Re-structure LTTng sub-project as per the Linux Tools guidelines

[deliverable/tracecompass.git] / org.eclipse.linuxtools.lttng.ui / src / org / eclipse / linuxtools / lttng / ui / views / histogram / HistogramRequest.java

/*******************************************************************************
 * Copyright (c) 2009, 2011 Ericsson
 * 
 * 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:
 *   William Bourque - Initial API and implementation
 *   Yuriy Vashchuk - Heritage correction.
 *   Francois Chouinard - Cleanup and refactoring
 *******************************************************************************/

package org.eclipse.linuxtools.lttng.ui.views.histogram;

import org.eclipse.linuxtools.lttng.core.LttngConstants;
import org.eclipse.linuxtools.lttng.core.event.LttngEvent;
import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest;
import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest;

/**
 * <b><u>HistogramRequest</u></b>
 * <p>
 */
public class HistogramRequest extends TmfEventRequest<LttngEvent> {

    // ------------------------------------------------------------------------
    // Attributes
    // ------------------------------------------------------------------------

    private final Histogram fHistogram;

    // ------------------------------------------------------------------------
    // Constructor
    // ------------------------------------------------------------------------

    public HistogramRequest(Histogram histogram, TmfTimeRange range, int rank, int nbEvents, ITmfDataRequest.ExecutionType execType) {
        super(LttngEvent.class, range, rank, nbEvents, LttngConstants.DEFAULT_BLOCK_SIZE, execType);
        fHistogram = histogram;
    }

    public HistogramRequest(Histogram histogram, TmfTimeRange range, ITmfDataRequest.ExecutionType execType) {
        this(histogram, range, 0, ALL_DATA, execType);
    }

    public HistogramRequest(Histogram histogram, TmfTimeRange range, int rank, ITmfDataRequest.ExecutionType execType) {
        this(histogram, range, rank, ALL_DATA, execType);
    }

    // ------------------------------------------------------------------------
    // TmfEventRequest
    // ------------------------------------------------------------------------

    @Override
    public void handleData(LttngEvent event) {
        super.handleData(event);
        if (event != null) {
            long timestamp = event.getTimestamp().getValue();
            fHistogram.countEvent(timestamp);
        }
    }

    @Override
    public void handleCompleted() {
        fHistogram.refresh();
        super.handleCompleted();
    }

    @Override
    public void handleCancel() {
        fHistogram.refresh();
        super.handleCancel();
    }

}