| Index: third_party/polymer/components-chromium/core-shared-lib/core-shared-lib-extracted.js
|
| diff --git a/third_party/polymer/components-chromium/core-shared-lib/core-shared-lib-extracted.js b/third_party/polymer/components-chromium/core-shared-lib/core-shared-lib-extracted.js
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..93627ba7b95b60c1750916e9a783a2927844fe1e
|
| --- /dev/null
|
| +++ b/third_party/polymer/components-chromium/core-shared-lib/core-shared-lib-extracted.js
|
| @@ -0,0 +1,116 @@
|
| +
|
| +(function() {
|
| +
|
| + Polymer('core-shared-lib',{
|
| +
|
| + notifyEvent: 'core-shared-lib-load',
|
| +
|
| + ready: function() {
|
| + if (!this.url && this.defaultUrl) {
|
| + this.url = this.defaultUrl;
|
| + }
|
| + },
|
| +
|
| + urlChanged: function() {
|
| + require(this.url, this, this.callbackName);
|
| + },
|
| +
|
| + provide: function() {
|
| + this.async('notify');
|
| + },
|
| +
|
| + notify: function() {
|
| + this.fire(this.notifyEvent, arguments);
|
| + }
|
| +
|
| + });
|
| +
|
| + var apiMap = {};
|
| +
|
| + function require(url, notifiee, callbackName) {
|
| + // make hashable string form url
|
| + var name = nameFromUrl(url);
|
| + // lookup existing loader instance
|
| + var loader = apiMap[name];
|
| + // create a loader as needed
|
| + if (!loader) {
|
| + loader = apiMap[name] = new Loader(name, url, callbackName);
|
| + }
|
| + loader.requestNotify(notifiee);
|
| + }
|
| +
|
| + function nameFromUrl(url) {
|
| + return url.replace(/[\:\/\%\?\&\.\=\-]/g, '_') + '_api';
|
| + }
|
| +
|
| + var Loader = function(name, url, callbackName) {
|
| + this.instances = [];
|
| + this.callbackName = callbackName;
|
| + if (this.callbackName) {
|
| + window[this.callbackName] = this.success.bind(this);
|
| + } else {
|
| + if (url.indexOf(this.callbackMacro) >= 0) {
|
| + this.callbackName = name + '_loaded';
|
| + window[this.callbackName] = this.success.bind(this);
|
| + url = url.replace(this.callbackMacro, this.callbackName);
|
| + } else {
|
| + // TODO(sjmiles): we should probably fallback to listening to script.load
|
| + throw 'core-shared-api: a %%callback%% parameter is required in the API url';
|
| + }
|
| + }
|
| + //
|
| + this.addScript(url);
|
| + };
|
| +
|
| + Loader.prototype = {
|
| +
|
| + callbackMacro: '%%callback%%',
|
| + loaded: false,
|
| +
|
| + addScript: function(src) {
|
| + var script = document.createElement('script');
|
| + script.src = src;
|
| + script.onerror = this.error.bind(this);
|
| + var s = document.querySelector('script');
|
| + s.parentNode.insertBefore(script, s);
|
| + this.script = script;
|
| + },
|
| +
|
| + removeScript: function() {
|
| + if (this.script.parentNode) {
|
| + this.script.parentNode.removeChild(this.script);
|
| + }
|
| + this.script = null;
|
| + },
|
| +
|
| + error: function() {
|
| + this.cleanup();
|
| + },
|
| +
|
| + success: function() {
|
| + this.loaded = true;
|
| + this.cleanup();
|
| + this.result = Array.prototype.slice.call(arguments);
|
| + this.instances.forEach(this.provide, this);
|
| + this.instances = null;
|
| + },
|
| +
|
| + cleanup: function() {
|
| + delete window[this.callbackName];
|
| + },
|
| +
|
| + provide: function(instance) {
|
| + instance.notify(instance, this.result);
|
| + },
|
| +
|
| + requestNotify: function(instance) {
|
| + if (this.loaded) {
|
| + this.provide(instance);
|
| + } else {
|
| + this.instances.push(instance);
|
| + }
|
| + }
|
| +
|
| + };
|
| +
|
| +})();
|
|
|