mirror of
https://github.com/encode/django-rest-framework.git
synced 2024-11-23 10:03:57 +03:00
104 lines
3.1 KiB
JavaScript
104 lines
3.1 KiB
JavaScript
|
/* ==========================================================
|
||
|
|
* bootstrap-affix.js v2.1.1
|
||
|
|
* http://twitter.github.com/bootstrap/javascript.html#affix
|
||
|
|
* ==========================================================
|
||
|
|
* Copyright 2012 Twitter, Inc.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
* ========================================================== */
|
||
|
|
|
||
|
|
|
||
|
|
!function ($) {
|
||
|
|
|
||
|
|
"use strict"; // jshint ;_;
|
||
|
|
|
||
|
|
|
||
|
|
/* AFFIX CLASS DEFINITION
|
||
|
|
* ====================== */
|
||
|
|
|
||
|
|
var Affix = function (element, options) {
|
||
|
|
this.options = $.extend({}, $.fn.affix.defaults, options)
|
||
|
|
this.$window = $(window).on('scroll.affix.data-api', $.proxy(this.checkPosition, this))
|
||
|
|
this.$element = $(element)
|
||
|
|
this.checkPosition()
|
||
|
|
}
|
||
|
|
|
||
|
|
Affix.prototype.checkPosition = function () {
|
||
|
|
if (!this.$element.is(':visible')) return
|
||
|
|
|
||
|
|
var scrollHeight = $(document).height()
|
||
|
|
, scrollTop = this.$window.scrollTop()
|
||
|
|
, position = this.$element.offset()
|
||
|
|
, offset = this.options.offset
|
||
|
|
, offsetBottom = offset.bottom
|
||
|
|
, offsetTop = offset.top
|
||
|
|
, reset = 'affix affix-top affix-bottom'
|
||
|
|
, affix
|
||
|
|
|
||
|
|
if (typeof offset != 'object') offsetBottom = offsetTop = offset
|
||
|
|
if (typeof offsetTop == 'function') offsetTop = offset.top()
|
||
|
|
if (typeof offsetBottom == 'function') offsetBottom = offset.bottom()
|
||
|
|
|
||
|
|
affix = this.unpin != null && (scrollTop + this.unpin <= position.top) ?
|
||
|
|
false : offsetBottom != null && (position.top + this.$element.height() >= scrollHeight - offsetBottom) ?
|
||
|
|
'bottom' : offsetTop != null && scrollTop <= offsetTop ?
|
||
|
|
'top' : false
|
||
|
|
|
||
|
|
if (this.affixed === affix) return
|
||
|
|
|
||
|
|
this.affixed = affix
|
||
|
|
this.unpin = affix == 'bottom' ? position.top - scrollTop : null
|
||
|
|
|
||
|
|
this.$element.removeClass(reset).addClass('affix' + (affix ? '-' + affix : ''))
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* AFFIX PLUGIN DEFINITION
|
||
|
|
* ======================= */
|
||
|
|
|
||
|
|
$.fn.affix = function (option) {
|
||
|
|
return this.each(function () {
|
||
|
|
var $this = $(this)
|
||
|
|
, data = $this.data('affix')
|
||
|
|
, options = typeof option == 'object' && option
|
||
|
|
if (!data) $this.data('affix', (data = new Affix(this, options)))
|
||
|
|
if (typeof option == 'string') data[option]()
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
$.fn.affix.Constructor = Affix
|
||
|
|
|
||
|
|
$.fn.affix.defaults = {
|
||
|
|
offset: 0
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* AFFIX DATA-API
|
||
|
|
* ============== */
|
||
|
|
|
||
|
|
$(window).on('load', function () {
|
||
|
|
$('[data-spy="affix"]').each(function () {
|
||
|
|
var $spy = $(this)
|
||
|
|
, data = $spy.data()
|
||
|
|
|
||
|
|
data.offset = data.offset || {}
|
||
|
|
|
||
|
|
data.offsetBottom && (data.offset.bottom = data.offsetBottom)
|
||
|
|
data.offsetTop && (data.offset.top = data.offsetTop)
|
||
|
|
|
||
|
|
$spy.affix(data)
|
||
|
|
})
|
||
|
|
})
|
||
|
|
|
||
|
|
|
||
|
|
}(window.jQuery);
|