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

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