// 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 CONTENT_PUBLIC_BROWSER_PERMISSION_CONTROLLER_DELEGATE_H_
#define CONTENT_PUBLIC_BROWSER_PERMISSION_CONTROLLER_DELEGATE_H_

#include "content/common/content_export.h"
#include "third_party/blink/public/platform/modules/permissions/permission_status.mojom.h"

class GURL;

namespace content {
enum class PermissionType;
class RenderFrameHost;

class CONTENT_EXPORT PermissionControllerDelegate {
 public:
  virtual ~PermissionControllerDelegate() = default;

  // Requests a permission on behalf of a frame identified by
  // render_frame_host.
  // When the permission request is handled, whether it failed, timed out or
  // succeeded, the |callback| will be run.
  // Returns a request id which can be used to cancel the permission (see
  // CancelPermissionRequest). This can be kNoPendingOperation if
  // there is no further need to cancel the permission in which case |callback|
  // was invoked.
  virtual int RequestPermission(
      PermissionType permission,
      RenderFrameHost* render_frame_host,
      const GURL& requesting_origin,
      bool user_gesture,
      const base::Callback<void(blink::mojom::PermissionStatus)>& callback) = 0;

  // Requests multiple permissions on behalf of a frame identified by
  // render_frame_host.
  // When the permission request is handled, whether it failed, timed out or
  // succeeded, the |callback| will be run. The order of statuses in the
  // returned vector will correspond to the order of requested permission
  // types.
  // Returns a request id which can be used to cancel the request (see
  // CancelPermissionRequest). This can be kNoPendingOperation if
  // there is no further need to cancel the permission in which case |callback|
  // was invoked.
  virtual int RequestPermissions(
      const std::vector<PermissionType>& permission,
      RenderFrameHost* render_frame_host,
      const GURL& requesting_origin,
      bool user_gesture,
      const base::Callback<void(
          const std::vector<blink::mojom::PermissionStatus>&)>& callback) = 0;

  // Returns the permission status of a given requesting_origin/embedding_origin
  // tuple. This is not taking a RenderFrameHost because the call might happen
  // outside of a frame context. Prefer GetPermissionStatusForFrame (below)
  // whenever possible.
  virtual blink::mojom::PermissionStatus GetPermissionStatus(
      PermissionType permission,
      const GURL& requesting_origin,
      const GURL& embedding_origin) = 0;

  // Returns the permission status for a given frame. Use this over
  // GetPermissionStatus whenever possible.
  // TODO(raymes): Currently we still pass the |requesting_origin| as a separate
  // parameter because we can't yet guarantee that it matches the last committed
  // origin of the RenderFrameHost. See https://crbug.com/698985.
  virtual blink::mojom::PermissionStatus GetPermissionStatusForFrame(
      PermissionType permission,
      RenderFrameHost* render_frame_host,
      const GURL& requesting_origin) = 0;

  // Sets the permission back to its default for the requesting_origin/
  // embedding_origin tuple.
  virtual void ResetPermission(PermissionType permission,
                               const GURL& requesting_origin,
                               const GURL& embedding_origin) = 0;

  // Runs the given |callback| whenever the |permission| associated with the
  // given RenderFrameHost changes. A nullptr should be passed if the request
  // is from a worker. Returns the subscription_id to be used to unsubscribe.
  // Can be kNoPendingOperation if the subscribe was not successful.
  virtual int SubscribePermissionStatusChange(
      content::PermissionType permission,
      content::RenderFrameHost* render_frame_host,
      const GURL& requesting_origin,
      const base::Callback<void(blink::mojom::PermissionStatus)>& callback) = 0;

  // Unregisters from permission status change notifications.
  // The |subscription_id| must match the value returned by the
  // SubscribePermissionStatusChange call. Unsubscribing
  // an already unsubscribed |subscription_id| or providing the
  // |subscription_id| kNoPendingOperation is a no-op.
  virtual void UnsubscribePermissionStatusChange(int subscription_id) = 0;
};

}  // namespace content

#endif  // CONTENT_PUBLIC_BROWSER_PERMISSION_CONTROLLER_DELEGATE_H_