org.modelversioning.emfprofile.application.registry.ui.observer.ViewerState.java Source code

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Here is the source code for org.modelversioning.emfprofile.application.registry.ui.observer.ViewerState.java

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/**
 * Copyright (c) 2012 modelversioning.org
 * 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
 */
package org.modelversioning.emfprofile.application.registry.ui.observer;

import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.TreeViewer;

/**
 * @author <a href="mailto:becirb@gmail.com">Becir Basic</a>
 *
 */
public final class ViewerState {

    private final Object input;

    public final Object getInput() {
        return input;
    }

    private final Object[] viewerExpandedElements;
    private final ISelection selection;

    public ViewerState(TreeViewer viewer) {
        super();
        this.input = viewer.getInput();
        this.viewerExpandedElements = viewer.getExpandedElements();
        this.selection = viewer.getSelection();
    }

    public void restoreTreeViewerState(TreeViewer viewer) {
        viewer.setInput(input);
        viewer.setExpandedElements(viewerExpandedElements);
        viewer.setSelection(selection, true);
    }
}