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annotate 3rdparty/bootstrap/js/bootstrap-affix.js @ 5282:b051559eaae8

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Apply upgrading.txt "Improve query editing" upgrade 1.5.1 to 1.6.0. Allows user to continue edit search query if there is an error in query. Otherwise search is lost if it is invalid (e.g. duplicate search name).
author John Rouillard <rouilj@ieee.org>
date Sun, 24 Sep 2017 19:01:56 -0400
parents c109f7c1e477
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4854
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1 /* ==========================================================
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2 * bootstrap-affix.js v2.2.2
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3 * http://twitter.github.com/bootstrap/javascript.html#affix
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4 * ==========================================================
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5 * Copyright 2012 Twitter, Inc.
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6 *
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7 * Licensed under the Apache License, Version 2.0 (the "License");
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8 * you may not use this file except in compliance with the License.
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9 * You may obtain a copy of the License at
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10 *
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11 * http://www.apache.org/licenses/LICENSE-2.0
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12 *
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13 * Unless required by applicable law or agreed to in writing, software
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14 * distributed under the License is distributed on an "AS IS" BASIS,
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15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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16 * See the License for the specific language governing permissions and
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17 * limitations under the License.
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18 * ========================================================== */
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19
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20
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21 !function ($) {
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22
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23 "use strict"; // jshint ;_;
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24
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25
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26 /* AFFIX CLASS DEFINITION
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27 * ====================== */
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28
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29 var Affix = function (element, options) {
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30 this.options = $.extend({}, $.fn.affix.defaults, options)
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31 this.$window = $(window)
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32 .on('scroll.affix.data-api', $.proxy(this.checkPosition, this))
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33 .on('click.affix.data-api', $.proxy(function () { setTimeout($.proxy(this.checkPosition, this), 1) }, this))
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34 this.$element = $(element)
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35 this.checkPosition()
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36 }
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37
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38 Affix.prototype.checkPosition = function () {
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39 if (!this.$element.is(':visible')) return
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40
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41 var scrollHeight = $(document).height()
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42 , scrollTop = this.$window.scrollTop()
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43 , position = this.$element.offset()
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44 , offset = this.options.offset
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45 , offsetBottom = offset.bottom
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46 , offsetTop = offset.top
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47 , reset = 'affix affix-top affix-bottom'
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48 , affix
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49
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50 if (typeof offset != 'object') offsetBottom = offsetTop = offset
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51 if (typeof offsetTop == 'function') offsetTop = offset.top()
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52 if (typeof offsetBottom == 'function') offsetBottom = offset.bottom()
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53
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54 affix = this.unpin != null && (scrollTop + this.unpin <= position.top) ?
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55 false : offsetBottom != null && (position.top + this.$element.height() >= scrollHeight - offsetBottom) ?
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56 'bottom' : offsetTop != null && scrollTop <= offsetTop ?
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57 'top' : false
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58
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59 if (this.affixed === affix) return
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60
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61 this.affixed = affix
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62 this.unpin = affix == 'bottom' ? position.top - scrollTop : null
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63
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64 this.$element.removeClass(reset).addClass('affix' + (affix ? '-' + affix : ''))
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65 }
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66
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67
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68 /* AFFIX PLUGIN DEFINITION
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69 * ======================= */
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70
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71 var old = $.fn.affix
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72
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73 $.fn.affix = function (option) {
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74 return this.each(function () {
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75 var $this = $(this)
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76 , data = $this.data('affix')
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77 , options = typeof option == 'object' && option
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78 if (!data) $this.data('affix', (data = new Affix(this, options)))
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79 if (typeof option == 'string') data[option]()
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80 })
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81 }
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82
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83 $.fn.affix.Constructor = Affix
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84
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85 $.fn.affix.defaults = {
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86 offset: 0
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87 }
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88
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89
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90 /* AFFIX NO CONFLICT
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91 * ================= */
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92
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93 $.fn.affix.noConflict = function () {
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94 $.fn.affix = old
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95 return this
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96 }
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97
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98
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99 /* AFFIX DATA-API
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100 * ============== */
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101
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102 $(window).on('load', function () {
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103 $('[data-spy="affix"]').each(function () {
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104 var $spy = $(this)
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105 , data = $spy.data()
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106
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107 data.offset = data.offset || {}
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108
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109 data.offsetBottom && (data.offset.bottom = data.offsetBottom)
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110 data.offsetTop && (data.offset.top = data.offsetTop)
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111
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112 $spy.affix(data)
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113 })
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114 })
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115
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116
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117 }(window.jQuery);
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