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| 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_WINDOW_DIALOG_CLIENT_VIEW_H_ | |
| 6 #define UI_VIEWS_WINDOW_DIALOG_CLIENT_VIEW_H_ | |
| 7 | |
| 8 #include "ui/base/ui_base_types.h" | |
| 9 #include "ui/views/controls/button/button.h" | |
| 10 #include "ui/views/focus/focus_manager.h" | |
| 11 #include "ui/views/window/client_view.h" | |
| 12 | |
| 13 namespace views { | |
| 14 | |
| 15 class DialogDelegate; | |
| 16 class LabelButton; | |
| 17 class Widget; | |
| 18 | |
| 19 // DialogClientView provides adornments for a dialog's content view, including | |
| 20 // custom-labeled [OK] and [Cancel] buttons with [Enter] and [Esc] accelerators. | |
| 21 // The view also displays the delegate's extra view alongside the buttons and | |
| 22 // the delegate's footnote view below the buttons. The view appears like below. | |
| 23 // NOTE: The contents view is not inset on the top or side client view edges. | |
| 24 // +------------------------------+ | |
| 25 // | Contents View | | |
| 26 // +------------------------------+ | |
| 27 // | [Extra View] [OK] [Cancel] | | |
| 28 // | [ Footnote View ] | | |
| 29 // +------------------------------+ | |
| 30 class VIEWS_EXPORT DialogClientView : public ClientView, | |
| 31 public ButtonListener, | |
| 32 public FocusChangeListener { | |
| 33 public: | |
| 34 DialogClientView(Widget* widget, View* contents_view); | |
| 35 virtual ~DialogClientView(); | |
| 36 | |
| 37 // Accept or Cancel the dialog. | |
| 38 void AcceptWindow(); | |
| 39 void CancelWindow(); | |
| 40 | |
| 41 // Accessors in case the user wishes to adjust these buttons. | |
| 42 LabelButton* ok_button() const { return ok_button_; } | |
| 43 LabelButton* cancel_button() const { return cancel_button_; } | |
| 44 | |
| 45 // Update the dialog buttons to match the dialog's delegate. | |
| 46 void UpdateDialogButtons(); | |
| 47 | |
| 48 // ClientView implementation: | |
| 49 virtual bool CanClose() override; | |
| 50 virtual DialogClientView* AsDialogClientView() override; | |
| 51 virtual const DialogClientView* AsDialogClientView() const override; | |
| 52 | |
| 53 // FocusChangeListener implementation: | |
| 54 virtual void OnWillChangeFocus(View* focused_before, | |
| 55 View* focused_now) override; | |
| 56 virtual void OnDidChangeFocus(View* focused_before, | |
| 57 View* focused_now) override; | |
| 58 | |
| 59 // View implementation: | |
| 60 virtual gfx::Size GetPreferredSize() const override; | |
| 61 virtual void Layout() override; | |
| 62 virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) override; | |
| 63 virtual void ViewHierarchyChanged( | |
| 64 const ViewHierarchyChangedDetails& details) override; | |
| 65 virtual void NativeViewHierarchyChanged() override; | |
| 66 virtual void OnNativeThemeChanged(const ui::NativeTheme* theme) override; | |
| 67 | |
| 68 // ButtonListener implementation: | |
| 69 virtual void ButtonPressed(Button* sender, const ui::Event& event) override; | |
| 70 | |
| 71 protected: | |
| 72 // For testing. | |
| 73 DialogClientView(View* contents_view); | |
| 74 | |
| 75 // Returns the DialogDelegate for the window. Virtual for testing. | |
| 76 virtual DialogDelegate* GetDialogDelegate() const; | |
| 77 | |
| 78 // Create and add the extra view, if supplied by the delegate. | |
| 79 void CreateExtraView(); | |
| 80 | |
| 81 // Creates and adds the footnote view, if supplied by the delegate. | |
| 82 void CreateFootnoteView(); | |
| 83 | |
| 84 // View implementation. | |
| 85 virtual void ChildPreferredSizeChanged(View* child) override; | |
| 86 virtual void ChildVisibilityChanged(View* child) override; | |
| 87 | |
| 88 private: | |
| 89 FRIEND_TEST_ALL_PREFIXES(DialogClientViewTest, FocusManager); | |
| 90 | |
| 91 bool has_dialog_buttons() const { return ok_button_ || cancel_button_; } | |
| 92 | |
| 93 // Create a dialog button of the appropriate type. | |
| 94 LabelButton* CreateDialogButton(ui::DialogButton type); | |
| 95 | |
| 96 // Update |button|'s text and enabled state according to the delegate's state. | |
| 97 void UpdateButton(LabelButton* button, ui::DialogButton type); | |
| 98 | |
| 99 // Returns the height of the row containing the buttons and the extra view. | |
| 100 int GetButtonsAndExtraViewRowHeight() const; | |
| 101 | |
| 102 // Returns the insets for the buttons and extra view. | |
| 103 gfx::Insets GetButtonRowInsets() const; | |
| 104 | |
| 105 // Closes the widget. | |
| 106 void Close(); | |
| 107 | |
| 108 // The dialog buttons. | |
| 109 LabelButton* ok_button_; | |
| 110 LabelButton* cancel_button_; | |
| 111 | |
| 112 // The button that is currently default; may be NULL. | |
| 113 LabelButton* default_button_; | |
| 114 | |
| 115 // Observe |focus_manager_| to update the default button with focus changes. | |
| 116 FocusManager* focus_manager_; | |
| 117 | |
| 118 // The extra view shown in the row of buttons; may be NULL. | |
| 119 View* extra_view_; | |
| 120 | |
| 121 // The footnote view shown below the buttons; may be NULL. | |
| 122 View* footnote_view_; | |
| 123 | |
| 124 // True if we've notified the delegate the window is closing and the delegate | |
| 125 // allosed the close. In some situations it's possible to get two closes (see | |
| 126 // http://crbug.com/71940). This is used to avoid notifying the delegate | |
| 127 // twice, which can have bad consequences. | |
| 128 bool notified_delegate_; | |
| 129 | |
| 130 DISALLOW_COPY_AND_ASSIGN(DialogClientView); | |
| 131 }; | |
| 132 | |
| 133 } // namespace views | |
| 134 | |
| 135 #endif // UI_VIEWS_WINDOW_DIALOG_CLIENT_VIEW_H_ | |
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