1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4  * License, v. 2.0. If a copy of the MPL was not distributed with this
5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 
7 #ifndef _TraversalRule_H_
8 #define _TraversalRule_H_
9 
10 #include "Pivot.h"
11 
12 namespace mozilla {
13 namespace a11y {
14 
15 class Accessible;
16 
17 /**
18  * Class represents a simple traversal rule.
19  */
20 class TraversalRule final : public PivotRule {
21  public:
22   TraversalRule();
23   explicit TraversalRule(int32_t aGranularity);
24 
25   ~TraversalRule() = default;
26 
27   virtual uint16_t Match(Accessible* aAccessible) override;
28 
29  private:
30   bool IsSingleLineage(Accessible* aAccessible);
31 
32   bool IsFlatSubtree(const Accessible* aAccessible);
33 
34   bool IsListItemBullet(const Accessible* aAccessible);
35 
36   bool HasName(const Accessible* aAccessible);
37 
38   uint16_t DefaultMatch(Accessible* aAccessible);
39 
40   uint16_t LinkMatch(Accessible* aAccessible);
41 
42   uint16_t HeadingMatch(Accessible* aAccessible);
43 
44   uint16_t ControlMatch(Accessible* aAccessible);
45 
46   uint16_t SectionMatch(Accessible* aAccessible);
47 
48   uint16_t LandmarkMatch(Accessible* aAccessible);
49 
50   int32_t mGranularity;
51 };
52 
53 }  // namespace a11y
54 }  // namespace mozilla
55 
56 #endif