1 /* 2 * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.javafx.scene.control.behavior; 27 28 import javafx.scene.Node; 29 import javafx.scene.control.FocusModel; 30 import javafx.scene.control.MultipleSelectionModel; 31 import javafx.scene.control.TreeCell; 32 import javafx.scene.control.TreeItem; 33 import javafx.scene.control.TreeView; 34 import javafx.scene.input.MouseButton; 35 36 import java.util.Collections; 37 38 public class TreeCellBehavior<T> extends CellBehaviorBase<TreeCell<T>> { 39 40 /*************************************************************************** 41 * * 42 * Constructors * 43 * * 44 **************************************************************************/ 45 46 public TreeCellBehavior(final TreeCell<T> control) { 47 super(control, Collections.emptyList()); 48 } 49 50 51 52 /*************************************************************************** 53 * * 54 * Private implementation * 55 * * 56 **************************************************************************/ 57 58 @Override 59 protected MultipleSelectionModel<TreeItem<T>> getSelectionModel() { 60 return getCellContainer().getSelectionModel(); 61 } 62 63 @Override 64 protected FocusModel<TreeItem<T>> getFocusModel() { 65 return getCellContainer().getFocusModel(); 66 } 67 68 @Override 69 protected TreeView<T> getCellContainer() { 70 return getControl().getTreeView(); 71 } 72 73 @Override 74 protected void edit(TreeCell<T> cell) { 75 TreeItem<T> treeItem = cell == null ? null : cell.getTreeItem(); 76 getCellContainer().edit(treeItem); 77 } 78 79 @Override 80 protected void handleClicks(MouseButton button, int clickCount, boolean isAlreadySelected) { 81 // handle editing, which only occurs with the primary mouse button 82 TreeItem<T> treeItem = getControl().getTreeItem(); 83 if (button == MouseButton.PRIMARY) { 84 if (clickCount == 1 && isAlreadySelected) { 85 edit(getControl()); 86 } else if (clickCount == 1) { 87 // cancel editing 88 edit(null); 89 } else if (clickCount == 2 && treeItem.isLeaf()) { 90 // attempt to edit 91 edit(getControl()); 92 } else if (clickCount % 2 == 0) { 93 // try to expand/collapse branch tree item 94 treeItem.setExpanded(! treeItem.isExpanded()); 95 } 96 } 97 } 98 99 @Override protected boolean handleDisclosureNode(double x, double y) { 100 TreeCell<T> treeCell = getControl(); 101 Node disclosureNode = treeCell.getDisclosureNode(); 102 if (disclosureNode != null) { 103 if (disclosureNode.getBoundsInParent().contains(x, y)) { 104 if (treeCell.getTreeItem() != null) { 105 treeCell.getTreeItem().setExpanded(! treeCell.getTreeItem().isExpanded()); 106 } 107 return true; 108 } 109 } 110 return false; 111 } 112 }