distributed.plugin.ui.view.OverviewOutlinePage.java Source code

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Here is the source code for distributed.plugin.ui.view.OverviewOutlinePage.java

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/*******************************************************************************
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     DisJ Development Group
 *******************************************************************************/

package distributed.plugin.ui.view;

import org.eclipse.draw2d.LightweightSystem;
import org.eclipse.draw2d.MarginBorder;
import org.eclipse.draw2d.Viewport;
import org.eclipse.draw2d.parts.ScrollableThumbnail;
import org.eclipse.draw2d.parts.Thumbnail;
import org.eclipse.gef.EditPartViewer;
import org.eclipse.gef.LayerConstants;
import org.eclipse.gef.RootEditPart;
import org.eclipse.gef.editparts.ScalableFreeformRootEditPart;
import org.eclipse.gef.ui.parts.ContentOutlinePage;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

/**
 * @author Me
 * 
 * TODO To change the template for this generated type comment go to Window -
 * Preferences - Java - Code Style - Code Templates
 */
public class OverviewOutlinePage extends ContentOutlinePage {

    private Canvas overview;

    private Thumbnail thumbnail;

    /**
     * 
     */
    public OverviewOutlinePage(EditPartViewer rootEditPart) {
        super(rootEditPart);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.part.IPage#createControl(org.eclipse.swt.widgets.Composite)
     */
    public void createControl(Composite parent) {

        // create canvas and lightweight system
        this.overview = new Canvas(parent, SWT.NONE);
        LightweightSystem lws = new LightweightSystem(overview);

        // create thumbnail
        RootEditPart rep = this.getViewer().getRootEditPart();
        if (rep instanceof ScalableFreeformRootEditPart) {
            ScalableFreeformRootEditPart root = (ScalableFreeformRootEditPart) rep;
            thumbnail = new ScrollableThumbnail((Viewport) root.getFigure());
            thumbnail.setBorder(new MarginBorder(3));
            thumbnail.setSource(root.getLayer(LayerConstants.PRINTABLE_LAYERS));
            lws.setContents(thumbnail);
        }

    }

    /**
     * @see org.eclipse.ui.part.IPage#dispose()
     */
    public void dispose() {
        if (null != thumbnail)
            thumbnail.deactivate();
        super.dispose();
    }

    /**
     * @see org.eclipse.ui.part.IPage#getControl()
     */
    public Control getControl() {
        return this.overview;
    }

    public void setContents(Object contents) {
        getViewer().setContents(contents);
    }

    /**
     * @see org.eclipse.ui.part.IPage#setFocus()
     */
    public void setFocus() {
        if (getControl() != null)
            getControl().setFocus();
    }

    /**
     * @see org.eclipse.jface.viewers.ISelectionProvider#addSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener)
     */
    public void addSelectionChangedListener(ISelectionChangedListener listener) {
        // not support
    }

    /**
     * @see org.eclipse.jface.viewers.ISelectionProvider#getSelection()
     */
    public ISelection getSelection() {
        return StructuredSelection.EMPTY;
    }

    /**
     * @see org.eclipse.jface.viewers.ISelectionProvider#removeSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener)
     */
    public void removeSelectionChangedListener(ISelectionChangedListener listener) {
        // not support
    }

    /**
     * @see org.eclipse.jface.viewers.ISelectionProvider#setSelection(org.eclipse.jface.viewers.ISelection)
     */
    public void setSelection(ISelection selection) {
        // not support
    }

}