tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/views/histogram/HistogramCurrentTimeControl.java

   1 /*******************************************************************************
   2  * Copyright (c) 2011, 2014 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Francois Chouinard - Initial API and implementation
  11  *   Francois Chouinard - Moved from LTTng to TMF
  12  *   Francois Chouinard - Simplified constructor, handle interval format change
  13  *   Patrick Tasse - Update value handling
  14  *******************************************************************************/
  15
  16 package org.eclipse.tracecompass.tmf.ui.views.histogram;
  17
  18 import java.text.ParseException;
  19
  20 import org.eclipse.swt.widgets.Composite;
  21 import org.eclipse.tracecompass.tmf.core.signal.TmfSignalHandler;
  22 import org.eclipse.tracecompass.tmf.core.signal.TmfTimestampFormatUpdateSignal;
  23 import org.eclipse.tracecompass.tmf.core.timestamp.ITmfTimestamp;
  24 import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimeRange;
  25 import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimestamp;
  26 import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimestampFormat;
  27 import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace;
  28
  29 /**
  30  * This control provides a group containing a text control.
  31  *
  32  * @author Francois Chouinard
  33  */
  34 public class HistogramCurrentTimeControl extends HistogramTextControl {
  35
  36     // ------------------------------------------------------------------------
  37     // Construction
  38     // ------------------------------------------------------------------------
  39
  40     /**
  41      * Standard constructor
  42      *
  43      * @param parentView A parent histogram view
  44      * @param parent A parent composite to draw in
  45      * @param label A label
  46      * @param value A value
  47      */
  48     public HistogramCurrentTimeControl(HistogramView parentView, Composite parent,
  49             String label, long value)
  50     {
  51         super(parentView, parent, label, value);
  52     }
  53
  54     // ------------------------------------------------------------------------
  55     // Operations
  56     // ------------------------------------------------------------------------
  57
  58     @Override
  59     protected void updateValue() {
  60         if (getValue() == Long.MIN_VALUE) {
  61             fTextValue.setText(""); //$NON-NLS-1$
  62             return;
  63         }
  64         String string = fTextValue.getText();
  65         long value = getValue();
  66         try {
  67             value = TmfTimestampFormat.getDefaulTimeFormat().parseValue(string, getValue());
  68         } catch (ParseException e) {
  69         }
  70         if (getValue() != value) {
  71             // Make sure that the new time is within range
  72             ITmfTrace trace = fParentView.getTrace();
  73             if (trace != null) {
  74                 TmfTimeRange range = trace.getTimeRange();
  75                 long startTime = range.getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
  76                 long endTime = range.getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
  77                 if (value < startTime) {
  78                     value = startTime;
  79                 } else if (value > endTime) {
  80                     value = endTime;
  81                 }
  82             }
  83
  84             // Set and propagate
  85             setValue(value);
  86             updateSelectionTime(value);
  87         } else {
  88             setValue(value);
  89         }
  90     }
  91
  92     /**
  93      * Update the selection time
  94      *
  95      * @param time
  96      *            the new selected time
  97      */
  98     protected void updateSelectionTime(long time) {
  99         fParentView.updateSelectionTime(time, time);
 100     }
 101
 102     @Override
 103     public void setValue(long time) {
 104         if (time != Long.MIN_VALUE) {
 105             super.setValue(time, new TmfTimestamp(time, ITmfTimestamp.NANOSECOND_SCALE).toString());
 106         } else {
 107             super.setValue(time, ""); //$NON-NLS-1$
 108         }
 109     }
 110
 111     // ------------------------------------------------------------------------
 112     // Signal Handlers
 113     // ------------------------------------------------------------------------
 114
 115     /**
 116      * Format the timestamp and update the display. Compute the new text size,
 117      * adjust the text and group widgets and then refresh the view layout.
 118      *
 119      * @param signal the incoming signal
 120      */
 121     @TmfSignalHandler
 122     public void timestampFormatUpdated(TmfTimestampFormatUpdateSignal signal) {
 123         setValue(getValue());
 124     }
 125
 126 }