| <!DOCTYPE html> |
| <html> |
| <!-- |
| Copyright (c) 2013 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. |
| --> |
| <head> |
| |
| <title>hello_tutorial</title> |
| |
| <script type="text/javascript"> |
| HelloTutorialModule = null; // Global application object. |
| statusText = 'NO-STATUS'; |
| |
| // Indicate load success. |
| function moduleDidLoad() { |
| HelloTutorialModule = document.getElementById('hello_tutorial'); |
| updateStatus('SUCCESS'); |
| } |
| |
| // The 'message' event handler. This handler is fired when the NaCl module |
| // posts a message to the browser by calling PPB_Messaging.PostMessage() |
| // (in C) or pp::Instance.PostMessage() (in C++). This implementation |
| // simply displays the content of the message in an alert panel. |
| function handleMessage(message_event) { |
| alert(message_event.data); |
| } |
| |
| // If the page loads before the Native Client module loads, then set the |
| // status message indicating that the module is still loading. Otherwise, |
| // do not change the status message. |
| function pageDidLoad() { |
| if (HelloTutorialModule == null) { |
| updateStatus('LOADING...'); |
| } else { |
| // It's possible that the Native Client module onload event fired |
| // before the page's onload event. In this case, the status message |
| // will reflect 'SUCCESS', but won't be displayed. This call will |
| // display the current message. |
| updateStatus(); |
| } |
| } |
| |
| // Set the global status message. If the element with id 'statusField' |
| // exists, then set its HTML to the status message as well. |
| // opt_message The message test. If this is null or undefined, then |
| // attempt to set the element with id 'statusField' to the value of |
| // |statusText|. |
| function updateStatus(opt_message) { |
| if (opt_message) |
| statusText = opt_message; |
| var statusField = document.getElementById('statusField'); |
| if (statusField) { |
| statusField.innerHTML = statusText; |
| } |
| } |
| </script> |
| </head> |
| <body onload="pageDidLoad()"> |
| |
| <h1>NaCl C++ Tutorial: Getting Started</h1> |
| <p> |
| <!-- |
| Load the published pexe. |
| Note: Since this module does not use any real-estate in the browser, its |
| width and height are set to 0. |
| |
| Note: The <embed> element is wrapped inside a <div>, which has both a 'load' |
| and a 'message' event listener attached. This wrapping method is used |
| instead of attaching the event listeners directly to the <embed> element to |
| ensure that the listeners are active before the NaCl module 'load' event |
| fires. This also allows you to use PPB_Messaging.PostMessage() (in C) or |
| pp::Instance.PostMessage() (in C++) from within the initialization code in |
| your module. |
| --> |
| <div id="listener"> |
| <script type="text/javascript"> |
| var listener = document.getElementById('listener'); |
| listener.addEventListener('load', moduleDidLoad, true); |
| listener.addEventListener('message', handleMessage, true); |
| </script> |
| |
| <embed id="hello_tutorial" |
| width=0 height=0 |
| src="hello_tutorial.nmf" |
| type="application/x-pnacl" /> |
| </div> |
| </p> |
| |
| <h2>Status <code id="statusField">NO-STATUS</code></h2> |
| </body> |
| </html> |
