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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_EXCLUSIVE_ACCESS_PERMISSION_MANAGER_H_
#define CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_EXCLUSIVE_ACCESS_PERMISSION_MANAGER_H_
#include <vector>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "content/public/browser/global_routing_id.h"
#include "content/public/browser/web_contents_observer.h"
#include "third_party/blink/public/common/permissions/permission_utils.h"
#include "third_party/blink/public/mojom/permissions/permission_status.mojom.h"
namespace content {
class PermissionController;
} // namespace content
class ExclusiveAccessContext;
// Forwards permission requests for keyboard lock and pointer lock to
// PermissionController, and keeps track of outstanding permission requests.
class ExclusiveAccessPermissionManager : public content::WebContentsObserver {
public:
explicit ExclusiveAccessPermissionManager(
ExclusiveAccessContext* exclusive_access_context);
~ExclusiveAccessPermissionManager() override;
ExclusiveAccessPermissionManager(const ExclusiveAccessPermissionManager&) =
delete;
ExclusiveAccessPermissionManager& operator=(
const ExclusiveAccessPermissionManager&) = delete;
// If there are other requests from `web_contents` that have already been made
// and are waiting for a response from PermissionController, then the new
// request is made immediately. Otherwise we wait for a short moment so that
// multiple requests made in close succession can be grouped together, then
// make the request(s).
void QueuePermissionRequest(blink::PermissionType permission_type,
base::OnceClosure granted_callback,
base::OnceClosure denied_callback,
content::WebContents* web_contents);
void set_permission_controller_for_test(
raw_ptr<content::PermissionController> permission_controller) {
permission_controller_for_test_ = permission_controller;
}
private:
struct PermissionRequest {
public:
PermissionRequest(blink::PermissionType type,
base::OnceClosure granted_callback,
base::OnceClosure denied_callback);
PermissionRequest(PermissionRequest&& other);
~PermissionRequest();
blink::PermissionType type;
base::OnceClosure granted_callback;
base::OnceClosure denied_callback;
};
// Per-WebContents grouping of requests.
struct PendingRequests {
public:
PendingRequests();
~PendingRequests();
// Requests that we haven't submitted to PermissionController yet. We
// gather requests for a short period of time so that multiple requests made
// in close succession can be grouped together and be presented to the user
// in a single permission prompt.
std::vector<PermissionRequest> pending;
// The number of requests we've made and are waiting for a response from
// PermissionController. `pending.size() + waiting_responses`
// is the total number of outstanding requests.
size_t waiting_responses = 0;
// We enqueue callbacks here when PermissionController tells us the request
// results one by one. Once the size of this vector reaches
// `waiting_responses`, we call all the callbacks at once.
std::vector<base::OnceClosure> result_callbacks;
};
void RequestPermissions(content::GlobalRenderFrameHostId rfh_id,
base::WeakPtr<content::WebContents> web_contents);
void HandleRequestResult(
content::GlobalRenderFrameHostId rfh_id,
base::WeakPtr<content::WebContents> web_contents,
base::OnceClosure granted_callback,
base::OnceClosure denied_callback,
const std::vector<blink::mojom::PermissionStatus>& status);
content::PermissionController* GetPermissionController(
content::WebContents* web_contents);
raw_ptr<content::PermissionController> permission_controller_for_test_ =
nullptr;
std::map<content::GlobalRenderFrameHostId, PendingRequests> pending_requests_;
const raw_ptr<ExclusiveAccessContext> exclusive_access_context_;
base::WeakPtrFactory<ExclusiveAccessPermissionManager> weak_factory_{this};
};
#endif // CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_EXCLUSIVE_ACCESS_PERMISSION_MANAGER_H_
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