| // Copyright 2020 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_UI_A11Y_LIB_ANNOTATION_FOCUS_HIGHLIGHT_MANAGER_H_ |
| #define SRC_UI_A11Y_LIB_ANNOTATION_FOCUS_HIGHLIGHT_MANAGER_H_ |
| |
| #include <zircon/types.h> |
| |
| namespace a11y { |
| |
| // An interface for manipulating a11y focus highlights. |
| class FocusHighlightManager { |
| public: |
| struct SemanticNodeIdentifier { |
| zx_koid_t koid; |
| uint32_t node_id; |
| }; |
| |
| FocusHighlightManager() = default; |
| virtual ~FocusHighlightManager() = default; |
| |
| // Clears existing highlight. |
| virtual void ClearHighlight() = 0; |
| |
| // Clears existing highlight (if any) and draws a highlight around |newly_highlighted_node.| |
| virtual void UpdateHighlight(SemanticNodeIdentifier newly_highlighted_node) = 0; |
| }; |
| |
| } // namespace a11y |
| |
| #endif // SRC_UI_A11Y_LIB_ANNOTATION_FOCUS_HIGHLIGHT_MANAGER_H_ |