/* | |
* Copyright 2013 The Polymer Authors. All rights reserved. | |
* Use of this source code is governed by a BSD-style | |
* license that can be found in the LICENSE file. | |
*/ | |
(function() { | |
var scope = window.Loader = {}; | |
var flags = {}; | |
// convert url arguments to flags | |
if (!flags.noOpts) { | |
location.search.slice(1).split('&').forEach(function(o) { | |
o = o.split('='); | |
o[0] && (flags[o[0]] = o[1] || true); | |
}); | |
} | |
// process global logFlags | |
parseLogFlags(flags); | |
function load(scopeName) { | |
// imports | |
var scope = window[scopeName]; | |
var entryPointName = scope.entryPointName; | |
var processFlags = scope.processFlags; | |
// acquire attributes and base path from entry point | |
var entryPoint = findScript(entryPointName); | |
var base = entryPoint.basePath; | |
// acquire common flags | |
var flags = Loader.flags; | |
// convert attributes to flags | |
var flags = Loader.flags; | |
for (var i=0, a; (a=entryPoint.attributes[i]); i++) { | |
if (a.name !== 'src') { | |
flags[a.name] = a.value || true; | |
} | |
} | |
// parse log flags into global | |
parseLogFlags(flags); | |
// exports | |
scope.basePath = base; | |
scope.flags = flags; | |
// process flags for dynamic dependencies | |
if (processFlags) { | |
processFlags.call(scope, flags); | |
} | |
// post-process imports | |
var modules = scope.modules || []; | |
var sheets = scope.sheets || []; | |
// write script tags for dependencies | |
modules.forEach(function(src) { | |
document.write('<script src="' + base + src + '"></script>'); | |
}); | |
// write link tags for styles | |
sheets.forEach(function(src) { | |
document.write('<link rel="stylesheet" href="' + base + src + '">'); | |
}); | |
} | |
// utility method | |
function findScript(fileName) { | |
var script = document.querySelector('script[src*="' + fileName + '"]'); | |
var src = script.attributes.src.value; | |
script.basePath = src.slice(0, src.indexOf(fileName)); | |
return script; | |
} | |
function parseLogFlags(flags) { | |
var logFlags = window.logFlags = window.logFlags || {}; | |
if (flags.log) { | |
flags.log.split(',').forEach(function(f) { | |
logFlags[f] = true; | |
}); | |
} | |
} | |
scope.flags = flags; | |
scope.load = load; | |
})(); |