org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/control/dialogs/EnableUstEventsComposite.java

   1 /**********************************************************************
   2  * Copyright (c) 2012 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  *   Bernd Hufmann - Initial API and implementation
  11  **********************************************************************/
  12 package org.eclipse.linuxtools.lttng.ui.views.control.dialogs;
  13
  14 import java.util.ArrayList;
  15 import java.util.HashSet;
  16 import java.util.List;
  17 import java.util.Set;
  18
  19 import org.eclipse.jface.dialogs.MessageDialog;
  20 import org.eclipse.jface.viewers.CheckStateChangedEvent;
  21 import org.eclipse.jface.viewers.CheckboxTreeViewer;
  22 import org.eclipse.jface.viewers.ICheckStateListener;
  23 import org.eclipse.linuxtools.lttng.ui.views.control.Messages;
  24 import org.eclipse.linuxtools.lttng.ui.views.control.TraceControlContentProvider;
  25 import org.eclipse.linuxtools.lttng.ui.views.control.TraceControlLabelProvider;
  26 import org.eclipse.linuxtools.lttng.ui.views.control.model.ITraceControlComponent;
  27 import org.eclipse.linuxtools.lttng.ui.views.control.model.LogLevelType;
  28 import org.eclipse.linuxtools.lttng.ui.views.control.model.TraceLogLevel;
  29 import org.eclipse.linuxtools.lttng.ui.views.control.model.impl.BaseEventComponent;
  30 import org.eclipse.linuxtools.lttng.ui.views.control.model.impl.TargetNodeComponent;
  31 import org.eclipse.linuxtools.lttng.ui.views.control.model.impl.TraceProviderGroup;
  32 import org.eclipse.linuxtools.lttng.ui.views.control.model.impl.UstProviderComponent;
  33 import org.eclipse.swt.SWT;
  34 import org.eclipse.swt.custom.CCombo;
  35 import org.eclipse.swt.events.SelectionAdapter;
  36 import org.eclipse.swt.events.SelectionEvent;
  37 import org.eclipse.swt.graphics.Image;
  38 import org.eclipse.swt.layout.GridData;
  39 import org.eclipse.swt.layout.GridLayout;
  40 import org.eclipse.swt.widgets.Button;
  41 import org.eclipse.swt.widgets.Composite;
  42 import org.eclipse.swt.widgets.Group;
  43 import org.eclipse.swt.widgets.Label;
  44 import org.eclipse.swt.widgets.Text;
  45
  46 /**
  47  * <b><u>EnableUstEventsComposite</u></b>
  48  * <p>
  49  * A composite for collecting information about UST events to be enabled.
  50  * </p>
  51  */
  52 public class EnableUstEventsComposite extends Composite implements IEnableUstEvents  {
  53
  54     // ------------------------------------------------------------------------
  55     // Constants
  56     // ------------------------------------------------------------------------
  57
  58     private enum GroupEnum { TRACEPOINTS, WILDCARD, LOGLEVEL };
  59
  60     // ------------------------------------------------------------------------
  61     // Attributes
  62     // ------------------------------------------------------------------------
  63
  64     /**
  65      * A button to enable/disable the tracepoints group
  66      */
  67     private Button fTracepointsActivateButton;
  68     /**
  69      * A tree viewer for diplaying and selection of available tracepoints.
  70      */
  71     private CheckboxTreeViewer fTracepointsViewer;
  72     /**
  73      * A button to enable/disable the wildcard group
  74      */
  75     private Button fWildcardActivateButton;
  76     /**
  77      * A Text field for the event's wildcard.
  78      */
  79     private Text fWildcardText;
  80     /**
  81      * A button to enable/disable the log level group
  82      */
  83     private Button fLogLevelActivateButton;
  84     /**
  85      * A Text field for the event name for the log level enablement.
  86      */
  87     private Text fLogLevelEventNameText;
  88     /**
  89      * A Combo box for selecting the log level.
  90      */
  91     private CCombo fLogLevelCombo;
  92     /**
  93      * A button for selecting the log level (range 0 to level).
  94      */
  95     private Button fLogLevelButton;
  96     /**
  97      * A button for selecting the specified log level only.
  98      */
  99     private Button fLogLevelOnlyButton;
 100     /**
 101      * The referenced trace provider group containing the UST providers
 102      * component which contains a list of available tracepoints.
 103      */
 104     private TraceProviderGroup fProviderGroup;
 105     /**
 106      * The flag indicating that tracepoints are selected.
 107      */
 108     private boolean fIsTracepoints;
 109     /**
 110      * The flag indicating that all tracepoints (across providers) are selected.
 111      */
 112     private boolean fIsAllTracepoints;
 113     /**
 114      * The list of tracepoints to be enabled.
 115      */
 116     private List<String> fSelectedEvents;
 117     /**
 118      * The flag indicating that all wildcard are selected..
 119      */
 120     private boolean fIsWildcard;
 121     /**
 122      * The wildcard if wildcard is selected.
 123      */
 124     private String fWildcard;
 125     /**
 126      *The flag indicating that all log level are selected.
 127      */
 128     private boolean fIsLogLevel;
 129     /**
 130      * The event name for the log level enablement.
 131      */
 132     private String fLogLevelEventName;
 133     /**
 134      * The type of the log level (loglevel or loglevel-only)
 135      */
 136     private LogLevelType fLogLevelType;
 137     /**
 138      * The actual selected log level.
 139      */
 140     private TraceLogLevel fLogLevel;
 141
 142     // ------------------------------------------------------------------------
 143     // Constructors
 144     // ------------------------------------------------------------------------
 145     /**
 146      * Constructor
 147      * @param parent - a parent composite
 148      * @Param style - a compsite style
 149      * @param providerGroup - the trace provider group
 150      */
 151     public EnableUstEventsComposite(Composite parent, int style, TraceProviderGroup providerGroup) {
 152         super(parent, style);
 153         fProviderGroup = providerGroup;
 154     }
 155
 156     // ------------------------------------------------------------------------
 157     // Accessors
 158     // ------------------------------------------------------------------------
 159
 160     /*
 161      * (non-Javadoc)
 162      * @see org.eclipse.linuxtools.lttng.ui.views.control.dialogs.IEnableUstEvents#isTracepoints()
 163      */
 164     @Override
 165     public boolean isTracepoints() {
 166         return fIsTracepoints;
 167     }
 168
 169     /*
 170      * (non-Javadoc)
 171      * @see org.eclipse.linuxtools.lttng.ui.views.control.dialogs.IEnableUstEvents#isAllTracePoints()
 172      */
 173     @Override
 174     public boolean isAllTracePoints() {
 175         return fIsAllTracepoints;
 176     }
 177
 178     /*
 179      * (non-Javadoc)
 180      * @see org.eclipse.linuxtools.lttng.ui.views.control.dialogs.IEnableUstEvents#getEventNames()
 181      */
 182     @Override
 183     public List<String> getEventNames() {
 184         return new ArrayList<String>(fSelectedEvents);
 185     }
 186
 187     /*
 188      * (non-Javadoc)
 189      * @see org.eclipse.linuxtools.lttng.ui.views.control.dialogs.IEnableUstEvents#isWildcard()
 190      */
 191     @Override
 192     public boolean isWildcard() {
 193         return fIsWildcard;
 194     }
 195
 196     /*
 197      * (non-Javadoc)
 198      * @see org.eclipse.linuxtools.lttng.ui.views.control.dialogs.IEnableUstEvents#getWildcard()
 199      */
 200     @Override
 201     public String getWildcard() {
 202         return "\"" + fWildcard + "\"";  //$NON-NLS-1$//$NON-NLS-2$
 203     }
 204
 205     /*
 206      * (non-Javadoc)
 207      * @see org.eclipse.linuxtools.lttng.ui.views.control.dialogs.IEnableUstEvents#isLogLevel()
 208      */
 209     @Override
 210     public boolean isLogLevel() {
 211         return fIsLogLevel;
 212     }
 213
 214     /*
 215      * (non-Javadoc)
 216      * @see org.eclipse.linuxtools.lttng.ui.views.control.dialogs.IEnableUstEvents#getLogLevelType()
 217      */
 218     @Override
 219     public LogLevelType getLogLevelType() {
 220         return fLogLevelType;
 221     }
 222
 223     /*
 224      * (non-Javadoc)
 225      * @see org.eclipse.linuxtools.lttng.ui.views.control.dialogs.IEnableUstEvents#getLogLevel()
 226      */
 227     @Override
 228     public TraceLogLevel getLogLevel() {
 229         return fLogLevel;
 230     }
 231
 232     /*
 233      * (non-Javadoc)
 234      * @see org.eclipse.linuxtools.lttng.ui.views.control.dialogs.IEnableUstEvents#getLogLevelEventName()
 235      */
 236     @Override
 237     public String getLogLevelEventName() {
 238         return fLogLevelEventName;
 239     }
 240
 241     // ------------------------------------------------------------------------
 242     // Operations
 243     // ------------------------------------------------------------------------
 244
 245     public void createContent() {
 246
 247         // Tracepoints Group
 248         createTracepointsGroup();
 249
 250         // Wildcard Group
 251         createWildCardGroup();
 252
 253         // Log Level Group
 254         createLogLevelGroup();
 255
 256         // Set default enablements
 257         setEnablements(GroupEnum.TRACEPOINTS);
 258     }
 259
 260     /**
 261     * Validates the kernel composite input data.
 262     * @return true if configured data is valid and can be retrieved.
 263     */
 264     public boolean isValid() {
 265
 266         fIsTracepoints = fTracepointsActivateButton.getSelection();
 267         fIsWildcard = fWildcardActivateButton.getSelection();
 268         fIsLogLevel = fLogLevelActivateButton.getSelection();
 269
 270         fIsAllTracepoints = fTracepointsViewer.getChecked(fProviderGroup);
 271
 272         Set<String> set = new HashSet<String>();
 273         Object[] checkedElements = fTracepointsViewer.getCheckedElements();
 274         fSelectedEvents = new ArrayList<String>();
 275         for (int i = 0; i < checkedElements.length; i++) {
 276             ITraceControlComponent component = (ITraceControlComponent)checkedElements[i];
 277             if (!set.contains(component.getName()) && (component instanceof BaseEventComponent)) {
 278                 set.add(component.getName());
 279                 fSelectedEvents.add(component.getName());
 280             }
 281         }
 282
 283         if (fLogLevelButton.getSelection()) {
 284             fLogLevelType = LogLevelType.LOGLEVEL;
 285         } else if (fLogLevelOnlyButton.getSelection()) {
 286             fLogLevelType = LogLevelType.LOGLEVEL_ONLY;
 287         } else {
 288             fLogLevelType = LogLevelType.LOGLEVEL_NONE;
 289         }
 290
 291         // initialize log level event name string
 292         fLogLevelEventName = null;
 293         String temp = fLogLevelEventNameText.getText();
 294         if (!temp.matches("^[\\s]{0,}$") && !temp.matches("^[a-zA-Z0-9\\-\\_]{1,}$")) { //$NON-NLS-1$ //$NON-NLS-2$
 295             MessageDialog.openError(getShell(),
 296                     Messages.TraceControl_EnableEventsDialogTitle,
 297                     Messages.TraceControl_InvalidLogLevelEventNameError + " (" + temp + ") \n");  //$NON-NLS-1$ //$NON-NLS-2$
 298
 299             return false;
 300         }
 301
 302         if(!temp.matches("\\s*")) { //$NON-NLS-1$
 303           fLogLevelEventName = temp;
 304         }
 305
 306         // initialize log level event name string
 307         fWildcard = null;
 308         temp = fWildcardText.getText();
 309         if (!temp.matches("^[\\s]{0,}$") && !temp.matches("^[a-zA-Z0-9\\-\\_\\*]{1,}$")) { //$NON-NLS-1$ //$NON-NLS-2$
 310             MessageDialog.openError(getShell(),
 311                     Messages.TraceControl_EnableEventsDialogTitle,
 312                     Messages.TraceControl_InvalidWildcardError + " (" + temp + ") \n");  //$NON-NLS-1$ //$NON-NLS-2$
 313
 314             return false;
 315         }
 316
 317         if(!temp.matches("\\s*")) { //$NON-NLS-1$
 318             fWildcard = temp;
 319         }
 320
 321         // validation successful -> call super.okPressed()
 322         return true;
 323     }
 324
 325     // ------------------------------------------------------------------------
 326     // Helper methods
 327     // ------------------------------------------------------------------------
 328
 329     /**
 330      * Creates tracepoints group.
 331      */
 332     private void createTracepointsGroup() {
 333         Group tpMainGroup = new Group(this, SWT.SHADOW_NONE);
 334         tpMainGroup.setText(Messages.TraceControl_EnableEventsTracepointGroupName);
 335         GridLayout layout = new GridLayout(2, false);
 336         tpMainGroup.setLayout(layout);
 337         GridData data = new GridData(GridData.FILL_BOTH);
 338         tpMainGroup.setLayoutData(data);
 339
 340         Composite buttonComposite = new Composite(tpMainGroup, SWT.NONE);
 341         layout = new GridLayout(1, true);
 342         buttonComposite.setLayout(layout);
 343         data = new GridData(SWT.BEGINNING, SWT.CENTER, false, true);
 344         buttonComposite.setLayoutData(data);
 345
 346         fTracepointsActivateButton = new Button(buttonComposite, SWT.RADIO);
 347         fTracepointsActivateButton.setText(Messages.TraceControl_EnableGroupSelectionName);
 348         data = new GridData(GridData.FILL_HORIZONTAL);
 349         fTracepointsActivateButton.setLayoutData(data);
 350         fTracepointsActivateButton.addSelectionListener(new SelectionAdapter() {
 351             @Override
 352             public void widgetSelected(SelectionEvent e) {
 353                 setEnablements(GroupEnum.TRACEPOINTS);
 354             }
 355         });
 356
 357         Group tpGroup = new Group(tpMainGroup, SWT.SHADOW_NONE);
 358         layout = new GridLayout(1, true);
 359         tpGroup.setLayout(layout);
 360         data = new GridData(GridData.FILL_BOTH);
 361         tpGroup.setLayoutData(data);
 362
 363         fTracepointsViewer = new CheckboxTreeViewer(tpGroup, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
 364         fTracepointsViewer.getTree().setToolTipText(Messages.TraceControl_EnableEventsTracepointTreeTooltip);
 365         fTracepointsViewer.setContentProvider(new UstContentProvider());
 366
 367         fTracepointsViewer.setLabelProvider(new UstLabelProvider());
 368         fTracepointsViewer.addCheckStateListener(new UstCheckStateListener());
 369
 370         fTracepointsViewer.setInput(fProviderGroup.getParent());
 371         fTracepointsViewer.getTree().setLayoutData(new GridData(GridData.FILL_BOTH));
 372     }
 373
 374     /**
 375      * Creates wildcard group.
 376      */
 377     private void createWildCardGroup() {
 378         Group wildcardMainGroup = new Group(this, SWT.SHADOW_NONE);
 379         wildcardMainGroup.setText(Messages.TraceControl_EnableEventsWildcardGroupName);
 380         GridLayout layout = new GridLayout(2, false);
 381         wildcardMainGroup.setLayout(layout);
 382         GridData data = new GridData(GridData.FILL_HORIZONTAL);
 383         wildcardMainGroup.setLayoutData(data);
 384
 385         Composite buttonComposite = new Composite(wildcardMainGroup, SWT.NONE);
 386         layout = new GridLayout(1, false);
 387         buttonComposite.setLayout(layout);
 388         data = new GridData(SWT.BEGINNING, SWT.CENTER, false, true);
 389         buttonComposite.setLayoutData(data);
 390
 391         fWildcardActivateButton = new Button(buttonComposite, SWT.RADIO);
 392         fWildcardActivateButton.setText(Messages.TraceControl_EnableGroupSelectionName);
 393         fWildcardActivateButton.setSelection(false);
 394         data = new GridData(GridData.FILL_HORIZONTAL);
 395         fWildcardActivateButton.setLayoutData(data);
 396         fWildcardActivateButton.addSelectionListener(new SelectionAdapter() {
 397             @Override
 398             public void widgetSelected(SelectionEvent e) {
 399                 setEnablements(GroupEnum.WILDCARD);
 400             }
 401         });
 402
 403         Group wildcardGroup = new Group(wildcardMainGroup, SWT.SHADOW_NONE);
 404         layout = new GridLayout(3, true);
 405         wildcardGroup.setLayout(layout);
 406         data = new GridData(GridData.FILL_HORIZONTAL);
 407         wildcardGroup.setLayoutData(data);
 408
 409         Label wildcardLabel = new Label(wildcardGroup, SWT.LEFT);
 410         wildcardLabel.setText(Messages.TraceControl_EnableEventsWildcardLabel);
 411         data = new GridData(GridData.FILL_HORIZONTAL);
 412         data.horizontalSpan = 1;
 413         wildcardLabel.setLayoutData(data);
 414
 415         fWildcardText = new Text(wildcardGroup, SWT.LEFT);
 416         fWildcardText.setToolTipText(Messages.TraceControl_EnableEventsWildcardTooltip);
 417         data = new GridData(GridData.FILL_HORIZONTAL);
 418         data.horizontalSpan = 2;
 419         fWildcardText.setLayoutData(data);
 420     }
 421
 422     /**
 423      * Creates log level group.
 424      */
 425     private void createLogLevelGroup() {
 426         Group logLevelMainGroup = new Group(this, SWT.SHADOW_NONE);
 427         logLevelMainGroup.setText(Messages.TraceControl_EnableEventsLogLevelGroupName);
 428         GridLayout layout = new GridLayout(2, false);
 429         logLevelMainGroup.setLayout(layout);
 430         GridData data = new GridData(GridData.FILL_HORIZONTAL);
 431         logLevelMainGroup.setLayoutData(data);
 432
 433         Composite buttonComposite = new Composite(logLevelMainGroup, SWT.NONE);
 434         layout = new GridLayout(1, false);
 435         buttonComposite.setLayout(layout);
 436         data = new GridData(SWT.BEGINNING, SWT.CENTER, false, true);
 437         buttonComposite.setLayoutData(data);
 438
 439         fLogLevelActivateButton = new Button(buttonComposite, SWT.RADIO);
 440         fLogLevelActivateButton.setText(Messages.TraceControl_EnableGroupSelectionName);
 441         fLogLevelActivateButton.setSelection(false);
 442         data = new GridData(GridData.FILL_HORIZONTAL);
 443         fLogLevelActivateButton.setLayoutData(data);
 444         fLogLevelActivateButton.addSelectionListener(new SelectionAdapter() {
 445             @Override
 446             public void widgetSelected(SelectionEvent e) {
 447                 setEnablements(GroupEnum.LOGLEVEL);
 448             }
 449         });
 450
 451         Group logLevelGroup = new Group(logLevelMainGroup, SWT.SHADOW_NONE);
 452         layout = new GridLayout(3, true);
 453         logLevelGroup.setLayout(layout);
 454         logLevelGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 455
 456         Label logLevelEventNameLabel = new Label(logLevelGroup, SWT.LEFT);
 457         logLevelEventNameLabel.setText(Messages.TraceControl_EnableEventsEventNameLabel);
 458
 459         data = new GridData(GridData.FILL_BOTH);
 460         data.horizontalSpan = 1;
 461         logLevelEventNameLabel.setLayoutData(data);
 462
 463         fLogLevelEventNameText = new Text(logLevelGroup, SWT.LEFT);
 464         fLogLevelEventNameText.setToolTipText(Messages.TraceControl_EnableEventsLoglevelEventNameTooltip);
 465         data = new GridData(GridData.FILL_BOTH);
 466         data.horizontalSpan = 2;
 467         fLogLevelEventNameText.setLayoutData(data);
 468
 469         TraceLogLevel[] levels = TraceLogLevel.values();
 470
 471         String[] levelNames = new String[levels.length - 1];
 472         int k = 0;
 473         for (int i = 0; i < levels.length; i++) {
 474             if (levels[i] != TraceLogLevel.LEVEL_UNKNOWN) {
 475                 levelNames[k++] = levels[i].getInName();
 476             }
 477         }
 478
 479         fLogLevelCombo = new CCombo(logLevelGroup, SWT.READ_ONLY);
 480         fLogLevelCombo.setItems(levelNames);
 481         fLogLevelCombo.setToolTipText(Messages.TraceControl_EnableEventsLogLevelTooltip);
 482         data = new GridData(GridData.FILL_HORIZONTAL);
 483         data.horizontalSpan = 4;
 484         fLogLevelCombo.setLayoutData(data);
 485
 486         fLogLevelButton = new Button(logLevelGroup, SWT.RADIO);
 487         fLogLevelButton.setText(Messages.TraceControl_EnableEventsLogLevelTypeName);
 488         fLogLevelButton.setToolTipText(Messages.TraceControl_EnableEventsLogLevelTypeTooltip);
 489         data = new GridData(GridData.FILL_BOTH);
 490         fLogLevelButton.setLayoutData(data);
 491
 492         fLogLevelOnlyButton = new Button(logLevelGroup, SWT.RADIO);
 493         fLogLevelOnlyButton.setText(Messages.TraceControl_EnableEventsLogLevelOnlyTypeName);
 494         fLogLevelOnlyButton.setToolTipText(Messages.TraceControl_EnableEventsLogLevelOnlyTypeTooltip);
 495         data = new GridData(GridData.FILL_BOTH);
 496         fLogLevelButton.setLayoutData(data);
 497     }
 498
 499     /**
 500      * Enable/selects widgets depending on the group specified.
 501      * @param group - group to enable.
 502      */
 503     private void setEnablements(GroupEnum group) {
 504
 505         // Enable/disable trace point items
 506         fTracepointsActivateButton.setSelection(group == GroupEnum.TRACEPOINTS);
 507         fTracepointsViewer.getTree().setEnabled(group == GroupEnum.TRACEPOINTS);
 508
 509         // Enable/disable wildcard items
 510         fWildcardActivateButton.setSelection(group == GroupEnum.WILDCARD);
 511         fWildcardText.setEnabled(group == GroupEnum.WILDCARD);
 512
 513         // Enable/disable log level items
 514         fLogLevelActivateButton.setSelection(group == GroupEnum.LOGLEVEL);
 515         fLogLevelEventNameText.setEnabled(group == GroupEnum.LOGLEVEL);
 516         fLogLevelCombo.setEnabled(group == GroupEnum.LOGLEVEL);
 517         fLogLevelButton.setEnabled(group == GroupEnum.LOGLEVEL);
 518         fLogLevelOnlyButton.setEnabled(group == GroupEnum.LOGLEVEL);
 519     }
 520
 521     // ------------------------------------------------------------------------
 522     // Local classes
 523     // ------------------------------------------------------------------------
 524     /**
 525      * Content provider for the tracepoints tree.
 526      */
 527     final public class UstContentProvider extends TraceControlContentProvider {
 528         @Override
 529         public Object[] getChildren(Object parentElement) {
 530             if (parentElement instanceof TargetNodeComponent) {
 531                 List<ITraceControlComponent> children = ((ITraceControlComponent)parentElement).getChildren(TraceProviderGroup.class);
 532                 return (ITraceControlComponent[]) children.toArray(new ITraceControlComponent[children.size()]);
 533             }
 534             if (parentElement instanceof TraceProviderGroup) {
 535                 List<ITraceControlComponent> children = ((ITraceControlComponent)parentElement).getChildren(UstProviderComponent.class);
 536                 return (ITraceControlComponent[]) children.toArray(new ITraceControlComponent[children.size()]);
 537             }
 538             if (parentElement instanceof ITraceControlComponent) {
 539                 return ((ITraceControlComponent)parentElement).getChildren();
 540             }
 541             return new Object[0];
 542         }
 543     }
 544
 545     /**
 546      * Content label for the tracepoints tree.
 547      */
 548      final public class UstLabelProvider extends TraceControlLabelProvider {
 549         @Override
 550         public Image getImage(Object element) {
 551             return null;
 552         }
 553         @Override
 554         public String getText(Object element) {
 555             if ((element != null) && (element instanceof TraceProviderGroup)) {
 556                 return Messages.TraceControl_EnableEventsTracepointTreeAllLabel;
 557             }
 558
 559             if ((element != null) && (element instanceof UstProviderComponent)) {
 560                 return Messages.TraceControl_EnableEventsTracepointTreeAllLabel + " - " + ((UstProviderComponent)element).getName(); //$NON-NLS-1$
 561             }
 562             return super.getText(element);
 563         }
 564     }
 565
 566     /**
 567      * Check state listener for the tracepoints tree.
 568      */
 569     final public class UstCheckStateListener implements ICheckStateListener {
 570         @Override
 571         public void checkStateChanged(CheckStateChangedEvent event) {
 572             if (event.getChecked()) {
 573                 if (event.getElement() instanceof TraceProviderGroup) {
 574                     fTracepointsViewer.setSubtreeChecked(event.getElement(), true);
 575                 }
 576                 if (event.getElement() instanceof UstProviderComponent) {
 577                     fTracepointsViewer.setSubtreeChecked(event.getElement(), true);
 578                 }
 579             } else {
 580                 if (event.getElement() instanceof TraceProviderGroup) {
 581                     fTracepointsViewer.setSubtreeChecked(event.getElement(), true);
 582                 }
 583                 if (event.getElement() instanceof UstProviderComponent) {
 584                     ITraceControlComponent component = (ITraceControlComponent) event.getElement();
 585                     fTracepointsViewer.setSubtreeChecked(event.getElement(), false);
 586                     fTracepointsViewer.setChecked(component.getParent(), false);
 587                 } else {
 588                     ITraceControlComponent component = (ITraceControlComponent) event.getElement();
 589                     fTracepointsViewer.setChecked(component.getParent(), false);
 590                     fTracepointsViewer.setChecked(component.getParent().getParent(), false);
 591                 }
 592             }
 593         }
 594     }
 595 }