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 public class FilterUpdater implements IResourceChangeListener {
  21
  22         private StructuredViewer fViewer;
  23
  24         public FilterUpdater(StructuredViewer viewer) {
  25                 Assert.isNotNull(viewer);
  26                 fViewer = viewer;
  27         }
  28
  29         /*
  30          * (non-Javadoc)
  31          *
  32          * @see org.eclipse.core.resources.IResourceChangeListener#resourceChanged(org.eclipse.core.resources.IResourceChangeEvent)
  33          */
  34         public void resourceChanged(IResourceChangeEvent event) {
  35                 IResourceDelta delta = event.getDelta();
  36                 if (delta == null)
  37                         return;
  38
  39                 IResourceDelta[] projDeltas = delta
  40                                 .getAffectedChildren(IResourceDelta.CHANGED);
  41                 for (int i = 0; i < projDeltas.length; i++) {
  42                         IResourceDelta pDelta = projDeltas[i];
  43                         if ((pDelta.getFlags() & IResourceDelta.DESCRIPTION) != 0) {
  44                                 final Control ctrl = fViewer.getControl();
  45                                 if (ctrl != null && !ctrl.isDisposed()) {
  46                                         // async is needed due to bug 33783
  47                                         ctrl.getDisplay().asyncExec(new Runnable() {
  48                                                 public void run() {
  49                                                         if (!ctrl.isDisposed())
  50                                                                 fViewer.refresh(false);
  51                                                 }
  52                                         });
  53                                 }
  54                         }
  55                 }
  56         }
  57 }