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// Copyright (c) 2012 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 UI_VIEWS_WINDOW_DIALOG_CLIENT_VIEW_H_
#define UI_VIEWS_WINDOW_DIALOG_CLIENT_VIEW_H_
#include "ui/base/ui_base_types.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/focus/focus_manager.h"
#include "ui/views/window/client_view.h"
namespace views {
class DialogDelegate;
class LabelButton;
class Widget;
// DialogClientView provides adornments for a dialog's content view, including
// custom-labeled [OK] and [Cancel] buttons with [Enter] and [Esc] accelerators.
// The view also displays the delegate's extra view alongside the buttons and
// the delegate's footnote view below the buttons. The view appears like below.
// NOTE: The contents view is not inset on the top or side client view edges.
// +------------------------------+
// | Contents View |
// +------------------------------+
// | [Extra View] [OK] [Cancel] |
// | [ Footnote View ] |
// +------------------------------+
class VIEWS_EXPORT DialogClientView : public ClientView,
public ButtonListener,
public FocusChangeListener {
public:
DialogClientView(Widget* widget, View* contents_view);
virtual ~DialogClientView();
// Accept or Cancel the dialog.
void AcceptWindow();
void CancelWindow();
// Accessors in case the user wishes to adjust these buttons.
LabelButton* ok_button() const { return ok_button_; }
LabelButton* cancel_button() const { return cancel_button_; }
// Update the dialog buttons to match the dialog's delegate.
void UpdateDialogButtons();
// ClientView implementation:
virtual bool CanClose() override;
virtual DialogClientView* AsDialogClientView() override;
virtual const DialogClientView* AsDialogClientView() const override;
// FocusChangeListener implementation:
virtual void OnWillChangeFocus(View* focused_before,
View* focused_now) override;
virtual void OnDidChangeFocus(View* focused_before,
View* focused_now) override;
// View implementation:
virtual gfx::Size GetPreferredSize() const override;
virtual void Layout() override;
virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
virtual void ViewHierarchyChanged(
const ViewHierarchyChangedDetails& details) override;
virtual void NativeViewHierarchyChanged() override;
virtual void OnNativeThemeChanged(const ui::NativeTheme* theme) override;
// ButtonListener implementation:
virtual void ButtonPressed(Button* sender, const ui::Event& event) override;
protected:
// For testing.
DialogClientView(View* contents_view);
// Returns the DialogDelegate for the window. Virtual for testing.
virtual DialogDelegate* GetDialogDelegate() const;
// Create and add the extra view, if supplied by the delegate.
void CreateExtraView();
// Creates and adds the footnote view, if supplied by the delegate.
void CreateFootnoteView();
// View implementation.
virtual void ChildPreferredSizeChanged(View* child) override;
virtual void ChildVisibilityChanged(View* child) override;
private:
FRIEND_TEST_ALL_PREFIXES(DialogClientViewTest, FocusManager);
bool has_dialog_buttons() const { return ok_button_ || cancel_button_; }
// Create a dialog button of the appropriate type.
LabelButton* CreateDialogButton(ui::DialogButton type);
// Update |button|'s text and enabled state according to the delegate's state.
void UpdateButton(LabelButton* button, ui::DialogButton type);
// Returns the height of the row containing the buttons and the extra view.
int GetButtonsAndExtraViewRowHeight() const;
// Returns the insets for the buttons and extra view.
gfx::Insets GetButtonRowInsets() const;
// Closes the widget.
void Close();
// The dialog buttons.
LabelButton* ok_button_;
LabelButton* cancel_button_;
// The button that is currently default; may be NULL.
LabelButton* default_button_;
// Observe |focus_manager_| to update the default button with focus changes.
FocusManager* focus_manager_;
// The extra view shown in the row of buttons; may be NULL.
View* extra_view_;
// The footnote view shown below the buttons; may be NULL.
View* footnote_view_;
// True if we've notified the delegate the window is closing and the delegate
// allosed the close. In some situations it's possible to get two closes (see
// http://crbug.com/71940). This is used to avoid notifying the delegate
// twice, which can have bad consequences.
bool notified_delegate_;
DISALLOW_COPY_AND_ASSIGN(DialogClientView);
};
} // namespace views
#endif // UI_VIEWS_WINDOW_DIALOG_CLIENT_VIEW_H_
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