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 UI_VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_VIEWS_H_ 6 #define UI_VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_VIEWS_H_ 7 8 #include "base/time/time.h" 9 #include "ui/views/controls/combobox/native_combobox_wrapper.h" 10 #include "ui/views/controls/menu/menu_delegate.h" 11 #include "ui/views/view.h" 12 13 namespace gfx { 14 class Canvas; 15 class Font; 16 } 17 18 namespace views { 19 20 class FocusableBorder; 21 class MenuRunner; 22 23 // A views/skia only implementation of NativeComboboxWrapper. 24 // No platform specific code is used. 25 class NativeComboboxViews : public views::View, 26 public NativeComboboxWrapper, 27 public views::MenuDelegate { 28 public: 29 static const char kViewClassName[]; 30 31 explicit NativeComboboxViews(Combobox* combobox); 32 virtual ~NativeComboboxViews(); 33 34 // views::View overrides: 35 virtual bool OnMousePressed(const ui::MouseEvent& mouse_event) OVERRIDE; 36 virtual bool OnMouseDragged(const ui::MouseEvent& mouse_event) OVERRIDE; 37 virtual bool OnKeyPressed(const ui::KeyEvent& key_event) OVERRIDE; 38 virtual bool OnKeyReleased(const ui::KeyEvent& key_event) OVERRIDE; 39 virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE; 40 virtual void OnFocus() OVERRIDE; 41 virtual void OnBlur() OVERRIDE; 42 43 // ui::EventHandler overrides: 44 virtual void OnGestureEvent(ui::GestureEvent* gesture) OVERRIDE; 45 46 // NativeComboboxWrapper overrides: 47 virtual void UpdateFromModel() OVERRIDE; 48 virtual void UpdateSelectedIndex() OVERRIDE; 49 virtual void UpdateEnabled() OVERRIDE; 50 virtual int GetSelectedIndex() const OVERRIDE; 51 virtual bool IsDropdownOpen() const OVERRIDE; 52 virtual gfx::Size GetPreferredSize() OVERRIDE; 53 virtual View* GetView() OVERRIDE; 54 virtual void SetFocus() OVERRIDE; 55 virtual void ValidityStateChanged() OVERRIDE; 56 virtual bool HandleKeyPressed(const ui::KeyEvent& event) OVERRIDE; 57 virtual bool HandleKeyReleased(const ui::KeyEvent& event) OVERRIDE; 58 virtual void HandleFocus() OVERRIDE; 59 virtual void HandleBlur() OVERRIDE; 60 virtual gfx::NativeView GetTestingHandle() const OVERRIDE; 61 62 // MenuDelegate overrides: 63 virtual bool IsItemChecked(int id) const OVERRIDE; 64 virtual bool IsCommandEnabled(int id) const OVERRIDE; 65 virtual void ExecuteCommand(int id) OVERRIDE; 66 virtual bool GetAccelerator(int id, ui::Accelerator* accelerator) OVERRIDE; 67 68 private: 69 // Given bounds within our View, this helper routine mirrors the bounds if 70 // necessary. 71 void AdjustBoundsForRTLUI(gfx::Rect* rect) const; 72 73 // Draw the selected value of the drop down list 74 void PaintText(gfx::Canvas* canvas); 75 76 // Show the drop down list 77 void ShowDropDownMenu(ui::MenuSourceType source_type); 78 79 // The parent combobox, the owner of this object. 80 Combobox* combobox_; 81 82 // The reference to the border class. The object is owned by View::border_. 83 FocusableBorder* text_border_; 84 85 // The disclosure arrow next to the currently selected item from the list. 86 const gfx::ImageSkia* disclosure_arrow_; 87 88 // Responsible for showing the context menu. 89 scoped_ptr<MenuRunner> dropdown_list_menu_runner_; 90 91 // Is the drop down list showing 92 bool dropdown_open_; 93 94 // Like MenuButton, we use a time object in order to keep track of when the 95 // combobox was closed. The time is used for simulating menu behavior; that 96 // is, if the menu is shown and the button is pressed, we need to close the 97 // menu. There is no clean way to get the second click event because the 98 // menu is displayed using a modal loop and, unlike regular menus in Windows, 99 // the button is not part of the displayed menu. 100 base::Time closed_time_; 101 102 // The selected index in the model. The default value is -1, which means no 103 // selection. 104 int selected_index_; 105 106 // The maximum dimensions of the content in the dropdown 107 int content_width_; 108 int content_height_; 109 110 DISALLOW_COPY_AND_ASSIGN(NativeComboboxViews); 111 }; 112 113 } // namespace views 114 115 #endif // UI_VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_VIEWS_H_ 116
