///*******************************************************************************
// * Copyright (c) 2007, 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
// * Tom Schindl<tom.schindl@bestsolution.at> - initial API and implementation
// * - fix in bug: 195908, 210752
// *******************************************************************************/
//
//package org.eclipse.jface.viewers;
//
//import org.eclipse.swt.SWT;
//import org.eclipse.swt.widgets.Event;
//import org.eclipse.swt.widgets.Item;
//import org.eclipse.swt.widgets.Tree;
//import org.eclipse.swt.widgets.TreeItem;
//
///**
// * 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 1.0
// *
// */
//public class TreeViewerFocusCellManager extends SWTFocusCellManager {
// private static final CellNavigationStrategy TREE_NAVIGATE = new CellNavigationStrategy() {
// public void collapse(ColumnViewer viewer, ViewerCell cellToCollapse,
// Event event) {
// if (cellToCollapse != null) {
// ((TreeItem) cellToCollapse.getItem()).setExpanded(false);
// }
// }
//
// public void expand(ColumnViewer viewer, ViewerCell cellToExpand,
// Event event) {
// if (cellToExpand != null) {
// TreeViewer v = (TreeViewer) viewer;
// v.setExpandedState(v.getTreePathFromItem((Item) cellToExpand
// .getItem()), true);
// }
// }
//
// public boolean isCollapseEvent(ColumnViewer viewer,
// ViewerCell cellToCollapse, Event event) {
//
// if (cellToCollapse == null) {
// return false;
// }
//
// return cellToCollapse != null
// && ((TreeItem) cellToCollapse.getItem()).getExpanded()
// && event.keyCode == SWT.ARROW_LEFT
// && isFirstColumnCell(cellToCollapse);
// }
//
// public boolean isExpandEvent(ColumnViewer viewer,
// ViewerCell cellToExpand, Event event) {
//
// if (cellToExpand == null) {
// return false;
// }
//
// return cellToExpand != null
// && ((TreeItem) cellToExpand.getItem()).getItemCount() > 0
// && !((TreeItem) cellToExpand.getItem()).getExpanded()
// && event.keyCode == SWT.ARROW_RIGHT
// && isFirstColumnCell(cellToExpand);
// }
//
// private boolean isFirstColumnCell(ViewerCell cell) {
// return cell.getViewerRow().getVisualIndex(cell.getColumnIndex()) == 0;
// }
// };
//
// /**
// * Create a new manager using a default navigation strategy:
// * <ul>
// * <li><code>SWT.ARROW_UP</code>: navigate to cell above</li>
// * <li><code>SWT.ARROW_DOWN</code>: navigate to cell below</li>
// * <li><code>SWT.ARROW_RIGHT</code>: on first column (collapses if item
// * is expanded) else navigate to next visible cell on the right</li>
// * <li><code>SWT.ARROW_LEFT</code>: on first column (expands if item is
// * collapsed) else navigate to next visible cell on the left</li>
// * </ul>
// *
// * @param viewer
// * the viewer the manager is bound to
// * @param focusDrawingDelegate
// * the delegate responsible to highlight selected cell
// */
// public TreeViewerFocusCellManager(TreeViewer viewer,
// FocusCellHighlighter focusDrawingDelegate) {
// this(viewer, focusDrawingDelegate, TREE_NAVIGATE);
// }
//
// /**
// * Create a new manager with a custom navigation strategy
// *
// * @param viewer
// * the viewer the manager is bound to
// * @param focusDrawingDelegate
// * the delegate responsible to highlight selected cell
// * @param navigationStrategy
// * the strategy used to navigate the cells
// */
// public TreeViewerFocusCellManager(TreeViewer viewer,
// FocusCellHighlighter focusDrawingDelegate,
// CellNavigationStrategy navigationStrategy) {
// super(viewer, focusDrawingDelegate, navigationStrategy);
// }
//
// ViewerCell getInitialFocusCell() {
// Tree tree = (Tree) getViewer().getControl();
//
// if (tree.getItemCount() > 0) {
// return getViewer().getViewerRowFromItem(tree.getItem(0)).getCell(0);
// }
//
// return null;
// }
//}