2 * Copyright (C) 2017 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
26 WI.TreeOutlineGroup = class TreeOutlineGroup extends WI.Collection
30 super((object) => object instanceof WI.TreeOutline);
35 static groupForTreeOutline(treeOutline)
37 return treeOutline[WI.TreeOutlineGroup.GroupForTreeOutlineSymbol] || null;
42 get selectedTreeElement()
44 for (let treeOutline of this.items) {
45 if (treeOutline.selectedTreeElement)
46 return treeOutline.selectedTreeElement;
54 itemAdded(treeOutline)
56 console.assert(!treeOutline[WI.TreeOutlineGroup.GroupForTreeOutlineSymbol]);
57 treeOutline[WI.TreeOutlineGroup.GroupForTreeOutlineSymbol] = this;
59 if (treeOutline.selectedTreeElement)
60 this._removeConflictingTreeSelections(treeOutline.selectedTreeElement);
63 itemRemoved(treeOutline)
65 console.assert(treeOutline[WI.TreeOutlineGroup.GroupForTreeOutlineSymbol] === this);
66 treeOutline[WI.TreeOutlineGroup.GroupForTreeOutlineSymbol] = null;
69 didSelectTreeElement(treeElement)
71 // Called by TreeOutline.
76 this._removeConflictingTreeSelections(treeElement);
81 _removeConflictingTreeSelections(treeElement)
83 let selectedTreeOutline = treeElement.treeOutline;
84 console.assert(selectedTreeOutline, "Should have a parent tree outline.");
86 for (let treeOutline of this.items) {
87 if (selectedTreeOutline === treeOutline)
90 if (treeOutline.selectedTreeElement)
91 treeOutline.selectedTreeElement.deselect();
96 WI.TreeOutlineGroup.GroupForTreeOutlineSymbol = Symbol("group-for-tree-outline");