js/10-bootstrap-modal.js

   1 /* ========================================================================
   2  * Bootstrap: modal.js v3.3.1
   3  * http://getbootstrap.com/javascript/#modals
   4  * ========================================================================
   5  * Copyright 2011-2014 Twitter, Inc.
   6  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   7  * ======================================================================== */
   8
   9
  10 +function ($) {
  11   'use strict';
  12
  13   // MODAL CLASS DEFINITION
  14   // ======================
  15
  16   var Modal = function (element, options) {
  17     this.options        = options
  18     this.$body          = $(document.body)
  19     this.$element       = $(element)
  20     this.$backdrop      =
  21     this.isShown        = null
  22     this.scrollbarWidth = 0
  23
  24     if (this.options.remote) {
  25       this.$element
  26         .find('.modal-content')
  27         .load(this.options.remote, $.proxy(function () {
  28           this.$element.trigger('loaded.bs.modal')
  29         }, this))
  30     }
  31   }
  32
  33   Modal.VERSION  = '3.3.1'
  34
  35   Modal.TRANSITION_DURATION = 300
  36   Modal.BACKDROP_TRANSITION_DURATION = 150
  37
  38   Modal.DEFAULTS = {
  39     backdrop: true,
  40     keyboard: true,
  41     show: true
  42   }
  43
  44   Modal.prototype.toggle = function (_relatedTarget) {
  45     return this.isShown ? this.hide() : this.show(_relatedTarget)
  46   }
  47
  48   Modal.prototype.show = function (_relatedTarget) {
  49     var that = this
  50     var e    = $.Event('show.bs.modal', { relatedTarget: _relatedTarget })
  51
  52     this.$element.trigger(e)
  53
  54     if (this.isShown || e.isDefaultPrevented()) return
  55
  56     this.isShown = true
  57
  58     this.checkScrollbar()
  59     this.setScrollbar()
  60     this.$body.addClass('modal-open')
  61
  62     this.escape()
  63     this.resize()
  64
  65     this.$element.on('click.dismiss.bs.modal', '[data-dismiss="modal"]', $.proxy(this.hide, this))
  66
  67     this.backdrop(function () {
  68       var transition = $.support.transition && that.$element.hasClass('fade')
  69
  70       if (!that.$element.parent().length) {
  71         that.$element.appendTo(that.$body) // don't move modals dom position
  72       }
  73
  74       that.$element
  75         .show()
  76         .scrollTop(0)
  77
  78       if (that.options.backdrop) that.adjustBackdrop()
  79       that.adjustDialog()
  80
  81       if (transition) {
  82         that.$element[0].offsetWidth // force reflow
  83       }
  84
  85       that.$element
  86         .addClass('in')
  87         .attr('aria-hidden', false)
  88
  89       that.enforceFocus()
  90
  91       var e = $.Event('shown.bs.modal', { relatedTarget: _relatedTarget })
  92
  93       transition ?
  94         that.$element.find('.modal-dialog') // wait for modal to slide in
  95           .one('bsTransitionEnd', function () {
  96             that.$element.trigger('focus').trigger(e)
  97           })
  98           .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
  99         that.$element.trigger('focus').trigger(e)
 100     })
 101   }
 102
 103   Modal.prototype.hide = function (e) {
 104     if (e) e.preventDefault()
 105
 106     e = $.Event('hide.bs.modal')
 107
 108     this.$element.trigger(e)
 109
 110     if (!this.isShown || e.isDefaultPrevented()) return
 111
 112     this.isShown = false
 113
 114     this.escape()
 115     this.resize()
 116
 117     $(document).off('focusin.bs.modal')
 118
 119     this.$element
 120       .removeClass('in')
 121       .attr('aria-hidden', true)
 122       .off('click.dismiss.bs.modal')
 123
 124     $.support.transition && this.$element.hasClass('fade') ?
 125       this.$element
 126         .one('bsTransitionEnd', $.proxy(this.hideModal, this))
 127         .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
 128       this.hideModal()
 129   }
 130
 131   Modal.prototype.enforceFocus = function () {
 132     $(document)
 133       .off('focusin.bs.modal') // guard against infinite focus loop
 134       .on('focusin.bs.modal', $.proxy(function (e) {
 135         if (this.$element[0] !== e.target && !this.$element.has(e.target).length) {
 136           this.$element.trigger('focus')
 137         }
 138       }, this))
 139   }
 140
 141   Modal.prototype.escape = function () {
 142     if (this.isShown && this.options.keyboard) {
 143       this.$element.on('keydown.dismiss.bs.modal', $.proxy(function (e) {
 144         e.which == 27 && this.hide()
 145       }, this))
 146     } else if (!this.isShown) {
 147       this.$element.off('keydown.dismiss.bs.modal')
 148     }
 149   }
 150
 151   Modal.prototype.resize = function () {
 152     if (this.isShown) {
 153       $(window).on('resize.bs.modal', $.proxy(this.handleUpdate, this))
 154     } else {
 155       $(window).off('resize.bs.modal')
 156     }
 157   }
 158
 159   Modal.prototype.hideModal = function () {
 160     var that = this
 161     this.$element.hide()
 162     this.backdrop(function () {
 163       that.$body.removeClass('modal-open')
 164       that.resetAdjustments()
 165       that.resetScrollbar()
 166       that.$element.trigger('hidden.bs.modal')
 167     })
 168   }
 169
 170   Modal.prototype.removeBackdrop = function () {
 171     this.$backdrop && this.$backdrop.remove()
 172     this.$backdrop = null
 173   }
 174
 175   Modal.prototype.backdrop = function (callback) {
 176     var that = this
 177     var animate = this.$element.hasClass('fade') ? 'fade' : ''
 178
 179     if (this.isShown && this.options.backdrop) {
 180       var doAnimate = $.support.transition && animate
 181
 182       this.$backdrop = $('<div class="modal-backdrop ' + animate + '" />')
 183         .prependTo(this.$element)
 184         .on('click.dismiss.bs.modal', $.proxy(function (e) {
 185           if (e.target !== e.currentTarget) return
 186           this.options.backdrop == 'static'
 187             ? this.$element[0].focus.call(this.$element[0])
 188             : this.hide.call(this)
 189         }, this))
 190
 191       if (doAnimate) this.$backdrop[0].offsetWidth // force reflow
 192
 193       this.$backdrop.addClass('in')
 194
 195       if (!callback) return
 196
 197       doAnimate ?
 198         this.$backdrop
 199           .one('bsTransitionEnd', callback)
 200           .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
 201         callback()
 202
 203     } else if (!this.isShown && this.$backdrop) {
 204       this.$backdrop.removeClass('in')
 205
 206       var callbackRemove = function () {
 207         that.removeBackdrop()
 208         callback && callback()
 209       }
 210       $.support.transition && this.$element.hasClass('fade') ?
 211         this.$backdrop
 212           .one('bsTransitionEnd', callbackRemove)
 213           .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
 214         callbackRemove()
 215
 216     } else if (callback) {
 217       callback()
 218     }
 219   }
 220
 221   // these following methods are used to handle overflowing modals
 222
 223   Modal.prototype.handleUpdate = function () {
 224     if (this.options.backdrop) this.adjustBackdrop()
 225     this.adjustDialog()
 226   }
 227
 228   Modal.prototype.adjustBackdrop = function () {
 229     this.$backdrop
 230       .css('height', 0)
 231       .css('height', this.$element[0].scrollHeight)
 232   }
 233
 234   Modal.prototype.adjustDialog = function () {
 235     var modalIsOverflowing = this.$element[0].scrollHeight > document.documentElement.clientHeight
 236
 237     this.$element.css({
 238       paddingLeft:  !this.bodyIsOverflowing && modalIsOverflowing ? this.scrollbarWidth : '',
 239       paddingRight: this.bodyIsOverflowing && !modalIsOverflowing ? this.scrollbarWidth : ''
 240     })
 241   }
 242
 243   Modal.prototype.resetAdjustments = function () {
 244     this.$element.css({
 245       paddingLeft: '',
 246       paddingRight: ''
 247     })
 248   }
 249
 250   Modal.prototype.checkScrollbar = function () {
 251     this.bodyIsOverflowing = document.body.scrollHeight > document.documentElement.clientHeight
 252     this.scrollbarWidth = this.measureScrollbar()
 253   }
 254
 255   Modal.prototype.setScrollbar = function () {
 256     var bodyPad = parseInt((this.$body.css('padding-right') || 0), 10)
 257     if (this.bodyIsOverflowing) this.$body.css('padding-right', bodyPad + this.scrollbarWidth)
 258   }
 259
 260   Modal.prototype.resetScrollbar = function () {
 261     this.$body.css('padding-right', '')
 262   }
 263
 264   Modal.prototype.measureScrollbar = function () { // thx walsh
 265     var scrollDiv = document.createElement('div')
 266     scrollDiv.className = 'modal-scrollbar-measure'
 267     this.$body.append(scrollDiv)
 268     var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth
 269     this.$body[0].removeChild(scrollDiv)
 270     return scrollbarWidth
 271   }
 272
 273
 274   // MODAL PLUGIN DEFINITION
 275   // =======================
 276
 277   function Plugin(option, _relatedTarget) {
 278     return this.each(function () {
 279       var $this   = $(this)
 280       var data    = $this.data('bs.modal')
 281       var options = $.extend({}, Modal.DEFAULTS, $this.data(), typeof option == 'object' && option)
 282
 283       if (!data) $this.data('bs.modal', (data = new Modal(this, options)))
 284       if (typeof option == 'string') data[option](_relatedTarget)
 285       else if (options.show) data.show(_relatedTarget)
 286     })
 287   }
 288
 289   var old = $.fn.modal
 290
 291   $.fn.modal             = Plugin
 292   $.fn.modal.Constructor = Modal
 293
 294
 295   // MODAL NO CONFLICT
 296   // =================
 297
 298   $.fn.modal.noConflict = function () {
 299     $.fn.modal = old
 300     return this
 301   }
 302
 303
 304   // MODAL DATA-API
 305   // ==============
 306
 307   $(document).on('click.bs.modal.data-api', '[data-toggle="modal"]', function (e) {
 308     var $this   = $(this)
 309     var href    = $this.attr('href')
 310     var $target = $($this.attr('data-target') || (href && href.replace(/.*(?=#[^\s]+$)/, ''))) // strip for ie7
 311     var option  = $target.data('bs.modal') ? 'toggle' : $.extend({ remote: !/#/.test(href) && href }, $target.data(), $this.data())
 312
 313     if ($this.is('a')) e.preventDefault()
 314
 315     $target.one('show.bs.modal', function (showEvent) {
 316       if (showEvent.isDefaultPrevented()) return // only register focus restorer if modal will actually get shown
 317       $target.one('hidden.bs.modal', function () {
 318         $this.is(':visible') && $this.trigger('focus')
 319       })
 320     })
 321     Plugin.call($target, option, this)
 322   })
 323
 324 }(jQuery);