| // Copyright 2018 The Chromium 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 ASH_SHORTCUT_VIEWER_VIEWS_KEYBOARD_SHORTCUT_ITEM_VIEW_H_ |
| #define ASH_SHORTCUT_VIEWER_VIEWS_KEYBOARD_SHORTCUT_ITEM_VIEW_H_ |
| |
| #include "ash/shortcut_viewer/keyboard_shortcut_item.h" |
| #include "ui/views/view.h" |
| |
| namespace views { |
| class StyledLabel; |
| } // namespace views |
| |
| namespace keyboard_shortcut_viewer { |
| |
| struct KeyboardShortcutItem; |
| enum class ShortcutCategory; |
| |
| // A view that displays a shortcut metadata. |
| class KeyboardShortcutItemView : public views::View { |
| public: |
| KeyboardShortcutItemView(const KeyboardShortcutItem& item, |
| ShortcutCategory category); |
| ~KeyboardShortcutItemView() override = default; |
| |
| // views::View: |
| void GetAccessibleNodeData(ui::AXNodeData* node_data) override; |
| int GetHeightForWidth(int w) const override; |
| void Layout() override; |
| |
| views::StyledLabel* description_label_view() { |
| return description_label_view_; |
| } |
| |
| views::StyledLabel* shortcut_label_view() { return shortcut_label_view_; } |
| |
| ShortcutCategory category() const { return category_; } |
| |
| const KeyboardShortcutItem* shortcut_item() const { return shortcut_item_; } |
| |
| // Clear the cache. |
| static void ClearKeycodeToString16Cache(); |
| |
| private: |
| // A cache to avoid repeatly looking up std::u16string from ui::KeyboardCode. |
| // Currently the Keyboard Shortcut Viewer (KSV) will not refresh its contents |
| // when keyboard layout changes. The users must restart KSV again to get new |
| // keys for the new layout. Also since GetStringForKeyboardCode is only called |
| // for KSV to create the strings in the initialization process, clearing the |
| // cache is not necessary when keyboard layout changes. |
| static std::map<ui::KeyboardCode, std::u16string>* |
| GetKeycodeToString16Cache(); |
| |
| // Calculates how to layout child views for the given |width|. |
| void CalculateLayout(int width) const; |
| |
| // Not owned. Pointer to the keyboard shortcut item. |
| const KeyboardShortcutItem* shortcut_item_; |
| |
| const ShortcutCategory category_; |
| |
| // View of the text describing what action the shortcut performs. |
| views::StyledLabel* description_label_view_; |
| |
| // View of the text listing the keys making up the shortcut. |
| views::StyledLabel* shortcut_label_view_; |
| |
| // Saves the results of the last CalculateLayout() call to avoid repeated |
| // calculation. |
| mutable gfx::Rect description_bounds_; |
| mutable gfx::Rect shortcut_bounds_; |
| mutable gfx::Size calculated_size_; |
| |
| // Accessibility data. |
| std::u16string accessible_name_; |
| |
| DISALLOW_COPY_AND_ASSIGN(KeyboardShortcutItemView); |
| }; |
| |
| } // namespace keyboard_shortcut_viewer |
| |
| #endif // ASH_SHORTCUT_VIEWER_VIEWS_KEYBOARD_SHORTCUT_ITEM_VIEW_H_ |