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

   1 /*******************************************************************************
   2  * Copyright (c) 2011, 2013 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  *******************************************************************************/
  14
  15 package org.eclipse.linuxtools.tmf.ui.views.histogram;
  16
  17 import java.text.ParseException;
  18
  19 import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler;
  20 import org.eclipse.linuxtools.tmf.core.signal.TmfSignalManager;
  21 import org.eclipse.linuxtools.tmf.core.signal.TmfTimestampFormatUpdateSignal;
  22 import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp;
  23 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp;
  24 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestampFormat;
  25 import org.eclipse.swt.widgets.Composite;
  26
  27 /**
  28  * This control provides a group containing a text control.
  29  *
  30  * @version 2.0
  31  * @author Francois Chouinard
  32  */
  33 public class HistogramTimeRangeControl extends HistogramTextControl {
  34
  35     // ------------------------------------------------------------------------
  36     // Construction
  37     // ------------------------------------------------------------------------
  38
  39     /**
  40      * Constructor with given group and text values.
  41      *
  42      * @param parentView The parent histogram view.
  43      * @param parent The parent composite
  44      * @param groupLabel A group value
  45      * @param value A text value
  46      * @since 2.0
  47      */
  48     public HistogramTimeRangeControl(HistogramView parentView, Composite parent,
  49             String groupLabel, long value)
  50     {
  51         super(parentView, parent, groupLabel, value);
  52         TmfSignalManager.register(this);
  53     }
  54
  55     @Override
  56     public void dispose() {
  57         TmfSignalManager.deregister(this);
  58     }
  59
  60     // ------------------------------------------------------------------------
  61     // Operations
  62     // ------------------------------------------------------------------------
  63
  64     @Override
  65     protected void updateValue() {
  66         if (getValue() == Long.MIN_VALUE) {
  67             fTextValue.setText(""); //$NON-NLS-1$
  68             return;
  69         }
  70         String string = fTextValue.getText();
  71         long value = getValue();
  72         try {
  73             value = TmfTimestampFormat.getDefaulIntervalFormat().parseValue(string);
  74         } catch (ParseException e) {
  75         }
  76         fParentView.updateTimeRange(value);
  77     }
  78
  79     @Override
  80     public void setValue(long time) {
  81         if (time != Long.MIN_VALUE) {
  82             ITmfTimestamp ts = new TmfTimestamp(time, ITmfTimestamp.NANOSECOND_SCALE);
  83             super.setValue(time, ts.toString(TmfTimestampFormat.getDefaulIntervalFormat()));
  84         } else {
  85             super.setValue(time, ""); //$NON-NLS-1$
  86         }
  87     }
  88
  89     // ------------------------------------------------------------------------
  90     // Signal Handlers
  91     // ------------------------------------------------------------------------
  92
  93     /**
  94      * Format the interval and update the display. Compute the new text size,
  95      * adjust the text and group widgets and then refresh the view layout.
  96      *
  97      * @param signal the incoming signal
  98      * @since 2.0
  99      */
 100     @TmfSignalHandler
 101     public void intervalFormatUpdated(TmfTimestampFormatUpdateSignal signal) {
 102         setValue(getValue());
 103     }
 104
 105 }