tmf/org.eclipse.tracecompass.tmf.analysis.xml.ui/src/org/eclipse/tracecompass/internal/tmf/analysis/xml/ui/views/timegraph/XmlTimeGraphView.java

   1 /*******************************************************************************
   2  * Copyright (c) 2014, 2016 École Polytechnique de Montréal
   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  *   Florian Wininger - Initial API and implementation
  11  *   Geneviève Bastien - Review of the initial implementation
  12  *******************************************************************************/
  13
  14 package org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.views.timegraph;
  15
  16 import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
  17
  18 import java.util.ArrayList;
  19 import java.util.Collections;
  20 import java.util.Comparator;
  21 import java.util.HashMap;
  22 import java.util.HashSet;
  23 import java.util.LinkedList;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.Set;
  27 import java.util.TreeSet;
  28
  29 import org.eclipse.core.runtime.IProgressMonitor;
  30 import org.eclipse.core.runtime.IStatus;
  31 import org.eclipse.jdt.annotation.NonNull;
  32 import org.eclipse.jface.util.IPropertyChangeListener;
  33 import org.eclipse.jface.util.PropertyChangeEvent;
  34 import org.eclipse.swt.widgets.Composite;
  35 import org.eclipse.swt.widgets.Display;
  36 import org.eclipse.tracecompass.common.core.NonNullUtils;
  37 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.model.ITmfXmlModelFactory;
  38 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.model.ITmfXmlStateAttribute;
  39 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.model.readonly.TmfXmlReadOnlyModelFactory;
  40 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.module.IXmlStateSystemContainer;
  41 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.module.XmlUtils;
  42 import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.stateprovider.TmfXmlStrings;
  43 import org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.Activator;
  44 import org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.TmfXmlUiStrings;
  45 import org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.views.XmlViewInfo;
  46 import org.eclipse.tracecompass.internal.tmf.analysis.xml.ui.views.timegraph.XmlEntry.EntryDisplayType;
  47 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem;
  48 import org.eclipse.tracecompass.statesystem.core.StateSystemUtils;
  49 import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
  50 import org.eclipse.tracecompass.statesystem.core.exceptions.StateSystemDisposedException;
  51 import org.eclipse.tracecompass.statesystem.core.exceptions.StateValueTypeException;
  52 import org.eclipse.tracecompass.statesystem.core.exceptions.TimeRangeException;
  53 import org.eclipse.tracecompass.statesystem.core.interval.ITmfStateInterval;
  54 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  55 import org.eclipse.tracecompass.tmf.core.statesystem.ITmfAnalysisModuleWithStateSystems;
  56 import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace;
  57 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils;
  58 import org.eclipse.tracecompass.tmf.ui.views.timegraph.AbstractTimeGraphView;
  59 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.ITimeGraphPresentationProvider2;
  60 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ILinkEvent;
  61 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeEvent;
  62 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeGraphEntry;
  63 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.NullTimeEvent;
  64 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeEvent;
  65 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeGraphEntry;
  66 import org.w3c.dom.Element;
  67
  68 import com.google.common.collect.Iterables;
  69
  70 /**
  71  * This view displays state system data in a time graph view. It uses an XML
  72  * {@link TmfXmlUiStrings#TIME_GRAPH_VIEW} element from an XML file. This
  73  * element defines which entries from the state system will be shown and also
  74  * gives additional information on the presentation of the view (states, colors,
  75  * etc)
  76  *
  77  * @author Florian Wininger
  78  */
  79 public class XmlTimeGraphView extends AbstractTimeGraphView {
  80
  81     /** View ID. */
  82     public static final @NonNull String ID = "org.eclipse.linuxtools.tmf.analysis.xml.ui.views.timegraph"; //$NON-NLS-1$
  83
  84     private static final String[] DEFAULT_COLUMN_NAMES = new String[] {
  85             Messages.XmlTimeGraphView_ColumnName,
  86             Messages.XmlTimeGraphView_ColumnId,
  87             Messages.XmlTimeGraphView_ColumnParentId,
  88     };
  89
  90     private static final String[] DEFAULT_FILTER_COLUMN_NAMES = new String[] {
  91             Messages.XmlTimeGraphView_ColumnName,
  92             Messages.XmlTimeGraphView_ColumnId
  93     };
  94
  95     /** The relative weight of the sash */
  96     private static final int[] fWeight = { 1, 2 };
  97
  98     private static final String EMPTY_STRING = ""; //$NON-NLS-1$
  99     private static final @NonNull String SPLIT_STRING = "/"; //$NON-NLS-1$
 100
 101     private final @NonNull XmlViewInfo fViewInfo = new XmlViewInfo(ID);
 102     private final ITmfXmlModelFactory fFactory;
 103     private final Map<String, Integer> fStringValueMap = new HashMap<>();
 104
 105     // ------------------------------------------------------------------------
 106     // Constructors
 107     // ------------------------------------------------------------------------
 108
 109     /**
 110      * Default constructor
 111      */
 112     public XmlTimeGraphView() {
 113         super(ID, new XmlPresentationProvider());
 114         setWeight(fWeight);
 115         setTreeColumns(DEFAULT_COLUMN_NAMES);
 116         setTreeLabelProvider(new XmlTreeLabelProvider());
 117         setFilterColumns(DEFAULT_FILTER_COLUMN_NAMES);
 118         setFilterLabelProvider(new XmlTreeLabelProvider());
 119         setEntryComparator(new XmlEntryComparator());
 120         this.addPartPropertyListener(new IPropertyChangeListener() {
 121             @Override
 122             public void propertyChange(PropertyChangeEvent event) {
 123                 if (event.getProperty().equals(TmfXmlUiStrings.XML_OUTPUT_DATA)) {
 124                     Object newValue = event.getNewValue();
 125                     if (newValue instanceof String) {
 126                         String data = (String) newValue;
 127                         fViewInfo.setViewData(data);
 128                         loadNewXmlView();
 129                     }
 130                 }
 131             }
 132         });
 133         fFactory = TmfXmlReadOnlyModelFactory.getInstance();
 134     }
 135
 136     @Override
 137     public void createPartControl(Composite parent) {
 138         super.createPartControl(parent);
 139         fViewInfo.setName(NonNullUtils.checkNotNull(getViewSite().getSecondaryId()));
 140     }
 141
 142     private void loadNewXmlView() {
 143         rebuild();
 144     }
 145
 146     private void setViewTitle(final String title) {
 147         Display.getDefault().asyncExec(new Runnable() {
 148             @Override
 149             public void run() {
 150                 setPartName(title);
 151             }
 152         });
 153
 154     }
 155
 156     @Override
 157     protected String getNextText() {
 158         return Messages.XmlTimeGraphView_NextText;
 159     }
 160
 161     @Override
 162     protected String getNextTooltip() {
 163         return Messages.XmlTimeGraphView_NextTooltip;
 164     }
 165
 166     @Override
 167     protected String getPrevText() {
 168         return Messages.XmlTimeGraphView_PreviousText;
 169     }
 170
 171     @Override
 172     protected String getPrevTooltip() {
 173         return Messages.XmlTimeGraphView_PreviousInterval;
 174     }
 175
 176     /**
 177      * Default label provider, it shows name, id and parent columns
 178      *
 179      * TODO: There should be a way to define columns in the XML
 180      */
 181     private static class XmlTreeLabelProvider extends TreeLabelProvider {
 182
 183         @Override
 184         public String getColumnText(Object element, int columnIndex) {
 185             XmlEntry entry = (XmlEntry) element;
 186
 187             if (DEFAULT_COLUMN_NAMES[columnIndex].equals(Messages.XmlTimeGraphView_ColumnName)) {
 188                 return entry.getName();
 189             } else if (DEFAULT_COLUMN_NAMES[columnIndex].equals(Messages.XmlTimeGraphView_ColumnId)) {
 190                 return entry.getId();
 191             } else if (DEFAULT_COLUMN_NAMES[columnIndex].equals(Messages.XmlTimeGraphView_ColumnParentId)) {
 192                 return entry.getParentId();
 193             }
 194             return EMPTY_STRING;
 195         }
 196
 197     }
 198
 199     private static class XmlEntryComparator implements Comparator<ITimeGraphEntry> {
 200
 201         @Override
 202         public int compare(ITimeGraphEntry o1, ITimeGraphEntry o2) {
 203
 204             int result = 0;
 205
 206             if ((o1 instanceof XmlEntry) && (o2 instanceof XmlEntry)) {
 207                 XmlEntry entry1 = (XmlEntry) o1;
 208                 XmlEntry entry2 = (XmlEntry) o2;
 209                 result = entry1.getTrace().getStartTime().compareTo(entry2.getTrace().getStartTime());
 210                 if (result == 0) {
 211                     result = entry1.getTrace().getName().compareTo(entry2.getTrace().getName());
 212                 }
 213                 if (result == 0) {
 214                     result = entry1.getName().compareTo(entry2.getName());
 215                 }
 216             }
 217
 218             if (result == 0) {
 219                 result = o1.getStartTime() < o2.getStartTime() ? -1 : o1.getStartTime() > o2.getStartTime() ? 1 : 0;
 220             }
 221
 222             return result;
 223         }
 224     }
 225
 226     // ------------------------------------------------------------------------
 227     // Internal
 228     // ------------------------------------------------------------------------
 229
 230     @Override
 231     protected void buildEntryList(ITmfTrace trace, ITmfTrace parentTrace, IProgressMonitor monitor) {
 232
 233         if (!fViewInfo.waitForInitialization()) {
 234             return;
 235         }
 236         /*
 237          * Get the view element from the XML file. If the element can't be
 238          * found, return.
 239          */
 240         Element viewElement = fViewInfo.getViewElement(TmfXmlUiStrings.TIME_GRAPH_VIEW);
 241         if (viewElement == null) {
 242             return;
 243         }
 244         ITimeGraphPresentationProvider2 pres = this.getPresentationProvider();
 245         if (pres instanceof XmlPresentationProvider) {
 246             /*
 247              * TODO: Each entry of a line could have their own states/color.
 248              * That will require an update to the presentation provider
 249              */
 250             ((XmlPresentationProvider) pres).loadNewStates(viewElement);
 251         }
 252
 253         String title = fViewInfo.getViewTitle(viewElement);
 254         if (title == null) {
 255             title = Messages.XmlTimeGraphView_DefaultTitle;
 256         }
 257         setViewTitle(title);
 258
 259         // Empty the additional state values
 260         fStringValueMap.clear();
 261
 262         Set<String> analysisIds = fViewInfo.getViewAnalysisIds(viewElement);
 263
 264         List<Element> entries = XmlUtils.getChildElements(viewElement, TmfXmlUiStrings.ENTRY_ELEMENT);
 265         Set<XmlEntry> entryList = new TreeSet<>(getEntryComparator());
 266         if (monitor.isCanceled()) {
 267             return;
 268         }
 269
 270         Set<@NonNull ITmfAnalysisModuleWithStateSystems> stateSystemModules = new HashSet<>();
 271         if (analysisIds.isEmpty()) {
 272             /*
 273              * No analysis specified, take all state system analysis modules
 274              */
 275             Iterables.addAll(stateSystemModules, TmfTraceUtils.getAnalysisModulesOfClass(trace, ITmfAnalysisModuleWithStateSystems.class));
 276         } else {
 277             for (String moduleId : analysisIds) {
 278                 moduleId = checkNotNull(moduleId);
 279                 ITmfAnalysisModuleWithStateSystems module = TmfTraceUtils.getAnalysisModuleOfClass(trace, ITmfAnalysisModuleWithStateSystems.class, moduleId);
 280                 if (module != null) {
 281                     stateSystemModules.add(module);
 282                 }
 283             }
 284         }
 285
 286         for (ITmfAnalysisModuleWithStateSystems module : stateSystemModules) {
 287             IStatus status = module.schedule();
 288             if (!status.isOK()) {
 289                 return;
 290             }
 291             if (!module.waitForInitialization()) {
 292                 return;
 293             }
 294             for (ITmfStateSystem ssq : module.getStateSystems()) {
 295                 ssq.waitUntilBuilt();
 296
 297                 long startTime = ssq.getStartTime();
 298                 long endTime = ssq.getCurrentEndTime();
 299                 XmlEntry groupEntry = new XmlEntry(-1, trace, trace.getName(), ssq);
 300                 entryList.add(groupEntry);
 301                 setStartTime(Math.min(getStartTime(), startTime));
 302                 setEndTime(Math.max(getEndTime(), endTime));
 303
 304                 /* Add children entry of this entry for each line */
 305                 for (Element entry : entries) {
 306                     buildEntry(entry, groupEntry, -1);
 307                 }
 308             }
 309         }
 310
 311         addToEntryList(parentTrace, new ArrayList<TimeGraphEntry>(entryList));
 312
 313         if (parentTrace.equals(getTrace())) {
 314             refresh();
 315         }
 316         for (XmlEntry traceEntry : entryList) {
 317             if (monitor.isCanceled()) {
 318                 return;
 319             }
 320             long startTime = traceEntry.getStateSystem().getStartTime();
 321             long endTime = traceEntry.getStateSystem().getCurrentEndTime() + 1;
 322             buildStatusEvent(traceEntry, monitor, startTime, endTime);
 323         }
 324     }
 325
 326     private void buildEntry(Element entryElement, XmlEntry parentEntry, int baseQuark) {
 327         /* Get the attribute string to display */
 328         String path = entryElement.getAttribute(TmfXmlUiStrings.PATH);
 329         if (path.isEmpty()) {
 330             path = TmfXmlStrings.WILDCARD;
 331         }
 332
 333         /*
 334          * Make sure the XML element has either a display attribute or entries,
 335          * otherwise issue a warning
 336          */
 337
 338         List<Element> displayElements = XmlUtils.getChildElements(entryElement, TmfXmlUiStrings.DISPLAY_ELEMENT);
 339         List<Element> entryElements = XmlUtils.getChildElements(entryElement, TmfXmlUiStrings.ENTRY_ELEMENT);
 340
 341         if (displayElements.isEmpty() && entryElements.isEmpty()) {
 342             Activator.logWarning(String.format("XML view: entry for %s should have either a display element or entry elements", path)); //$NON-NLS-1$
 343             return;
 344         }
 345
 346         ITmfStateSystem ss = parentEntry.getStateSystem();
 347
 348         /* Get the list of quarks to process with this path */
 349         String[] paths = path.split(SPLIT_STRING);
 350         int i = 0;
 351         List<Integer> quarks = Collections.singletonList(baseQuark);
 352
 353         while (i < paths.length) {
 354             List<Integer> subQuarks = new LinkedList<>();
 355             /* Replace * by .* to have a regex string */
 356             String name = paths[i].replaceAll("\\*", ".*"); //$NON-NLS-1$ //$NON-NLS-2$
 357             for (int relativeQuark : quarks) {
 358                 for (int quark : ss.getSubAttributes(relativeQuark, false, name)) {
 359                     subQuarks.add(quark);
 360                 }
 361             }
 362             quarks = subQuarks;
 363             i++;
 364         }
 365
 366         /* Process each quark */
 367         XmlEntry currentEntry = parentEntry;
 368         Element displayElement = null;
 369         Map<String, XmlEntry> entryMap = new HashMap<>();
 370         if (!displayElements.isEmpty()) {
 371             displayElement = displayElements.get(0);
 372         }
 373         for (int quark : quarks) {
 374             currentEntry = parentEntry;
 375             /* Process the current entry, if specified */
 376             if (displayElement != null) {
 377                 currentEntry = processEntry(entryElement, displayElement, parentEntry, quark, ss);
 378                 entryMap.put(currentEntry.getId(), currentEntry);
 379             }
 380             /* Process the children entry of this entry */
 381             for (Element subEntryEl : entryElements) {
 382                 buildEntry(subEntryEl, currentEntry, quark);
 383             }
 384         }
 385         if (!entryMap.isEmpty()) {
 386             buildTree(entryMap, parentEntry);
 387         }
 388     }
 389
 390     private XmlEntry processEntry(@NonNull Element entryElement, @NonNull Element displayEl,
 391             @NonNull XmlEntry parentEntry, int quark, ITmfStateSystem ss) {
 392         /*
 393          * Get the start time and end time of this entry from the display
 394          * attribute
 395          */
 396         ITmfXmlStateAttribute display = fFactory.createStateAttribute(displayEl, parentEntry);
 397         int displayQuark = display.getAttributeQuark(quark, null);
 398         if (displayQuark == IXmlStateSystemContainer.ERROR_QUARK) {
 399             return new XmlEntry(quark, parentEntry.getTrace(),
 400                     String.format("Unknown display quark for %s", ss.getAttributeName(quark)), ss); //$NON-NLS-1$
 401         }
 402
 403         long entryStart = ss.getStartTime();
 404         long entryEnd = ss.getCurrentEndTime();
 405
 406         try {
 407
 408             ITmfStateInterval oneInterval = ss.querySingleState(entryStart, displayQuark);
 409
 410             /* The entry start is the first non-null interval */
 411             while (oneInterval.getStateValue().isNull()) {
 412                 long ts = oneInterval.getEndTime() + 1;
 413                 if (ts > ss.getCurrentEndTime()) {
 414                     break;
 415                 }
 416                 oneInterval = ss.querySingleState(ts, displayQuark);
 417             }
 418             entryStart = oneInterval.getStartTime();
 419
 420             /* The entry end is the last non-null interval */
 421             oneInterval = ss.querySingleState(entryEnd, displayQuark);
 422             while (oneInterval.getStateValue().isNull()) {
 423                 long ts = oneInterval.getStartTime() - 1;
 424                 if (ts < ss.getStartTime()) {
 425                     break;
 426                 }
 427                 oneInterval = ss.querySingleState(ts, displayQuark);
 428             }
 429             entryEnd = oneInterval.getEndTime();
 430
 431         } catch (StateSystemDisposedException e) {
 432         }
 433
 434         return new XmlEntry(quark, displayQuark, parentEntry.getTrace(), ss.getAttributeName(quark),
 435                 entryStart, entryEnd, EntryDisplayType.DISPLAY, ss, entryElement);
 436     }
 437
 438     private void buildStatusEvent(XmlEntry traceEntry, @NonNull IProgressMonitor monitor, long start, long end) {
 439         long resolution = (end - start) / getDisplayWidth();
 440         long startTime = Math.max(start, traceEntry.getStartTime());
 441         long endTime = Math.min(end + 1, traceEntry.getEndTime());
 442         List<ITimeEvent> eventList = getEventList(traceEntry, startTime, endTime, resolution, monitor);
 443         if (monitor.isCanceled()) {
 444             return;
 445         }
 446         traceEntry.setEventList(eventList);
 447         redraw();
 448
 449         for (ITimeGraphEntry entry : traceEntry.getChildren()) {
 450             if (monitor.isCanceled()) {
 451                 return;
 452             }
 453             XmlEntry xmlEntry = (XmlEntry) entry;
 454             buildStatusEvent(xmlEntry, monitor, start, end);
 455         }
 456     }
 457
 458     /** Build a tree using getParentId() and getId() */
 459     private static void buildTree(Map<String, XmlEntry> entryMap, XmlEntry rootEntry) {
 460         for (XmlEntry entry : entryMap.values()) {
 461             boolean root = true;
 462             if (!entry.getParentId().isEmpty()) {
 463                 XmlEntry parent = entryMap.get(entry.getParentId());
 464                 /*
 465                  * Associate the parent entry only if their time overlap. A
 466                  * child entry may start before its parent, for example at the
 467                  * beginning of the trace if a parent has not yet appeared in
 468                  * the state system. We just want to make sure that the entry
 469                  * didn't start after the parent ended or ended before the
 470                  * parent started.
 471                  */
 472                 if (parent != null &&
 473                         !(entry.getStartTime() > parent.getEndTime() ||
 474                                 entry.getEndTime() < parent.getStartTime())) {
 475                     parent.addChild(entry);
 476                     root = false;
 477                 }
 478             }
 479             if (root) {
 480                 rootEntry.addChild(entry);
 481             }
 482         }
 483     }
 484
 485     @Override
 486     protected List<ITimeEvent> getEventList(TimeGraphEntry entry, long startTime, long endTime, long resolution, IProgressMonitor monitor) {
 487         if (!(entry instanceof XmlEntry)) {
 488             return Collections.EMPTY_LIST;
 489         }
 490         XmlEntry xmlEntry = (XmlEntry) entry;
 491         ITmfStateSystem ssq = xmlEntry.getStateSystem();
 492         final long realStart = Math.max(startTime, entry.getStartTime());
 493         final long realEnd = Math.min(endTime, entry.getEndTime());
 494         if (realEnd <= realStart) {
 495             return null;
 496         }
 497         List<ITimeEvent> eventList = null;
 498         int quark = xmlEntry.getDisplayQuark();
 499
 500         try {
 501             if (xmlEntry.getType() == EntryDisplayType.DISPLAY) {
 502
 503                 List<ITmfStateInterval> statusIntervals = StateSystemUtils.queryHistoryRange(ssq, quark, realStart, realEnd - 1, resolution, monitor);
 504                 eventList = new ArrayList<>(statusIntervals.size());
 505                 long lastEndTime = -1;
 506                 for (ITmfStateInterval statusInterval : statusIntervals) {
 507                     if (monitor.isCanceled()) {
 508                         return null;
 509                     }
 510                     int status = getStatusFromInterval(statusInterval);
 511                     long time = statusInterval.getStartTime();
 512                     long duration = statusInterval.getEndTime() - time + 1;
 513                     if (!statusInterval.getStateValue().isNull()) {
 514                         if (lastEndTime != time && lastEndTime != -1) {
 515                             eventList.add(new TimeEvent(entry, lastEndTime, time - lastEndTime));
 516                         }
 517                         eventList.add(new TimeEvent(entry, time, duration, status));
 518                     } else if (lastEndTime == -1 || time + duration >= endTime) {
 519                         // add null event if it intersects the start or end time
 520                         eventList.add(new NullTimeEvent(entry, time, duration));
 521                     }
 522                     lastEndTime = time + duration;
 523                 }
 524             }
 525         } catch (AttributeNotFoundException | TimeRangeException | StateValueTypeException | StateSystemDisposedException e) {
 526             /* Ignored */
 527         }
 528         return eventList;
 529     }
 530
 531     private int getStatusFromInterval(ITmfStateInterval statusInterval) {
 532         ITmfStateValue stateValue = statusInterval.getStateValue();
 533         int status = -1;
 534         switch (stateValue.getType()) {
 535         case INTEGER:
 536         case NULL:
 537             status = stateValue.unboxInt();
 538             break;
 539         case LONG:
 540             status = (int) stateValue.unboxLong();
 541             break;
 542         case STRING:
 543             String statusStr = stateValue.unboxStr();
 544             Integer statusInt = fStringValueMap.get(statusStr);
 545             if (statusInt != null) {
 546                 status = statusInt;
 547                 break;
 548             }
 549             ITimeGraphPresentationProvider2 pres = this.getPresentationProvider();
 550             if (pres instanceof XmlPresentationProvider) {
 551                 // Add this new state to the presentation provider
 552                 status = ((XmlPresentationProvider) pres).addState(statusStr);
 553                 fStringValueMap.put(statusStr, status);
 554             }
 555             break;
 556         case DOUBLE:
 557             status = (int) stateValue.unboxDouble();
 558             break;
 559         case CUSTOM:
 560         default:
 561             break;
 562         }
 563
 564         return status;
 565     }
 566
 567     @Override
 568     protected List<ILinkEvent> getLinkList(long startTime, long endTime, long resolution, IProgressMonitor monitor) {
 569         /* TODO: not implemented yet, need XML to go along */
 570         return Collections.EMPTY_LIST;
 571     }
 572
 573 }