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

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 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  *   William Bourque - Initial API and implementation
  11  *   Yuriy Vashchuk - GUI reorganisation, simplification and some related code improvements.
  12  *   Yuriy Vashchuk - Histograms optimisation.
  13  *   Yuriy Vashchuk - Histogram Canvas Heritage correction
  14  *   Francois Chouinard - Cleanup and refactoring
  15  *   Francois Chouinard - Moved from LTTng to TMF
  16  *   Patrick Tasse - Update for mouse wheel zoom
  17  *******************************************************************************/
  18
  19 package org.eclipse.linuxtools.tmf.ui.views.histogram;
  20
  21 import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
  22 import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest.ExecutionType;
  23 import org.eclipse.linuxtools.tmf.core.request.TmfDataRequest;
  24 import org.eclipse.linuxtools.tmf.core.signal.TmfRangeSynchSignal;
  25 import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler;
  26 import org.eclipse.linuxtools.tmf.core.signal.TmfSignalThrottler;
  27 import org.eclipse.linuxtools.tmf.core.signal.TmfTimeSynchSignal;
  28 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceClosedSignal;
  29 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceOpenedSignal;
  30 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceRangeUpdatedSignal;
  31 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceSelectedSignal;
  32 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceUpdatedSignal;
  33 import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp;
  34 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimeRange;
  35 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp;
  36 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  37 import org.eclipse.linuxtools.tmf.ui.views.TmfView;
  38 import org.eclipse.swt.SWT;
  39 import org.eclipse.swt.events.MouseWheelListener;
  40 import org.eclipse.swt.layout.GridData;
  41 import org.eclipse.swt.layout.GridLayout;
  42 import org.eclipse.swt.widgets.Composite;
  43
  44 /**
  45  * The purpose of this view is to provide graphical time distribution statistics about the trace events.
  46  * <p>
  47  * The view is composed of two histograms and two controls:
  48  * <ul>
  49  * <li>an event distribution histogram for the whole trace;
  50  * <li>an event distribution histogram for current time window (window span);
  51  * <li>the timestamp of the currently selected event;
  52  * <li>the window span (size of the time window of the smaller histogram).
  53  * </ul>
  54  * The histograms x-axis show their respective time range.
  55  *
  56  * @version 2.0
  57  * @author Francois Chouinard
  58  */
  59 public class HistogramView extends TmfView {
  60
  61     // ------------------------------------------------------------------------
  62     // Constants
  63     // ------------------------------------------------------------------------
  64
  65     /**
  66      *  The view ID as defined in plugin.xml
  67      */
  68     public static final String ID = "org.eclipse.linuxtools.tmf.ui.views.histogram"; //$NON-NLS-1$
  69
  70     // ------------------------------------------------------------------------
  71     // Attributes
  72     // ------------------------------------------------------------------------
  73
  74     // Parent widget
  75     private Composite fParent;
  76
  77     // The current trace
  78     private ITmfTrace fTrace;
  79
  80     // Current timestamp/time window - everything in the TIME_SCALE
  81     private long fTraceStartTime;
  82     private long fTraceEndTime;
  83     private long fWindowStartTime;
  84     private long fWindowEndTime;
  85     private long fWindowSpan;
  86     private long fCurrentTimestamp;
  87
  88     // Time controls
  89     private HistogramTextControl fCurrentEventTimeControl;
  90     private HistogramTextControl fTimeSpanControl;
  91
  92     // Histogram/request for the full trace range
  93     private static FullTraceHistogram fFullTraceHistogram;
  94     private HistogramRequest fFullTraceRequest;
  95
  96     // Histogram/request for the selected time range
  97     private static TimeRangeHistogram fTimeRangeHistogram;
  98     private HistogramRequest fTimeRangeRequest;
  99
 100     // Throttlers for the time sync and time-range sync signals
 101     private final TmfSignalThrottler fTimeSyncThrottle;
 102     private final TmfSignalThrottler fTimeRangeSyncThrottle;
 103
 104     // ------------------------------------------------------------------------
 105     // Constructor
 106     // ------------------------------------------------------------------------
 107
 108     /**
 109      * Default constructor
 110      */
 111     public HistogramView() {
 112         super(ID);
 113         fTimeSyncThrottle = new TmfSignalThrottler(this, 200);
 114         fTimeRangeSyncThrottle = new TmfSignalThrottler(this, 200);
 115     }
 116
 117     @Override
 118     public void dispose() {
 119         if ((fTimeRangeRequest != null) && !fTimeRangeRequest.isCompleted()) {
 120             fTimeRangeRequest.cancel();
 121         }
 122         if ((fFullTraceRequest != null) && !fFullTraceRequest.isCompleted()) {
 123             fFullTraceRequest.cancel();
 124         }
 125         fFullTraceHistogram.dispose();
 126         fTimeRangeHistogram.dispose();
 127         fCurrentEventTimeControl.dispose();
 128         fTimeSpanControl.dispose();
 129         super.dispose();
 130     }
 131
 132     // ------------------------------------------------------------------------
 133     // TmfView
 134     // ------------------------------------------------------------------------
 135
 136     @Override
 137     public void createPartControl(Composite parent) {
 138
 139         fParent = parent;
 140
 141         // Control labels
 142         final String currentEventLabel = Messages.HistogramView_currentEventLabel;
 143         final String windowSpanLabel = Messages.HistogramView_windowSpanLabel;
 144
 145         // --------------------------------------------------------------------
 146         // Set the HistogramView layout
 147         // --------------------------------------------------------------------
 148
 149         Composite viewComposite = new Composite(fParent, SWT.FILL);
 150         GridLayout gridLayout = new GridLayout();
 151         gridLayout.numColumns = 2;
 152         gridLayout.horizontalSpacing = 5;
 153         gridLayout.verticalSpacing = 0;
 154         gridLayout.marginHeight = 0;
 155         gridLayout.marginWidth = 0;
 156         viewComposite.setLayout(gridLayout);
 157
 158         // Use all available space
 159         GridData gridData = new GridData();
 160         gridData.horizontalAlignment = SWT.FILL;
 161         gridData.verticalAlignment = SWT.FILL;
 162         gridData.grabExcessHorizontalSpace = true;
 163         viewComposite.setLayoutData(gridData);
 164
 165         // --------------------------------------------------------------------
 166         // Time controls
 167         // --------------------------------------------------------------------
 168
 169         Composite controlsComposite = new Composite(viewComposite, SWT.FILL);
 170         gridLayout = new GridLayout();
 171         gridLayout.numColumns = 2;
 172         gridLayout.marginHeight = 0;
 173         gridLayout.marginWidth = 0;
 174         gridLayout.horizontalSpacing = 5;
 175         gridLayout.verticalSpacing = 0;
 176         gridLayout.makeColumnsEqualWidth = false;
 177         gridLayout.marginLeft = 5;
 178         gridLayout.marginRight = 5;
 179         controlsComposite.setLayout(gridLayout);
 180
 181         // Current event time control
 182         gridData = new GridData();
 183         gridData.horizontalAlignment = SWT.CENTER;
 184         gridData.verticalAlignment = SWT.CENTER;
 185         fCurrentEventTimeControl = new HistogramCurrentTimeControl(this, controlsComposite, currentEventLabel, 0L);
 186         fCurrentEventTimeControl.setLayoutData(gridData);
 187         fCurrentEventTimeControl.setValue(Long.MIN_VALUE);
 188
 189         // Window span time control
 190         gridData = new GridData();
 191         gridData.horizontalAlignment = SWT.CENTER;
 192         gridData.verticalAlignment = SWT.CENTER;
 193         fTimeSpanControl = new HistogramTimeRangeControl(this, controlsComposite, windowSpanLabel, 0L);
 194         fTimeSpanControl.setLayoutData(gridData);
 195         fTimeSpanControl.setValue(Long.MIN_VALUE);
 196
 197         // --------------------------------------------------------------------
 198         // Time range histogram
 199         // --------------------------------------------------------------------
 200
 201         Composite timeRangeComposite = new Composite(viewComposite, SWT.FILL);
 202         gridLayout = new GridLayout();
 203         gridLayout.numColumns = 1;
 204         gridLayout.marginHeight = 0;
 205         gridLayout.marginWidth = 0;
 206         gridLayout.marginTop = 5;
 207         gridLayout.horizontalSpacing = 0;
 208         gridLayout.verticalSpacing = 0;
 209         gridLayout.marginLeft = 5;
 210         gridLayout.marginRight = 5;
 211         timeRangeComposite.setLayout(gridLayout);
 212
 213         // Use remaining horizontal space
 214         gridData = new GridData();
 215         gridData.horizontalAlignment = SWT.FILL;
 216         gridData.verticalAlignment = SWT.FILL;
 217         gridData.grabExcessHorizontalSpace = true;
 218         timeRangeComposite.setLayoutData(gridData);
 219
 220         // Histogram
 221         fTimeRangeHistogram = new TimeRangeHistogram(this, timeRangeComposite);
 222
 223         // --------------------------------------------------------------------
 224         // Full range histogram
 225         // --------------------------------------------------------------------
 226
 227         Composite fullRangeComposite = new Composite(viewComposite, SWT.FILL);
 228         gridLayout = new GridLayout();
 229         gridLayout.numColumns = 1;
 230         gridLayout.marginHeight = 0;
 231         gridLayout.marginWidth = 0;
 232         gridLayout.marginTop = 5;
 233         gridLayout.horizontalSpacing = 0;
 234         gridLayout.verticalSpacing = 0;
 235         gridLayout.marginLeft = 5;
 236         gridLayout.marginRight = 5;
 237         fullRangeComposite.setLayout(gridLayout);
 238
 239         // Use remaining horizontal space
 240         gridData = new GridData();
 241         gridData.horizontalAlignment = SWT.FILL;
 242         gridData.verticalAlignment = SWT.FILL;
 243         gridData.horizontalSpan = 2;
 244         gridData.grabExcessHorizontalSpace = true;
 245         fullRangeComposite.setLayoutData(gridData);
 246
 247         // Histogram
 248         fFullTraceHistogram = new FullTraceHistogram(this, fullRangeComposite);
 249
 250         // Add mouse wheel listener to time span control
 251         MouseWheelListener listener = fFullTraceHistogram.getZoom();
 252         fTimeSpanControl.addMouseWheelListener(listener);
 253
 254         ITmfTrace trace = getActiveTrace();
 255         if (trace != null) {
 256             traceSelected(new TmfTraceSelectedSignal(this, trace));
 257         }
 258     }
 259
 260     @Override
 261     public void setFocus() {
 262         fFullTraceHistogram.fCanvas.setFocus();
 263     }
 264
 265     void refresh() {
 266         fParent.layout(true);
 267     }
 268
 269     // ------------------------------------------------------------------------
 270     // Accessors
 271     // ------------------------------------------------------------------------
 272
 273     /**
 274      * Returns the current trace handled by the view
 275      *
 276      * @return the current trace
 277      * @since 2.0
 278      */
 279     public ITmfTrace getTrace() {
 280         return fTrace;
 281     }
 282
 283     /**
 284      * Returns the time range of the current selected window (base on default time scale).
 285      *
 286      * @return the time range of current selected window.
 287      * @since 2.0
 288      */
 289     public TmfTimeRange getTimeRange() {
 290         return new TmfTimeRange(
 291                 new TmfTimestamp(fWindowStartTime, ITmfTimestamp.NANOSECOND_SCALE),
 292                 new TmfTimestamp(fWindowEndTime, ITmfTimestamp.NANOSECOND_SCALE));
 293     }
 294
 295     // ------------------------------------------------------------------------
 296     // Operations
 297     // ------------------------------------------------------------------------
 298
 299     /**
 300      * Broadcast TmfSignal about new current time value.
 301      * @param newTime the new current time.
 302      */
 303     void updateCurrentEventTime(long newTime) {
 304         if (fTrace != null) {
 305             TmfTimeRange timeRange = new TmfTimeRange(new TmfTimestamp(newTime, ITmfTimestamp.NANOSECOND_SCALE), TmfTimestamp.BIG_CRUNCH);
 306             HistogramRequest request = new HistogramRequest(fTimeRangeHistogram.getDataModel(), timeRange, 0, 1, 0, ExecutionType.FOREGROUND) {
 307                 @Override
 308                 public void handleData(ITmfEvent event) {
 309                     if (event != null) {
 310                         ITmfTimestamp ts = event.getTimestamp();
 311                         updateDisplayedCurrentTime(ts.normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue());
 312                         TmfTimeSynchSignal signal = new TmfTimeSynchSignal(this, ts);
 313                         fTimeSyncThrottle.queue(signal);
 314                     }
 315                 }
 316             };
 317             fTrace.sendRequest(request);
 318         }
 319     }
 320
 321     /**
 322      * Broadcast TmfSignal about new selected time range.
 323      * @param startTime the new start time
 324      * @param endTime the new end time
 325      */
 326     void updateTimeRange(long startTime, long endTime) {
 327         if (fTrace != null) {
 328             // Build the new time range; keep the current time
 329             TmfTimeRange timeRange = new TmfTimeRange(
 330                     new TmfTimestamp(startTime, ITmfTimestamp.NANOSECOND_SCALE),
 331                     new TmfTimestamp(endTime, ITmfTimestamp.NANOSECOND_SCALE));
 332             ITmfTimestamp currentTime = new TmfTimestamp(fCurrentTimestamp, ITmfTimestamp.NANOSECOND_SCALE);
 333             fTimeSpanControl.setValue(endTime - startTime);
 334
 335             updateDisplayedTimeRange(startTime, endTime);
 336
 337             // Send the FW signal
 338             TmfRangeSynchSignal signal = new TmfRangeSynchSignal(this, timeRange, currentTime);
 339             fTimeRangeSyncThrottle.queue(signal);
 340         }
 341     }
 342
 343     /**
 344      * Broadcast TmfSignal about new selected time range.
 345      * @param newDuration new duration (relative to current start time)
 346      */
 347     public synchronized void updateTimeRange(long newDuration) {
 348         if (fTrace != null) {
 349             long delta = newDuration - fWindowSpan;
 350             long newStartTime = fWindowStartTime - (delta / 2);
 351             setNewRange(newStartTime, newDuration);
 352         }
 353     }
 354
 355     private void setNewRange(long startTime, long duration) {
 356         long realStart = startTime;
 357
 358         if (realStart < fTraceStartTime) {
 359             realStart = fTraceStartTime;
 360         }
 361
 362         long endTime = realStart + duration;
 363         if (endTime > fTraceEndTime) {
 364             endTime = fTraceEndTime;
 365             if ((endTime - duration) > fTraceStartTime) {
 366                 realStart = endTime - duration;
 367             } else {
 368                 realStart = fTraceStartTime;
 369             }
 370         }
 371         updateTimeRange(realStart, endTime);
 372     }
 373
 374     // ------------------------------------------------------------------------
 375     // Signal handlers
 376     // ------------------------------------------------------------------------
 377
 378     /**
 379      * Handles trace opened signal. Loads histogram if new trace time range is not
 380      * equal <code>TmfTimeRange.NULL_RANGE</code>
 381      * @param signal the trace opened signal
 382      * @since 2.0
 383      */
 384     @TmfSignalHandler
 385     public void traceOpened(TmfTraceOpenedSignal signal) {
 386         assert (signal != null);
 387         fTrace = signal.getTrace();
 388         loadTrace();
 389     }
 390
 391     /**
 392      * Handles trace selected signal. Loads histogram if new trace time range is not
 393      * equal <code>TmfTimeRange.NULL_RANGE</code>
 394      * @param signal the trace selected signal
 395      * @since 2.0
 396      */
 397     @TmfSignalHandler
 398     public void traceSelected(TmfTraceSelectedSignal signal) {
 399         assert (signal != null);
 400         if (fTrace != signal.getTrace()) {
 401             fTrace = signal.getTrace();
 402             loadTrace();
 403         }
 404     }
 405
 406     private void loadTrace() {
 407         initializeHistograms();
 408         fParent.redraw();
 409     }
 410
 411     /**
 412      * Handles trace closed signal. Clears the view and data model and cancels requests.
 413      * @param signal the trace closed signal
 414      * @since 2.0
 415      */
 416     @TmfSignalHandler
 417     public void traceClosed(TmfTraceClosedSignal signal) {
 418
 419         if (signal.getTrace() != fTrace) {
 420             return;
 421         }
 422
 423         // Kill any running request
 424         if ((fTimeRangeRequest != null) && !fTimeRangeRequest.isCompleted()) {
 425             fTimeRangeRequest.cancel();
 426         }
 427         if ((fFullTraceRequest != null) && !fFullTraceRequest.isCompleted()) {
 428             fFullTraceRequest.cancel();
 429         }
 430
 431         // Initialize the internal data
 432         fTrace = null;
 433         fTraceStartTime = 0L;
 434         fTraceEndTime = 0L;
 435         fWindowStartTime = 0L;
 436         fWindowEndTime = 0L;
 437         fWindowSpan = 0L;
 438         fCurrentTimestamp = 0L;
 439
 440         // Clear the UI widgets
 441         fFullTraceHistogram.clear();
 442         fTimeRangeHistogram.clear();
 443         fCurrentEventTimeControl.setValue(Long.MIN_VALUE);
 444
 445         fTimeSpanControl.setValue(Long.MIN_VALUE);
 446     }
 447
 448     /**
 449      * Handles trace range updated signal. Extends histogram according to the new time range. If a
 450      * HistogramRequest is already ongoing, it will be cancelled and a new request with the new range
 451      * will be issued.
 452      *
 453      * @param signal the trace range updated signal
 454      * @since 2.0
 455      */
 456     @TmfSignalHandler
 457     public void traceRangeUpdated(TmfTraceRangeUpdatedSignal signal) {
 458
 459         if (signal.getTrace() != fTrace) {
 460             return;
 461         }
 462
 463         TmfTimeRange fullRange = signal.getRange();
 464
 465         fTraceStartTime = fullRange.getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 466         fTraceEndTime = fullRange.getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 467
 468         fFullTraceHistogram.setFullRange(fTraceStartTime, fTraceEndTime);
 469         fTimeRangeHistogram.setFullRange(fTraceStartTime, fTraceEndTime);
 470
 471         sendFullRangeRequest(fullRange);
 472     }
 473
 474     /**
 475      * Handles the trace updated signal. Used to update time limits (start and end time)
 476      * @param signal the trace updated signal
 477      * @since 2.0
 478      */
 479     @TmfSignalHandler
 480     public void traceUpdated(TmfTraceUpdatedSignal signal) {
 481         if (signal.getTrace() != fTrace) {
 482             return;
 483         }
 484         TmfTimeRange fullRange = signal.getTrace().getTimeRange();
 485         fTraceStartTime = fullRange.getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 486         fTraceEndTime = fullRange.getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 487
 488         fFullTraceHistogram.setFullRange(fTraceStartTime, fTraceEndTime);
 489         fTimeRangeHistogram.setFullRange(fTraceStartTime, fTraceEndTime);
 490
 491         fFullTraceHistogram.setTimeRange(fTimeRangeHistogram.getStartTime(), fWindowSpan);
 492         fTimeRangeHistogram.setTimeRange(fTimeRangeHistogram.getStartTime(), fWindowSpan);
 493
 494         if ((fFullTraceRequest != null) && fFullTraceRequest.getRange().getEndTime().compareTo(signal.getRange().getEndTime()) < 0) {
 495             sendFullRangeRequest(fullRange);
 496         }
 497 }
 498
 499     /**
 500      * Handles the current time updated signal. Sets the current time in the time range
 501      * histogram as well as the full histogram.
 502      *
 503      * @param signal the signal to process
 504      */
 505     @TmfSignalHandler
 506     public void currentTimeUpdated(TmfTimeSynchSignal signal) {
 507         // Because this can't happen :-)
 508         assert (signal != null);
 509
 510         // Update the selected event time
 511         ITmfTimestamp currentTime = signal.getCurrentTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE);
 512         updateDisplayedCurrentTime(currentTime.getValue());
 513     }
 514
 515     /**
 516      * Updates the current time range in the time range histogram and full range histogram.
 517      * @param signal the signal to process
 518      */
 519     @TmfSignalHandler
 520     public void timeRangeUpdated(TmfRangeSynchSignal signal) {
 521         // Because this can't happen :-)
 522         assert (signal != null);
 523
 524         if (fTrace != null) {
 525             // Validate the time range
 526             TmfTimeRange range = signal.getCurrentRange().getIntersection(fTrace.getTimeRange());
 527             if (range == null) {
 528                 return;
 529             }
 530
 531             updateDisplayedTimeRange(
 532                     range.getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue(),
 533                     range.getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue());
 534
 535             // Send the event request to populate the small histogram
 536             sendTimeRangeRequest(fWindowStartTime, fWindowEndTime);
 537
 538             fTimeSpanControl.setValue(fWindowSpan);
 539         }
 540     }
 541
 542     // ------------------------------------------------------------------------
 543     // Helper functions
 544     // ------------------------------------------------------------------------
 545
 546     private void initializeHistograms() {
 547         TmfTimeRange fullRange = updateTraceTimeRange();
 548         long timestamp = fTraceManager.getCurrentTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 549         long startTime = fTraceManager.getCurrentRange().getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 550         long duration = fTraceManager.getCurrentRange().getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue() - startTime;
 551
 552         if ((fTimeRangeRequest != null) && !fTimeRangeRequest.isCompleted()) {
 553             fTimeRangeRequest.cancel();
 554         }
 555         fTimeRangeHistogram.clear();
 556         fTimeRangeHistogram.setFullRange(fTraceStartTime, fTraceEndTime);
 557         fTimeRangeHistogram.setTimeRange(startTime, duration);
 558         fTimeRangeHistogram.setCurrentEvent(timestamp);
 559
 560         if ((fFullTraceRequest != null) && !fFullTraceRequest.isCompleted()) {
 561             fFullTraceRequest.cancel();
 562         }
 563         fFullTraceHistogram.clear();
 564         fFullTraceHistogram.setFullRange(fTraceStartTime, fTraceEndTime);
 565         fFullTraceHistogram.setTimeRange(startTime, duration);
 566         fFullTraceHistogram.setCurrentEvent(timestamp);
 567
 568         fWindowStartTime = startTime;
 569         fWindowSpan = duration;
 570         fWindowEndTime = startTime + duration;
 571
 572         fCurrentTimestamp = timestamp;
 573         fCurrentEventTimeControl.setValue(fCurrentTimestamp);
 574
 575         fTimeSpanControl.setValue(duration);
 576
 577         if (!fullRange.equals(TmfTimeRange.NULL_RANGE)) {
 578             sendTimeRangeRequest(startTime, startTime + duration);
 579             sendFullRangeRequest(fullRange);
 580         }
 581     }
 582
 583     private void updateDisplayedCurrentTime(long time) {
 584         fCurrentTimestamp = time;
 585
 586         fFullTraceHistogram.setCurrentEvent(fCurrentTimestamp);
 587         fTimeRangeHistogram.setCurrentEvent(fCurrentTimestamp);
 588         fCurrentEventTimeControl.setValue(fCurrentTimestamp);
 589     }
 590
 591     private void updateDisplayedTimeRange(long start, long end) {
 592         fWindowStartTime = start;
 593         fWindowEndTime = end;
 594         fWindowSpan = fWindowEndTime - fWindowStartTime;
 595         fFullTraceHistogram.setTimeRange(fWindowStartTime, fWindowSpan);
 596     }
 597
 598     private TmfTimeRange updateTraceTimeRange() {
 599         fTraceStartTime = 0L;
 600         fTraceEndTime = 0L;
 601
 602         TmfTimeRange timeRange = fTrace.getTimeRange();
 603         if (!timeRange.equals(TmfTimeRange.NULL_RANGE)) {
 604             fTraceStartTime = timeRange.getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 605             fTraceEndTime = timeRange.getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 606         }
 607         return timeRange;
 608     }
 609
 610     private void sendTimeRangeRequest(long startTime, long endTime) {
 611         if ((fTimeRangeRequest != null) && !fTimeRangeRequest.isCompleted()) {
 612             fTimeRangeRequest.cancel();
 613         }
 614         TmfTimestamp startTS = new TmfTimestamp(startTime, ITmfTimestamp.NANOSECOND_SCALE);
 615         TmfTimestamp endTS = new TmfTimestamp(endTime, ITmfTimestamp.NANOSECOND_SCALE);
 616         TmfTimeRange timeRange = new TmfTimeRange(startTS, endTS);
 617
 618         fTimeRangeHistogram.clear();
 619         fTimeRangeHistogram.setFullRange(fTraceStartTime, fTraceEndTime);
 620         fTimeRangeHistogram.setTimeRange(startTime, endTime - startTime);
 621
 622         int cacheSize = fTrace.getCacheSize();
 623         fTimeRangeRequest = new HistogramRequest(fTimeRangeHistogram.getDataModel(), timeRange, 0, TmfDataRequest.ALL_DATA, cacheSize, ExecutionType.FOREGROUND);
 624         fTrace.sendRequest(fTimeRangeRequest);
 625     }
 626
 627     private void sendFullRangeRequest(TmfTimeRange fullRange) {
 628         if ((fFullTraceRequest != null) && !fFullTraceRequest.isCompleted()) {
 629             fFullTraceRequest.cancel();
 630         }
 631         int cacheSize = fTrace.getCacheSize();
 632         fFullTraceRequest = new HistogramRequest(fFullTraceHistogram.getDataModel(), fullRange, (int) fFullTraceHistogram.fDataModel.getNbEvents(),
 633                 TmfDataRequest.ALL_DATA, cacheSize, ExecutionType.BACKGROUND);
 634         fTrace.sendRequest(fFullTraceRequest);
 635     }
 636
 637 }