/** | |
* <copyright> | |
* | |
* Copyright (c) 2016 itemis 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: | |
* itemis - Initial API and implementation | |
* | |
* </copyright> | |
*/ | |
package org.eclipse.sphinx.emf.explorer.refresh; | |
import java.util.HashSet; | |
import java.util.Set; | |
import org.eclipse.core.resources.IResource; | |
import org.eclipse.jface.viewers.StructuredViewer; | |
import org.eclipse.sphinx.emf.explorer.IModelCommonContentProvider; | |
public class WorkspaceResourceRefreshStrategy extends AbstractRefreshStrategy implements Runnable { | |
private static final int MAX_INDIVIDUAL_WORKSPACE_RESOURCE_REFRESHES = 20; | |
private Set<IResource> workspaceResourcesToRefresh = null; | |
public WorkspaceResourceRefreshStrategy(IModelCommonContentProvider contentProvider, boolean preserveTreeViewerState) { | |
super(contentProvider, preserveTreeViewerState); | |
} | |
public Set<IResource> getWorkspaceResourcesToRefresh() { | |
if (workspaceResourcesToRefresh == null) { | |
workspaceResourcesToRefresh = new HashSet<IResource>(); | |
} | |
return workspaceResourcesToRefresh; | |
} | |
@Override | |
protected boolean shouldPerformSelectiveRefresh() { | |
return getWorkspaceResourcesToRefresh().size() < MAX_INDIVIDUAL_WORKSPACE_RESOURCE_REFRESHES; | |
} | |
@Override | |
protected void performSelectiveRefresh(StructuredViewer viewer) { | |
for (IResource workspaceResource : getWorkspaceResourcesToRefresh()) { | |
if (workspaceResource != null && workspaceResource.isAccessible()) { | |
if (contentProvider.isTriggerPoint(workspaceResource)) { | |
viewer.refresh(workspaceResource, true); | |
} | |
} | |
} | |
} | |
} |