public class TaggedLabelDecorator
implements ILightweightLabelDecorator, ITagAssociationManagerListener {
private static final ImageDescriptor OVERLAY =
TaggerActivator.imageDescriptorFromPlugin(
TaggerActivator.getDefault().getBundle().getSymbolicName(), "icons/tagger_labeldeco.gif");
private final List<ILabelProviderListener> labelProviderListeners =
new LinkedList<ILabelProviderListener>();
public TaggedLabelDecorator() {
TagAssociationManager.getInstance().addTagAssociationListener(this);
}
public void dispose() {
TagAssociationManager.getInstance().removeTagAssociationListener(this);
}
public void decorate(Object element, IDecoration decoration) {
try {
final IResource resource = (IResource) element;
if (resource.exists() && TaggedMarkerHelper.getMarker(resource) != null) {
decoration.addOverlay(
OVERLAY,
TaggerActivator.getDefault()
.getPreferenceStore()
.getInt(PreferenceConstants.POSITION_LABEL_DECORATION.getKey()));
}
} catch (CoreException ce) {
TaggerLog.error("Unable to decorate resource: " + ce.getMessage(), ce);
}
}
public void addListener(ILabelProviderListener listener) {
if (!labelProviderListeners.contains(listener)) {
labelProviderListeners.add(listener);
}
}
public void removeListener(ILabelProviderListener listener) {
labelProviderListeners.remove(listener);
}
public boolean isLabelProperty(Object element, String property) {
return false;
}
public void handleTagAssociationEvent(TagAssociationEvent tme) {
fireLabelProviderEvent(new LabelProviderChangedEvent(this, tme.getResource()));
}
private void fireLabelProviderEvent(LabelProviderChangedEvent evt) {
for (ILabelProviderListener listener : labelProviderListeners) {
listener.labelProviderChanged(evt);
}
}
}
public void decorate(Object element, IDecoration decoration) {
try {
final IResource resource = (IResource) element;
if (resource.exists() && TaggedMarkerHelper.getMarker(resource) != null) {
decoration.addOverlay(
OVERLAY,
TaggerActivator.getDefault()
.getPreferenceStore()
.getInt(PreferenceConstants.POSITION_LABEL_DECORATION.getKey()));
}
} catch (CoreException ce) {
TaggerLog.error("Unable to decorate resource: " + ce.getMessage(), ce);
}
}