org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/views/histogram/HistogramTimeRangeControl.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.TmfTimestamp;
  25 import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimestampFormat;
  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     }
  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.getDefaulIntervalFormat().parseValue(string);
  68             if (value < 1) {
  69                 value = getValue();
  70             }
  71         } catch (ParseException e) {
  72         }
  73         if (getValue() != value) {
  74             fParentView.updateTimeRange(value);
  75         } else {
  76             setValue(value);
  77         }
  78     }
  79
  80     @Override
  81     public void setValue(long time) {
  82         if (time != Long.MIN_VALUE) {
  83             ITmfTimestamp ts = new TmfTimestamp(time, ITmfTimestamp.NANOSECOND_SCALE);
  84             super.setValue(time, ts.toString(TmfTimestampFormat.getDefaulIntervalFormat()));
  85         } else {
  86             super.setValue(time, ""); //$NON-NLS-1$
  87         }
  88     }
  89
  90     // ------------------------------------------------------------------------
  91     // Signal Handlers
  92     // ------------------------------------------------------------------------
  93
  94     /**
  95      * Format the interval and update the display. Compute the new text size,
  96      * adjust the text and group widgets and then refresh the view layout.
  97      *
  98      * @param signal the incoming signal
  99      * @since 2.0
 100      */
 101     @TmfSignalHandler
 102     public void intervalFormatUpdated(TmfTimestampFormatUpdateSignal signal) {
 103         setValue(getValue());
 104     }
 105
 106 }