org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/TmfEventsView.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 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  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.ui.views;
  14
  15 import org.eclipse.linuxtools.tmf.event.TmfEvent;
  16 import org.eclipse.linuxtools.tmf.event.TmfTimestamp;
  17 import org.eclipse.linuxtools.tmf.request.TmfDataRequest;
  18 import org.eclipse.linuxtools.tmf.signal.TmfSignalHandler;
  19 import org.eclipse.linuxtools.tmf.signal.TmfSignalManager;
  20 import org.eclipse.linuxtools.tmf.signal.TmfTimeSynchSignal;
  21 import org.eclipse.linuxtools.tmf.trace.TmfExperiment;
  22 import org.eclipse.linuxtools.tmf.trace.TmfExperimentSelectedSignal;
  23 import org.eclipse.linuxtools.tmf.trace.TmfTraceUpdatedSignal;
  24 import org.eclipse.swt.SWT;
  25 import org.eclipse.swt.events.SelectionEvent;
  26 import org.eclipse.swt.events.SelectionListener;
  27 import org.eclipse.swt.layout.GridData;
  28 import org.eclipse.swt.widgets.Composite;
  29 import org.eclipse.swt.widgets.Event;
  30 import org.eclipse.swt.widgets.Listener;
  31 import org.eclipse.swt.widgets.Table;
  32 import org.eclipse.swt.widgets.TableColumn;
  33 import org.eclipse.swt.widgets.TableItem;
  34
  35 /**
  36  * <b><u>TmfEventsView</u></b>
  37  * <p>
  38  *
  39  * TODO: Implement me. Please.
  40  * TODO: Handle column selection, sort, ... generically (nothing less...)
  41  * TODO: Implement hide/display columns
  42  */
  43 public class TmfEventsView extends TmfView {
  44
  45     public static final String ID = "org.eclipse.linuxtools.tmf.ui.viewer.events";
  46
  47     private TmfExperiment fExperiment;
  48     private String fTitlePrefix;
  49
  50     // ========================================================================
  51     // Table data
  52     // ========================================================================
  53
  54     private Table fTable;
  55
  56     // Table column names
  57     private final String TIMESTAMP_COLUMN = "Timestamp";
  58     private final String SOURCE_COLUMN    = "Source";
  59     private final String TYPE_COLUMN      = "Type";
  60     private final String REFERENCE_COLUMN = "File";
  61     private final String CONTENT_COLUMN   = "Content";
  62     private final String[] columnProperties =  new String[] {
  63         TIMESTAMP_COLUMN,
  64         SOURCE_COLUMN,
  65         TYPE_COLUMN,
  66         REFERENCE_COLUMN,
  67         CONTENT_COLUMN
  68     };
  69
  70     // Column data
  71     private class ColumnData {
  72         public final String header;
  73         public final int    width;
  74         public final int    alignment;
  75
  76         public ColumnData(String h, int w, int a) {
  77             header = h;
  78             width = w;
  79             alignment = a;
  80         }
  81     };
  82
  83     private ColumnData[] columnData = new ColumnData[] {
  84         new ColumnData(columnProperties[0], 100, SWT.LEFT),
  85         new ColumnData(columnProperties[1], 100, SWT.LEFT),
  86         new ColumnData(columnProperties[2], 100, SWT.LEFT),
  87         new ColumnData(columnProperties[3], 100, SWT.LEFT),
  88         new ColumnData(columnProperties[4], 100, SWT.LEFT)
  89     };
  90
  91     // ========================================================================
  92     // Constructor
  93     // ========================================================================
  94
  95     public TmfEventsView() {
  96         super();
  97     }
  98
  99     /* (non-Javadoc)
 100      * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
 101      */
 102     @Override
 103         public void createPartControl(Composite parent) {
 104
 105         // Create a virtual table
 106         // TODO: change SINGLE to MULTI line selection and adjust the selection listener
 107         final int style = SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER | SWT.VIRTUAL;
 108         fTable = new Table(parent, style);
 109
 110         // Set the table layout
 111         GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, true);
 112         layoutData.horizontalSpan= columnData.length;
 113         fTable.setLayoutData(layoutData);
 114
 115         // Some cosmetic enhancements
 116         fTable.setHeaderVisible(true);
 117         fTable.setLinesVisible(true);
 118
 119         // Set the columns
 120         setColumnHeaders(fTable);
 121
 122         // Handle the table item requests
 123         fTable.addSelectionListener(new SelectionListener() {
 124
 125                         public void widgetDefaultSelected(SelectionEvent e) {
 126                                 // TODO Auto-generated method stub
 127                         }
 128
 129                         public void widgetSelected(SelectionEvent e) {
 130                                 // Get the timestamp string
 131                                 String time = fTable.getSelection()[0].getText();
 132
 133                                 // Compose a timestamp
 134                                 int pos = time.indexOf('.');
 135                                 String integer = time.substring(0, pos);
 136                                 String fraction = time.substring(pos + 1);
 137
 138                                 byte exponent = (byte) -fraction.length();
 139                                 String value = integer + fraction;
 140                                 TmfTimestamp ts = new TmfTimestamp(new Long(value), exponent);
 141
 142                                 // Generate the synchronization event
 143                                 TmfSignalManager.dispatchSignal(new TmfTimeSynchSignal(fTable, ts));
 144                         }
 145         });
 146
 147         // Handle the table item requests
 148         fTable.addListener(SWT.SetData, new Listener() {
 149                         public void handleEvent(Event event) {
 150                                 TableItem item = (TableItem) event.item;
 151                                 int index = fTable.indexOf(item);
 152                                 final TmfEvent[] evt = new TmfEvent[1];
 153                                 TmfDataRequest<TmfEvent> request = new TmfDataRequest<TmfEvent>(index, 0, 1) {
 154                                         @Override
 155                                         public void handleData() {
 156                                                 TmfEvent[] result = getData();
 157                                                 evt[0] = (result.length > 0) ? result[0] : null;
 158                                         }
 159                                 };
 160                                 fExperiment.processRequest(request, true);
 161                                 item.setText(extractItemFields(evt[0]));
 162                         }
 163         });
 164
 165         fTable.setItemCount(0);
 166         fTitlePrefix = getTitle();
 167     }
 168
 169         /**
 170          * @param table
 171          *
 172          * FIXME: Add support for column selection
 173          */
 174         protected void setColumnHeaders(Table table) {
 175         for (int i = 0; i < columnData.length; i++) {
 176             TableColumn column = new TableColumn(table, columnData[i].alignment, i);
 177             column.setText(columnData[i].header);
 178             column.setWidth(columnData[i].width);
 179         }
 180         }
 181
 182         /**
 183          * @param event
 184          * @return
 185          *
 186          * FIXME: Add support for column selection
 187          */
 188         protected String[] extractItemFields(TmfEvent event) {
 189         String[] fields = new String[0];
 190         if (event != null) {
 191             fields = new String[] {
 192                                 new Long(event.getTimestamp().getValue()).toString(),
 193                                 event.getSource().getSourceId().toString(),
 194                                 event.getType().getTypeId().toString(),
 195                                 event.getReference().getValue().toString(),
 196                                 event.getContent().getContent()
 197             };
 198                 }
 199                 return fields;
 200         }
 201
 202     /* (non-Javadoc)
 203      * @see org.eclipse.ui.part.WorkbenchPart#setFocus()
 204      */
 205     @Override
 206         public void setFocus() {
 207     }
 208
 209     // ========================================================================
 210     // Signal handlers
 211     // ========================================================================
 212
 213         @TmfSignalHandler
 214     public void experimentSelected(TmfExperimentSelectedSignal signal) {
 215                 // Update the trace reference
 216                 if (fExperiment != null)
 217                         fExperiment.dispose();
 218         fExperiment = signal.getExperiment();
 219         setPartName(fTitlePrefix + " - " + fExperiment.getExperimentId());
 220
 221         // Perform the updates on the UI thread
 222         fTable.getDisplay().asyncExec(new Runnable() {
 223                 public void run() {
 224                 fTable.clearAll();
 225                 fTable.setItemCount(fExperiment.getNbEvents());
 226                 }
 227         });
 228     }
 229
 230         @TmfSignalHandler
 231     public void traceUpdated(TmfTraceUpdatedSignal signal) {
 232         // Perform the refresh on the UI thread
 233         fTable.getDisplay().asyncExec(new Runnable() {
 234                         public void run() {
 235                                 if (!fTable.isDisposed()) {
 236                                 fTable.setItemCount(fExperiment.getNbEvents());
 237                                 }
 238                         }
 239         });
 240     }
 241
 242     @TmfSignalHandler
 243     public void currentTimeUpdated(TmfTimeSynchSignal signal) {
 244         if (signal.getSource() != fTable) {
 245                 final int index = fExperiment.getIndex(signal.getCurrentTime());
 246             // Perform the updates on the UI thread
 247             fTable.getDisplay().asyncExec(new Runnable() {
 248                 public void run() {
 249                         fTable.setSelection(index);
 250                 }
 251             });
 252         }
 253     }
 254
 255 }