Handle media access permission request

android_webview/native/permission/permission_request_handler.h

+// Copyright 2014 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 ANDROID_WEBVIEW_NATIVE_PERMISSION_PERMISSION_REQUEST_HANDLER_H
+#define ANDROID_WEBVIEW_NATIVE_PERMISSION_PERMISSION_REQUEST_HANDLER_H
+
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "url/gurl.h"
+
+namespace android_webview {
+
+class AwPermissionRequest;
+class AwPermissionRequestDelegate;
+class PermissionRequestHandlerClient;
+
+// This class is used to send the permission requests, or cancel ongoing
+// requests.
+// It is owned by AwContents and has 1x1 mapping to AwContents. All methods
+// are running on UI thread.
+class PermissionRequestHandler {
+ public:
+  PermissionRequestHandler(PermissionRequestHandlerClient* aw_contents);
+  virtual ~PermissionRequestHandler();
+
+  // Send the given |request| to PermissionRequestHandlerClient.
+  void SendRequest(scoped_ptr<AwPermissionRequestDelegate> request);
+
+  // Cancel the ongoing request initiated by |origin| for accessing |resources|.
+  void CancelRequest(const GURL& origin, int64 resources);
+
+ private:
+  friend class TestPermissionRequestHandler;
+
+  typedef std::vector<base::WeakPtr<AwPermissionRequest> >::iterator
+      RequestIterator;
+
+  // Return the request initiated by |origin| for accessing |resources|.
+  RequestIterator FindRequest(const GURL& origin, int64 resources);
+
+  // Cancel the given request.
+  void CancelRequest(RequestIterator i);
+
+  // Remove the invalid requests from requests_.
+  void PruneRequests();
+
+  PermissionRequestHandlerClient* client_;
+
+  // A list of ongoing requests.
+  std::vector<base::WeakPtr<AwPermissionRequest> > requests_;
+
+  DISALLOW_COPY_AND_ASSIGN(PermissionRequestHandler);
+};
+
+}  // namespace android_webivew
+
+#endif  // ANDROID_WEBVIEW_NATIVE_PERMISSION_PERMISSION_REQUEST_HANDLER_H