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// Copyright 2015 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 CHROME_BROWSER_UI_WEBUI_SETTINGS_CHROMEOS_CHANGE_PICTURE_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_SETTINGS_CHROMEOS_CHANGE_PICTURE_HANDLER_H_
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observer.h"
#include "chrome/browser/chromeos/camera_presence_notifier.h"
#include "chrome/browser/image_decoder.h"
#include "chrome/browser/ui/webui/settings/settings_page_ui_handler.h"
#include "components/user_manager/user_manager.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/shell_dialogs/select_file_dialog.h"
namespace base {
class ListValue;
}
namespace user_manager {
class User;
}
namespace chromeos {
namespace settings {
// ChromeOS user image settings page UI handler.
class ChangePictureHandler : public ::settings::SettingsPageUIHandler,
public ui::SelectFileDialog::Listener,
public user_manager::UserManager::Observer,
public ImageDecoder::ImageRequest,
public CameraPresenceNotifier::Observer {
public:
ChangePictureHandler();
~ChangePictureHandler() override;
// WebUIMessageHandler implementation.
void RegisterMessages() override;
void OnJavascriptAllowed() override;
void OnJavascriptDisallowed() override;
// CameraPresenceNotifier::Observer implementation:
void OnCameraPresenceCheckDone(bool is_camera_present) override;
private:
// Sends list of available default images to the page.
void SendDefaultImages();
// Sends current selection to the page.
void SendSelectedImage();
// Sends the profile image to the page. If |should_select| is true then
// the profile image element is selected.
void SendProfileImage(const gfx::ImageSkia& image, bool should_select);
// Starts profile image update and shows the last downloaded profile image,
// if any, on the page. Shouldn't be called before |SendProfileImage|.
void UpdateProfileImage();
// Sends the previous user image to the page.
void SendOldImage(std::string&& image_url);
// Sends the previous user image to the page. Also sends |image_index| which
// is either the index of the previous user image (if it was from an older
// default image set) or -1 otherwise. This allows the WebUI to show credits
// for older default images.
void SendOldImageWithIndex(std::string&& image_url, int image_index);
// Starts camera presence check.
void CheckCameraPresence();
// Updates UI with camera presence state.
void SetCameraPresent(bool present);
// Opens a file selection dialog to choose user image from file.
void HandleChooseFile(const base::ListValue* args);
// Handles photo taken with WebRTC UI.
void HandlePhotoTaken(const base::ListValue* args);
// Handles 'discard-photo' button click.
void HandleDiscardPhoto(const base::ListValue* args);
// Gets the list of available user images and sends it to the page.
void HandleGetAvailableImages(const base::ListValue* args);
// Handles page initialized event.
void HandlePageInitialized(const base::ListValue* args);
// Selects one of the available images as user's.
void HandleSelectImage(const base::ListValue* args);
// Requests the currently selected image.
void HandleRequestSelectedImage(const base::ListValue* args);
// SelectFileDialog::Delegate implementation.
void FileSelected(const base::FilePath& path,
int index,
void* params) override;
// user_manager::UserManager::Observer implementation.
void OnUserImageChanged(const user_manager::User& user) override;
void OnUserProfileImageUpdated(const user_manager::User& user,
const gfx::ImageSkia& profile_image) override;
// Sets user image to photo taken from camera.
void SetImageFromCamera(const gfx::ImageSkia& photo,
base::RefCountedBytes* image_bytes);
// Returns handle to browser window or NULL if it can't be found.
gfx::NativeWindow GetBrowserWindow() const;
// Overriden from ImageDecoder::ImageRequest:
void OnImageDecoded(const SkBitmap& decoded_image) override;
void OnDecodeImageFailed() override;
// Returns user related to current WebUI. If this user doesn't exist,
// returns active user.
const user_manager::User* GetUser() const;
scoped_refptr<ui::SelectFileDialog> select_file_dialog_;
// Previous user image from camera/file and its data URL.
gfx::ImageSkia previous_image_;
scoped_refptr<base::RefCountedBytes> previous_image_bytes_;
user_manager::UserImage::ImageFormat previous_image_format_ =
user_manager::UserImage::FORMAT_UNKNOWN;
// Index of the previous user image.
int previous_image_index_;
// Last user photo, if taken.
gfx::ImageSkia user_photo_;
// Data for |user_photo_|.
scoped_refptr<base::RefCountedBytes> user_photo_data_;
ScopedObserver<user_manager::UserManager, user_manager::UserManager::Observer>
user_manager_observer_{this};
ScopedObserver<CameraPresenceNotifier, CameraPresenceNotifier::Observer>
camera_observer_{this};
base::WeakPtrFactory<ChangePictureHandler> weak_ptr_factory_{this};
DISALLOW_COPY_AND_ASSIGN(ChangePictureHandler);
};
} // namespace settings
} // namespace chromeos
#endif // CHROME_BROWSER_UI_WEBUI_SETTINGS_CHROMEOS_CHANGE_PICTURE_HANDLER_H_
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