Website : rimsha.abasa.com
backdoor
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
var
/
canvas
/
node_modules
/
@canvas
/
jquery-sticky
/
Filename :
index.js
back
Copy
// // Copyright (C) 2012 - present Instructure, Inc. // // This file is part of Canvas. // // Canvas is free software: you can redistribute it and/or modify it under // the terms of the GNU Affero General Public License as published by the Free // Software Foundation, version 3 of the License. // // Canvas is distributed in the hope that it will be useful, but WITHOUT ANY // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR // A PARTICULAR PURPOSE. See the GNU Affero General Public License for more // details. // // You should have received a copy of the GNU Affero General Public License along // with this program. If not, see <http://www.gnu.org/licenses/>. import {debounce, reject} from 'lodash' import $ from 'jquery' export default class Sticky { static instances = [] static initialized = false static $container = $(window) static initialize() { this.$container.on('scroll', debounce(this.checkInstances, 10)) this.initialized = true } static addInstance(instance) { if (!this.initialized) this.initialize() this.instances.push(instance) this.checkInstances() } static removeInstance(instance) { if (!this.initialized) this.initialize() this.instances = reject(this.instances, i => i === instance) this.checkInstances() } static checkInstances() { const containerTop = Sticky.$container.scrollTop() Sticky.instances.forEach(instance => { if (containerTop >= instance.top) { if (!instance.stuck) instance.stick() } else if (instance.stuck) instance.unstick() }) } constructor($el) { this.$el = $el this.top = this.$el.offset().top this.stuck = false this.constructor.addInstance(this) } stick() { this.$el.addClass('sticky') this.stuck = true } unstick() { this.$el.removeClass('sticky') this.stuck = false } remove() { this.unstick() this.constructor.removeInstance(this) } } $.fn.sticky = function () { return this.each(function () { new Sticky($(this)) }) } $(() => $('[data-sticky]').sticky())