| Sharon Yang | 23a8135b | 2019-09-10 21:10:54 | [diff] [blame^] | 1 | // Copyright 2019 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef FUCHSIA_ENGINE_BROWSER_ACCESSIBILITY_BRIDGE_H_ |
| 6 | #define FUCHSIA_ENGINE_BROWSER_ACCESSIBILITY_BRIDGE_H_ |
| 7 | |
| 8 | #include <fuchsia/accessibility/semantics/cpp/fidl.h> |
| 9 | #include <fuchsia/math/cpp/fidl.h> |
| 10 | #include <fuchsia/ui/views/cpp/fidl.h> |
| 11 | #include <lib/fidl/cpp/binding.h> |
| 12 | |
| 13 | #include "base/macros.h" |
| 14 | #include "fuchsia/engine/web_engine_export.h" |
| 15 | |
| 16 | // This class is the intermediate for accessibility between Chrome and Fuchsia. |
| 17 | // It handles registration to the Fuchsia Semantics Manager, translating events |
| 18 | // and data structures between the two services, and forwarding actions and |
| 19 | // events. |
| 20 | // The lifetime of an instance of AccessibilityBridge is the same as that of a |
| 21 | // View created by FrameImpl. This class refers to the View via the |
| 22 | // caller-supplied ViewRef. |
| 23 | class WEB_ENGINE_EXPORT AccessibilityBridge |
| 24 | : public fuchsia::accessibility::semantics::SemanticListener { |
| 25 | public: |
| 26 | AccessibilityBridge( |
| 27 | fuchsia::accessibility::semantics::SemanticsManagerPtr semantics_manager, |
| 28 | fuchsia::ui::views::ViewRef view_ref); |
| 29 | ~AccessibilityBridge() final; |
| 30 | |
| 31 | private: |
| 32 | // fuchsia::accessibility::semantics::SemanticListener implementation. |
| 33 | void OnAccessibilityActionRequested( |
| 34 | uint32_t node_id, |
| 35 | fuchsia::accessibility::semantics::Action action, |
| 36 | OnAccessibilityActionRequestedCallback callback) final; |
| 37 | void HitTest(fuchsia::math::PointF local_point, |
| 38 | HitTestCallback callback) final; |
| 39 | void OnSemanticsModeChanged(bool updates_enabled, |
| 40 | OnSemanticsModeChangedCallback callback) final; |
| 41 | |
| 42 | fuchsia::accessibility::semantics::SemanticTreePtr tree_ptr_; |
| 43 | fidl::Binding<fuchsia::accessibility::semantics::SemanticListener> binding_; |
| 44 | |
| 45 | DISALLOW_COPY_AND_ASSIGN(AccessibilityBridge); |
| 46 | }; |
| 47 | |
| 48 | #endif // FUCHSIA_ENGINE_BROWSER_ACCESSIBILITY_BRIDGE_H_ |
