case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/javaeditor/OverrideIndicatorImageProvider.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2010 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.ui.javaeditor;
  12
  13 import org.eclipse.swt.graphics.Image;
  14
  15 import org.eclipse.jface.resource.ImageDescriptor;
  16
  17 import org.eclipse.jface.text.source.Annotation;
  18
  19 import org.eclipse.ui.texteditor.IAnnotationImageProvider;
  20
  21 import org.eclipse.jdt.internal.ui.JavaPluginImages;
  22
  23
  24 /**
  25  * Image provider for {@link org.eclipse.jdt.internal.ui.javaeditor.OverrideIndicatorManager.OverrideIndicator} annotations.
  26  *
  27  * @since 3.0
  28  */
  29 public class OverrideIndicatorImageProvider implements IAnnotationImageProvider {
  30
  31         /*
  32          * @see org.eclipse.ui.texteditor.IAnnotationImageProvider#getManagedImage(org.eclipse.jface.text.source.Annotation)
  33          */
  34         private static final String OVERRIDE_IMG_DESC_ID= "JavaPluginImages.DESC_OBJ_OVERRIDES"; //$NON-NLS-1$
  35         private static final String OVERWRITE_IMG_DESC_ID= "JavaPluginImages.DESC_OBJ_IMPLEMENTS"; //$NON-NLS-1$
  36         public Image getManagedImage(Annotation annotation) {
  37                 return null;
  38         }
  39
  40         /*
  41          * @see org.eclipse.ui.texteditor.IAnnotationImageProvider#getImageDescriptorId(org.eclipse.jface.text.source.Annotation)
  42          */
  43         public String getImageDescriptorId(Annotation annotation) {
  44                 if (!isImageProviderFor(annotation))
  45                         return null;
  46
  47                 if (isOverwriting(annotation))
  48                         return OVERWRITE_IMG_DESC_ID;
  49                 else
  50                         return OVERRIDE_IMG_DESC_ID;
  51         }
  52
  53         /*
  54          * @see org.eclipse.ui.texteditor.IAnnotationImageProvider#getImageDescriptor(java.lang.String)
  55          */
  56         public ImageDescriptor getImageDescriptor(String imageDescritporId) {
  57                 if (OVERWRITE_IMG_DESC_ID.equals(imageDescritporId))
  58                         return JavaPluginImages.DESC_OBJ_IMPLEMENTS;
  59                 else if (OVERRIDE_IMG_DESC_ID.equals(imageDescritporId))
  60                         return JavaPluginImages.DESC_OBJ_OVERRIDES;
  61
  62                 return null;
  63         }
  64
  65         private boolean isImageProviderFor(Annotation annotation) {
  66                 return annotation != null && OverrideIndicatorManager.ANNOTATION_TYPE.equals(annotation.getType());
  67         }
  68
  69         private boolean isOverwriting(Annotation annotation) {
  70                 return ((OverrideIndicatorManager.OverrideIndicator)annotation).isOverwriteIndicator();
  71         }
  72 }