bundles/org.eclipse.emf.emfstore.client.ui/src/org/eclipse/emf/emfstore/internal/client/ui/views/historybrowserview/LogMessageColumnLabelProvider.java

/*******************************************************************************
 * Copyright (c) 2008-2011 Chair for Applied Software Engineering,
 * Technische Universitaet Muenchen.
 * 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:
 * shterev
 ******************************************************************************/
package org.eclipse.emf.emfstore.internal.client.ui.views.historybrowserview;

import org.eclipse.emf.emfstore.internal.client.ui.views.scm.SCMLabelProvider;
import org.eclipse.emf.emfstore.internal.server.model.versioning.HistoryInfo;
import org.eclipse.emf.emfstore.internal.server.model.versioning.LogMessage;
import org.eclipse.jface.viewers.TreeNode;
import org.eclipse.swt.graphics.Image;

/**
 * Column LabelProvider to show info from the log message, such as commiter, date, etc.
 *
 * @author shterev
 */
public class LogMessageColumnLabelProvider extends SCMLabelProvider {

	/**
	 * Default constructor.
	 */
	public LogMessageColumnLabelProvider() {
		super();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public String getText(Object element) {
		if (element instanceof TreeNode && !(((TreeNode) element).getValue() instanceof HistoryInfo)) {
			final String toolTipText = super.getToolTipText(element);
			return toolTipText;
		} else if (element instanceof HistoryInfo) {
			LogMessage logMessage = null;
			final HistoryInfo historyInfo = (HistoryInfo) element;
			final StringBuilder builder = new StringBuilder();
			if (historyInfo.getPrimarySpec() != null && historyInfo.getPrimarySpec().getIdentifier() == -1) {
				builder.append(""); //$NON-NLS-1$
			} else if (historyInfo.getLogMessage() != null) {
				logMessage = historyInfo.getLogMessage();
			} else if (historyInfo.getChangePackage() != null
				&& historyInfo.getChangePackage().getLogMessage() != null) {
				logMessage = historyInfo.getChangePackage().getLogMessage();
			}
			if (logMessage != null) {
				builder.append(logMessage.getMessage());
			}
			return builder.toString();
		}
		return null;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public Image getImage(Object element) {
		return null;
	}

	@Override
	public String getToolTipText(Object element) {
		return getText(element);
	}

}