1 // Copyright (c) 2012 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 ASH_SYSTEM_STATUS_AREA_WIDGET_DELEGATE_H_ 6 #define ASH_SYSTEM_STATUS_AREA_WIDGET_DELEGATE_H_ 7 8 #include "ash/ash_export.h" 9 #include "ash/public/cpp/shelf_config.h" 10 #include "ash/public/cpp/shelf_types.h" 11 #include "ash/system/status_area_widget.h" 12 #include "base/macros.h" 13 #include "ui/gfx/image/image_skia.h" 14 #include "ui/views/accessible_pane_view.h" 15 #include "ui/views/widget/widget_delegate.h" 16 17 namespace ash { 18 class FocusCycler; 19 class Shelf; 20 21 // The View for the status area widget. 22 class ASH_EXPORT StatusAreaWidgetDelegate : public views::AccessiblePaneView, 23 public views::WidgetDelegate { 24 public: 25 explicit StatusAreaWidgetDelegate(Shelf* shelf); 26 ~StatusAreaWidgetDelegate() override; 27 28 // Calculates the bounds that this view should have given its constraints, 29 // but does not actually update bounds yet. 30 void CalculateTargetBounds(); 31 32 // Returns the bounds that this view should have given its constraints. 33 gfx::Rect GetTargetBounds() const; 34 35 // Performs the actual changes in bounds for this view to match its target 36 // bounds. 37 void UpdateLayout(bool animate); 38 39 // Sets the focus cycler. 40 void SetFocusCyclerForTesting(const FocusCycler* focus_cycler); 41 42 // If |reverse|, indicates backward focusing, otherwise forward focusing. 43 // Returns true if status area widget delegate should focus out on the 44 // designated focusing direction, otherwise false. 45 bool ShouldFocusOut(bool reverse); 46 47 // Called by StatusAreaWidget when its collapse state changes. 48 void OnStatusAreaCollapseStateChanged( 49 StatusAreaWidget::CollapseState new_collapse_state); 50 51 // views::AccessiblePaneView: 52 View* GetDefaultFocusableChild() override; 53 const char* GetClassName() const override; 54 views::Widget* GetWidget() override; 55 const views::Widget* GetWidget() const override; 56 57 // ui::EventHandler: 58 void OnGestureEvent(ui::GestureEvent* event) override; 59 60 // views::WidgetDelegate: 61 bool CanActivate() const override; 62 set_default_last_focusable_child(bool default_last_focusable_child)63 void set_default_last_focusable_child(bool default_last_focusable_child) { 64 default_last_focusable_child_ = default_last_focusable_child; 65 } 66 67 protected: 68 // views::View: 69 void ChildPreferredSizeChanged(views::View* child) override; 70 void ChildVisibilityChanged(views::View* child) override; 71 72 private: 73 // Sets a border on |child|. If |extend_border_to_edge| is true, then an extra 74 // wide border is added to extend the view's hit region to the edge of the 75 // screen. 76 void SetBorderOnChild(views::View* child, bool extend_border_to_edge); 77 78 Shelf* const shelf_; 79 const FocusCycler* focus_cycler_for_testing_; 80 gfx::Rect target_bounds_; 81 82 // When true, the default focus of the status area widget is the last 83 // focusable child. 84 bool default_last_focusable_child_ = false; 85 86 DISALLOW_COPY_AND_ASSIGN(StatusAreaWidgetDelegate); 87 }; 88 89 } // namespace ash 90 91 #endif // ASH_SYSTEM_STATUS_AREA_WIDGET_DELEGATE_H_ 92