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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_STYLE_OPTION_BUTTON_BASE_H_
#define ASH_STYLE_OPTION_BUTTON_BASE_H_
#include "ash/ash_export.h"
#include "ash/style/typography.h"
#include "base/memory/raw_ptr.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/gfx/font_list.h"
#include "ui/views/controls/button/label_button.h"
namespace gfx {
struct VectorIcon;
} // namespace gfx
namespace ash {
class ASH_EXPORT OptionButtonBase : public views::LabelButton {
METADATA_HEADER(OptionButtonBase, views::LabelButton)
public:
// The default padding for the button if the client doesn't explicitly set
// one.
static constexpr auto kDefaultPadding = gfx::Insets::TLBR(8, 12, 8, 12);
static constexpr int kIconSize = 20;
static constexpr int kImageLabelSpacingDP = 12;
// Delegate performs further actions when the button selection states change.
class Delegate {
public:
// Called when the button is selected.
virtual void OnButtonSelected(OptionButtonBase* button) = 0;
// Called when the button is clicked.
virtual void OnButtonClicked(OptionButtonBase* button) = 0;
protected:
virtual ~Delegate() = default;
};
OptionButtonBase(int button_width,
PressedCallback callback,
const std::u16string& label = std::u16string(),
const gfx::Insets& insets = kDefaultPadding,
int image_label_spacing = kImageLabelSpacingDP);
OptionButtonBase(const OptionButtonBase&) = delete;
OptionButtonBase& operator=(const OptionButtonBase&) = delete;
~OptionButtonBase() override;
bool selected() const { return selected_; }
void set_delegate(Delegate* delegate) { delegate_ = delegate; }
// Updates the `select_` state.
void SetSelected(bool selected);
virtual void OnSelectedChanged() {}
// Sets a TypographyToken as the style of the label.
void SetLabelStyle(TypographyToken token);
// Sets a color_id as the color_id of the label.
void SetLabelColorId(ui::ColorId color_id);
void SetLabelFontList(const gfx::FontList& font_list);
// views::LabelButton:
gfx::Size CalculatePreferredSize(
const views::SizeBounds& available_size) const override;
gfx::Size GetMinimumSize() const override;
void Layout(PassKey) override;
void OnThemeChanged() override;
void NotifyClick(const ui::Event& event) override;
protected:
// `icon_state` is a bitmask using the IconState enum.
SkColor GetIconImageColor() const;
// Returns the vector icon according to the button's type and selected state.
virtual const gfx::VectorIcon& GetVectorIcon() const = 0;
// Returns true if the icon is on the button's left side.
virtual bool IsIconOnTheLeftSide() = 0;
private:
// Update the label's color based on the enable state.
void UpdateTextColor();
void SetAndUpdateAccessibleDefaultActionVerb();
const int min_width_;
const int image_label_spacing_;
// True if the button is currently selected.
bool selected_ = false;
raw_ptr<Delegate> delegate_ = nullptr;
};
} // namespace ash
#endif // ASH_STYLE_OPTION_BUTTON_BASE_H_
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