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Viewing changes to systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/actions/TreeExpandCollapseAction.java

  • Committer: Package Import Robot
  • Author(s): Jakub Adam
  • Date: 2014-05-12 18:11:40 UTC
  • mfrom: (3.1.2 sid)
  • Revision ID: package-import@ubuntu.com-20140512181140-w237r3vsah1tmybz
Tags: 2.2.1-1
* New upstream release.
* Refreshed d/patches.
* Removed eclipse-cdt-valgrind-remote package, all its functionality
  is now provided by eclipse-cdt-profiling-framework-remote.
* Added remove-license-feature.patch.
* Bump Standards-Version to 3.9.5.
* Enable eclipse-changelog package.
* Enable eclipse-rpm-editor package.

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systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/actions/TreeExpandCollapseAction.java
 
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/*******************************************************************************
 
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 * Copyright (c) 2006 IBM Corporation.
 
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 * All rights reserved. This program and the accompanying materials
 
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 * are made available under the terms of the Eclipse Public License v1.0
 
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 * which accompanies this distribution, and is available at
 
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 * http://www.eclipse.org/legal/epl-v10.html
 
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 *
 
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 * Contributors:
 
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 *     IBM Corporation - Jeff Briggs, Henry Hughes, Ryan Morse
 
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 *******************************************************************************/
 
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package org.eclipse.linuxtools.internal.systemtap.ui.ide.actions;
 
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import org.eclipse.jface.action.Action;
 
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import org.eclipse.jface.viewers.ISelection;
 
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import org.eclipse.jface.viewers.IStructuredSelection;
 
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import org.eclipse.linuxtools.internal.systemtap.ui.ide.views.BrowserView;
 
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import org.eclipse.ui.ISelectionListener;
 
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import org.eclipse.ui.IWorkbenchPart;
 
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import org.eclipse.ui.IWorkbenchWindow;
 
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import org.eclipse.ui.PlatformUI;
 
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/**
 
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 * This <code>Action</code> expands or collapses the Viewer to the level of the element that the
 
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 * user selected.
 
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 * @author Henry Hughes
 
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 * @author Ryan Morse
 
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 */
 
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public class TreeExpandCollapseAction extends Action implements
 
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                ISelectionListener {
 
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        private final IWorkbenchWindow fWindow;
 
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        private IStructuredSelection selection;
 
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        private final BrowserView viewer;
 
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        /**
 
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         * The default constructor. Takes a <code>Class</code> representing the viewer that it is to expand
 
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         * or collapse, as there is only one in the workbench at a time.
 
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         * @param cls   <code>Class</code> of the viewer to expand/collapse
 
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         */
 
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        public TreeExpandCollapseAction(BrowserView view) {
 
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                super();
 
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                fWindow = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
 
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                fWindow.getSelectionService().addSelectionListener(this);
 
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                this.viewer = view;
 
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        }
 
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        /**
 
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         * Updates <code>selection</code> with the current selection whenever the user changes
 
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         * the current selection.
 
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         */
 
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        @Override
 
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        public void selectionChanged(IWorkbenchPart part, ISelection incoming) {
 
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                if (incoming instanceof IStructuredSelection) {
 
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                        selection = (IStructuredSelection) incoming;
 
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                        setEnabled(selection.size() == 1);
 
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                } else {
 
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                        // Other selections, for example containing text or of other kinds.
 
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                        setEnabled(false);
 
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                }
 
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        }
 
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        public void dispose() {
 
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                fWindow.getSelectionService().removeSelectionListener(this);
 
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        }
 
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        /**
 
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         * The main body of the action. Expands or Collapses the viewer specified at construction to
 
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         * the level of the current selection.
 
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         */
 
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        @Override
 
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        public void run() {
 
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                ISelection incoming = viewer.getViewer().getSelection();
 
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                IStructuredSelection selection = (IStructuredSelection)incoming;
 
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                Object o = selection.getFirstElement();
 
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                if(o == null) {
 
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                        return;
 
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                }
 
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                Object[] objs = viewer.getViewer().getVisibleExpandedElements();
 
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                boolean doExpand = true;
 
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                for(int i = 0; i < objs.length; i++)
 
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                        if(objs[i] == o)
 
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                                doExpand = false;
 
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                if(doExpand) {
 
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                        viewer.getViewer().expandToLevel(o,1);
 
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                } else {
 
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                        viewer.getViewer().collapseToLevel(o,1);
 
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                }
 
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        }
 
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}