intial source from ttp://www.sf.net/projects/wdte

[phpeclipse.git] / archive / net.sourceforge.phpeclipse.css.ui / src / net / sourceforge / phpeclipse / css / ui / internal / text / CssTextHover.java

diff --git a/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/text/CssTextHover.java b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/text/CssTextHover.java
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+++ b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/text/CssTextHover.java
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+/*
+ * Copyright (c) 2003-2004 Christopher Lenz and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     Christopher Lenz - initial API and implementation
+ * 
+ * $Id: CssTextHover.java,v 1.1 2004-09-02 18:11:48 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.text;
+
+import java.util.Iterator;
+
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextHover;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.Position;
+import org.eclipse.jface.text.source.Annotation;
+import org.eclipse.jface.text.source.IAnnotationModel;
+
+
+/**
+ * Implements simple annotation hover to show the associated messages.
+ */
+public class CssTextHover implements ITextHover {
+       /**
+        * This hovers annotation model.
+        */
+       private IAnnotationModel model;
+
+       /**
+        * Creates a new annotation hover.
+        * 
+        * @param model this hover's annotation model
+        */
+       public CssTextHover(IAnnotationModel model)  {
+               this.model = model;
+       }
+
+       /*
+        * @see ITextHover#getHoverInfo(ITextViewer, IRegion)
+        */
+       public String getHoverInfo(ITextViewer textViewer, IRegion region) {
+               Iterator e = model.getAnnotationIterator();
+               while (e.hasNext()) {
+                       Annotation a = (Annotation) e.next();
+                       Position p = model.getPosition(a);
+                       if (p.overlapsWith(region.getOffset(), region.getLength())) {
+                               String text = a.getText();
+                               if ((text != null) && (text.trim().length() > 0)) {
+                                       return text;
+                               }
+                       }
+               }
+
+               return null;
+       }
+
+       /*
+        * @see ITextHover#getHoverRegion(ITextViewer, int)
+        */
+       public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
+               return CssWordFinder.findWord(textViewer.getDocument(), offset);
+       }
+}