org.eclipse.emf.ecp.internal.ui.validation.ValidationTreeViewerFactory.java Source code

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Here is the source code for org.eclipse.emf.ecp.internal.ui.validation.ValidationTreeViewerFactory.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:
 * Johannes Faltermeier - initial API and implementation
 *
 *******************************************************************************/

package org.eclipse.emf.ecp.internal.ui.validation;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeColumn;

/**
 * Helper class for creating the tree viewer used for the validation view.
 *
 * @author jfaltermeier
 *
 */
public final class ValidationTreeViewerFactory {

    private ValidationTreeViewerFactory() {
        // util
    }

    /**
     * Creates a {@link TreeViewer} which is able to display validation results from
     * {@link org.eclipse.core.runtime.IStatus IStatus} objects.
     *
     * @param parent the parent of the viewer
     * @return the tree viewer
     */
    public static TreeViewer createValidationViewer(Composite parent) {
        final Tree validationTree = new Tree(parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
        validationTree.setHeaderVisible(true);
        validationTree.setLinesVisible(true);
        final TreeViewer treeViewer = new TreeViewer(validationTree);

        final TreeColumn messageColumn = new TreeColumn(validationTree, SWT.LEFT);
        messageColumn.setAlignment(SWT.LEFT);
        messageColumn.setText(Messages.ValidationTreeViewerFactory_Description);
        messageColumn.setWidth(600);

        final TreeColumn objectColumn = new TreeColumn(validationTree, SWT.LEFT);
        objectColumn.setAlignment(SWT.LEFT);
        objectColumn.setText(Messages.ValidationTreeViewerFactory_Object);
        objectColumn.setWidth(200);

        final TreeColumn featureColumn = new TreeColumn(validationTree, SWT.LEFT);
        featureColumn.setAlignment(SWT.LEFT);
        featureColumn.setText(Messages.ValidationTreeViewerFactory_Feature);
        featureColumn.setWidth(200);

        treeViewer.setContentProvider(new ValidationContentProvider());
        treeViewer.setLabelProvider(new ValidationLabelProvider());
        addDoubleClickListener(treeViewer);
        return treeViewer;
    }

    /**
     * @param treeViewer
     */
    private static void addDoubleClickListener(TreeViewer treeViewer) {
        IConfigurationElement[] doubleClickListener = Platform.getExtensionRegistry()
                .getConfigurationElementsFor("org.eclipse.emf.ecp.ui.validation.doubleClickListener"); //$NON-NLS-1$
        for (final IConfigurationElement element : doubleClickListener) {
            doubleClickListener = null;
            try {
                final IDoubleClickListener dcl = (IDoubleClickListener) element.createExecutableExtension("class"); //$NON-NLS-1$
                treeViewer.addDoubleClickListener(dcl);
            } catch (final CoreException e) {
            }
        }
    }

}