b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
59 lines
1.3 KiB
JavaScript
Executable file
59 lines
1.3 KiB
JavaScript
Executable file
define(function(require, exports, module) {
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'use strict';
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var nextTick = require('common/next_tick');
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function PendingManager() {
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this.objects = [];
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this.pending = 0;
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this.onstart = this.onstart.bind(this);
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this.onend = this.onend.bind(this);
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}
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module.exports = PendingManager;
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PendingManager.prototype = {
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register: function(object) {
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object.on(object.startEvent, this.onstart);
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object.on(object.completeEvent, this.onend);
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if (!this.isPending() && object.pending) {
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// Registering this object will make us pending.
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nextTick(() => this.onpending && this.onpending());
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}
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this.objects.push(object);
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},
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/**
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* Unregister an object.
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* Note it is intended that objects that
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* are unregistered are never in a state
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* where we are waiting for their pending
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* status to complete. If an incomplete
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* object is removed it will break .pending.
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*/
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unregister: function(object) {
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this.objects = this.objects.filter(el => el !== object);
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},
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isPending: function() {
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return this.objects.some(object => object.pending);
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},
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onstart: function() {
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if (!this.pending) {
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this.onpending && this.onpending();
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}
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this.pending++;
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},
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onend: function() {
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this.pending--;
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if (!this.pending) {
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this.oncomplete && this.oncomplete();
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}
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}
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};
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});
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