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   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 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
  12 package net.sourceforge.phpdt.internal.ui.text.java.hover;
  13
  14 import java.util.Iterator;
  15
  16 import net.sourceforge.phpdt.internal.ui.text.HTMLPrinter;
  17 //import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  18 import net.sourceforge.phpeclipse.phpeditor.JavaAnnotationIterator;
  19 import net.sourceforge.phpeclipse.phpeditor.PHPUnitEditor;
  20 import net.sourceforge.phpeclipse.ui.WebUI;
  21
  22 import org.eclipse.jface.preference.IPreferenceStore;
  23 import org.eclipse.jface.text.IRegion;
  24 import org.eclipse.jface.text.ITextViewer;
  25 import org.eclipse.jface.text.Position;
  26 import org.eclipse.jface.text.source.Annotation;
  27 import org.eclipse.jface.text.source.IAnnotationModel;
  28 import org.eclipse.ui.IEditorPart;
  29 import org.eclipse.ui.editors.text.EditorsUI;
  30 import org.eclipse.ui.texteditor.AnnotationPreference;
  31 import org.eclipse.ui.texteditor.DefaultMarkerAnnotationAccess;
  32 import org.eclipse.ui.texteditor.IDocumentProvider;
  33
  34 /**
  35  * Abstract super class for annotation hovers.
  36  *
  37  * @since 3.0
  38  */
  39 public abstract class AbstractAnnotationHover extends
  40                 AbstractJavaEditorTextHover {
  41
  42         private IPreferenceStore fStore = WebUI.getDefault()
  43                         .getCombinedPreferenceStore();
  44
  45         private DefaultMarkerAnnotationAccess fAnnotationAccess = new DefaultMarkerAnnotationAccess();
  46
  47         private boolean fAllAnnotations;
  48
  49         public AbstractAnnotationHover(boolean allAnnotations) {
  50                 fAllAnnotations = allAnnotations;
  51         }
  52
  53         /*
  54          * Formats a message as HTML text.
  55          */
  56         private String formatMessage(String message) {
  57                 StringBuffer buffer = new StringBuffer();
  58                 HTMLPrinter.addPageProlog(buffer);
  59                 HTMLPrinter.addParagraph(buffer, HTMLPrinter
  60                                 .convertToHTMLContent(message));
  61                 HTMLPrinter.addPageEpilog(buffer);
  62                 return buffer.toString();
  63         }
  64
  65         /*
  66          * @see ITextHover#getHoverInfo(ITextViewer, IRegion)
  67          */
  68         public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
  69
  70                 if (getEditor() == null)
  71                         return null;
  72
  73                 IDocumentProvider provider = WebUI.getDefault()
  74                                 .getCompilationUnitDocumentProvider();
  75                 IAnnotationModel model = provider.getAnnotationModel(getEditor()
  76                                 .getEditorInput());
  77
  78                 if (model != null) {
  79                         Iterator e = new JavaAnnotationIterator(model, true,
  80                                         fAllAnnotations);
  81                         int layer = -1;
  82                         String message = null;
  83                         while (e.hasNext()) {
  84                                 Annotation a = (Annotation) e.next();
  85
  86                                 AnnotationPreference preference = getAnnotationPreference(a);
  87                                 if (preference == null
  88                                                 || !(preference.getTextPreferenceKey() != null
  89                                                                 && fStore.getBoolean(preference
  90                                                                                 .getTextPreferenceKey()) || (preference
  91                                                                 .getHighlightPreferenceKey() != null && fStore
  92                                                                 .getBoolean(preference
  93                                                                                 .getHighlightPreferenceKey()))))
  94                                         continue;
  95
  96                                 Position p = model.getPosition(a);
  97
  98                                 int l = fAnnotationAccess.getLayer(a);
  99
 100                                 if (l > layer
 101                                                 && p != null
 102                                                 && p.overlapsWith(hoverRegion.getOffset(), hoverRegion
 103                                                                 .getLength())) {
 104                                         String msg = a.getText();
 105                                         if (msg != null && msg.trim().length() > 0) {
 106                                                 message = msg;
 107                                                 layer = l;
 108                                         }
 109                                 }
 110                         }
 111                         if (layer > -1)
 112                                 return formatMessage(message);
 113                 }
 114
 115                 return null;
 116         }
 117
 118         /*
 119          * @see IJavaEditorTextHover#setEditor(IEditorPart)
 120          */
 121         public void setEditor(IEditorPart editor) {
 122                 if (editor instanceof PHPUnitEditor)
 123                         super.setEditor(editor);
 124                 else
 125                         super.setEditor(null);
 126         }
 127
 128         /**
 129          * Returns the annotation preference for the given annotation.
 130          *
 131          * @param annotation
 132          *            the annotation
 133          * @return the annotation preference or <code>null</code> if none
 134          */
 135         private AnnotationPreference getAnnotationPreference(Annotation annotation) {
 136
 137                 if (annotation.isMarkedDeleted())
 138                         return null;
 139                 return EditorsUI.getAnnotationPreferenceLookup()
 140                                 .getAnnotationPreference(annotation);
 141         }
 142 }