| // 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 CONTENT_PUBLIC_BROWSER_MESSAGE_PORT_PROVIDER_H_ |
| #define CONTENT_PUBLIC_BROWSER_MESSAGE_PORT_PROVIDER_H_ |
| |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/macros.h" |
| #include "base/strings/string16.h" |
| #include "content/common/content_export.h" |
| |
| namespace content { |
| |
| class MessagePortDelegate; |
| class WebContents; |
| struct MessagePortMessage; |
| struct TransferredMessagePort; |
| |
| // An interface consisting of methods that can be called to use Message ports. |
| class CONTENT_EXPORT MessagePortProvider { |
| public: |
| // Posts a MessageEvent to the main frame using the given source and target |
| // origins and data. The caller may also provide any message port ids as |
| // part of the message. |
| // See https://html.spec.whatwg.org/multipage/comms.html#messageevent for |
| // further information on message events. |
| // Should be called on UI thread. |
| static void PostMessageToFrame( |
| WebContents* web_contents, |
| const base::string16& source_origin, |
| const base::string16& target_origin, |
| const base::string16& data, |
| const std::vector<TransferredMessagePort>& ports); |
| |
| // Creates a message channel and provide the ids of the message ports that are |
| // associated with this message channel. |
| // See https://html.spec.whatwg.org/multipage/comms.html#messagechannel |
| // Should be called on IO thread. |
| // The message ports that are created will have their routing id numbers equal |
| // to the message port numbers. |
| static void CreateMessageChannel(MessagePortDelegate* delegate, |
| int* port1, |
| int* port2); |
| |
| // Posts a MessageEvent to a message port associated with a message channel. |
| // Should be called on IO thread. |
| static void PostMessageToPort( |
| int sender_port_id, |
| const MessagePortMessage& message, |
| const std::vector<TransferredMessagePort>& sent_ports); |
| |
| // Close the message port. Should be called on IO thread. |
| static void ClosePort(int message_port_id); |
| |
| // Queue up all the messages for this message port until ReleaseMessages |
| // is called. Should be called on IO thread. |
| static void HoldMessages(int message_port_id); |
| |
| // Release any queued messages as a result of HoldMessages. Should be |
| // called on IO thread. |
| static void ReleaseMessages(int message_port_id); |
| |
| // Cleanup the message ports that belong to the closing delegate. |
| // Should be called on IO thread. |
| static void OnMessagePortDelegateClosing(MessagePortDelegate * delegate); |
| |
| // Update message port information when the message port is transferred |
| // from a different process. The updated message ports will have their |
| // routing numbers equal to the message port numbers. |
| // Should be called on IO thread. |
| static void UpdateMessagePort(int message_port_id, |
| MessagePortDelegate* delegate); |
| |
| private: |
| DISALLOW_IMPLICIT_CONSTRUCTORS(MessagePortProvider); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_PUBLIC_BROWSER_MESSAGE_PORT_PROVIDER_H_ |