content: /*******************************************************************************
   * Copyright (c) 2000, 2008 IBM Corporation and others.
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.javaeditor;
  
  import java.util.Iterator;
  import java.util.ResourceBundle;
  
  import org.eclipse.jface.preference.IPreferenceStore;
  import org.eclipse.jface.text.IDocument;
  import org.eclipse.jface.text.ITextOperationTarget;
  import org.eclipse.jface.text.Position;
  import org.eclipse.jface.text.source.Annotation;
  import org.eclipse.jface.text.source.IAnnotationAccessExtension;
  import org.eclipse.jface.text.source.ISourceViewer;
  import org.eclipse.jface.text.source.IVerticalRulerInfo;
  import org.eclipse.swt.widgets.Event;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.ui.editors.text.EditorsUI;
  import org.eclipse.ui.texteditor.AbstractMarkerAnnotationModel;
  import org.eclipse.ui.texteditor.AnnotationPreference;
  import org.eclipse.ui.texteditor.AnnotationPreferenceLookup;
  import org.eclipse.ui.texteditor.ITextEditor;
  import org.eclipse.ui.texteditor.ITextEditorExtension;
  import org.eclipse.ui.texteditor.SelectMarkerRulerAction;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
  import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
  import org.eclipse.wst.jsdt.internal.ui.text.correction.JavaCorrectionProcessor;
  import org.eclipse.wst.jsdt.internal.ui.text.correction.QuickAssistLightBulbUpdater.AssistAnnotation;
  import org.eclipse.wst.jsdt.ui.PreferenceConstants;
  
  /**
   * Action which gets triggered when selecting (annotations) in the vertical ruler.
   *
   * <p>
   * Was originally called >code>JavaSelectMarkerRulerAction</code>.
   * </p>
   */
  public class JavaSelectAnnotationRulerAction extends SelectMarkerRulerAction {
  
  	private ITextEditor fTextEditor;
  	private Position fPosition;
  	private Annotation fAnnotation;
  	private AnnotationPreferenceLookup fAnnotationPreferenceLookup;
  	private IPreferenceStore fStore;
  	private boolean fHasCorrection;
  	private ResourceBundle fBundle;
  
  	public JavaSelectAnnotationRulerAction(ResourceBundle bundle, String prefix, ITextEditor editor, IVerticalRulerInfo ruler) {
  		super(bundle, prefix, editor, ruler);
  		fBundle= bundle;
  		fTextEditor= editor;
  
  		fAnnotationPreferenceLookup= EditorsUI.getAnnotationPreferenceLookup();
  		fStore= JavaScriptPlugin.getDefault().getCombinedPreferenceStore();
  
  		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.JAVA_SELECT_MARKER_RULER_ACTION);
  	}
  
  	public void run() {
  		if (fStore.getBoolean(PreferenceConstants.EDITOR_ANNOTATION_ROLL_OVER))
  			return;
  		
  		runWithEvent(null);
  	}
  	
  	/*
  	 * @see org.eclipse.jface.action.IAction#runWithEvent(org.eclipse.swt.widgets.Event)
  	 * 
  	 */
  	public void runWithEvent(Event event) {
  		if (fAnnotation instanceof OverrideIndicatorManager.OverrideIndicator) {
  			((OverrideIndicatorManager.OverrideIndicator)fAnnotation).open();
  			return;
  		}
  
  		if (fHasCorrection) {
  			ITextOperationTarget operation= (ITextOperationTarget) fTextEditor.getAdapter(ITextOperationTarget.class);
  			final int opCode= ISourceViewer.QUICK_ASSIST;
  			if (operation != null && operation.canDoOperation(opCode)) {
  				fTextEditor.selectAndReveal(fPosition.getOffset(), fPosition.getLength());
  				operation.doOperation(opCode);
  			}
  			return;
  		}
  
  		super.run();
  	}
  
  	public void update() {
  		findJavaAnnotation();
  		setEnabled(true); // super.update() might change this later
  
  		if (fAnnotation instanceof OverrideIndicatorManager.OverrideIndicator) {
  			initialize(fBundle, "JavaSelectAnnotationRulerAction.OpenSuperImplementation."); //$NON-NLS-1$
  			return;
  		}
  		if (fHasCorrection) {
  			if (fAnnotation instanceof AssistAnnotation)
  				initialize(fBundle, "JavaSelectAnnotationRulerAction.QuickAssist."); //$NON-NLS-1$
  			else
  				initialize(fBundle, "JavaSelectAnnotationRulerAction.QuickFix."); //$NON-NLS-1$
  			return;
  		}
  
  		initialize(fBundle, "JavaSelectAnnotationRulerAction.GotoAnnotation."); //$NON-NLS-1$;
  		super.update();
  	}
  
  	private void findJavaAnnotation() {
  		fPosition= null;
  		fAnnotation= null;
  		fHasCorrection= false;
  
  		AbstractMarkerAnnotationModel model= getAnnotationModel();
  		IAnnotationAccessExtension annotationAccess= getAnnotationAccessExtension();
  
  		IDocument document= getDocument();
  		if (model == null)
  			return ;
  
  		boolean hasAssistLightbulb= fStore.getBoolean(PreferenceConstants.EDITOR_QUICKASSIST_LIGHTBULB);
  
  		Iterator iter= model.getAnnotationIterator();
  		int layer= Integer.MIN_VALUE;
  
  		while (iter.hasNext()) {
  			Annotation annotation= (Annotation) iter.next();
  			if (annotation.isMarkedDeleted())
  				continue;
  
  			int annotationLayer= layer;
  			if (annotationAccess != null) {
  				annotationLayer= annotationAccess.getLayer(annotation);
  				if (annotationLayer < layer)
  					continue;
  			}
  
  			Position position= model.getPosition(annotation);
  			if (!includesRulerLine(position, document))
  				continue;
  
  			boolean isReadOnly= fTextEditor instanceof ITextEditorExtension && ((ITextEditorExtension)fTextEditor).isEditorInputReadOnly();
  			if (!isReadOnly
  					&& (
  						((hasAssistLightbulb && annotation instanceof AssistAnnotation)
  						|| JavaCorrectionProcessor.hasCorrections(annotation)))) {
  				fPosition= position;
  				fAnnotation= annotation;
  				fHasCorrection= true;
  				layer= annotationLayer;
  				continue;
  			} else {
  				AnnotationPreference preference= fAnnotationPreferenceLookup.getAnnotationPreference(annotation);
  				if (preference == null)
  					continue;
  
  				String key= preference.getVerticalRulerPreferenceKey();
  				if (key == null)
  					continue;
  
  				if (fStore.getBoolean(key)) {
  					fPosition= position;
  					fAnnotation= annotation;
  					fHasCorrection= false;
  					layer= annotationLayer;
  				}
  			}
  		}
  	}
  }
  
  