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| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <!-- |
| 4 Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 5 Use of this source code is governed by a BSD-style license that can be |
| 6 found in the LICENSE file. |
| 7 --> |
| 8 <head> |
| 9 <title>Hello, World!</title> |
| 10 |
| 11 <script type="text/javascript"> |
| 12 helloWorldModule = null; // Global application object. |
| 13 statusText = 'NO-STATUS'; |
| 14 |
| 15 // Indicate success when the NaCl module has loaded. |
| 16 function moduleDidLoad() { |
| 17 helloWorldModule = document.getElementById('hello_world'); |
| 18 updateStatus('SUCCESS'); |
| 19 } |
| 20 |
| 21 // Handle a message coming from the NaCl module. |
| 22 function handleMessage(message_event) { |
| 23 alert(message_event.data); |
| 24 } |
| 25 |
| 26 // If the page loads before the Native Client module loads, then set the |
| 27 // status message indicating that the module is still loading. Otherwise, |
| 28 // do not change the status message. |
| 29 function pageDidLoad() { |
| 30 // Set the focus on the text input box. Doing this means you can press |
| 31 // return as soon as the page loads, and it will fire the reversetText() |
| 32 // function. |
| 33 document.forms.helloForm.inputBox.focus(); |
| 34 if (helloWorldModule == null) { |
| 35 updateStatus('LOADING...'); |
| 36 } else { |
| 37 // It's possible that the Native Client module onload event fired |
| 38 // before the page's onload event. In this case, the status message |
| 39 // will reflect 'SUCCESS', but won't be displayed. This call will |
| 40 // display the current message. |
| 41 updateStatus(); |
| 42 } |
| 43 } |
| 44 |
| 45 function fortyTwo() { |
| 46 helloWorldModule.postMessage('fortyTwo'); |
| 47 } |
| 48 |
| 49 function reverseText() { |
| 50 // Grab the text from the text box, pass it into reverseText() |
| 51 var inputBox = document.forms.helloForm.inputBox; |
| 52 helloWorldModule.postMessage('reverseText:' + inputBox.value); |
| 53 // Note: a |false| return tells the <form> tag to cancel the GET action |
| 54 // when submitting the form. |
| 55 return false; |
| 56 } |
| 57 |
| 58 // Set the global status message. If the element with id 'statusField' |
| 59 // exists, then set its HTML to the status message as well. |
| 60 // opt_message The message test. If this is null or undefined, then |
| 61 // attempt to set the element with id 'statusField' to the value of |
| 62 // |statusText|. |
| 63 function updateStatus(opt_message) { |
| 64 if (opt_message) |
| 65 statusText = opt_message; |
| 66 var statusField = document.getElementById('statusField'); |
| 67 if (statusField) { |
| 68 statusField.innerHTML = statusText; |
| 69 } |
| 70 } |
| 71 </script> |
| 72 </head> |
| 73 <body onload="pageDidLoad()"> |
| 74 |
| 75 <h1>Native Client Simple Module</h1> |
| 76 <p> |
| 77 <form name="helloForm" |
| 78 action="" |
| 79 method="get" |
| 80 onsubmit="return reverseText()"> |
| 81 <input type="text" id="inputBox" name="inputBox" value="Hello world" /><p/> |
| 82 <input type="button" value="Call fortyTwo()" onclick="fortyTwo()" /> |
| 83 <input type="submit" value="Call reverseText()" /> |
| 84 </form> |
| 85 <!-- Load the published .nexe. This includes the 'src' attribute which |
| 86 shows how to load multi-architecture modules. Each entry in the "nexes" |
| 87 object in the .nmf manifest file is a key-value pair: the key is the runtime |
| 88 ('x86-32', 'x86-64', etc.); the value is a URL for the desired NaCl module. |
| 89 To load the debug versions of your .nexes, set the 'src' attribute to the |
| 90 _dbg.nmf version of the manifest file. |
| 91 |
| 92 Note: The <EMBED> element is wrapped inside a <DIV>, which has both a 'load' |
| 93 and a 'message' event listener attached. This wrapping method is used |
| 94 instead of attaching the event listeners directly to the <EMBED> element to |
| 95 ensure that the listeners are active before the NaCl module 'load' event |
| 96 fires. This also allows you to use PPB_Messaging.PostMessage() (in C) or |
| 97 pp::Instance.PostMessage() (in C++) from within the initialization code in |
| 98 your NaCl module. |
| 99 --> |
| 100 <div id="listener"> |
| 101 <script type="text/javascript"> |
| 102 var listener = document.getElementById('listener') |
| 103 listener.addEventListener('load', moduleDidLoad, true); |
| 104 listener.addEventListener('message', handleMessage, true); |
| 105 </script> |
| 106 |
| 107 <embed name="nacl_module" |
| 108 id="hello_world" |
| 109 width=0 height=0 |
| 110 src="hello_world_c.nmf" |
| 111 type="application/x-nacl" /> |
| 112 </div> |
| 113 |
| 114 </p> |
| 115 |
| 116 <p>If the module is working correctly, a click on the "Call fortyTwo()" button |
| 117 should open a popup dialog containing <b>42</b> as its value.</p> |
| 118 |
| 119 <p> Clicking on the "Call reverseText()" button |
| 120 should open a popup dialog containing the textbox contents and its reverse |
| 121 as its value.</p> |
| 122 |
| 123 <h2>Status</h2> |
| 124 <div id="statusField">NO-STATUS</div> |
| 125 </body> |
| 126 </html> |
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