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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 "base/gtest_prod_util.h"
#include "base/macros.h"
#include "base/time/time.h"
#include "ui/base/ui_base_types.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/window/client_view.h"
#include "ui/views/window/dialog_observer.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. 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] |
// +------------------------------+
class VIEWS_EXPORT DialogClientView : public ClientView,
public ButtonListener,
public DialogObserver {
public:
DialogClientView(Widget* widget, View* contents_view);
~DialogClientView() override;
// 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_; }
void SetButtonRowInsets(const gfx::Insets& insets);
// ClientView implementation:
bool CanClose() override;
DialogClientView* AsDialogClientView() override;
const DialogClientView* AsDialogClientView() const override;
// View implementation:
gfx::Size CalculatePreferredSize() const override;
gfx::Size GetMinimumSize() const override;
gfx::Size GetMaximumSize() const override;
void VisibilityChanged(View* starting_from, bool is_visible) override;
void Layout() override;
bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
void ViewHierarchyChanged(
const ViewHierarchyChangedDetails& details) override;
void OnNativeThemeChanged(const ui::NativeTheme* theme) override;
// ButtonListener implementation:
void ButtonPressed(Button* sender, const ui::Event& event) override;
void set_minimum_size(const gfx::Size& size) { minimum_size_ = size; }
// Resets the time when view has been shown. Tests may need to call this
// method if they use events that could be otherwise treated as unintended.
// See IsPossiblyUnintendedInteraction().
void ResetViewShownTimeStampForTesting();
private:
enum {
// The number of buttons that DialogClientView can support.
kNumButtons = 3
};
class ButtonRowContainer;
// Returns the DialogDelegate for the window.
DialogDelegate* GetDialogDelegate() const;
// View implementation.
void ChildPreferredSizeChanged(View* child) override;
void ChildVisibilityChanged(View* child) override;
// DialogObserver:
void OnDialogModelChanged() override;
// Update the dialog buttons to match the dialog's delegate.
void UpdateDialogButtons();
// Creates, deletes, or updates the appearance of the button of type |type|
// (which must be pointed to by |member|). Which action is chosen is based on
// whether DialogDelegate::GetDialogButtons() includes |type|, and whether
// |member| points to a button that already exists.
void UpdateDialogButton(LabelButton** member, ui::DialogButton type);
// Returns the spacing between the extra view and the ok/cancel buttons. 0 if
// no extra view. Otherwise uses GetExtraViewPadding() or the default padding.
int GetExtraViewSpacing() const;
// Returns Views in the button row, as they should appear in the layout. If
// a View should not appear, it will be null.
std::array<View*, kNumButtons> GetButtonRowViews();
// Installs and configures the LayoutManager for |button_row_container_|.
void SetupLayout();
// Creates or deletes any buttons that are required. Updates data members.
// After calling this, no button row Views will be in the view hierarchy.
void SetupViews();
// How much to inset the button row.
gfx::Insets button_row_insets_;
// The minimum size of this dialog, regardless of the size of its content
// view.
gfx::Size minimum_size_;
// The dialog buttons.
LabelButton* ok_button_ = nullptr;
LabelButton* cancel_button_ = nullptr;
// The extra view shown in the row of buttons; may be NULL.
View* extra_view_ = nullptr;
// Container view for the button row.
ButtonRowContainer* button_row_container_ = nullptr;
// True if we've notified the delegate the window is closing and the delegate
// allowed 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 delegate_allowed_close_ = false;
// Used to prevent unnecessary or potentially harmful changes during
// SetupLayout(). Everything will be manually updated afterwards.
bool adding_or_removing_views_ = false;
// Time when view has been shown.
base::TimeTicks view_shown_time_stamp_;
DISALLOW_COPY_AND_ASSIGN(DialogClientView);
};
} // namespace views
#endif // UI_VIEWS_WINDOW_DIALOG_CLIENT_VIEW_H_