bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/DefaultExplorerSelectionListener.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.browsing.ui.swt;
  13
  14 import org.eclipse.jface.viewers.IPostSelectionProvider;
  15 import org.eclipse.jface.viewers.ISelection;
  16 import org.eclipse.ui.ISelectionListener;
  17 import org.eclipse.ui.IWorkbenchPart;
  18 import org.simantics.browsing.ui.GraphExplorer;
  19
  20 public class DefaultExplorerSelectionListener implements ISelectionListener {
  21
  22     private static final boolean DEBUG = false;
  23
  24     IWorkbenchPart           owner;
  25     GraphExplorer            explorer;
  26     WorkbenchSelectionFilter filter;
  27
  28     public DefaultExplorerSelectionListener(IWorkbenchPart owner, GraphExplorer explorer) {
  29         this(owner, explorer, ResourceSelectionFilter.FILTER);
  30     }
  31
  32     public DefaultExplorerSelectionListener(IWorkbenchPart owner, GraphExplorer explorer, WorkbenchSelectionFilter filter) {
  33         this.owner = owner;
  34         this.explorer = explorer;
  35         this.filter = filter;
  36     }
  37
  38     @Override
  39     public void selectionChanged(IWorkbenchPart part, ISelection selection) {
  40         // Always disregard own selections.
  41         if (part == owner)
  42             return;
  43
  44         if (DEBUG)
  45             System.out.println("[" + owner + "] workbench selection changed: part=" + part + ", selection=" + selection);
  46         ISelection s = selection;
  47         if (filter != null)
  48             s = filter.filterSelection(part, selection);
  49
  50         if (s != null) {
  51             if (DEBUG) {
  52                 System.out.println("** [" + owner + "] workbench selection changed: part=" + part + ", selection=" + selection);
  53                 System.out.println("    SETTING NEW SELECTION");
  54             }
  55             if(!explorer.isDisposed()) {
  56                 IPostSelectionProvider selectionProvider = (IPostSelectionProvider)explorer.getAdapter(IPostSelectionProvider.class);
  57                 selectionProvider.setSelection(selection);
  58             }
  59         } else {
  60             if (DEBUG)
  61                 System.out.println("[" + owner + "] discarding selection: part=" + part + ", selection=" + selection);
  62         }
  63     }
  64 }