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   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpeclipse.phpeditor;
  12
  13 import net.sourceforge.phpdt.internal.ui.PHPUiImages;
  14 import net.sourceforge.phpdt.ui.PreferenceConstants;
  15
  16 import org.eclipse.jface.resource.ImageDescriptor;
  17 import org.eclipse.jface.resource.ImageRegistry;
  18 import org.eclipse.jface.text.source.Annotation;
  19 import org.eclipse.swt.SWT;
  20 import org.eclipse.swt.graphics.Image;
  21 import org.eclipse.swt.widgets.Display;
  22 import org.eclipse.ui.ISharedImages;
  23 import org.eclipse.ui.PlatformUI;
  24 import org.eclipse.ui.texteditor.IAnnotationImageProvider;
  25
  26 /**
  27  * Image provider for annotations based on Java problem markers.
  28  *
  29  * @since 3.0
  30  */
  31 public class JavaAnnotationImageProvider implements IAnnotationImageProvider {
  32
  33         private final static int NO_IMAGE = 0;
  34
  35         private final static int GRAY_IMAGE = 1;
  36
  37         private final static int OVERLAY_IMAGE = 2;
  38
  39         private final static int QUICKFIX_IMAGE = 3;
  40
  41         private final static int QUICKFIX_ERROR_IMAGE = 4;
  42
  43         private static Image fgQuickFixImage;
  44
  45         private static Image fgQuickFixErrorImage;
  46
  47         private static ImageRegistry fgImageRegistry;
  48
  49         private boolean fShowQuickFixIcon;
  50
  51         private int fCachedImageType;
  52
  53         private Image fCachedImage;
  54
  55         public JavaAnnotationImageProvider() {
  56                 fShowQuickFixIcon = PreferenceConstants.getPreferenceStore()
  57                                 .getBoolean(PreferenceConstants.EDITOR_CORRECTION_INDICATION);
  58         }
  59
  60         /*
  61          * @see org.eclipse.jface.text.source.IAnnotationImageProvider#getManagedImage(org.eclipse.jface.text.source.Annotation)
  62          */
  63         public Image getManagedImage(Annotation annotation) {
  64                 if (annotation instanceof IJavaAnnotation) {
  65                         IJavaAnnotation javaAnnotation = (IJavaAnnotation) annotation;
  66                         int imageType = getImageType(javaAnnotation);
  67                         return getImage(javaAnnotation, imageType, Display.getCurrent());
  68                 }
  69                 return null;
  70         }
  71
  72         /*
  73          * @see org.eclipse.jface.text.source.IAnnotationImageProvider#getImageDescriptorId(org.eclipse.jface.text.source.Annotation)
  74          */
  75         public String getImageDescriptorId(Annotation annotation) {
  76                 // unmanaged images are not supported
  77                 return null;
  78         }
  79
  80         /*
  81          * @see org.eclipse.jface.text.source.IAnnotationImageProvider#getImageDescriptor(java.lang.String)
  82          */
  83         public ImageDescriptor getImageDescriptor(String symbolicName) {
  84                 // unmanaged images are not supported
  85                 return null;
  86         }
  87
  88         private boolean showQuickFix(IJavaAnnotation annotation) {
  89                 // return fShowQuickFixIcon && annotation.isProblem() &&
  90                 // JavaCorrectionProcessor.hasCorrections(annotation);
  91                 return false;
  92         }
  93
  94         private Image getQuickFixImage() {
  95                 if (fgQuickFixImage == null)
  96                         fgQuickFixImage = PHPUiImages
  97                                         .get(PHPUiImages.IMG_OBJS_FIXABLE_PROBLEM);
  98                 return fgQuickFixImage;
  99         }
 100
 101         private Image getQuickFixErrorImage() {
 102                 if (fgQuickFixErrorImage == null)
 103                         fgQuickFixErrorImage = PHPUiImages
 104                                         .get(PHPUiImages.IMG_OBJS_FIXABLE_ERROR);
 105                 return fgQuickFixErrorImage;
 106         }
 107
 108         private ImageRegistry getImageRegistry(Display display) {
 109                 if (fgImageRegistry == null)
 110                         fgImageRegistry = new ImageRegistry(display);
 111                 return fgImageRegistry;
 112         }
 113
 114         private int getImageType(IJavaAnnotation annotation) {
 115                 int imageType = NO_IMAGE;
 116                 if (annotation.hasOverlay())
 117                         imageType = OVERLAY_IMAGE;
 118                 else if (!annotation.isMarkedDeleted()) {
 119                         if (showQuickFix(annotation))
 120                                 imageType = JavaMarkerAnnotation.ERROR_ANNOTATION_TYPE
 121                                                 .equals(annotation.getType()) ? QUICKFIX_ERROR_IMAGE
 122                                                 : QUICKFIX_IMAGE;
 123                 } else {
 124                         imageType = GRAY_IMAGE;
 125                 }
 126                 return imageType;
 127         }
 128
 129         private Image getImage(IJavaAnnotation annotation, int imageType,
 130                         Display display) {
 131                 if (fCachedImageType == imageType)
 132                         return fCachedImage;
 133
 134                 Image image = null;
 135                 switch (imageType) {
 136                 case OVERLAY_IMAGE:
 137                         IJavaAnnotation overlay = annotation.getOverlay();
 138                         image = overlay.getImage(display);
 139                         break;
 140                 case QUICKFIX_IMAGE:
 141                         image = getQuickFixImage();
 142                         break;
 143                 case QUICKFIX_ERROR_IMAGE:
 144                         image = getQuickFixErrorImage();
 145                         break;
 146                 case GRAY_IMAGE: {
 147                         ISharedImages sharedImages = PlatformUI.getWorkbench()
 148                                         .getSharedImages();
 149                         String annotationType = annotation.getType();
 150                         if (JavaMarkerAnnotation.ERROR_ANNOTATION_TYPE
 151                                         .equals(annotationType)) {
 152                                 image = sharedImages.getImage(ISharedImages.IMG_OBJS_ERROR_TSK);
 153                         } else if (JavaMarkerAnnotation.WARNING_ANNOTATION_TYPE
 154                                         .equals(annotationType)) {
 155                                 image = sharedImages.getImage(ISharedImages.IMG_OBJS_WARN_TSK);
 156                         } else if (JavaMarkerAnnotation.INFO_ANNOTATION_TYPE
 157                                         .equals(annotationType)) {
 158                                 image = sharedImages.getImage(ISharedImages.IMG_OBJS_INFO_TSK);
 159                         }
 160                         if (image != null) {
 161                                 ImageRegistry registry = getImageRegistry(display);
 162                                 String key = Integer.toString(image.hashCode());
 163                                 Image grayImage = registry.get(key);
 164                                 if (grayImage == null) {
 165                                         grayImage = new Image(display, image, SWT.IMAGE_GRAY);
 166                                         registry.put(key, grayImage);
 167                                 }
 168                                 image = grayImage;
 169                         }
 170                         break;
 171                 }
 172                 }
 173
 174                 fCachedImageType = imageType;
 175                 fCachedImage = image;
 176                 return fCachedImage;
 177         }
 178 }