| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2011 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 | * Mathieu Denis (mathieu.denis@polymtl.ca) - Generalized version based on LTTng |
| 11 | * Bernd Hufmann - Updated to use trace reference in TmfEvent and streaming |
| 12 | *******************************************************************************/ |
| 13 | |
| 14 | package org.eclipse.linuxtools.tmf.ui.views.statistics; |
| 15 | |
| 16 | import java.util.Vector; |
| 17 | |
| 18 | import org.eclipse.jface.viewers.TreeViewer; |
| 19 | import org.eclipse.jface.viewers.TreeViewerColumn; |
| 20 | import org.eclipse.jface.viewers.Viewer; |
| 21 | import org.eclipse.jface.viewers.ViewerComparator; |
| 22 | import org.eclipse.linuxtools.tmf.core.event.TmfEvent; |
| 23 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; |
| 24 | import org.eclipse.linuxtools.tmf.core.experiment.TmfExperiment; |
| 25 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest; |
| 26 | import org.eclipse.linuxtools.tmf.core.request.ITmfEventRequest; |
| 27 | import org.eclipse.linuxtools.tmf.core.request.TmfDataRequest; |
| 28 | import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest; |
| 29 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest.ExecutionType; |
| 30 | import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentDisposedSignal; |
| 31 | import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentRangeUpdatedSignal; |
| 32 | import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentSelectedSignal; |
| 33 | import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler; |
| 34 | import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace; |
| 35 | import org.eclipse.linuxtools.tmf.ui.views.TmfView; |
| 36 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.AbsTmfStatisticsTree; |
| 37 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.ITmfColumnDataProvider; |
| 38 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfBaseColumnData; |
| 39 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfBaseColumnDataProvider; |
| 40 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfBaseStatisticsTree; |
| 41 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfStatisticsTreeNode; |
| 42 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfStatisticsTreeRootFactory; |
| 43 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfTreeContentProvider; |
| 44 | import org.eclipse.swt.SWT; |
| 45 | import org.eclipse.swt.events.SelectionAdapter; |
| 46 | import org.eclipse.swt.events.SelectionEvent; |
| 47 | import org.eclipse.swt.graphics.Color; |
| 48 | import org.eclipse.swt.graphics.Cursor; |
| 49 | import org.eclipse.swt.layout.FillLayout; |
| 50 | import org.eclipse.swt.widgets.Composite; |
| 51 | import org.eclipse.swt.widgets.Display; |
| 52 | import org.eclipse.swt.widgets.Event; |
| 53 | import org.eclipse.swt.widgets.Listener; |
| 54 | |
| 55 | /** |
| 56 | * <b><u>TmfStatisticsView</u></b> |
| 57 | * <p> |
| 58 | * The generic Statistics View displays statistics for any kind of traces. |
| 59 | * |
| 60 | * It is implemented according to the MVC pattern. - The model is a TmfStatisticsTreeNode built by the State Manager. - The view is built with a |
| 61 | * TreeViewer. - The controller that keeps model and view synchronized is an observer of the model. |
| 62 | * </p> |
| 63 | */ |
| 64 | public class TmfStatisticsView extends TmfView { |
| 65 | /** |
| 66 | * The ID correspond to the package in which this class is embedded |
| 67 | */ |
| 68 | public static final String ID = "org.eclipse.linuxtools.tmf.ui.views.statistics"; //$NON-NLS-1$ |
| 69 | |
| 70 | // view name |
| 71 | public static final String TMF_STATISTICS_VIEW = "StatisticsView"; //$NON-NLS-1$ |
| 72 | |
| 73 | // Refresh frequency |
| 74 | protected static final Long STATS_INPUT_CHANGED_REFRESH = 5000L; |
| 75 | |
| 76 | // Default PAGE_SIZE |
| 77 | protected static final int PAGE_SIZE = 50000; // For background request |
| 78 | |
| 79 | // The actual tree to display |
| 80 | protected TreeViewer fTreeViewer; |
| 81 | // Stores the request to the experiment |
| 82 | protected ITmfEventRequest<TmfEvent> fRequest = null; |
| 83 | |
| 84 | // Update synchronization parameters (used for streaming) |
| 85 | protected boolean fStatisticsUpdateBusy = false; |
| 86 | protected boolean fStatisticsUpdatePending = false; |
| 87 | protected TmfTimeRange fStatisticsUpdateRange = null; |
| 88 | protected final Object fStatisticsUpdateSyncObj = new Object(); |
| 89 | |
| 90 | // Object to store the cursor while waiting for the experiment to load |
| 91 | private Cursor fWaitCursor = null; |
| 92 | |
| 93 | // Stores the number of instance |
| 94 | private static int fCountInstance = 0; |
| 95 | |
| 96 | // Number of this instance. Used as an instance ID |
| 97 | private int fInstanceNb; |
| 98 | |
| 99 | /** |
| 100 | * Constructor of a statistics view. |
| 101 | * |
| 102 | * @param viewName |
| 103 | * The name to give to the view. |
| 104 | */ |
| 105 | public TmfStatisticsView(String viewName) { |
| 106 | super(viewName); |
| 107 | fCountInstance++; |
| 108 | fInstanceNb = fCountInstance; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Default constructor. |
| 113 | */ |
| 114 | public TmfStatisticsView() { |
| 115 | this(TMF_STATISTICS_VIEW); |
| 116 | } |
| 117 | |
| 118 | /* |
| 119 | * (non-Javadoc) |
| 120 | * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite) |
| 121 | */ |
| 122 | @Override |
| 123 | public void createPartControl(Composite parent) { |
| 124 | final Vector<TmfBaseColumnData> columnDataList = getColumnDataProvider().getColumnData(); |
| 125 | parent.setLayout(new FillLayout()); |
| 126 | |
| 127 | fTreeViewer = new TreeViewer(parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL); |
| 128 | fTreeViewer.setContentProvider(new TmfTreeContentProvider()); |
| 129 | fTreeViewer.getTree().setHeaderVisible(true); |
| 130 | fTreeViewer.setUseHashlookup(true); |
| 131 | |
| 132 | for (final TmfBaseColumnData columnData : columnDataList) { |
| 133 | final TreeViewerColumn treeColumn = new TreeViewerColumn(fTreeViewer, columnData.getAlignment()); |
| 134 | treeColumn.getColumn().setText(columnData.getHeader()); |
| 135 | treeColumn.getColumn().setWidth(columnData.getWidth()); |
| 136 | treeColumn.getColumn().setToolTipText(columnData.getTooltip()); |
| 137 | |
| 138 | if (columnData.getComparator() != null) { |
| 139 | treeColumn.getColumn().addSelectionListener(new SelectionAdapter() { |
| 140 | @Override |
| 141 | public void widgetSelected(SelectionEvent e) { |
| 142 | if (fTreeViewer.getTree().getSortDirection() == SWT.UP || fTreeViewer.getTree().getSortColumn() != treeColumn.getColumn()) { |
| 143 | fTreeViewer.setComparator(columnData.getComparator()); |
| 144 | fTreeViewer.getTree().setSortDirection(SWT.DOWN); |
| 145 | } else { |
| 146 | fTreeViewer.setComparator(new ViewerComparator() { |
| 147 | @Override |
| 148 | public int compare(Viewer viewer, Object e1, Object e2) { |
| 149 | return -1 * columnData.getComparator().compare(viewer, e1, e2); |
| 150 | } |
| 151 | }); |
| 152 | fTreeViewer.getTree().setSortDirection(SWT.UP); |
| 153 | } |
| 154 | fTreeViewer.getTree().setSortColumn(treeColumn.getColumn()); |
| 155 | } |
| 156 | }); |
| 157 | } |
| 158 | treeColumn.setLabelProvider(columnData.getLabelProvider()); |
| 159 | } |
| 160 | |
| 161 | // Handler that will draw the bar charts. |
| 162 | fTreeViewer.getTree().addListener(SWT.EraseItem, new Listener() { |
| 163 | @Override |
| 164 | public void handleEvent(Event event) { |
| 165 | if (columnDataList.get(event.index).getPercentageProvider() != null) { |
| 166 | TmfStatisticsTreeNode node = (TmfStatisticsTreeNode) event.item.getData(); |
| 167 | |
| 168 | double percentage = columnDataList.get(event.index).getPercentageProvider().getPercentage(node); |
| 169 | if (percentage == 0) { |
| 170 | return; |
| 171 | } |
| 172 | |
| 173 | if ((event.detail & SWT.SELECTED) > 0) { |
| 174 | Color oldForeground = event.gc.getForeground(); |
| 175 | event.gc.setForeground(event.item.getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION)); |
| 176 | event.gc.fillRectangle(event.x, event.y, event.width, event.height); |
| 177 | event.gc.setForeground(oldForeground); |
| 178 | event.detail &= ~SWT.SELECTED; |
| 179 | } |
| 180 | |
| 181 | int barWidth = (int) ((fTreeViewer.getTree().getColumn(1).getWidth() - 8) * percentage); |
| 182 | int oldAlpha = event.gc.getAlpha(); |
| 183 | Color oldForeground = event.gc.getForeground(); |
| 184 | Color oldBackground = event.gc.getBackground(); |
| 185 | event.gc.setAlpha(64); |
| 186 | event.gc.setForeground(event.item.getDisplay().getSystemColor(SWT.COLOR_BLUE)); |
| 187 | event.gc.setBackground(event.item.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND)); |
| 188 | event.gc.fillGradientRectangle(event.x, event.y, barWidth, event.height, true); |
| 189 | event.gc.drawRectangle(event.x, event.y, barWidth, event.height); |
| 190 | event.gc.setForeground(oldForeground); |
| 191 | event.gc.setBackground(oldBackground); |
| 192 | event.gc.setAlpha(oldAlpha); |
| 193 | event.detail &= ~SWT.BACKGROUND; |
| 194 | } |
| 195 | } |
| 196 | }); |
| 197 | |
| 198 | fTreeViewer.setComparator(columnDataList.get(0).getComparator()); |
| 199 | fTreeViewer.getTree().setSortColumn(fTreeViewer.getTree().getColumn(0)); |
| 200 | fTreeViewer.getTree().setSortDirection(SWT.DOWN); |
| 201 | |
| 202 | // Read current data if any available |
| 203 | TmfExperiment<?> experiment = TmfExperiment.getCurrentExperiment(); |
| 204 | if (experiment != null) { |
| 205 | // Insert the statistics data into the tree |
| 206 | @SuppressWarnings({ "rawtypes", "unchecked" }) |
| 207 | TmfExperimentSelectedSignal<?> signal = new TmfExperimentSelectedSignal(this, experiment); |
| 208 | experimentSelected(signal); |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | /* |
| 213 | * (non-Javadoc) |
| 214 | * @see org.eclipse.linuxtools.tmf.ui.views.TmfView#dispose() |
| 215 | */ |
| 216 | @Override |
| 217 | public void dispose() { |
| 218 | super.dispose(); |
| 219 | if (fWaitCursor != null) { |
| 220 | fWaitCursor.dispose(); |
| 221 | } |
| 222 | |
| 223 | // clean the model |
| 224 | TmfStatisticsTreeRootFactory.removeAll(); |
| 225 | } |
| 226 | |
| 227 | /* |
| 228 | * (non-Javadoc) |
| 229 | * @see org.eclipse.ui.part.WorkbenchPart#setFocus() |
| 230 | */ |
| 231 | @Override |
| 232 | public void setFocus() { |
| 233 | fTreeViewer.getTree().setFocus(); |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Refresh the view. |
| 238 | */ |
| 239 | public void modelInputChanged(boolean complete) { |
| 240 | // Ignore update if disposed |
| 241 | if (fTreeViewer.getTree().isDisposed()) |
| 242 | return; |
| 243 | |
| 244 | fTreeViewer.getTree().getDisplay().asyncExec(new Runnable() { |
| 245 | @Override |
| 246 | public void run() { |
| 247 | if (!fTreeViewer.getTree().isDisposed()) |
| 248 | fTreeViewer.refresh(); |
| 249 | } |
| 250 | }); |
| 251 | |
| 252 | if (complete) { |
| 253 | sendPendingUpdate(); |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | /** |
| 258 | * Called when an experiment request has failed or has been canceled Remove the data retrieved from the experiment from the statistics tree. |
| 259 | * |
| 260 | * @param name |
| 261 | * the experiment name |
| 262 | */ |
| 263 | public void modelIncomplete(String name) { |
| 264 | Object input = fTreeViewer.getInput(); |
| 265 | if (input != null && input instanceof TmfStatisticsTreeNode) { |
| 266 | // The data from this experiment is invalid and shall be removed to |
| 267 | // refresh upon next selection |
| 268 | TmfStatisticsTreeRootFactory.removeStatTreeRoot(getTreeID(name)); |
| 269 | |
| 270 | // Reset synchronization information |
| 271 | resetUpdateSynchronization(); |
| 272 | modelInputChanged(false); |
| 273 | } |
| 274 | waitCursor(false); |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * If the user choose another experiment, the current must be disposed. |
| 279 | * |
| 280 | * @param signal |
| 281 | */ |
| 282 | @TmfSignalHandler |
| 283 | public void experimentDisposed(TmfExperimentDisposedSignal<? extends TmfEvent> signal) { |
| 284 | cancelOngoingRequest(); |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * Handler called when an experiment is selected. Checks if the experiment has changed and requests the selected experiment if it has not yet been |
| 289 | * cached. |
| 290 | * |
| 291 | * @param signal |
| 292 | * contains the information about the selection. |
| 293 | */ |
| 294 | @TmfSignalHandler |
| 295 | public void experimentSelected(TmfExperimentSelectedSignal<? extends TmfEvent> signal) { |
| 296 | if (signal != null) { |
| 297 | TmfExperiment<?> experiment = signal.getExperiment(); |
| 298 | String experimentName = experiment.getName(); |
| 299 | |
| 300 | if (TmfStatisticsTreeRootFactory.containsTreeRoot(getTreeID(experimentName))) { |
| 301 | // The experiment root is already present |
| 302 | TmfStatisticsTreeNode experimentTreeNode = TmfStatisticsTreeRootFactory.getStatTreeRoot(getTreeID(experimentName)); |
| 303 | |
| 304 | @SuppressWarnings("rawtypes") |
| 305 | ITmfTrace[] traces = experiment.getTraces(); |
| 306 | |
| 307 | // check if there is partial data loaded in the experiment |
| 308 | int numTraces = experiment.getTraces().length; |
| 309 | int numNodeTraces = experimentTreeNode.getNbChildren(); |
| 310 | |
| 311 | if (numTraces == numNodeTraces) { |
| 312 | boolean same = true; |
| 313 | // Detect if the experiment contains the same traces as when |
| 314 | // previously selected |
| 315 | for (int i = 0; i < numTraces; i++) { |
| 316 | String traceName = traces[i].getName(); |
| 317 | if (!experimentTreeNode.containsChild(traceName)) { |
| 318 | same = false; |
| 319 | break; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | if (same) { |
| 324 | // no need to reload data, all traces are already loaded |
| 325 | fTreeViewer.setInput(experimentTreeNode); |
| 326 | |
| 327 | resetUpdateSynchronization(); |
| 328 | |
| 329 | return; |
| 330 | } |
| 331 | experimentTreeNode.reset(); |
| 332 | } |
| 333 | } else { |
| 334 | TmfStatisticsTreeRootFactory.addStatsTreeRoot(getTreeID(experimentName), getStatisticData()); |
| 335 | } |
| 336 | |
| 337 | resetUpdateSynchronization(); |
| 338 | |
| 339 | TmfStatisticsTreeNode treeModelRoot = TmfStatisticsTreeRootFactory.getStatTreeRoot(getTreeID(experiment.getName())); |
| 340 | |
| 341 | // if the model has contents, clear to start over |
| 342 | if (treeModelRoot.hasChildren()) { |
| 343 | treeModelRoot.reset(); |
| 344 | } |
| 345 | |
| 346 | // set input to a clean data model |
| 347 | fTreeViewer.setInput(treeModelRoot); |
| 348 | |
| 349 | // if the data is not available or has changed, reload it |
| 350 | requestData(experiment, experiment.getTimeRange()); |
| 351 | } |
| 352 | } |
| 353 | |
| 354 | /** |
| 355 | * @param signal |
| 356 | */ |
| 357 | @SuppressWarnings("unchecked") |
| 358 | @TmfSignalHandler |
| 359 | public void experimentRangeUpdated(TmfExperimentRangeUpdatedSignal signal) { |
| 360 | TmfExperiment<TmfEvent> experiment = (TmfExperiment<TmfEvent>) signal.getExperiment(); |
| 361 | // validate |
| 362 | if (! experiment.equals(TmfExperiment.getCurrentExperiment())) { |
| 363 | return; |
| 364 | } |
| 365 | |
| 366 | requestData(experiment, signal.getRange()); |
| 367 | } |
| 368 | |
| 369 | |
| 370 | /** |
| 371 | * Return the size of the request when performing background request. |
| 372 | * |
| 373 | * @return the block size for background request. |
| 374 | */ |
| 375 | protected int getIndexPageSize() { |
| 376 | return PAGE_SIZE; |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * |
| 381 | * @return the quantity of data to retrieve before a refresh of the view is performed. |
| 382 | */ |
| 383 | protected long getInputChangedRefresh() { |
| 384 | return STATS_INPUT_CHANGED_REFRESH; |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * This method can be overridden to implement another way to represent the statistics data and to retrieve the information for display. |
| 389 | * |
| 390 | * @return a TmfStatisticsData object. |
| 391 | */ |
| 392 | protected AbsTmfStatisticsTree getStatisticData() { |
| 393 | return new TmfBaseStatisticsTree(); |
| 394 | } |
| 395 | |
| 396 | /** |
| 397 | * This method can be overridden to change the representation of the data in the columns. |
| 398 | * |
| 399 | * @return an object implementing ITmfBaseColumnDataProvider. |
| 400 | */ |
| 401 | protected ITmfColumnDataProvider getColumnDataProvider() { |
| 402 | return new TmfBaseColumnDataProvider(); |
| 403 | } |
| 404 | |
| 405 | /** |
| 406 | * Construct the ID based on the experiment name |
| 407 | * @param experimentName the name of the trace name to show in the view |
| 408 | * @return a view ID |
| 409 | */ |
| 410 | protected String getTreeID(String experimentName) { |
| 411 | return experimentName + fInstanceNb; |
| 412 | } |
| 413 | |
| 414 | /** |
| 415 | * When the experiment is loading the cursor will be different so the user know the processing is not finished yet. |
| 416 | * |
| 417 | * @param waitInd |
| 418 | * indicates if we need to show the waiting cursor, or the default one |
| 419 | */ |
| 420 | protected void waitCursor(final boolean waitInd) { |
| 421 | if ((fTreeViewer == null) || (fTreeViewer.getTree().isDisposed())) { |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | Display display = fTreeViewer.getControl().getDisplay(); |
| 426 | if (fWaitCursor == null) { |
| 427 | fWaitCursor = new Cursor(display, SWT.CURSOR_WAIT); |
| 428 | } |
| 429 | |
| 430 | // Perform the updates on the UI thread |
| 431 | display.asyncExec(new Runnable() { |
| 432 | @Override |
| 433 | public void run() { |
| 434 | if ((fTreeViewer != null) && (!fTreeViewer.getTree().isDisposed())) { |
| 435 | Cursor cursor = null; /* indicates default */ |
| 436 | if (waitInd) { |
| 437 | cursor = fWaitCursor; |
| 438 | } |
| 439 | fTreeViewer.getControl().setCursor(cursor); |
| 440 | } |
| 441 | } |
| 442 | }); |
| 443 | } |
| 444 | |
| 445 | /** |
| 446 | * Perform the request for an experiment and populates the statistics tree with event. |
| 447 | * @param experiment experiment for which we need the statistics data. |
| 448 | * @param time range to request |
| 449 | */ |
| 450 | @SuppressWarnings("unchecked") |
| 451 | protected void requestData(final TmfExperiment<?> experiment, TmfTimeRange timeRange) { |
| 452 | if (experiment != null) { |
| 453 | |
| 454 | // Check if update is already ongoing |
| 455 | if (checkUpdateBusy(timeRange)) { |
| 456 | return; |
| 457 | } |
| 458 | |
| 459 | int index = 0; |
| 460 | for (TmfStatisticsTreeNode node : ((TmfStatisticsTreeNode) fTreeViewer.getInput()).getChildren()) { |
| 461 | index += (int) node.getValue().nbEvents; |
| 462 | } |
| 463 | |
| 464 | // Preparation of the event request |
| 465 | fRequest = new TmfEventRequest<TmfEvent>(TmfEvent.class, timeRange, index, TmfDataRequest.ALL_DATA, getIndexPageSize(), ExecutionType.BACKGROUND) { |
| 466 | |
| 467 | @Override |
| 468 | public void handleData(TmfEvent data) { |
| 469 | super.handleData(data); |
| 470 | if (data != null) { |
| 471 | AbsTmfStatisticsTree statisticsData = TmfStatisticsTreeRootFactory.getStatTree(getTreeID(experiment.getName())); |
| 472 | |
| 473 | final String traceName = data.getParentTrace().getName(); |
| 474 | ITmfExtraEventInfo extraInfo = new ITmfExtraEventInfo() { |
| 475 | @Override |
| 476 | public String getTraceName() { |
| 477 | if (traceName == null) { |
| 478 | return Messages.TmfStatisticsView_UnknownTraceName; |
| 479 | } |
| 480 | return traceName; |
| 481 | } |
| 482 | }; |
| 483 | statisticsData.registerEvent(data, extraInfo); |
| 484 | statisticsData.increase(data, extraInfo, 1); |
| 485 | // Refresh View |
| 486 | if ((getNbRead() % getInputChangedRefresh()) == 0) { |
| 487 | modelInputChanged(false); |
| 488 | } |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | @Override |
| 493 | public void handleSuccess() { |
| 494 | super.handleSuccess(); |
| 495 | modelInputChanged(true); |
| 496 | waitCursor(false); |
| 497 | } |
| 498 | |
| 499 | @Override |
| 500 | public void handleFailure() { |
| 501 | super.handleFailure(); |
| 502 | modelIncomplete(experiment.getName()); |
| 503 | } |
| 504 | |
| 505 | @Override |
| 506 | public void handleCancel() { |
| 507 | super.handleCancel(); |
| 508 | modelIncomplete(experiment.getName()); |
| 509 | } |
| 510 | }; |
| 511 | ((TmfExperiment<TmfEvent>) experiment).sendRequest((ITmfDataRequest<TmfEvent>) fRequest); |
| 512 | waitCursor(true); |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * Cancels the current ongoing request |
| 518 | */ |
| 519 | protected void cancelOngoingRequest() { |
| 520 | if (fRequest != null && !fRequest.isCompleted()) { |
| 521 | fRequest.cancel(); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | /** |
| 526 | * Reset update synchronization information |
| 527 | */ |
| 528 | protected void resetUpdateSynchronization() { |
| 529 | synchronized (fStatisticsUpdateSyncObj) { |
| 530 | fStatisticsUpdateBusy = false; |
| 531 | fStatisticsUpdatePending = false; |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | /** |
| 536 | * Checks if statistic update is ongoing. If it is ongoing the new time range is stored as pending |
| 537 | * |
| 538 | * @param timeRange - new time range |
| 539 | * @return true if statistic update is ongoing else false |
| 540 | */ |
| 541 | protected boolean checkUpdateBusy(TmfTimeRange timeRange) { |
| 542 | synchronized (fStatisticsUpdateSyncObj) { |
| 543 | if (fStatisticsUpdateBusy) { |
| 544 | fStatisticsUpdatePending = true; |
| 545 | fStatisticsUpdateRange = timeRange; |
| 546 | return true; |
| 547 | } |
| 548 | fStatisticsUpdateBusy = true; |
| 549 | return false; |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | /** |
| 554 | * Sends pending request (if any) |
| 555 | */ |
| 556 | protected void sendPendingUpdate() { |
| 557 | synchronized (fStatisticsUpdateSyncObj) { |
| 558 | fStatisticsUpdateBusy = false; |
| 559 | if (fStatisticsUpdatePending) { |
| 560 | fStatisticsUpdatePending = false; |
| 561 | requestData(TmfExperiment.getCurrentExperiment(), fStatisticsUpdateRange); |
| 562 | } |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | } |