org.eclipse.emf.ecp.spi.common.ui.TreeViewerFactory.java Source code

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Here is the source code for org.eclipse.emf.ecp.spi.common.ui.TreeViewerFactory.java

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/*******************************************************************************
 * Copyright (c) 2011-2012 EclipseSource Muenchen GmbH and others.
 *
 * 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
 *
 * Contributors:
 * Eugen Neufeld - initial API and implementation
 *
 *******************************************************************************/

package org.eclipse.emf.ecp.spi.common.ui;

import org.eclipse.jface.viewers.CheckboxTreeViewer;
import org.eclipse.jface.viewers.DecoratingLabelProvider;
import org.eclipse.jface.viewers.ILabelDecorator;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;

/**
 * @author Eugen Neufeld
 */
public final class TreeViewerFactory {
    private TreeViewerFactory() {
    }

    public static TreeViewer createTreeViewer(Composite parent, ILabelProvider labelProvider,
            ITreeContentProvider contentProvider, Object input, ILabelDecorator labelDecorator, boolean sort) {
        final TreeViewer viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
        createTreeViewer(labelProvider, contentProvider, input, labelDecorator, viewer, sort);
        return viewer;
    }

    public static TreeViewer createCheckedTreeViewer(Composite parent, ILabelProvider labelProvider,
            ITreeContentProvider contentProvider, Object input, ILabelDecorator labelDecorator, boolean sort) {
        final CheckboxTreeViewer viewer = new CheckboxTreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
        createTreeViewer(labelProvider, contentProvider, input, labelDecorator, viewer, sort);
        return viewer;
    }

    /**
     * @param labelProvider
     * @param contentProvider
     * @param input
     * @param labelDecorator
     * @param viewer
     */
    private static void createTreeViewer(ILabelProvider labelProvider, ITreeContentProvider contentProvider,
            Object input, ILabelDecorator labelDecorator, TreeViewer viewer, boolean sort) {
        viewer.setContentProvider(contentProvider);
        viewer.setLabelProvider(labelProvider);
        if (sort) {
            viewer.setSorter(new ViewerSorter());
        }
        viewer.setInput(input);

        if (labelDecorator != null) {
            if (!(labelProvider instanceof DecoratingLabelProvider)) {
                viewer.setLabelProvider(new DecoratingLabelProvider(labelProvider, labelDecorator));
            }
        }
    }
}