blob: 3d6ad62339313af9e509c6de074626b989799e53 [file] [log] [blame]
// Copyright 2016 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 "ash/ash_export.h"
#include "base/callback.h"
#include "base/callback_list.h"
#include "base/macros.h"
#include "ui/events/devices/stylus_state.h"
namespace ash {
// This delegate allows the UI code in ash, e.g. |PaletteTray|, to perform
// Chrome-specific actions.
class PaletteDelegate {
using EnableListener = base::Callback<void(bool)>;
using EnableListenerSubscription =
using OnStylusStateChangedCallback = base::Callback<void(ui::StylusState)>;
virtual ~PaletteDelegate() {}
// Sets callback function that will receive the current state of the palette
// enabled pref. The callback will be invoked once the initial pref value is
// available.
virtual std::unique_ptr<EnableListenerSubscription> AddPaletteEnableListener(
const EnableListener& on_state_changed) = 0;
// Create a new note.
virtual void CreateNote() = 0;
// Returns true if there is a note-taking application available.
virtual bool HasNoteApp() = 0;
// Enables or disables the partial magnifier.
// TODO(sammiequon): This can be removed from the delegate and put in wmshell.
// See
virtual void SetPartialMagnifierState(bool enabled) = 0;
// Set callback that is run when a stylus is inserted or removed.
virtual void SetStylusStateChangedCallback(
const OnStylusStateChangedCallback& on_stylus_state_changed) = 0;
// Returns true if the palette should be automatically opened on an eject
// event.
virtual bool ShouldAutoOpenPalette() = 0;
// Returns true if the palette should be displayed. This is the one-shot
// equivalent to AddPaletteEnableListener.
virtual bool ShouldShowPalette() = 0;
// Take a screenshot of the entire window.
virtual void TakeScreenshot() = 0;
// Take a screenshot of a user-selected region. |done| is called when the
// partial screenshot session has finished; a screenshot may or may not have
// been taken.
virtual void TakePartialScreenshot(const base::Closure& done) = 0;
// Cancels any active partial screenshot session.
virtual void CancelPartialScreenshot() = 0;
} // namespace ash