bundles/org.simantics.diagram/src/org/simantics/diagram/handler/CollapseAll.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007 VTT Technical Research Centre of Finland and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     VTT Technical Research Centre of Finland - initial API and implementation
  10  *******************************************************************************/
  11 package org.simantics.diagram.handler;
  12
  13
  14 import org.eclipse.core.commands.AbstractHandler;
  15 import org.eclipse.core.commands.ExecutionEvent;
  16 import org.eclipse.core.commands.ExecutionException;
  17 import org.eclipse.core.commands.IHandler;
  18 import org.eclipse.ui.IWorkbenchPart;
  19 import org.eclipse.ui.handlers.HandlerUtil;
  20 import org.eclipse.ui.part.IPage;
  21 import org.simantics.diagram.symbollibrary.ui.SymbolLibraryPage;
  22 import org.simantics.diagram.symbollibrary.ui.SymbolPageView;
  23
  24 public class CollapseAll extends AbstractHandler implements IHandler {
  25
  26     @Override
  27     public Object execute(ExecutionEvent event) throws ExecutionException {
  28
  29         IWorkbenchPart part = HandlerUtil.getActivePart(event);
  30         if(part == null) return null;
  31         if(part instanceof SymbolPageView) {
  32                 SymbolPageView view = (SymbolPageView)part;
  33                 IPage page = view.getCurrentPage();
  34                 if(page == null) return null;
  35                 if(page instanceof SymbolLibraryPage) {
  36                         SymbolLibraryPage libraryPage = (SymbolLibraryPage)page;
  37                         libraryPage.setAllExpandedStates(false);
  38                 }
  39         }
  40
  41         return null;
  42
  43     }
  44
  45 }