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// Copyright (c) 2012 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.
naclModule = null; // Global application object.
statusText = 'NO-STATUSES';
function extractSearchParameter(name, def_value) {
var nameIndex = window.location.search.indexOf(name + "=");
if (nameIndex != -1) {
var value = location.search.substring(nameIndex + name.length + 1);
var endIndex = value.indexOf("&");
if (endIndex != -1)
value = value.substring(0, endIndex);
return value;
}
return def_value;
}
function createNaClModule(name, tool, width, height) {
var listenerDiv = document.getElementById('listener');
var naclModule = document.createElement('embed');
naclModule.setAttribute('name', 'nacl_module');
naclModule.setAttribute('id', 'nacl_module');
naclModule.setAttribute('width', width);
naclModule.setAttribute('height',height);
naclModule.setAttribute('src', tool + '/' + name + '.nmf');
naclModule.setAttribute('type', 'application/x-nacl');
listenerDiv.appendChild(naclModule);
}
// Indicate success when the NaCl module has loaded.
function moduleDidLoad() {
naclModule = document.getElementById('nacl_module');
updateStatus('SUCCESS');
}
// Handle a message coming from the NaCl module.
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(name, tool, width, height) {
updateStatus('Page loaded.');
if (naclModule == null) {
updateStatus('Creating embed: ' + tool)
width = typeof width !== 'undefined' ? width : 200;
height = typeof height !== 'undefined' ? height : 200;
createNaClModule(name, tool, width, height)
} 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('Waiting.');
}
}
// 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;
}
}
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