// Copyright 2013 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_MEDIA_WEBRTC_DESKTOP_MEDIA_PICKER_H_
#define CHROME_BROWSER_MEDIA_WEBRTC_DESKTOP_MEDIA_PICKER_H_

#include <memory>

#include "base/callback_forward.h"
#include "base/macros.h"
#include "base/strings/string16.h"
#include "content/public/browser/desktop_media_id.h"
#include "ui/base/ui_base_types.h"
#include "ui/gfx/native_widget_types.h"

class DesktopMediaList;

namespace content {
class WebContents;
}

// Abstract interface for desktop media picker UI. It's used by Desktop Media
// API and by ARC to let user choose a desktop media source.
class DesktopMediaPicker {
 public:
  typedef base::Callback<void(content::DesktopMediaID)> DoneCallback;
  struct Params {
    Params();
    ~Params();

    // WebContents this picker is relative to, can be null.
    content::WebContents* web_contents = nullptr;
    // The context whose root window is used for dialog placement, cannot be
    // null for Aura.
    gfx::NativeWindow context = nullptr;
    // Parent window the dialog is relative to, only used on Mac.
    gfx::NativeWindow parent = nullptr;
    // The modality used for showing the dialog.
    ui::ModalType modality = ui::ModalType::MODAL_TYPE_CHILD;
    // The name used in the dialog for what is requesting the picker to be
    // shown.
    base::string16 app_name;
    // Can be the same as target_name. If it is not then this is used in the
    // dialog for what is specific target within the app_name is requesting the
    // picker.
    base::string16 target_name;
    // Whether audio capture should be shown as an option in the picker.
    bool request_audio = false;
    // Whether audio capture option should be approved by default if shown.
    bool approve_audio_by_default = true;
  };

  // Creates default implementation of DesktopMediaPicker for the current
  // platform.
  static std::unique_ptr<DesktopMediaPicker> Create();

  DesktopMediaPicker() {}
  virtual ~DesktopMediaPicker() {}

  // Shows dialog with list of desktop media sources (screens, windows, tabs)
  // provided by |sources_lists|.
  // Dialog window will call |done_callback| when user chooses one of the
  // sources or closes the dialog.
  virtual void Show(const Params& params,
                    std::vector<std::unique_ptr<DesktopMediaList>> source_lists,
                    const DoneCallback& done_callback) = 0;

 private:
  DISALLOW_COPY_AND_ASSIGN(DesktopMediaPicker);
};

#endif  // CHROME_BROWSER_MEDIA_WEBRTC_DESKTOP_MEDIA_PICKER_H_