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/*******************************************************************************
* Copyright (c) 2011, 2012 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:
* Francois Chouinard - Initial API and implementation
* Francois Chouinard - Moved from LTTng to TMF
* Francois Chouinard - Simplified constructor, handle interval format change
*******************************************************************************/
package org.eclipse.linuxtools.tmf.ui.views.histogram;
import java.text.ParseException;
import org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp;
import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp;
import org.eclipse.linuxtools.tmf.core.event.TmfTimestampFormat;
import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler;
import org.eclipse.linuxtools.tmf.core.signal.TmfSignalManager;
import org.eclipse.linuxtools.tmf.core.signal.TmfTimestampFormatUpdateSignal;
import org.eclipse.linuxtools.tmf.core.signal.TmfTraceUpdatedSignal;
import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
import org.eclipse.swt.widgets.Composite;
/**
* This control provides a group containing a text control.
*
* @version 1.1
* @author Francois Chouinard
*/
public class HistogramCurrentTimeControl extends HistogramTextControl {
// ------------------------------------------------------------------------
// Attributes
// ------------------------------------------------------------------------
private long fTraceStartTime;
// ------------------------------------------------------------------------
// Construction
// ------------------------------------------------------------------------
/**
* Standard constructor
*
* @param parentView A parent histogram view
* @param parent A parent composite to draw in
* @param groupLabel A group value
* @param value A value
* @since 2.0
*/
public HistogramCurrentTimeControl(HistogramView parentView, Composite parent,
String groupLabel, long value)
{
super(parentView, parent, groupLabel, value);
TmfSignalManager.register(this);
}
/* (non-Javadoc)
* @see org.eclipse.linuxtools.tmf.ui.views.histogram.HistogramTextControl#dispose()
*/
@Override
public void dispose() {
TmfSignalManager.deregister(this);
}
// ------------------------------------------------------------------------
// Operations
// ------------------------------------------------------------------------
@Override
protected void updateValue() {
String string = fTextValue.getText();
long value = 0;
try {
value = TmfTimestampFormat.getDefaulTimeFormat().parseValue(string, getValue());
} catch (ParseException e) {
}
if (getValue() != value) {
// Make sure that the new time is within range
ITmfTrace trace = fParentView.getTrace();
if (trace != null) {
TmfTimeRange range = trace.getTimeRange();
long startTime = range.getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
long endTime = range.getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
if (value < startTime) {
value = startTime;
} else if (value > endTime) {
value = endTime;
}
}
// Set and propagate
setValue(value);
fParentView.updateCurrentEventTime(value);
}
}
@Override
public void setValue(long time) {
super.setValue(time, new TmfTimestamp(time, ITmfTimestamp.NANOSECOND_SCALE).toString());
}
// ------------------------------------------------------------------------
// Signal Handlers
// ------------------------------------------------------------------------
/**
* Update the initial time value
*
* @param signal the time range signal
* @since 2.0
*/
@TmfSignalHandler
public void traceUpdated(final TmfTraceUpdatedSignal signal) {
fTraceStartTime = signal.getTrace().getTimeRange().getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
}
// ------------------------------------------------------------------------
// Signal Handlers
// ------------------------------------------------------------------------
/**
* Format the timestamp and update the display. Compute the new text size,
* adjust the text and group widgets and then refresh the view layout.
*
* @param signal the incoming signal
* @since 2.0
*/
@TmfSignalHandler
public void timestampFormatUpdated(TmfTimestampFormatUpdateSignal signal) {
setValue(getValue());
}
}
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