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  *   Patrick Tasse - Update value handling
  14  *******************************************************************************/
  15
  16 package org.eclipse.linuxtools.tmf.ui.views.histogram;
  17
  18 import java.text.ParseException;
  19
  20 import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler;
  21 import org.eclipse.linuxtools.tmf.core.signal.TmfSignalManager;
  22 import org.eclipse.linuxtools.tmf.core.signal.TmfTimestampFormatUpdateSignal;
  23 import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp;
  24 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp;
  25 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestampFormat;
  26 import org.eclipse.swt.widgets.Composite;
  27
  28 /**
  29  * This control provides a group containing a text control.
  30  *
  31  * @version 2.0
  32  * @author Francois Chouinard
  33  */
  34 public class HistogramTimeRangeControl extends HistogramTextControl {
  35
  36     // ------------------------------------------------------------------------
  37     // Construction
  38     // ------------------------------------------------------------------------
  39
  40     /**
  41      * Constructor with given group and text values.
  42      *
  43      * @param parentView The parent histogram view.
  44      * @param parent The parent composite
  45      * @param groupLabel A group value
  46      * @param value A text value
  47      * @since 2.0
  48      */
  49     public HistogramTimeRangeControl(HistogramView parentView, Composite parent,
  50             String groupLabel, long value)
  51     {
  52         super(parentView, parent, groupLabel, value);
  53         TmfSignalManager.register(this);
  54     }
  55
  56     @Override
  57     public void dispose() {
  58         TmfSignalManager.deregister(this);
  59     }
  60
  61     // ------------------------------------------------------------------------
  62     // Operations
  63     // ------------------------------------------------------------------------
  64
  65     @Override
  66     protected void updateValue() {
  67         if (getValue() == Long.MIN_VALUE) {
  68             fTextValue.setText(""); //$NON-NLS-1$
  69             return;
  70         }
  71         String string = fTextValue.getText();
  72         long value = getValue();
  73         try {
  74             value = TmfTimestampFormat.getDefaulIntervalFormat().parseValue(string);
  75         } catch (ParseException e) {
  76         }
  77         if (getValue() != value) {
  78             fParentView.updateTimeRange(value);
  79         } else {
  80             setValue(value);
  81         }
  82     }
  83
  84     @Override
  85     public void setValue(long time) {
  86         if (time != Long.MIN_VALUE) {
  87             ITmfTimestamp ts = new TmfTimestamp(time, ITmfTimestamp.NANOSECOND_SCALE);
  88             super.setValue(time, ts.toString(TmfTimestampFormat.getDefaulIntervalFormat()));
  89         } else {
  90             super.setValue(time, ""); //$NON-NLS-1$
  91         }
  92     }
  93
  94     // ------------------------------------------------------------------------
  95     // Signal Handlers
  96     // ------------------------------------------------------------------------
  97
  98     /**
  99      * Format the interval and update the display. Compute the new text size,
 100      * adjust the text and group widgets and then refresh the view layout.
 101      *
 102      * @param signal the incoming signal
 103      * @since 2.0
 104      */
 105     @TmfSignalHandler
 106     public void intervalFormatUpdated(TmfTimestampFormatUpdateSignal signal) {
 107         setValue(getValue());
 108     }
 109
 110 }