--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/viewers/TreeViewerFocusCellManager.d	Mon Mar 31 00:47:19 2008 +0200
@@ -0,0 +1,99 @@
+/*******************************************************************************
+ * Copyright (c) 2007 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.viewers.TreeViewerFocusCellManager;
+
+import dwtx.jface.viewers.SWTFocusCellManager;
+import dwtx.jface.viewers.CellNavigationStrategy;
+import dwtx.jface.viewers.TreeViewer;
+import dwtx.jface.viewers.FocusCellHighlighter;
+import dwtx.jface.viewers.ViewerCell;
+import dwtx.jface.viewers.ColumnViewer;
+
+import dwt.DWT;
+import dwt.widgets.Event;
+import dwt.widgets.Item;
+import dwt.widgets.Tree;
+import dwt.widgets.TreeItem;
+
+import dwt.dwthelper.utils;
+
+/**
+ * This class is responsible to provide the concept of cells for {@link Tree}.
+ * This concept is needed to provide features like editor activation with the
+ * keyboard
+ *
+ * @since 3.3
+ *
+ */
+public class TreeViewerFocusCellManager : SWTFocusCellManager {
+    private static /+final+/ CellNavigationStrategy TREE_NAVIGATE;
+    static this(){
+        TREE_NAVIGATE = new class CellNavigationStrategy {
+            public void collapse(ColumnViewer viewer, ViewerCell cellToCollapse,
+                    Event event) {
+                if (cellToCollapse !is null) {
+                    (cast(TreeItem) cellToCollapse.getItem()).setExpanded(false);
+                }
+            }
+
+            public void expand(ColumnViewer viewer, ViewerCell cellToExpand,
+                    Event event) {
+                if (cellToExpand !is null) {
+                    TreeViewer v = cast(TreeViewer) viewer;
+                    v.setExpandedState(v
+                            .getTreePathFromItem_package(cast(Item)cellToExpand.getItem()), true);
+                }
+            }
+
+            public bool isCollapseEvent(ColumnViewer viewer,
+                    ViewerCell cellToCollapse, Event event) {
+                return cellToCollapse !is null
+                        && (cast(TreeItem) cellToCollapse.getItem()).getExpanded()
+                        && cellToCollapse.getColumnIndex() is 0
+                        && event.keyCode is DWT.ARROW_LEFT;
+            }
+
+            public bool isExpandEvent(ColumnViewer viewer,
+                    ViewerCell cellToExpand, Event event) {
+                return cellToExpand !is null
+                        && (cast(TreeItem) cellToExpand.getItem()).getItemCount() > 0
+                        && !(cast(TreeItem) cellToExpand.getItem()).getExpanded()
+                        && cellToExpand.getColumnIndex() is 0
+                        && event.keyCode is DWT.ARROW_RIGHT;
+            }
+        };
+    }
+    /**
+     * Create a new manager
+     *
+     * @param viewer
+     *            the viewer the manager is bound to
+     * @param focusDrawingDelegate
+     *            the delegate responsible to highlight selected cell
+     */
+    public this(TreeViewer viewer,
+            FocusCellHighlighter focusDrawingDelegate) {
+        super(viewer, focusDrawingDelegate,TREE_NAVIGATE);
+    }
+
+    ViewerCell getInitialFocusCell() {
+        Tree tree = cast(Tree) getViewer().getControl();
+
+        if( tree.getItemCount() > 0 ) {
+            return getViewer().getViewerRowFromItem_package(tree.getItem(0)).getCell(0);
+        }
+
+        return null;
+    }
+}