--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/source/OverviewRulerHoverManager.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,94 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.jface.text.source.OverviewRulerHoverManager;
+
+import dwt.dwthelper.utils;
+
+
+
+import dwt.custom.StyledText;
+import dwt.graphics.Point;
+import dwt.graphics.Rectangle;
+import dwt.widgets.ScrollBar;
+import dwtx.jface.text.IInformationControlCreator;
+
+/**
+ * This manager controls the layout, content, and visibility of an information
+ * control in reaction to mouse hover events issued by the overview ruler of a
+ * source viewer.
+ *
+ * @since 2.1
+ */
+class OverviewRulerHoverManager : AnnotationBarHoverManager {
+
+    /**
+     * Creates an overview hover manager with the given parameters. In addition,
+     * the hovers anchor is RIGHT and the margin is 5 points to the right.
+     *
+     * @param ruler the overview ruler this manager connects to
+     * @param sourceViewer the source viewer this manager connects to
+     * @param annotationHover the annotation hover providing the information to be displayed
+     * @param creator the information control creator
+     */
+    public OverviewRulerHoverManager(IOverviewRuler ruler, ISourceViewer sourceViewer, IAnnotationHover annotationHover, IInformationControlCreator creator) {
+        super(ruler, sourceViewer, annotationHover, creator);
+        setAnchor(ANCHOR_LEFT);
+        StyledText textWidget= sourceViewer.getTextWidget();
+        if (textWidget !is null) {
+            ScrollBar verticalBar= textWidget.getVerticalBar();
+            if (verticalBar !is null)
+                setMargins(verticalBar.getSize().x, 5);
+        }
+    }
+
+    /*
+     * @see AbstractHoverInformationControlManager#computeInformation()
+     */
+    protected void computeInformation() {
+        Point location= getHoverEventLocation();
+        int line= getVerticalRulerInfo().toDocumentLineNumber(location.y);
+        IAnnotationHover hover= getAnnotationHover();
+        
+        IInformationControlCreator controlCreator= null;
+        if (hover instanceof IAnnotationHoverExtension)
+            controlCreator= ((IAnnotationHoverExtension)hover).getHoverControlCreator();
+        setCustomInformationControlCreator(controlCreator);
+        
+        setInformation(hover.getHoverInfo(getSourceViewer(), line), computeArea(location.y));
+    }
+
+    /**
+     * Determines graphical area covered for which the hover is valid.
+     *
+     * @param y y-coordinate in the vertical ruler
+     * @return the graphical extend where the hover is valid
+     */
+    private Rectangle computeArea(int y) {
+        // This is OK (see constructor)
+        IOverviewRuler overviewRuler= (IOverviewRuler) getVerticalRulerInfo();
+
+        int hover_height= overviewRuler.getAnnotationHeight();
+        int hover_width= getVerticalRulerInfo().getControl().getSize().x;
+
+        // Calculate y-coordinate for hover
+        int hover_y= y;
+        bool hasAnnotation= true;
+        while (hasAnnotation && hover_y > y - hover_height) {
+            hover_y--;
+            hasAnnotation= overviewRuler.hasAnnotation(hover_y);
+        }
+        hover_y++;
+
+        return new Rectangle(0, hover_y, hover_width, hover_height);
+    }
+}