Internalize lttng.core APIs

[deliverable/tracecompass.git] / org.eclipse.linuxtools.lttng.ui / src / org / eclipse / linuxtools / lttng / ui / views / latency / HistogramViewer.java

/*******************************************************************************\r
 * Copyright (c) 2010, 2011 Ericsson\r
 * \r
 * All rights reserved. This program and the accompanying materials are\r
 * made available under the terms of the Eclipse Public License v1.0 which\r
 * accompanies this distribution, and is available at\r
 * http://www.eclipse.org/legal/epl-v10.html\r
 * \r
 * Contributors:\r
 *   Philippe Sawicki (INF4990.A2010@gmail.com)   - Initial API and implementation\r
 *   Mathieu Denis    (mathieu.denis55@gmail.com) - Refactored code\r
 *   Bernd Hufmann - Adapted to new model-view-controller design\r
 *******************************************************************************/\r
package org.eclipse.linuxtools.lttng.ui.views.latency;\r
\r
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.HistogramPaintListener;\r
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.TooltipListener;\r
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.ZoomListener;\r
import org.eclipse.linuxtools.tmf.ui.views.histogram.HistogramDataModel;\r
import org.eclipse.linuxtools.tmf.ui.views.histogram.IHistogramDataModel;\r
import org.eclipse.linuxtools.tmf.ui.views.histogram.IHistogramModelListener;\r
import org.eclipse.swt.SWT;\r
import org.eclipse.swt.widgets.Composite;\r
\r
/**\r
 * <b><u>HistogramViewer</u></b>\r
 * <p>\r
 * \r
 * Histogram viewer.\r
 * \r
 * @author Philippe Sawicki\r
 */\r
public class HistogramViewer extends AbstractViewer implements IHistogramModelListener {\r
\r
    // ------------------------------------------------------------------------\r
    // Attributes\r
    // ------------------------------------------------------------------------\r
\r
	/**\r
	 * Usable width for data plotting.\r
	 */\r
	protected int fUsableWidth;\r
\r
	/**\r
	 * Latency histogram model.\r
	 */\r
	private HistogramDataModel fModel;\r
\r
    // ------------------------------------------------------------------------\r
    // Constructors\r
    // ------------------------------------------------------------------------\r
\r
	/**\r
	 * Constructor.\r
	 * @param parent The parent composite node.\r
	 * @param style The SWT style to use to render the view.\r
	 */\r
	public HistogramViewer(Composite parent, int style) {\r
		super(parent, style);\r
		\r
		// Register the paint listener\r
		fPaintListener = new HistogramPaintListener(this);\r
		addPaintListener(fPaintListener);\r
		\r
		// Register the zoom listener\r
		fZoomListener = new ZoomListener(this);\r
		addListener(SWT.MouseWheel, fZoomListener);\r
		\r
		// Register the mouse click listener\r
		fMouseTraceListener = new TooltipListener(this, (HistogramPaintListener)fPaintListener);\r
		addMouseTrackListener(fMouseTraceListener);\r
		\r
		fModel = new HistogramDataModel();\r
		fModel.addHistogramListener(this);\r
	}\r
\r
    // ------------------------------------------------------------------------\r
    // Operations\r
    // ------------------------------------------------------------------------\r
\r
	/*\r
	 * (non-Javadoc)\r
	 * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#dispose()\r
	 */\r
	@Override\r
	public void dispose() {\r
	    fModel.removeHistogramListener(this);\r
	    fPaintListener.dispose();\r
	    super.dispose();\r
	}\r
\r
	/*\r
	 * (non-Javadoc)\r
	 * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#clear()\r
	 */\r
	@Override\r
	public void clear() {\r
		fPaintListener.clear();\r
	}\r
\r
	/*\r
	 * (non-Javadoc)\r
	 * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#clearBackground()\r
	 */\r
	@Override\r
	public void clearBackground() {\r
		fPaintListener.clear();\r
	}\r
\r
	/*\r
	 * (non-Javadoc)\r
	 * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#increaseBarWidth()\r
	 */\r
	@Override\r
    public void increaseBarWidth() {\r
	    fPaintListener.increaseBarWitdh();\r
	    modelUpdated();\r
	}\r
\r
	/*\r
	 * (non-Javadoc)\r
	 * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#decreaseBarWidth()\r
	 */\r
	@Override\r
    public void decreaseBarWidth() {\r
	    fPaintListener.decreaseBarWitdh();\r
	    modelUpdated();\r
	}\r
\r
	/*\r
	 * (non-Javadoc)\r
	 * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#getModel()\r
	 */\r
	@Override\r
    public IHistogramDataModel getModel() {\r
        return fModel;\r
    }\r
\r
	/*\r
	 * (non-Javadoc)\r
	 * @see org.eclipse.linuxtools.lttng.ui.views.histogram.IHistogramModelListener#modelUpdated()\r
	 */\r
    @Override\r
    public void modelUpdated() {\r
        \r
        if (!isDisposed() && getDisplay() != null) {\r
            getDisplay().asyncExec(new Runnable() {\r
                @Override\r
                public void run() {\r
                    if (!isDisposed()) {\r
                        redraw();\r
                    }\r
                }\r
            });\r
        }\r
    }\r
}