unified_slider_view.h 2.1 KB

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  1. // Copyright 2018 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. #ifndef ASH_SYSTEM_UNIFIED_UNIFIED_SLIDER_VIEW_H_
  5. #define ASH_SYSTEM_UNIFIED_UNIFIED_SLIDER_VIEW_H_
  6. #include "ash/style/icon_button.h"
  7. #include "ui/views/controls/slider.h"
  8. #include "ui/views/view.h"
  9. namespace gfx {
  10. struct VectorIcon;
  11. } // namespace gfx
  12. namespace views {
  13. class Label;
  14. } // namespace views
  15. namespace ash {
  16. class UnifiedSliderListener : public views::SliderListener {
  17. public:
  18. // Instantiates UnifiedSliderView. The view will be onwed by views hierarchy.
  19. // The view should be always deleted after the controller is destructed.
  20. virtual views::View* CreateView() = 0;
  21. ~UnifiedSliderListener() override = default;
  22. };
  23. // Base view class of a slider row in UnifiedSystemTray. It has a button on the
  24. // left side and a slider on the right side.
  25. class UnifiedSliderView : public views::View {
  26. public:
  27. // If |readonly| is set, the slider will not accept any user events.
  28. UnifiedSliderView(views::Button::PressedCallback callback,
  29. UnifiedSliderListener* listener,
  30. const gfx::VectorIcon& icon,
  31. int accessible_name_id,
  32. bool readonly = false);
  33. UnifiedSliderView(const UnifiedSliderView&) = delete;
  34. UnifiedSliderView& operator=(const UnifiedSliderView&) = delete;
  35. ~UnifiedSliderView() override;
  36. IconButton* button() { return button_; }
  37. views::Slider* slider() { return slider_; }
  38. views::Label* toast_label() { return toast_label_; }
  39. // Sets a slider value. If |by_user| is false, accessibility events will not
  40. // be triggered.
  41. void SetSliderValue(float value, bool by_user);
  42. // views::View:
  43. const char* GetClassName() const override;
  44. void OnThemeChanged() override;
  45. protected:
  46. void CreateToastLabel();
  47. private:
  48. // Unowned. Owned by views hierarchy.
  49. IconButton* const button_;
  50. views::Slider* const slider_;
  51. views::Label* toast_label_ = nullptr;
  52. };
  53. } // namespace ash
  54. #endif // ASH_SYSTEM_UNIFIED_UNIFIED_SLIDER_VIEW_H_