.NameUtils; import org.simantics.db.exception.DatabaseException; import org.simantics.ui.icons.ImageDescriptorProvider; import org.simantics.ui.icons.ImageUtil; import org.simantics.ui.internal.Activator; import org.simantics.utils.threads.IThreadWorkQueue; import org.simantics.utils.threads.SWTThread; import org.simantics.utils.ui.gfx.CompositionImageDescriptor; /** * ResourceLabelProvider is a label provider for Simantics database * {@link Resource}s. * *
* This label provider utilizes {@link ImageDescriptorProvider} adapters for
* determining the icon to use.
*
* @author Toni Kalajainen
* @author Tuukka Lehtonen
*
* @see Resource
* @see ILabelProvider
* @see ILabelProviderListener
*/
public class ResourceLabelProvider implements ILabelProvider {
protected Listtrue
if scheduled, false
otherwise
*/
public boolean scheduleIfNecessary(long delay) {
if (isScheduled.compareAndSet(false, true)) {
schedule(delay);
return true;
}
return false;
}
void dispose() {
tasks = null;
labelProvider = null;
}
@Override
public boolean shouldSchedule() {
return tasks != null;
}
@Override
public boolean shouldRun() {
return tasks != null;
}
@Override
protected IStatus run(IProgressMonitor monitor) {
try {
isScheduled.set(false);
TaskRepository tr = tasks;
if (tr == null)
return Status.CANCEL_STATUS;
Task[] taskList = tr.pruneTasks();
return runTasks(tr, taskList);
} finally {
monitor.done();
}
}
private IStatus runTasks(final TaskRepository tr, final Task[] taskList) {
Session session = Simantics.peekSession();
if (session == null)
return Status.CANCEL_STATUS;
final ResourceManager rm = tr.resourceManager;
if (rm == null)
return Status.CANCEL_STATUS;
final MultiStatus result = new MultiStatus(Activator.PLUGIN_ID, 0, "Problems encountered while invoking resource label provider:", null);
try {
Simantics.getSession().syncRequest(new ReadRequest() {
@Override
public void run(ReadGraph graph) throws DatabaseException {
for (Task task : taskList) {
try {
if (tr.isDisposed())
return;
runTask(rm, graph, task);
tasks.complete(task);
} catch (DatabaseException e) {
result.add(new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e));
}
}
}
});
return result;
} catch (DatabaseException e) {
return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Resource label provider failed unexpectedly.", e);
} finally {
labelProvider.asyncFireChangedEvent(new LabelProviderChangedEvent(labelProvider));
}
}
protected void runTask(ResourceManager rm, ReadGraph graph, Task task) throws DatabaseException {
task.label = getText(graph, task.resource);
task.image = getImage(rm, graph, task.resource);
}
protected String getText(ReadGraph graph, Resource resource) {
try {
return graph.adapt(resource, String.class);
} catch (DatabaseException e) {
try {
return NameUtils.getSafeName(graph, resource);
} catch (DatabaseException e2) {
return "";
}
}
}
public Image getImage(ResourceManager rm, ReadGraph graph, Resource resource) throws DatabaseException {
ImageDescriptor i = getImageDescriptor(graph, resource);
return i == null ? null : (Image) rm.get(i);
}
public ImageDescriptor getImageDescriptor(ReadGraph graph, Resource resource, ImageDescriptor... decorations)
throws DatabaseException {
ImageDescriptor baseImage = ImageUtil.adaptImageDescriptor(graph, resource);
if (baseImage == null)
return null;
if (decorations == null || decorations.length == 0)
return baseImage;
List