Re-structure LTTng sub-project as per the Linux Tools guidelines
[deliverable/tracecompass.git] / org.eclipse.linuxtools.lttng.ui / src / org / eclipse / linuxtools / lttng / ui / views / statistics / StatisticsView.java
index e01aa1e5ec755327dd262f6beea79f63fa674bd0..4ca1fef94933f1a2536aee648ad1313015f7d0c8 100644 (file)
@@ -15,7 +15,10 @@ package org.eclipse.linuxtools.lttng.ui.views.statistics;
 
 import java.text.DecimalFormat;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedList;
 import java.util.Set;
 
 import org.eclipse.jface.viewers.ColumnLabelProvider;
@@ -24,25 +27,38 @@ import org.eclipse.jface.viewers.TreeViewer;
 import org.eclipse.jface.viewers.TreeViewerColumn;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerComparator;
-import org.eclipse.linuxtools.lttng.state.IStateDataRequestListener;
-import org.eclipse.linuxtools.lttng.state.RequestCompletedSignal;
-import org.eclipse.linuxtools.lttng.state.RequestStartedSignal;
-import org.eclipse.linuxtools.lttng.state.evProcessor.EventProcessorProxy;
-import org.eclipse.linuxtools.lttng.state.experiment.StateExperimentManager;
-import org.eclipse.linuxtools.lttng.state.experiment.StateManagerFactory;
-import org.eclipse.linuxtools.lttng.ui.views.statistics.evProcessor.StatsEventCountHandlerFactory;
+import org.eclipse.linuxtools.lttng.core.control.LttngCoreProviderFactory;
+import org.eclipse.linuxtools.lttng.core.event.LttngEvent;
+import org.eclipse.linuxtools.lttng.core.model.LTTngTreeNode;
+import org.eclipse.linuxtools.lttng.core.request.ILttngSyntEventRequest;
+import org.eclipse.linuxtools.lttng.core.state.evProcessor.AbsEventToHandlerResolver;
+import org.eclipse.linuxtools.lttng.core.state.experiment.StateManagerFactory;
+import org.eclipse.linuxtools.lttng.ui.TraceDebug;
+import org.eclipse.linuxtools.lttng.ui.model.trange.ItemContainer;
+import org.eclipse.linuxtools.lttng.ui.views.common.AbsTimeUpdateView;
+import org.eclipse.linuxtools.lttng.ui.views.common.ParamsUpdater;
 import org.eclipse.linuxtools.lttng.ui.views.statistics.evProcessor.StatsTimeCountHandlerFactory;
-import org.eclipse.linuxtools.lttng.ui.views.statistics.model.StatisticsTreeFactory;
+import org.eclipse.linuxtools.lttng.ui.views.statistics.model.KernelStatisticsData;
 import org.eclipse.linuxtools.lttng.ui.views.statistics.model.StatisticsTreeNode;
-import org.eclipse.linuxtools.tmf.signal.TmfSignalHandler;
-import org.eclipse.linuxtools.tmf.ui.views.TmfView;
+import org.eclipse.linuxtools.lttng.ui.views.statistics.model.StatisticsTreeRootFactory;
+import org.eclipse.linuxtools.tmf.core.event.TmfEvent;
+import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
+import org.eclipse.linuxtools.tmf.core.experiment.TmfExperiment;
+import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest.ExecutionType;
+import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentRangeUpdatedSignal;
+import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentSelectedSignal;
+import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler;
+import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
+import org.eclipse.linuxtools.tmf.ui.viewers.timeAnalysis.model.ITmfTimeAnalysisEntry;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.Cursor;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.layout.FillLayout;
 import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Event;
 import org.eclipse.swt.widgets.Listener;
 import org.eclipse.ui.ISharedImages;
@@ -58,43 +74,53 @@ import org.eclipse.ui.PlatformUI;
  * TreeViewer. - The controller that keeps model and view synchronised is an
  * observer of the model.
  */
-public class StatisticsView extends TmfView implements
-               IStateDataRequestListener {
-
-       public static final String ID = "org.eclipse.linuxtools.lttng.ui.views.statistics";
-
+public class StatisticsView extends AbsTimeUpdateView {
+       public static final String ID = "org.eclipse.linuxtools.lttng.ui.views.statistics"; //$NON-NLS-1$
        private TreeViewer treeViewer;
 
        // Table column names
-       private final String LEVEL_COLUMN = "Level";
-       private final String EVENTS_COUNT_COLUMN = "Number of Events";
-       private final String CPU_TIME_COLUMN = "CPU Time";
-       private final String CUMULATIVE_CPU_TIME_COLUMN = "Cumulative CPU Time";
-       private final String ELAPSED_TIME_COLUMN = "Elapsed Time";
+       private final String LEVEL_COLUMN = Messages.StatisticsView_LevelColumn;
+       private final String EVENTS_COUNT_COLUMN = Messages.StatisticsView_NbEventsColumn;
+       private final String CPU_TIME_COLUMN = Messages.StatisticsView_CPUTimeColumn;
+       private final String CUMULATIVE_CPU_TIME_COLUMN = Messages.StatisticsView_CumCPUTimeColumn;
+       private final String ELAPSED_TIME_COLUMN = Messages.StatisticsView_ElapsedTimeColumn;
 
        // Table column tooltips
-       private final String LEVEL_COLUMN_TIP = "Level at which statistics apply.";
-       private final String EVENTS_COUNT_COLUMN_TIP = "Total amount of events that are tied to given resource.";
-       private final String CPU_TIME_COLUMN_TIP = "Total amount of time the CPU was used excluding wait times(I/O, etc.) at that level.";
-       private final String CUMULATIVE_CPU_TIME_COLUMN_TIP = "Total amount of time between the first and last event excluding wait times in a level.";
-       private final String ELAPSED_TIME_COLUMN_TIP = "Total amount of time the CPU was used including wait times(I/O, etc.) at that level.";
+       private final String LEVEL_COLUMN_TIP = Messages.StatisticsView_LevelColumnTip;
+       private final String EVENTS_COUNT_COLUMN_TIP = Messages.StatisticsView_NbEventsTip;
+       private final String CPU_TIME_COLUMN_TIP = Messages.StatisticsView_CPUTimeTip;
+       private final String CUMULATIVE_CPU_TIME_COLUMN_TIP = Messages.StatisticsView_CumCPUTimeTip;
+       private final String ELAPSED_TIME_COLUMN_TIP = Messages.StatisticsView_ElapsedTimeTip;
 
        // Level for which statistics should not be displayed.
-       private Set<String> folderLevels = new HashSet<String>(Arrays
-                       .asList(new String[] { "Event Types", "Modes", "Submodes", "CPUs",
-                                       "Processes", "Functions" }));
+    private Set<Integer> folderLevels = new HashSet<Integer>(Arrays
+                   .asList(new Integer[] { KernelStatisticsData.HEADER_CPUS_INT, 
+                                           KernelStatisticsData.HEADER_EVENT_TYPES_INT, 
+                                           KernelStatisticsData.HEADER_FUNCTIONS_INT, 
+                                           KernelStatisticsData.HEADER_MODES_INT, 
+                                           KernelStatisticsData.HEADER_PROCESSES_INT, 
+                                           KernelStatisticsData.HEADER_SUBMODES_INT }));
 
        // Levels for which sub-levels should not contain time-related statistics.
-       private Set<String> levelsWithEmptyTime = new HashSet<String>(Arrays
-                       .asList(new String[] { "Event Types" }));
+       private Set<Integer> levelsWithEmptyTime = new HashSet<Integer>(Arrays
+                   .asList(new Integer[] { KernelStatisticsData.HEADER_EVENT_TYPES_INT }));
 
-       private DecimalFormat decimalFormat = new DecimalFormat("0.#########");
+       private DecimalFormat decimalFormat = new DecimalFormat("0.#########"); //$NON-NLS-1$
 
+       private Cursor fwaitCursor = null;
+
+       private static final Long STATS_INPUT_CHANGED_REFRESH = 5000L;
+       
        // Used to draw bar charts in columns.
        private interface ColumnPercentageProvider {
                public double getPercentage(StatisticsTreeNode node);
        }
 
+    private boolean fStatisticsUpdateBusy = false;
+    private boolean fStatisticsUpdatePending = false;
+    private TmfTimeRange fStatisticsUpdateRange = null;
+    private final Object fStatisticsUpdateSyncObj = new Object();
+
        /**
         * Contains all the information necessary to build a column of the table.
         */
@@ -134,7 +160,12 @@ public class StatisticsView extends TmfView implements
                                        new ColumnLabelProvider() {
                                                @Override
                                                public String getText(Object element) {
-                                                       return ((StatisticsTreeNode) element).getKey();
+                                                   StatisticsTreeNode node = (StatisticsTreeNode) element;
+                            if (folderLevels.contains(node.getKey())) {
+                                return (KernelStatisticsData.getCategoryFromId(node.getKey().intValue()));
+                            } else {
+                                return node.getName();
+                            }
                                                }
 
                                                @Override
@@ -155,8 +186,9 @@ public class StatisticsView extends TmfView implements
                                                public int compare(Viewer viewer, Object e1, Object e2) {
                                                        StatisticsTreeNode n1 = (StatisticsTreeNode) e1;
                                                        StatisticsTreeNode n2 = (StatisticsTreeNode) e2;
-
-                                                       return n1.getKey().compareTo(n2.getKey());
+                                                       
+//                                                     return n1.getKey().compareTo(n2.getKey());
+                                                       return n1.compareTo(n2);
                                                }
                                        }, null),
                        new ColumnData(EVENTS_COUNT_COLUMN, 125, SWT.LEFT,
@@ -167,7 +199,7 @@ public class StatisticsView extends TmfView implements
                                                        if (!folderLevels.contains(node.getKey())) {
                                                                return Long.toString(node.getValue().nbEvents);
                                                        } else {
-                                                               return "";
+                                                               return ""; //$NON-NLS-1$
                                                        }
                                                }
                                        }, new ViewerComparator() {
@@ -180,6 +212,7 @@ public class StatisticsView extends TmfView implements
                                                                        .getValue().nbEvents);
                                                }
                                        }, new ColumnPercentageProvider() {
+                                               @Override
                                                public double getPercentage(StatisticsTreeNode node) {
                                                        StatisticsTreeNode parent = node;
                                                        do {
@@ -202,11 +235,11 @@ public class StatisticsView extends TmfView implements
                                                        StatisticsTreeNode node = (StatisticsTreeNode) element;
 
                                                        if (folderLevels.contains(node.getKey())) {
-                                                               return "";
+                                                               return ""; //$NON-NLS-1$
                                                        } else if (node.getParent() != null
                                                                        && levelsWithEmptyTime.contains(node
                                                                                        .getParent().getKey())) {
-                                                               return "";
+                                                               return ""; //$NON-NLS-1$
                                                        } else {
                                                                return decimalFormat
                                                                                .format(node.getValue().cpuTime
@@ -220,11 +253,11 @@ public class StatisticsView extends TmfView implements
                                                public String getText(Object element) {
                                                        StatisticsTreeNode node = (StatisticsTreeNode) element;
                                                        if (folderLevels.contains(node.getKey())) {
-                                                               return "";
+                                                               return ""; //$NON-NLS-1$
                                                        } else if (node.getParent() != null
                                                                        && levelsWithEmptyTime.contains(node
                                                                                        .getParent().getKey())) {
-                                                               return "";
+                                                               return ""; //$NON-NLS-1$
                                                        } else {
                                                                return decimalFormat
                                                                                .format(node.getValue().cumulativeCpuTime
@@ -238,11 +271,11 @@ public class StatisticsView extends TmfView implements
                                                public String getText(Object element) {
                                                        StatisticsTreeNode node = (StatisticsTreeNode) element;
                                                        if (folderLevels.contains(node.getKey())) {
-                                                               return "";
+                                                               return ""; //$NON-NLS-1$
                                                        } else if (node.getParent() != null
                                                                        && levelsWithEmptyTime.contains(node
                                                                                        .getParent().getKey())) {
-                                                               return "";
+                                                               return ""; //$NON-NLS-1$
                                                        } else {
                                                                return decimalFormat
                                                                                .format(node.getValue().elapsedTime
@@ -264,6 +297,7 @@ public class StatisticsView extends TmfView implements
                 * org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang
                 * .Object)
                 */
+               @Override
                public Object[] getChildren(Object parentElement) {
                        return ((StatisticsTreeNode) parentElement).getChildren().toArray();
                }
@@ -275,6 +309,7 @@ public class StatisticsView extends TmfView implements
                 * org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang
                 * .Object)
                 */
+               @Override
                public Object getParent(Object element) {
                        return ((StatisticsTreeNode) element).getParent();
                }
@@ -286,6 +321,7 @@ public class StatisticsView extends TmfView implements
                 * org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang
                 * .Object)
                 */
+               @Override
                public boolean hasChildren(Object element) {
                        return ((StatisticsTreeNode) element).hasChildren();
                }
@@ -297,6 +333,7 @@ public class StatisticsView extends TmfView implements
                 * org.eclipse.jface.viewers.IStructuredContentProvider#getElements(
                 * java.lang.Object)
                 */
+               @Override
                public Object[] getElements(Object inputElement) {
                        return getChildren(inputElement);
                }
@@ -306,6 +343,7 @@ public class StatisticsView extends TmfView implements
                 * 
                 * @see org.eclipse.jface.viewers.IContentProvider#dispose()
                 */
+               @Override
                public void dispose() {
                }
 
@@ -317,10 +355,20 @@ public class StatisticsView extends TmfView implements
                 * .jface.viewers.Viewer, java.lang.Object, java.lang.Object)
                 */
                // @Override
+               @Override
                public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
                }
        }
 
+       public StatisticsView(String viewName) {
+               super(viewName);
+       }
+
+       private static final String STATISTICS_VIEW = "StatisticsView"; //$NON-NLS-1$
+       public StatisticsView() {
+               this(STATISTICS_VIEW);
+       }
+
        /*
         * (non-Javadoc)
         * 
@@ -330,11 +378,6 @@ public class StatisticsView extends TmfView implements
         */
        @Override
        public void createPartControl(Composite parent) {
-               EventProcessorProxy.getInstance().addEventProcessorFactory(
-                               StatsTimeCountHandlerFactory.getInstance());
-               EventProcessorProxy.getInstance().addEventProcessorFactory(
-                               StatsEventCountHandlerFactory.getInstance());
-
                parent.setLayout(new FillLayout());
 
                treeViewer = new TreeViewer(parent, SWT.BORDER | SWT.H_SCROLL
@@ -390,6 +433,7 @@ public class StatisticsView extends TmfView implements
                // Handler that will draw the bar charts.
                treeViewer.getTree().addListener(SWT.EraseItem, new Listener() {
                        // @Override
+                       @Override
                        public void handleEvent(Event event) {
                                if (columnDataList[event.index].percentageProvider != null) {
                                        StatisticsTreeNode node = (StatisticsTreeNode) event.item
@@ -437,23 +481,28 @@ public class StatisticsView extends TmfView implements
                treeViewer.getTree().setSortColumn(treeViewer.getTree().getColumn(0));
                treeViewer.getTree().setSortDirection(SWT.DOWN);
 
-               treeViewer.setInput(StatisticsTreeFactory
-                               .getStatisticsTree("Experiment"));
-
                // Read current data if any available
-               StateExperimentManager experimentManger = StateManagerFactory
-                               .getExperimentManager();
-               experimentManger.readExperiment("statisticsView", this);
-
+               TmfExperiment<?> experiment = TmfExperiment.getCurrentExperiment();
+               if (experiment != null) {
+                       
+                       @SuppressWarnings({ "rawtypes", "unchecked" })
+                       TmfExperimentSelectedSignal<?> signal = new TmfExperimentSelectedSignal(this, experiment);
+                       experimentSelected(signal);
+                       
+               } else {
+                       TraceDebug.debug("No selected experiment information available"); //$NON-NLS-1$
+               }
        }
+
        @Override
        public void dispose() {
                super.dispose();
-               EventProcessorProxy.getInstance().removeEventProcessorFactory(
-                               StatsTimeCountHandlerFactory.getInstance());
-               EventProcessorProxy.getInstance().removeEventProcessorFactory(
-                               StatsEventCountHandlerFactory.getInstance());
+               if (fwaitCursor != null) {
+                       fwaitCursor.dispose();
+               }
 
+               // clean the model
+               StatisticsTreeRootFactory.removeAll();
        }
 
        /*
@@ -466,19 +515,298 @@ public class StatisticsView extends TmfView implements
                treeViewer.getTree().setFocus();
        }
 
-       @TmfSignalHandler
-       public void processingStarted(RequestStartedSignal request) {
-               // Nothing to do for the time being
+       
+       /*
+     * (non-Javadoc)
+     * @see org.eclipse.linuxtools.lttng.ui.views.common.AbsTimeUpdateView#getInputChangedRefresh()
+     */
+    @Override
+    protected Long getInputChangedRefresh() {
+        return STATS_INPUT_CHANGED_REFRESH;
+    }
 
+       /**
+        * @return
+        */
+       @Override
+       public AbsEventToHandlerResolver getEventProcessor() {
+               return StatsTimeCountHandlerFactory.getInstance();
        }
 
-       @TmfSignalHandler
-       public void processingCompleted(RequestCompletedSignal signal) {
+       /*
+        * (non-Javadoc)
+        * 
+        * @see
+        * org.eclipse.linuxtools.lttng.ui.views.common.AbsTimeUpdateView#waitCursor
+        * (boolean)
+        */
+       @Override
+       protected void waitCursor(final boolean waitInd) {
+               if ((treeViewer == null) || (treeViewer.getTree().isDisposed())) {
+                       return;
+               }
+
+               Display display = treeViewer.getControl().getDisplay();
+               if (fwaitCursor == null) {
+                       fwaitCursor = new Cursor(display, SWT.CURSOR_WAIT);
+               }
+
+               // Perform the updates on the UI thread
+               display.asyncExec(new Runnable() {
+                       @Override
+                       public void run() {
+                               if ((treeViewer != null) && (!treeViewer.getTree().isDisposed())) {
+                                       Cursor cursor = null; /* indicates default */
+                                       if (waitInd) {
+                                               cursor = fwaitCursor;
+                                       }
+                                       treeViewer.getControl().setCursor(cursor);
+                               }
+                       }
+               });
+       }
+
+       @Override
+       public void ModelUpdatePrep(TmfTimeRange timeRange, boolean clearAllData) {
+               Object input = treeViewer.getInput();
+               if ((input != null) && (input instanceof StatisticsTreeNode) && (!treeViewer.getTree().isDisposed())) {
+                       if (clearAllData) {
+                               ((StatisticsTreeNode) input).reset();
+                       }
+                       treeViewer.getTree().getDisplay().asyncExec(new Runnable() {
+                               // @Override
+                               @Override
+                               public void run() {
+                                       if (!treeViewer.getTree().isDisposed())
+                                               treeViewer.refresh();
+                               }
+                       });
+               }
+       }
+
+       @Override
+       public void modelInputChanged(ILttngSyntEventRequest request, boolean complete) {
+               // Ignore update if disposed
+               if (treeViewer.getTree().isDisposed()) return;
+               
+               if(TraceDebug.isSV() && complete) {
+                   // print results
+
+                   TmfExperiment<?> experiment = TmfExperiment.getCurrentExperiment();
+                   if(experiment != null) {
+                       StatisticsTreeNode node = StatisticsTreeRootFactory.getStatTreeRoot(experiment.getName());
+                       printRecursively(node);
+
+                   }
+               }
+               
                treeViewer.getTree().getDisplay().asyncExec(new Runnable() {
                        // @Override
+                       @Override
                        public void run() {
-                               treeViewer.refresh();
+                               if (!treeViewer.getTree().isDisposed())
+                                       treeViewer.refresh();
                        }
                });
+               
+               if (complete) {
+                       synchronized (fStatisticsUpdateSyncObj) {
+                               fStatisticsUpdateBusy = false;
+                               if (fStatisticsUpdatePending) {
+                                       fStatisticsUpdatePending = false;
+                                       requestData(TmfExperiment.getCurrentExperiment(), fStatisticsUpdateRange, false);
+                               }
+                       }
+               }
+
+       }
+
+       private static int level = 0;
+    private void printRecursively(StatisticsTreeNode node) {
+        String tab = ""; //$NON-NLS-1$
+        for (int i = 0; i < level; i++) {
+            tab += "\t"; //$NON-NLS-1$
+        }
+        level++;
+        TraceDebug.traceSV(tab + node.getContent());
+        if (node.hasChildren()) {
+            LinkedList<StatisticsTreeNode> childreen = (LinkedList<StatisticsTreeNode>)node.getChildren();
+            Collections.sort(childreen);
+
+            for (Iterator<StatisticsTreeNode> iterator = childreen.iterator(); iterator.hasNext();) {
+                StatisticsTreeNode statisticsTreeNode = (StatisticsTreeNode) iterator.next();
+                printRecursively(statisticsTreeNode);
+            }
+        }
+        level--;
+    }
+
+       /*
+        * (non-Javadoc)
+        * 
+        * @see org.eclipse.linuxtools.lttng.ui.views.common.AbsTimeUpdateView#
+        * modelIncomplete
+        * (org.eclipse.linuxtools.lttng.request.ILttngSyntEventRequest)
+        */
+       @Override
+       public void modelIncomplete(ILttngSyntEventRequest request) {
+               Object input = treeViewer.getInput();
+               if (input != null && input instanceof StatisticsTreeNode) {
+                       // The data from this experiment is invalid and shall be removed to
+                       // refresh upon next selection
+                   String name = request.getExperimentName();
+                       StatisticsTreeRootFactory.removeStatTreeRoot(name);
+               }
+       }
+
+       /**
+        * @param signal
+        */
+       @TmfSignalHandler
+       public void experimentSelected(TmfExperimentSelectedSignal<? extends TmfEvent> signal) {
+               if (signal != null) {
+                       TmfExperiment<?> experiment = signal.getExperiment();
+                       String experimentName =  experiment.getName();
+
+                       if (StatisticsTreeRootFactory.containsTreeRoot(experimentName)) {
+                               // The experiment root is already present
+                               StatisticsTreeNode experimentTreeNode = StatisticsTreeRootFactory.getStatTreeRoot(experimentName);
+
+                               ITmfTrace[] traces = experiment.getTraces();
+                               
+                               LTTngTreeNode expNode = StateManagerFactory.getExperimentManager().getSelectedExperiment();
+                               
+                               // check if there is partial data loaded in the experiment
+                               int numTraces = experiment.getTraces().length;
+                               int numNodeTraces = experimentTreeNode.getNbChildren();
+
+                               if (numTraces == numNodeTraces) {
+                                       boolean same = true;
+                                       // Detect if the experiment contains the same traces as when
+                                       // previously selected
+                                       for (int i = 0; i < numTraces; i++) {
+                                               String traceName = traces[i].getName();
+                                               LTTngTreeNode child = expNode.getChildByName(traceName);
+                                               if ((child == null) || (!experimentTreeNode.containsChild(child.getId().intValue()))) {
+                                                        same = false;
+                                                        break;
+                                               }
+                                       }
+
+                                       if (same) {
+                                               // no need to reload data, all traces are already loaded
+                                               treeViewer.setInput(experimentTreeNode);
+                                               synchronized (fStatisticsUpdateSyncObj) {
+                                                       fStatisticsUpdateBusy = false;
+                                                       fStatisticsUpdatePending = false;
+                                               }
+                                               return;
+                                       }
+                               }
+                       }
+
+                       StatisticsTreeNode treeModelRoot = StatisticsTreeRootFactory.getStatTreeRoot(experiment.getName());
+
+                       // if the model has contents, clear to start over
+                       if (treeModelRoot.hasChildren()) {
+                               treeModelRoot.reset();
+                       }
+
+                       // set input to a clean data model
+                       treeViewer.setInput(treeModelRoot);
+
+                       synchronized (fStatisticsUpdateSyncObj) {
+                               fStatisticsUpdateBusy = false;
+                               fStatisticsUpdatePending = false;
+                       }
+
+                       // if the data is not available or has changed, reload it
+                       requestData(experiment, experiment.getTimeRange(), true);
+               }
+       }
+
+       /**
+        * @param signal
+        */
+       @SuppressWarnings("unchecked")
+       @TmfSignalHandler
+       public void experimentRangeUpdated(TmfExperimentRangeUpdatedSignal signal) {
+               TmfExperiment<LttngEvent> experiment = (TmfExperiment<LttngEvent>) signal.getExperiment();
+               // validate
+               if (! experiment.equals(TmfExperiment.getCurrentExperiment())) {
+                       return;
+               }
+
+               requestData(experiment, signal.getRange(), false);
+       }
+
+       /**
+        * @param experiment
+        */
+       private void requestData(TmfExperiment<?> experiment, TmfTimeRange range, boolean clearingData) {
+               if (experiment != null) {
+                       synchronized (fStatisticsUpdateSyncObj) {
+                               if (fStatisticsUpdateBusy) {
+                                       fStatisticsUpdatePending = true;
+                                       fStatisticsUpdateRange = range;
+                                       return;
+                               } else {
+                                       fStatisticsUpdateBusy = true;
+                               }
+                       }
+
+                       int index = 0;
+                       for (StatisticsTreeNode node : ((StatisticsTreeNode) treeViewer.getInput()).getChildren()) {
+                               index += (int) node.getValue().nbEvents;
+                       }
+
+                       // send the initial request, to start filling up model
+                       //eventRequest(fStatisticsUpdateIndex, nbRequested, fStatisticsUpdateStartTime, clearingData, ExecutionType.BACKGROUND);
+                       eventRequest(index, range, clearingData, ExecutionType.BACKGROUND);
+               } else {
+                       TraceDebug.debug("No selected experiment information available"); //$NON-NLS-1$
+               }
+       }
+
+       /*
+        * (non-Javadoc)
+        * 
+        * @see
+        * org.eclipse.linuxtools.lttng.ui.views.common.AbsTimeUpdateView#displayModel
+        * (org.eclipse.linuxtools.tmf.ui.viewers.timeAnalysis.model.
+        * ITmfTimeAnalysisEntry[], long, long, boolean, long, long,
+        * java.lang.Object)
+        */
+       @Override
+       protected void displayModel(ITmfTimeAnalysisEntry[] items, long startBoundTime, long endBoundTime,
+                       boolean updateTimeBounds, long startVisibleWindow, long endVisibleWindow, Object source) {
+               // No applicable to statistics view
+       }
+
+       /*
+        * (non-Javadoc)
+        * 
+        * @see org.eclipse.linuxtools.lttng.ui.views.common.AbsTimeUpdateView#
+        * getParamsUpdater()
+        */
+       @Override
+       protected ParamsUpdater getParamsUpdater() {
+               // Not applicable to statistics view
+               return null;
+       }
+
+       @Override
+       protected ItemContainer<?> getItemContainer() {
+               // Not applicable to statistics view
+               return null;
+       }
+       
+       /*
+        * (non-Javadoc)
+        * @see org.eclipse.linuxtools.lttng.ui.views.common.AbsTimeUpdateView#getProviderId()
+        */
+       @Override
+       protected int getProviderId() { 
+           return LttngCoreProviderFactory.STATISTICS_LTTNG_SYTH_EVENT_PROVIDER; 
        }
-}
+}
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