ctf: Handle traces with unknown event attributes

[deliverable/tracecompass.git] / org.eclipse.linuxtools.tmf.ui / src / org / eclipse / linuxtools / tmf / ui / widgets / timegraph / widgets / TimeGraphSelection.java

/*****************************************************************************\r
 * Copyright (c) 2007 Intel Corporation, 2009, 2012 Ericsson.\r
 * All rights reserved. This program and the accompanying materials\r
 * are made available under the terms of the Eclipse Public License v1.0\r
 * which accompanies this distribution, and is available at\r
 * http://www.eclipse.org/legal/epl-v10.html\r
 *\r
 * Contributors:\r
 *   Intel Corporation - Initial API and implementation\r
 *   Ruslan A. Scherbakov, Intel - Initial API and implementation\r
 *   Alvaro Sanchez-Leon - Updated for TMF\r
 *   Patrick Tasse - Refactoring\r
 *\r
 *****************************************************************************/\r
\r
package org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets;\r
\r
import java.util.ArrayList;\r
import java.util.Iterator;\r
import java.util.List;\r
\r
import org.eclipse.jface.viewers.IStructuredSelection;\r
\r
/**\r
 * Selection object for the time graph scale\r
 *\r
 * @version 1.0\r
 * @author Alvaro Sanchez-Leon\r
 * @author Patrick Tasse\r
 */\r
public class TimeGraphSelection implements IStructuredSelection {\r
\r
    List<Object> list = new ArrayList<Object>();\r
\r
    /**\r
     * Default constructor\r
     */\r
    public TimeGraphSelection() {\r
    }\r
\r
    /**\r
     * "Wrapper" constructor. Instantiate a new selection object with only one\r
     * existing selection.\r
     *\r
     * @param sel\r
     *            The initial selection to add to this one\r
     */\r
    public TimeGraphSelection(Object sel) {\r
        add(sel);\r
    }\r
\r
    /**\r
     * Add a selection to this one.\r
     *\r
     * @param sel\r
     *            The selection to add\r
     */\r
    public void add(Object sel) {\r
        if (null != sel && !list.contains(sel)) {\r
            list.add(sel);\r
        }\r
    }\r
\r
    @Override\r
    public Object getFirstElement() {\r
        if (!list.isEmpty()) {\r
            return list.get(0);\r
        }\r
        return null;\r
    }\r
\r
    @Override\r
    public Iterator<Object> iterator() {\r
        return list.iterator();\r
    }\r
\r
    @Override\r
    public int size() {\r
        return list.size();\r
    }\r
\r
    @Override\r
    public Object[] toArray() {\r
        return list.toArray();\r
    }\r
\r
    @Override\r
    public List<Object> toList() {\r
        return list;\r
    }\r
\r
    @Override\r
    public boolean isEmpty() {\r
        return list.isEmpty();\r
    }\r
}\r