bundles/org.simantics.browsing.ui.nattable/src/org/simantics/browsing/ui/nattable/override/TreeCollapseAllCommandHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013 Dirk Fauth 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  *    Dirk Fauth <dirk.fauth@gmail.com> - initial API and implementation
  10  *******************************************************************************/
  11 package org.simantics.browsing.ui.nattable.override;
  12
  13 import org.eclipse.nebula.widgets.nattable.command.ILayerCommandHandler;
  14 import org.eclipse.nebula.widgets.nattable.layer.ILayer;
  15 import org.eclipse.nebula.widgets.nattable.tree.TreeLayer;
  16 import org.eclipse.nebula.widgets.nattable.tree.command.TreeCollapseAllCommand;
  17
  18 /**
  19  * Command handler for the TreeCollapseAllCommand.
  20  * <p>
  21  * Will search over the whole tree structure in the associated TreeLayer to
  22  * identify collapsible nodes and collapse them one after the other.
  23  *
  24  * @author Dirk Fauth
  25  *
  26  * @see TreeLayer
  27  * @see TreeCollapseAllCommand
  28  */
  29 public class TreeCollapseAllCommandHandler implements
  30         ILayerCommandHandler<TreeCollapseAllCommand> {
  31
  32     /**
  33      * The TreeLayer to which this command handler is connected.
  34      */
  35     private final TreeLayer2 treeLayer;
  36
  37     /**
  38      *
  39      * @param treeLayer
  40      *            The TreeLayer to which this command handler should be
  41      *            connected.
  42      */
  43     public TreeCollapseAllCommandHandler(TreeLayer2 treeLayer) {
  44         this.treeLayer = treeLayer;
  45     }
  46
  47     @Override
  48     public boolean doCommand(ILayer targetLayer, TreeCollapseAllCommand command) {
  49         this.treeLayer.collapseAll();
  50         return true;
  51     }
  52
  53     @Override
  54     public Class<TreeCollapseAllCommand> getCommandClass() {
  55         return TreeCollapseAllCommand.class;
  56     }
  57
  58 }