net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/viewsupport/FilterUpdater.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.ui.viewsupport;
  12
  13 import org.eclipse.core.resources.IResourceChangeEvent;
  14 import org.eclipse.core.resources.IResourceChangeListener;
  15 import org.eclipse.core.resources.IResourceDelta;
  16 import org.eclipse.jface.util.Assert;
  17 import org.eclipse.jface.viewers.StructuredViewer;
  18 import org.eclipse.swt.widgets.Control;
  19
  20
  21 public class FilterUpdater implements IResourceChangeListener {
  22
  23         private StructuredViewer fViewer;
  24
  25         public FilterUpdater(StructuredViewer viewer) {
  26                 Assert.isNotNull(viewer);
  27                 fViewer= viewer;
  28         }
  29
  30         /* (non-Javadoc)
  31          * @see org.eclipse.core.resources.IResourceChangeListener#resourceChanged(org.eclipse.core.resources.IResourceChangeEvent)
  32          */
  33         public void resourceChanged(IResourceChangeEvent event) {
  34                 IResourceDelta delta= event.getDelta();
  35                 if (delta == null)
  36                         return;
  37
  38                 IResourceDelta[] projDeltas = delta.getAffectedChildren(IResourceDelta.CHANGED);
  39                 for (int i= 0; i < projDeltas.length; i++) {
  40                         IResourceDelta pDelta= projDeltas[i];
  41                         if ((pDelta.getFlags() & IResourceDelta.DESCRIPTION) != 0) {
  42                                 final Control ctrl= fViewer.getControl();
  43                                 if (ctrl != null && !ctrl.isDisposed()) {
  44                                         // async is needed due to bug 33783
  45                                         ctrl.getDisplay().asyncExec(new Runnable() {
  46                                                 public void run() {
  47                                                         if (!ctrl.isDisposed())
  48                                                                 fViewer.refresh(false);
  49                                                 }
  50                                         });
  51                                 }
  52                         }
  53                 }
  54         }
  55 }