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/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
</copyright> */
bootstrap("require/browser", function (require) {
var Require = require("require/require"),
Promise = require("core/promise").Promise,
URL = require("core/mini-url"),
GET = "GET",
APPLICATION_JAVASCRIPT_MIMETYPE = "application/javascript",
FILE_PROTOCOL = "file:",
global = typeof global !== "undefined" ? global : window;
Require.getLocation = function() {
return URL.resolve(window.location, ".");
};
Require.overlays = ["window", "browser", "montage"];
// Due to crazy variabile availability of new and old XHR APIs across
// platforms, this implementation registers every known name for the event
// listeners. The promise library ascertains that the returned promise
// is resolved only by the first event.
// http://dl.dropbox.com/u/131998/yui/misc/get/browser-capabilities.html
Require.read = function (url) {
if (URL.resolve(window.location, url).indexOf(FILE_PROTOCOL) === 0) {
throw new Error("XHR does not function for file: protocol");
}
var request = new XMLHttpRequest();
var response = Promise.defer();
function onload() {
if (xhrSuccess(request)) {
response.resolve(request.responseText);
} else {
onerror();
}
}
function onerror() {
response.reject("Can't XHR " + JSON.stringify(url));
}
try {
request.open(GET, url, true);
if (request.overrideMimeType) {
request.overrideMimeType(APPLICATION_JAVASCRIPT_MIMETYPE);
}
request.onreadystatechange = function () {
if (request.readyState === 4) {
onload();
}
};
request.onload = request.load = onload;
request.onerror = request.error = onerror;
} catch (exception) {
response.reject(exception.message, exception);
}
request.send();
return response.promise;
};
// Determine if an XMLHttpRequest was successful
// Some versions of WebKit return 0 for successful file:// URLs
function xhrSuccess(req) {
return (req.status === 200 || (req.status === 0 && req.responseText));
}
// By using a named "eval" most browsers will execute in the global scope.
// http://www.davidflanagan.com/2010/12/global-eval-in.html
// Unfortunately execScript doesn't always return the value of the evaluated expression (at least in Chrome)
var globalEval = /*this.execScript ||*/eval;
// For Firebug evaled code isn't debuggable otherwise
// http://code.google.com/p/fbug/issues/detail?id=2198
if (global.navigator && global.navigator.userAgent.indexOf("Firefox") >= 0) {
globalEval = new Function("_", "return eval(_)");
}
var __FILE__String = "__FILE__",
DoubleUnderscoreString = "__",
globalEvalConstantA = "(function ",
globalEvalConstantB = "(require, exports, module) {",
globalEvalConstantC = "//*/\n})\n//@ sourceURL=";
Require.Compiler = function (config) {
return function(module) {
if (module.factory || module.text === void 0)
return module;
if (config.define)
throw new Error("Can't use eval.");
// Here we use a couple tricks to make debugging better in various browsers:
// TODO: determine if these are all necessary / the best options
// 1. name the function with something inteligible since some debuggers display the first part of each eval (Firebug)
// 2. append the "//@ sourceURL=location" hack (Safari, Chrome, Firebug)
// * http://pmuellr.blogspot.com/2009/06/debugger-friendly.html
// * http://blog.getfirebug.com/2009/08/11/give-your-eval-a-name-with-sourceurl/
// TODO: investigate why this isn't working in Firebug.
// 3. set displayName property on the factory function (Safari, Chrome)
var displayName = __FILE__String+module.location.replace(/\.\w+$|\W/g, DoubleUnderscoreString);
try {
module.factory = globalEval(globalEvalConstantA+displayName+globalEvalConstantB+module.text+globalEvalConstantC+module.location);
} catch (exception) {
throw new SyntaxError("in " + module.location + ": " + exception.message);
}
// This should work and would be simpler, but Firebug does not show scripts executed via "new Function()" constructor.
// TODO: sniff browser?
// module.factory = new Function("require", "exports", "module", module.text + "\n//*/"+sourceURLComment);
module.factory.displayName = displayName;
}
};
Require.XhrLoader = function (config) {
return function (url, module) {
return Require.read(url)
.then(function (text) {
module.type = "javascript";
module.text = text;
module.location = url;
});
};
};
var definitions = {};
var getDefinition = function (hash, id) {
definitions[hash] = definitions[hash] || {};
definitions[hash][id] = definitions[hash][id] || Promise.defer();
return definitions[hash][id];
};
define = function (hash, id, module) {
getDefinition(hash, id).resolve(module);
};
Require.ScriptLoader = function (config) {
var hash = config.packageDescription.hash;
return function (location, module) {
return Promise.call(function () {
// short-cut by predefinition
if (definitions[hash] && definitions[hash][module.id]) {
return definitions[hash][module.id].promise;
}
if (/\.js$/.test(location)) {
location = location.replace(/\.js/, ".load.js");
} else {
location += ".load.js";
}
var script = document.createElement("script");
script.onload = function() {
script.parentNode.removeChild(script);
};
script.onerror = function (error) {
script.parentNode.removeChild(script);
};
script.src = location;
script.defer = true;
document.getElementsByTagName("head")[0].appendChild(script);
return getDefinition(hash, module.id).promise
})
.then(function (definition) {
delete definitions[hash][module.id];
for (var name in definition) {
module[name] = definition[name];
}
module.location = location;
module.directory = URL.resolve(location, ".");
});
};
};
Require.makeLoader = function (config) {
if (config.define) {
Loader = Require.ScriptLoader;
} else {
Loader = Require.XhrLoader;
}
return Require.MappingsLoader(
config,
Require.ExtensionsLoader(
config,
Require.PathsLoader(
config,
Require.MemoizedLoader(
config,
Loader(config)
)
)
)
);
};
});
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