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

   1 /*******************************************************************************
   2  * Copyright (c) 2011, 2012 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  *******************************************************************************/
  13
  14 package org.eclipse.linuxtools.tmf.ui.views.histogram;
  15
  16 import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
  17 import org.eclipse.linuxtools.tmf.core.trace.TmfExperiment;
  18 import org.eclipse.swt.widgets.Composite;
  19
  20 /**
  21  * This control provides a group containing a text control.
  22  *
  23  * @version 1.0
  24  * @author Francois Chouinard
  25  */
  26 public class HistogramCurrentTimeControl extends HistogramTextControl {
  27
  28     // ------------------------------------------------------------------------
  29     // Construction
  30     // ------------------------------------------------------------------------
  31
  32     /**
  33      * Constructor with default group and text value.
  34      *
  35      * @param parentView A parent histogram view
  36      * @param parent A parent composite to draw in
  37      * @param textStyle A test style
  38      * @param groupStyle A group style
  39      */
  40     public HistogramCurrentTimeControl(HistogramView parentView, Composite parent, int textStyle, int groupStyle) {
  41         this(parentView, parent, textStyle, groupStyle, "", HistogramUtils.nanosecondsToString(0L)); //$NON-NLS-1$
  42     }
  43
  44     /**
  45      *
  46      * Constructor
  47      * @param parentView A parent histogram view
  48      * @param parent A parent composite to draw in
  49      * @param textStyle A test style
  50      * @param groupStyle A group style
  51      * @param groupValue A group value
  52      * @param textValue A text value
  53      */
  54     public HistogramCurrentTimeControl(HistogramView parentView, Composite parent, int textStyle, int groupStyle, String groupValue, String textValue) {
  55         super(parentView, parent, textStyle, groupStyle, groupValue, textValue);
  56     }
  57
  58     // ------------------------------------------------------------------------
  59     // Operations
  60     // ------------------------------------------------------------------------
  61
  62     @Override
  63     protected void updateValue() {
  64         String stringValue = fTextValue.getText();
  65         long value = HistogramUtils.stringToNanoseconds(stringValue);
  66
  67         if (getValue() != value) {
  68             // Make sure that the new time is within range
  69             TmfExperiment exp = TmfExperiment.getCurrentExperiment();
  70             if (exp != null) {
  71                 TmfTimeRange range = exp.getTimeRange();
  72                 long startTime = range.getStartTime().normalize(0, -9).getValue();
  73                 long endTime = range.getEndTime().normalize(0, -9).getValue();
  74                 if (value < startTime) {
  75                     value = startTime;
  76                 } else if (value > endTime) {
  77                     value = endTime;
  78                 }
  79             }
  80
  81             // Set and propagate
  82             setValue(value);
  83             fParentView.updateCurrentEventTime(value);
  84         }
  85     }
  86
  87 }