com.astra.ses.spell.gui.model.callstack.CallstackLabelProvider.java Source code

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///////////////////////////////////////////////////////////////////////////////
//
// PACKAGE   : com.astra.ses.spell.gui.model.callstack
// 
// FILE      : CallstackLabelProvider.java
//
// DATE      : 2008-11-21 08:55
//
// Copyright (C) 2008, 2012 SES ENGINEERING, Luxembourg S.A.R.L.
//
// By using this software in any way, you are agreeing to be bound by
// the terms of this license.
//
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// which accompanies this distribution, and is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// NO WARRANTY
// EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED
// ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER
// EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR
// CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
// PARTICULAR PURPOSE. Each Recipient is solely responsible for determining
// the appropriateness of using and distributing the Program and assumes all
// risks associated with its exercise of rights under this Agreement ,
// including but not limited to the risks and costs of program errors,
// compliance with applicable laws, damage to or loss of data, programs or
// equipment, and unavailability or interruption of operations.
//
// DISCLAIMER OF LIABILITY
// EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY
// CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION
// LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE
// EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGES.
//
// Contributors:
//    SES ENGINEERING - initial API and implementation and/or initial documentation
//
// PROJECT   : SPELL
//
// SUBPROJECT: SPELL GUI Client
//
///////////////////////////////////////////////////////////////////////////////
package com.astra.ses.spell.gui.model.callstack;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IColorProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;

import com.astra.ses.spell.gui.Activator;

/******************************************************************************
 * Provides the labels and icons for the callstack tree.
 *****************************************************************************/
public class CallstackLabelProvider extends LabelProvider implements IColorProvider {
    /** Holds the image for procedure nodes */
    private Image m_imgProc;
    /** Holds the image for call nodes */
    private Image m_imgLiveNode;
    /** Holds the image for a finished node */
    private Image m_imgFinishedNode;
    /** Finished nodes foreground color */
    private Color m_finishedColor;

    /**************************************************************************
     * Constructor.
     *************************************************************************/
    public CallstackLabelProvider() {
        ImageDescriptor descr = Activator.getImageDescriptor("icons/16x16/procedure.jpg");
        m_imgProc = descr.createImage();
        descr = Activator.getImageDescriptor("icons/16x16/liveExecutionNode.png");
        m_imgLiveNode = descr.createImage();
        descr = Activator.getImageDescriptor("icons/16x16/finishedExecutionNode.png");
        m_imgFinishedNode = descr.createImage();

        m_finishedColor = new Color(Display.getDefault(), 128, 128, 128);
    }

    /**************************************************************************
     * Obtain the text corresponding to the given element.
     *************************************************************************/
    @Override
    public String getText(Object obj) {
        return obj.toString();
    }

    /**************************************************************************
     * Obtain the image corresponding to the given element.
     *************************************************************************/
    @Override
    public Image getImage(Object obj) {
        CallstackNode node = (CallstackNode) obj;
        Image result = null;
        switch (node.getType()) {
        case ROOT:
            result = m_imgProc;
            break;
        case EXECUTION:
            result = m_imgLiveNode;
            if (node.isFinished()) {
                result = m_imgFinishedNode;
            }
            break;
        default:
            String imageKey = ISharedImages.IMG_OBJ_ELEMENT;
            PlatformUI.getWorkbench().getSharedImages().getImage(imageKey);
            break;
        }
        return result;
    }

    /**************************************************************************
     * {@link IColorProvider} methods
     *************************************************************************/
    @Override
    public Color getForeground(Object element) {
        CallstackNode node = (CallstackNode) element;
        Color result = null;
        switch (node.getType()) {
        case EXECUTION:
            boolean finished = ((CallstackExecutionNode) node).isFinished();
            result = finished ? m_finishedColor : null;
            break;
        default:
            break;
        }
        return result;
    }

    @Override
    public Color getBackground(Object element) {
        return null;
    }

    /**************************************************************************
     * Disposal.
     *************************************************************************/
    @Override
    public void dispose() {
        m_imgProc.dispose();
        m_imgLiveNode.dispose();
        m_finishedColor.dispose();
    }
}