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Side by Side Diff: ppapi/c/ppb_messaging.h

Issue 7282015: Misc. changes. Mostly formatting. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 5 months ago
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1 /* Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 /* Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 * Use of this source code is governed by a BSD-style license that can be 2 * Use of this source code is governed by a BSD-style license that can be
3 * found in the LICENSE file. 3 * found in the LICENSE file.
4 */ 4 */
5 #ifndef PPAPI_C_PPB_MESSAGING_H_ 5 #ifndef PPAPI_C_PPB_MESSAGING_H_
6 #define PPAPI_C_PPB_MESSAGING_H_ 6 #define PPAPI_C_PPB_MESSAGING_H_
7 7
8 #include "ppapi/c/pp_instance.h" 8 #include "ppapi/c/pp_instance.h"
9 #include "ppapi/c/pp_var.h" 9 #include "ppapi/c/pp_var.h"
10 10
11 #define PPB_MESSAGING_INTERFACE_0_1 "PPB_Messaging;0.1" 11 #define PPB_MESSAGING_INTERFACE_0_1 "PPB_Messaging;0.1"
12 #define PPB_MESSAGING_INTERFACE PPB_MESSAGING_INTERFACE_0_1 12 #define PPB_MESSAGING_INTERFACE PPB_MESSAGING_INTERFACE_0_1
13 13
14 /** 14 /**
15 * @file 15 * @file
16 * This file defines the PPB_Messaging interface implemented by the browser 16 * This file defines the <code>PPB_Messaging</code> interface implemented
17 * related to sending messages to DOM elements associated with a specific 17 * by the browser for sending messages to DOM elements associated with a
18 * module instance. 18 * specific module instance.
19 * 19 *
20 * @addtogroup Interfaces 20 * @addtogroup Interfaces
21 * @{ 21 * @{
22 */ 22 */
23 23
24 /** 24 /**
25 * The PPB_Messaging interface contains a pointer to a function related to 25 * The <code>PPB_Messaging</code> interface is implemented by the browser
26 * sending messages to JavaScript message event listeners on the DOM element 26 * and is related to sending messages to JavaScript message event listeners on
27 * associated with a specific module instance. 27 * the DOM element associated with specific module instance.
28 */ 28 */
29 struct PPB_Messaging { 29 struct PPB_Messaging {
30 /** 30 /**
31 * PostMessage is a pointer to a function that asynchronously invokes any 31 * PostMessage() asynchronously invokes any listeners for message events on
32 * listeners for message events on the DOM element for the given module 32 * the DOM element for the given module instance. A call to PostMessage()
33 * instance. A call to PostMessage() will not block while the message is 33 * will not block while the message is processed.
34 * processed.
35 * 34 *
36 * @param[in] instance A PP_Instance indentifying one instance of a module. 35 * @param[in] instance A <code>PP_Instance</code> indentifying one instance
37 * @param[in] message A PP_Var containing the data to be sent to JavaScript. 36 * of a module.
37 * @param[in] message A <code>PP_Var</code> containing the data to be sent to
38 * JavaScript.
38 * Message can have a numeric, boolean, or string value; arrays and 39 * Message can have a numeric, boolean, or string value; arrays and
39 * dictionaries are not yet supported. Ref-counted var types are copied, and 40 * dictionaries are not yet supported. Ref-counted var types are copied, and
40 * are therefore not shared between the module instance and the browser. 41 * are therefore not shared between the module instance and the browser.
41 * 42 *
42 * Listeners for message events in JavaScript code will receive an object 43 * Listeners for message events in JavaScript code will receive an object
43 * conforming to the HTML 5 MessageEvent interface. Specifically, the value of 44 * conforming to the HTML 5 <code>MessageEvent</code> interface.
44 * message will be contained as a property called data in the received 45 * Specifically, the value of message will be contained as a property called
45 * MessageEvent. 46 * data in the received <code>MessageEvent</code>.
46 * 47 *
47 * This messaging system is similar to the system used for listening for 48 * This messaging system is similar to the system used for listening for
48 * messages from Web Workers. Refer to 49 * messages from Web Workers. Refer to
49 * http://www.whatwg.org/specs/web-workers/current-work/ for further 50 * <code>http://www.whatwg.org/specs/web-workers/current-work/</code> for
50 * information. 51 * further information.
51 * 52 *
52 * <strong>Example:</strong> 53 * <strong>Example:</strong>
53 * 54 *
54 * @code 55 * @code
55 * 56 *
56 * <body> 57 * <body>
57 * <object id="plugin" 58 * <object id="plugin"
58 * type="application/x-ppapi-postMessage-example"/> 59 * type="application/x-ppapi-postMessage-example"/>
59 * <script type="text/javascript"> 60 * <script type="text/javascript">
60 * var plugin = document.getElementById('plugin'); 61 * var plugin = document.getElementById('plugin');
(...skipping 21 matching lines...) Expand all
82 * 83 *
83 * The browser will pop-up an alert saying "Hello world!" 84 * The browser will pop-up an alert saying "Hello world!"
84 */ 85 */
85 void (*PostMessage)(PP_Instance instance, struct PP_Var message); 86 void (*PostMessage)(PP_Instance instance, struct PP_Var message);
86 }; 87 };
87 /** 88 /**
88 * @} 89 * @}
89 */ 90 */
90 91
91 #endif /* PPAPI_C_PPB_MESSAGING_H_ */ 92 #endif /* PPAPI_C_PPB_MESSAGING_H_ */
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