Examples of org.eclipse.core.resources.IMarker

org.eclipse.core.resources.IMarker
Markers are a general mechanism for associating notes and meta-data with resources.
Markers themselves are handles in the same way as IResources are handles. Instances of IMarker do not hold the attributes themselves but rather uniquely refer to the attribute container. As such, their state may change underneath the handle with no warning to the holder of the handle.
The Resources plug-in provides a general framework for defining and manipulating markers and provides several standard marker types.

Each marker has:
- a type string, specifying its type (e.g. "org.eclipse.core.resources.taskmarker"),
- an identifier which is unique (relative to a particular resource)
Specific types of markers may carry additional information.

The resources plug-in defines five standard types:
- org.eclipse.core.resources.marker
- org.eclipse.core.resources.taskmarker
- org.eclipse.core.resources.problemmarker
- org.eclipse.core.resources.bookmark
- org.eclipse.core.resources.textmarker
The plug-in also provides an extension point ( org.eclipse.core.resources.markers) into which other plug-ins can install marker type declaration extensions.

Marker types are declared within a multiple inheritance type system. New markers are defined in the plugin.xml file of the declaring plug-in. A valid declaration contains elements as defined by the extension point DTD:
- type - the unique name of the marker type
- super - the list of marker types of which this marker is to be considered a sub-type
- attributes - the list of standard attributes which may be present on this type of marker
- persistent - whether markers of this type should be persisted by the platform

    {
        assert attributes != null;


        try
        {
            IMarker marker = resource.createMarker(type);
            marker.setAttributes(attributes);
        }
        catch (CoreException e)
        {
            // should not happen
            log.log(StatusFactory.createError(pluginId, "unable to create marker", e));

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   * based upon the properties of the underlying marker.
   */
  protected void initialize() {
    
    fImageType= NO_IMAGE;
    IMarker marker= getMarker();


    if (MarkerUtilities.isMarkerType(marker, IBreakpoint.BREAKPOINT_MARKER)) {


      if (fPresentation == null)
        fPresentation= DebugUITools.newDebugModelPresentation();


      setImage(null); // see bug 32469
      setLayer(4);
      fImageType= BREAKPOINT_IMAGE;


      fType= AnnotationType.UNKNOWN;


    } else {


      fType= AnnotationType.UNKNOWN;
      if (marker.exists()) {
        try {


          if (marker.isSubtypeOf(Constants.PROBLEM_MARKER)) {
            int severity= marker.getAttribute(IMarker.SEVERITY, -1);
            switch (severity) {
              case IMarker.SEVERITY_ERROR:
                fType= AnnotationType.ERROR;
                break;
              case IMarker.SEVERITY_WARNING:
                fType= AnnotationType.WARNING;
                break;
            }
          } else if (marker.isSubtypeOf(IMarker.TASK))
            fType= AnnotationType.TASK;
            else if (marker.isSubtypeOf(IMarker.BOOKMARK))
            fType= AnnotationType.BOOKMARK;
            else if (marker.isSubtypeOf(IMarker.TEXT))
            fType=AnnotationType.OCCURRENCE;


        } catch(CoreException e) {
          //PerlDebugPlugin.log(e);
        }

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  /*
   * @see IJavaAnnotation#getMessage()
   */
  public String getMessage() {
    IMarker marker= getMarker();
    if (marker == null || !marker.exists())
      return ""; //$NON-NLS-1$
    else
      return marker.getAttribute(IMarker.MESSAGE, ""); //$NON-NLS-1$
  }

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   */
  public Image getImage(Display display) {
    if (fImageType == BREAKPOINT_IMAGE) {
      Image result= super.getImage(display);
      if (result == null) {
        IMarker marker= getMarker();
        if (marker != null && marker.exists()) {
          result= fPresentation.getImage(getMarker());
          setImage(result);
        }
      }
      return result;

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  public static List getMarkersForLine(IResource resource, int aLine) {
    List markers = new ArrayList();
    try {
      IMarker[] allMarkers = resource.findMarkers(null, true, IResource.DEPTH_ONE);
      for(int i = 0; i < allMarkers.length; i++) {
        IMarker marker = allMarkers[i];
                Integer lineNr = (Integer) marker.getAttribute(IMarker.LINE_NUMBER);
        if(lineNr != null && lineNr.intValue() == aLine) {
          markers.add(marker);
        }
      }
    } catch (Exception e) {

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         * gather all marker changes from the delta. be sure to do this in the
         * calling thread, as the delta is destroyed when this method returns
         */
        IMarkerDelta[] markerDeltas = event.findMarkerDeltas(FindBugsMarker.NAME, true);
        for (IMarkerDelta mdelta : markerDeltas) {
            IMarker marker = mdelta.getMarker();
            if (marker == null) {
                continue;
            }
            DeltaInfo deltaInfo = new DeltaInfo(marker, mdelta.getKind());
            if (BugContentProvider.DEBUG) {

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    public void selectionChanged(IWorkbenchPart thePart, ISelection theSelection) {
        if (thePart == handler || !handler.isVisible()) {
            return;
        }
        IMarker marker = MarkerUtil.getMarkerFromSingleSelection(theSelection);
        // only handle a null if it's from the bug explorer. this way if the
        // user
        // selects a bug pattern or other "folder" in the tree, the annotation
        // view
        // and the property view are cleared. BUT if the user clicks into

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                    || adaptableObject instanceof DetectorFactory || adaptableObject instanceof Plugin
                    || adaptableObject instanceof BugInstance.XmlProps || adaptableObject instanceof BugGroup
                    || adaptableObject instanceof BugAnnotation) {
                return new PropertySource(adaptableObject);
            }
            IMarker marker = Util.getAdapter(IMarker.class, adaptableObject);
            if (!MarkerUtil.isFindBugsMarker(marker)) {
                return null;
            }
            return new MarkerPropertySource(marker);
        }

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                return imageRegistry.get(prio.iconName());
            }


        }
        if (element instanceof IMarker) {
            IMarker marker = (IMarker) element;
            if (!marker.exists()) {
                return null;
            }
        }
        return wbProvider.getImage(element);
    }

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                str += " - " + cloudName;
            }
            return str;
        }
        if (element instanceof IMarker) {
            IMarker marker = (IMarker) element;
            if (!marker.exists()) {
                return null;
            }
        }
        if (element instanceof IStructuredSelection) {
            return getDescriptionAndBugCount(((IStructuredSelection) element).toArray());

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