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// Copyright (c) 2011 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_CONTROLS_BUTTON_BUTTON_H_
#define UI_VIEWS_CONTROLS_BUTTON_BUTTON_H_
#include "base/macros.h"
#include "ui/native_theme/native_theme.h"
#include "ui/views/animation/ink_drop_host_view.h"
namespace views {
class Button;
class Event;
// An interface implemented by an object to let it know that a button was
// pressed.
class VIEWS_EXPORT ButtonListener {
public:
virtual void ButtonPressed(Button* sender, const ui::Event& event) = 0;
protected:
virtual ~ButtonListener() {}
};
// A View representing a button. Depending on the specific type, the button
// could be implemented by a native control or custom rendered.
class VIEWS_EXPORT Button : public InkDropHostView {
public:
~Button() override;
// Button states for various button sub-types.
enum ButtonState {
STATE_NORMAL = 0,
STATE_HOVERED,
STATE_PRESSED,
STATE_DISABLED,
STATE_COUNT,
};
// Button styles with associated images and border painters.
// TODO(msw): Add Menu, ComboBox, etc.
enum ButtonStyle {
STYLE_BUTTON = 0,
STYLE_TEXTBUTTON,
STYLE_COUNT,
};
static ButtonState GetButtonStateFrom(ui::NativeTheme::State state);
void SetTooltipText(const base::string16& tooltip_text);
int tag() const { return tag_; }
void set_tag(int tag) { tag_ = tag; }
void SetAccessibleName(const base::string16& name);
// Overridden from View:
bool GetTooltipText(const gfx::Point& p,
base::string16* tooltip) const override;
void GetAccessibleState(ui::AXViewState* state) override;
protected:
// Construct the Button with a Listener. The listener can be NULL. This can be
// true of buttons that don't have a listener - e.g. menubuttons where there's
// no default action and checkboxes.
explicit Button(ButtonListener* listener);
// Cause the button to notify the listener that a click occurred.
virtual void NotifyClick(const ui::Event& event);
// Called when a button gets released without triggering an action.
// Note: This is only wired up for mouse button events and not gesture
// events.
virtual void OnClickCanceled(const ui::Event& event);
// The button's listener. Notified when clicked.
ButtonListener* listener_;
private:
// The text shown in a tooltip.
base::string16 tooltip_text_;
// Accessibility data.
base::string16 accessible_name_;
// The id tag associated with this button. Used to disambiguate buttons in
// the ButtonListener implementation.
int tag_;
DISALLOW_COPY_AND_ASSIGN(Button);
};
} // namespace views
#endif // UI_VIEWS_CONTROLS_BUTTON_BUTTON_H_
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