b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
50 lines
1.3 KiB
JavaScript
Executable file
50 lines
1.3 KiB
JavaScript
Executable file
/**
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* Provides a wrapper over the mozApps.getSelf() API. Structured as an
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* evt emitter, with "latest" support, and "latest" is overridden so
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* that the call to getSelf() is delayed until the very first need
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* for it.
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*
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* This allows code to have a handle on this module, instead of making
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* the getSelf() call, and then only trigger the fetch via a call to
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* latest, delaying the work until it is actually needed. Once getSelf()
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* is fetched once, the result is reused.
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*/
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'use strict';
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define(function(require, exports, module) {
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var evt = require('evt');
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var appSelf = evt.mix({}),
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mozApps = navigator.mozApps,
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oldLatest = appSelf.latest,
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loaded = false;
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if (!mozApps) {
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appSelf.self = {};
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loaded = true;
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}
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function loadSelf() {
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mozApps.getSelf().onsuccess = function(event) {
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loaded = true;
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var app = event.target.result;
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appSelf.self = app;
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appSelf.emit('self', appSelf.self);
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};
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}
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// Override latest to only do the work when something actually wants to
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// listen.
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appSelf.latest = function(id) {
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if (!loaded) {
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loadSelf();
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}
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if (id !== 'self') {
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throw new Error(module.id + ' only supports "self" property');
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}
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return oldLatest.apply(this, arguments);
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};
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return appSelf;
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});
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