blob: 7d1117d1dd0fc8759beb8d8e92a5404127f7b10e [file] [log] [blame]
// Copyright 2014 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.
#include <memory>
#include "ash/app_list/app_list_metrics.h"
#include "ash/ash_export.h"
#include "ash/shelf/home_button_controller.h"
#include "ash/shelf/shelf_button_delegate.h"
#include "ash/shelf/shelf_control_button.h"
#include "base/macros.h"
#include "ui/views/view_targeter_delegate.h"
namespace ash {
class ShelfButtonDelegate;
// Button used for the AppList icon on the shelf. It opens the app list (in
// clamshell mode) or home screen (in tablet mode). Because the clamshell-mode
// app list appears like a dismissable overlay, the button is highlighted while
// the app list is open in clamshell mode.
// If Assistant is enabled, the button is filled in; long-pressing it will
// launch Assistant.
class ASH_EXPORT HomeButton : public ShelfControlButton,
public ShelfButtonDelegate,
public views::ViewTargeterDelegate {
static const char kViewClassName[];
explicit HomeButton(Shelf* shelf);
~HomeButton() override;
// views::Button:
void OnGestureEvent(ui::GestureEvent* event) override;
const char* GetClassName() const override;
base::string16 GetTooltipText(const gfx::Point& p) const override;
// ShelfButtonDelegate:
void OnShelfButtonAboutToRequestFocusFromTabTraversal(ShelfButton* button,
bool reverse) override;
void ButtonPressed(views::Button* sender,
const ui::Event& event,
views::InkDrop* ink_drop) override;
// Called when the availability of a long-press gesture may have changed, e.g.
// when Assistant becomes enabled.
void OnAssistantAvailabilityChanged();
// True if the app list is shown for the display containing this button.
bool IsShowingAppList() const;
virtual void OnPressed(AppListShowSource show_source,
base::TimeTicks time_stamp);
// Returns the display which contains this view.
int64_t GetDisplayId() const;
// views::Button:
void PaintButtonContents(gfx::Canvas* canvas) override;
// views::ViewTargeterDelegate:
bool DoesIntersectRect(const views::View* target,
const gfx::Rect& rect) const override;
// The controller used to determine the button's behavior.
HomeButtonController controller_;
} // namespace ash