--- /dev/null
+/*
+ * 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: CssAnnotationHover.java,v 1.1 2004-09-02 18:11:48 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.text;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.Position;
+import org.eclipse.jface.text.source.Annotation;
+import org.eclipse.jface.text.source.IAnnotationHover;
+import org.eclipse.jface.text.source.IAnnotationModel;
+import org.eclipse.jface.text.source.ISourceViewer;
+
+
+/**
+ * Implements simple annotation hover to show the associated messages.
+ */
+public class CssAnnotationHover implements IAnnotationHover {
+ /*
+ * @see IVerticalRulerHover#getHoverInfo(ISourceViewer, int)
+ */
+ public String getHoverInfo(ISourceViewer sourceViewer, int lineNumber) {
+ List annotations = getAnnotationsForLine(sourceViewer, lineNumber);
+ if (annotations != null) {
+ List messages = new ArrayList();
+
+ Iterator e = annotations.iterator();
+ while (e.hasNext()) {
+ Annotation annotation = (Annotation) e.next();
+ String message = annotation.getText();
+ if (message != null) {
+ message = message.trim();
+ if (message.length() > 0) {
+ messages.add(message);
+ }
+ }
+ }
+
+ if (messages.size() == 1) {
+ return (String) messages.get(0);
+ }
+
+ if (messages.size() > 1) {
+ return formatMessages(messages);
+ }
+ }
+
+ return null;
+ }
+
+ /**
+ * Formats multiple annotation messages for display.
+ */
+ private String formatMessages(List messages) {
+ StringBuffer buffer = new StringBuffer();
+
+ Iterator e = messages.iterator();
+ while (e.hasNext()) {
+ buffer.append("- "); //$NON-NLS-1$
+ buffer.append(e.next());
+ buffer.append('\n');
+ }
+
+ return buffer.toString();
+ }
+
+ /**
+ * Returns annotations for the ruler's line of activity.
+ */
+ private List getAnnotationsForLine(ISourceViewer viewer, int line) {
+ IDocument document = viewer.getDocument();
+
+ IAnnotationModel model = viewer.getAnnotationModel();
+ if (model == null) {
+ return null;
+ }
+
+ List retVal = new ArrayList();
+
+ Iterator e = model.getAnnotationIterator();
+ while (e.hasNext()) {
+ Annotation a = (Annotation) e.next();
+ Position position = model.getPosition(a);
+ if (position != null) {
+ try {
+ int annotationLine = document
+ .getLineOfOffset(position.getOffset());
+ if (annotationLine == line) {
+ retVal.add(a);
+ }
+ } catch (BadLocationException e1) {
+ // ignore
+ }
+ }
+ }
+
+ return retVal;
+ }
+}