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/*!
 * bootstrap-tokenfield
 * https://github.com/sliptree/bootstrap-tokenfield
 * Copyright 2013-2014 Sliptree and other contributors; Licensed MIT
 */

"use strict"; // jshint ;_;

/* TOKENFIELD PUBLIC CLASS DEFINITION
  * ============================== */

var Tokenfield = function (element, options) {
    var _self = this

this.$element = $(element)
    this.textDirection = this.$element.css('direction');

// Extend options
    this.options = $.extend(true, {}, $.fn.tokenfield.defaults, { tokens: this.$element.val() }, this.$element.data(), options)

// Setup delimiters and trigger keys
    this._delimiters = (typeof this.options.delimiter === 'string') ? [this.options.delimiter] : this.options.delimiter
    this._triggerKeys = $.map(this._delimiters, function (delimiter) {
      return delimiter.charCodeAt(0);
    });
    this._firstDelimiter = this._delimiters[0];

// Check for whitespace, dash and special characters
    var whitespace = $.inArray(' ', this._delimiters)
      , dash = $.inArray('-', this._delimiters)

if (whitespace >= 0)
      this._delimiters[whitespace] = '\\s'

if (dash >= 0) {
      delete this._delimiters[dash]
      this._delimiters.unshift('-')
    }

var specialCharacters = ['\\', '$', '[', '{', '^', '.', '|', '?', '*', '+', '(', ')']
    $.each(this._delimiters, function (index, character) {
      var pos = $.inArray(character, specialCharacters)
      if (pos >= 0) _self._delimiters[index] = '\\' + character;
    });

// Store original input width
    var elRules = (window && typeof window.getMatchedCSSRules === 'function') ? window.getMatchedCSSRules( element ) : null
      , elStyleWidth = element.style.width
      , elCSSWidth
      , elWidth = this.$element.width()

if (elRules) {
      $.each( elRules, function (i, rule) {
        if (rule.style.width) {
          elCSSWidth = rule.style.width;
        }
      });
    }

// Move original input out of the way
    var hidingPosition = $('body').css('direction') === 'rtl' ? 'right' : 'left',
        originalStyles = { position: this.$element.css('position') };
    originalStyles[hidingPosition] = this.$element.css(hidingPosition);

this.$element
      .data('original-styles', originalStyles)
      .data('original-tabindex', this.$element.prop('tabindex'))
      .css('position', 'absolute')
      .css(hidingPosition, '-10000px')
      .prop('tabindex', -1)

// Create a wrapper
    this.$wrapper = $('<div class="tokenfield form-control" />')
    if (this.$element.hasClass('input-lg')) this.$wrapper.addClass('input-lg')
    if (this.$element.hasClass('input-sm')) this.$wrapper.addClass('input-sm')
    if (this.textDirection === 'rtl') this.$wrapper.addClass('rtl')

// Create a new input
    var id = this.$element.prop('id') || new Date().getTime() + '' + Math.floor((1 + Math.random()) * 100)
    this.$input = $('<input type="'+this.options.inputType+'" class="token-input" autocomplete="off" />')
                    .appendTo( this.$wrapper )
                    .prop( 'placeholder',  this.$element.prop('placeholder') )
                    .prop( 'id', id + '-tokenfield' )
                    .prop( 'tabindex', this.$element.data('original-tabindex') )

// Re-route original input label to new input
    var $label = $( 'label[for="' + this.$element.prop('id') + '"]' )
    if ( $label.length ) {
      $label.prop( 'for', this.$input.prop('id') )
    }

// Set up a copy helper to handle copy & paste
    this.$copyHelper = $('<input type="text" />').css('position', 'absolute').css(hidingPosition, '-10000px').prop('tabindex', -1).prependTo( this.$wrapper )

// Set wrapper width
    if (elStyleWidth) {
      this.$wrapper.css('width', elStyleWidth);
    }
    else if (elCSSWidth) {
      this.$wrapper.css('width', elCSSWidth);
    }
    // If input is inside inline-form with no width set, set fixed width
    else if (this.$element.parents('.form-inline').length) {
      this.$wrapper.width( elWidth )
    }

// Set tokenfield disabled, if original or fieldset input is disabled
    if (this.$element.prop('disabled') || this.$element.parents('fieldset[disabled]').length) {
      this.disable();
    }

// Set tokenfield readonly, if original input is readonly
    if (this.$element.prop('readonly')) {
      this.readonly();
    }

// Set up mirror for input auto-sizing
    this.$mirror = $('<span style="position:absolute; top:-999px; left:0; white-space:pre;"/>');
    this.$input.css('min-width', this.options.minWidth + 'px')
    $.each([
        'fontFamily',
        'fontSize',
        'fontWeight',
        'fontStyle',
        'letterSpacing',
        'textTransform',
        'wordSpacing',
        'textIndent'
    ], function (i, val) {
        _self.$mirror[0].style[val] = _self.$input.css(val);
    });
    this.$mirror.appendTo( 'body' )

// Insert tokenfield to HTML
    this.$wrapper.insertBefore( this.$element )
    this.$element.prependTo( this.$wrapper )

// Calculate inner input width
    this.update()

// Create initial tokens, if any
    this.setTokens(this.options.tokens, false, ! this.$element.val() && this.options.tokens )

// Start listening to events
    this.listen()

// Initialize autocomplete, if necessary
    if ( ! $.isEmptyObject( this.options.autocomplete ) ) {
      var side = this.textDirection === 'rtl' ? 'right' : 'left'
       ,  autocompleteOptions = $.extend({
            minLength: this.options.showAutocompleteOnFocus ? 0 : null,
            position: { my: side + " top", at: side + " bottom", of: this.$wrapper }
          }, this.options.autocomplete )

this.$input.autocomplete( autocompleteOptions )
    }

// Initialize typeahead, if necessary
    if ( ! $.isEmptyObject( this.options.typeahead ) ) {

var typeaheadOptions = this.options.typeahead
        , defaults = {
            minLength: this.options.showAutocompleteOnFocus ? 0 : null
          }
        , args = $.isArray( typeaheadOptions ) ? typeaheadOptions : [typeaheadOptions, typeaheadOptions]

args[0] = $.extend( {}, defaults, args[0] )

this.$input.typeahead.apply( this.$input, args )
      this.typeahead = true
    }
  }

Tokenfield.prototype = {

constructor: Tokenfield

, createToken: function (attrs, triggerChange) {
      var _self = this

if (typeof attrs === 'string') {
        attrs = { value: attrs, label: attrs }
      } else {
        // Copy objects to prevent contamination of data sources.
        attrs = $.extend( {}, attrs )
      }

if (typeof triggerChange === 'undefined') {
         triggerChange = true
      }

// Normalize label and value
      attrs.value = $.trim(attrs.value.toString());
      attrs.label = attrs.label && attrs.label.length ? $.trim(attrs.label) : attrs.value

// Bail out if has no value or label, or label is too short
      if (!attrs.value.length || !attrs.label.length || attrs.label.length <= this.options.minLength) return

// Bail out if maximum number of tokens is reached
      if (this.options.limit && this.getTokens().length >= this.options.limit) return

// Allow changing token data before creating it
      var createEvent = $.Event('tokenfield:createtoken', { attrs: attrs })
      this.$element.trigger(createEvent)

// Bail out if there if attributes are empty or event was defaultPrevented
      if (!createEvent.attrs || createEvent.isDefaultPrevented()) return

var $token = $('<div class="token" />')
            .append('<span class="token-label" />')
            .append('<a href="#" class="close" tabindex="-1">&times;</a>')
            .data('attrs', attrs)

// Insert token into HTML
      if (this.$input.hasClass('tt-input')) {
        // If the input has typeahead enabled, insert token before it's parent
        this.$input.parent().before( $token )
      } else {
        this.$input.before( $token )
      }

// Temporarily set input width to minimum
      this.$input.css('width', this.options.minWidth + 'px')

var $tokenLabel = $token.find('.token-label')
        , $closeButton = $token.find('.close')

// Determine maximum possible token label width
      if (!this.maxTokenWidth) {
        this.maxTokenWidth =
          this.$wrapper.width() - $closeButton.outerWidth() -
          parseInt($closeButton.css('margin-left'), 10) -
          parseInt($closeButton.css('margin-right'), 10) -
          parseInt($token.css('border-left-width'), 10) -
          parseInt($token.css('border-right-width'), 10) -
          parseInt($token.css('padding-left'), 10) -
          parseInt($token.css('padding-right'), 10)
          parseInt($tokenLabel.css('border-left-width'), 10) -
          parseInt($tokenLabel.css('border-right-width'), 10) -
          parseInt($tokenLabel.css('padding-left'), 10) -
          parseInt($tokenLabel.css('padding-right'), 10)
          parseInt($tokenLabel.css('margin-left'), 10) -
          parseInt($tokenLabel.css('margin-right'), 10)
      }

$tokenLabel.css('max-width', this.maxTokenWidth)
      if (this.options.html)
        $tokenLabel.html(attrs.label)
      else
        $tokenLabel.text(attrs.label)

// Listen to events on token
      $token
        .on('mousedown',  function (e) {
          if (_self._disabled || _self._readonly) return false
          _self.preventDeactivation = true
        })
        .on('click',    function (e) {
          if (_self._disabled || _self._readonly) return false
          _self.preventDeactivation = false

if (e.ctrlKey || e.metaKey) {
            e.preventDefault()
            return _self.toggle( $token )
          }

_self.activate( $token, e.shiftKey, e.shiftKey )
        })
        .on('dblclick', function (e) {
          if (_self._disabled || _self._readonly || !_self.options.allowEditing ) return false
          _self.edit( $token )
        })

$closeButton
          .on('click',  $.proxy(this.remove, this))

// Trigger createdtoken event on the original field
      // indicating that the token is now in the DOM
      this.$element.trigger($.Event('tokenfield:createdtoken', {
        attrs: attrs,
        relatedTarget: $token.get(0)
      }))

// Trigger change event on the original field
      if (triggerChange) {
        this.$element.val( this.getTokensList() ).trigger( $.Event('change', { initiator: 'tokenfield' }) )
      }

// Update tokenfield dimensions
      var _self = this
      setTimeout(function () {
        _self.update()
      }, 0)

// Return original element
      return this.$element.get(0)
    }

, setTokens: function (tokens, add, triggerChange) {
      if (!add) this.$wrapper.find('.token').remove()

if (!tokens) return

if (typeof triggerChange === 'undefined') {
          triggerChange = true
      }

if (typeof tokens === 'string') {
        if (this._delimiters.length) {
          // Split based on delimiters
          tokens = tokens.split( new RegExp( '[' + this._delimiters.join('') + ']' ) )
        } else {
          tokens = [tokens];
        }
      }

var _self = this
      $.each(tokens, function (i, attrs) {
        _self.createToken(attrs, triggerChange)
      })

return this.$element.get(0)
    }

, getTokenData: function($token) {
      var data = $token.map(function() {
        var $token = $(this);
        return $token.data('attrs')
      }).get();

if (data.length == 1) {
        data = data[0];
      }

return data;
    }

, getTokens: function(active) {
      var self = this
        , tokens = []
        , activeClass = active ? '.active' : '' // get active tokens only
      this.$wrapper.find( '.token' + activeClass ).each( function() {
        tokens.push( self.getTokenData( $(this) ) )
      })
      return tokens
  }

, getTokensList: function(delimiter, beautify, active) {
      delimiter = delimiter || this._firstDelimiter
      beautify = ( typeof beautify !== 'undefined' && beautify !== null ) ? beautify : this.options.beautify

var separator = delimiter + ( beautify && delimiter !== ' ' ? ' ' : '')
      return $.map( this.getTokens(active), function (token) {
        return token.value
      }).join(separator)
  }

, getInput: function() {
    return this.$input.val()
  }
      
  , setInput: function (val) {
      if (this.$input.hasClass('tt-input')) {
          // Typeahead acts weird when simply setting input value to empty,
          // so we set the query to empty instead
          this.$input.typeahead('val', val)
      } else {
          this.$input.val(val)
      }
  }

, listen: function () {
      var _self = this

this.$element
        .on('change',   $.proxy(this.change, this))

this.$wrapper
        .on('mousedown',$.proxy(this.focusInput, this))

this.$input
        .on('focus',    $.proxy(this.focus, this))
        .on('blur',     $.proxy(this.blur, this))
        .on('paste',    $.proxy(this.paste, this))
        .on('keydown',  $.proxy(this.keydown, this))
        .on('keypress', $.proxy(this.keypress, this))
        .on('keyup',    $.proxy(this.keyup, this))

this.$copyHelper
        .on('focus',    $.proxy(this.focus, this))
        .on('blur',     $.proxy(this.blur, this))
        .on('keydown',  $.proxy(this.keydown, this))
        .on('keyup',    $.proxy(this.keyup, this))

// Secondary listeners for input width calculation
      this.$input
        .on('keypress', $.proxy(this.update, this))
        .on('keyup',    $.proxy(this.update, this))

this.$input
        .on('autocompletecreate', function() {
          // Set minimum autocomplete menu width
          var $_menuElement = $(this).data('ui-autocomplete').menu.element

var minWidth = _self.$wrapper.outerWidth() -
              parseInt( $_menuElement.css('border-left-width'), 10 ) -
              parseInt( $_menuElement.css('border-right-width'), 10 )

$_menuElement.css( 'min-width', minWidth + 'px' )
        })
        .on('autocompleteselect', function (e, ui) {
          if (_self.createToken( ui.item )) {
            _self.$input.val('')
            if (_self.$input.data( 'edit' )) {
              _self.unedit(true)
            }
          }
          return false
        })
        .on('typeahead:selected typeahead:autocompleted', function (e, datum, dataset) {
          // Create token
          if (_self.createToken( datum )) {
            _self.$input.typeahead('val', '')
            if (_self.$input.data( 'edit' )) {
              _self.unedit(true)
            }
          }
        })

// Listen to window resize
      $(window).on('resize', $.proxy(this.update, this ))

}

, keydown: function (e) {

if (!this.focused) return

var _self = this

switch(e.keyCode) {
        case 8: // backspace
          if (!this.$input.is(document.activeElement)) break
          this.lastInputValue = this.$input.val()
          break

case 37: // left arrow
          leftRight( this.textDirection === 'rtl' ? 'next': 'prev' )
          break

case 38: // up arrow
          upDown('prev')
          break

case 39: // right arrow
          leftRight( this.textDirection === 'rtl' ? 'prev': 'next' )
          break

case 40: // down arrow
          upDown('next')
          break

case 65: // a (to handle ctrl + a)
          if (this.$input.val().length > 0 || !(e.ctrlKey || e.metaKey)) break
          this.activateAll()
          e.preventDefault()
          break

case 9: // tab
        case 13: // enter

// We will handle creating tokens from autocomplete in autocomplete events
          if (this.$input.data('ui-autocomplete') && this.$input.data('ui-autocomplete').menu.element.find("li:has(a.ui-state-focus), li.ui-state-focus").length) break

// We will handle creating tokens from typeahead in typeahead events
          if (this.$input.hasClass('tt-input') && this.$wrapper.find('.tt-cursor').length ) break
          if (this.$input.hasClass('tt-input') && this.$wrapper.find('.tt-hint').val() && this.$wrapper.find('.tt-hint').val().length) break

// Create token
          if (this.$input.is(document.activeElement) && this.$input.val().length || this.$input.data('edit')) {
            return this.createTokensFromInput(e, this.$input.data('edit'));
          }

// Edit token
          if (e.keyCode === 13) {
            if (!this.$copyHelper.is(document.activeElement) || this.$wrapper.find('.token.active').length !== 1) break
            if (!_self.options.allowEditing) break
            this.edit( this.$wrapper.find('.token.active') )
          }
      }

function leftRight(direction) {
        if (_self.$input.is(document.activeElement)) {
          if (_self.$input.val().length > 0) return

direction += 'All'
          var $token = _self.$input.hasClass('tt-input') ? _self.$input.parent()[direction]('.token:first') : _self.$input[direction]('.token:first')
          if (!$token.length) return

_self.preventInputFocus = true
          _self.preventDeactivation = true

_self.activate( $token )
          e.preventDefault()

} else {
          _self[direction]( e.shiftKey )
          e.preventDefault()
        }
      }

function upDown(direction) {
        if (!e.shiftKey) return

if (_self.$input.is(document.activeElement)) {
          if (_self.$input.val().length > 0) return

var $token = _self.$input.hasClass('tt-input') ? _self.$input.parent()[direction + 'All']('.token:first') : _self.$input[direction + 'All']('.token:first')
          if (!$token.length) return

_self.activate( $token )
        }

var opposite = direction === 'prev' ? 'next' : 'prev'
          , position = direction === 'prev' ? 'first' : 'last'

_self.$firstActiveToken[opposite + 'All']('.token').each(function() {
          _self.deactivate( $(this) )
        })

_self.activate( _self.$wrapper.find('.token:' + position), true, true )
        e.preventDefault()
      }

this.lastKeyDown = e.keyCode
    }

, keypress: function(e) {

// Comma
      if ($.inArray( e.which, this._triggerKeys) !== -1 && this.$input.is(document.activeElement)) {
        if (this.$input.val()) {
          this.createTokensFromInput(e)
        }
        return false;
      }
    }

, keyup: function (e) {
      this.preventInputFocus = false

if (!this.focused) return

switch(e.keyCode) {
        case 8: // backspace
          if (this.$input.is(document.activeElement)) {
            if (this.$input.val().length || this.lastInputValue.length && this.lastKeyDown === 8) break

this.preventDeactivation = true
            var $prevToken = this.$input.hasClass('tt-input') ? this.$input.parent().prevAll('.token:first') : this.$input.prevAll('.token:first')

if (!$prevToken.length) break

this.activate( $prevToken )
          } else {
            this.remove(e)
          }
          break

case 46: // delete
          this.remove(e, 'next')
          break
      }
      this.lastKeyUp = e.keyCode
    }

, focus: function (e) {
      this.focused = true
      this.$wrapper.addClass('focus')

if (this.$input.is(document.activeElement)) {
        this.$wrapper.find('.active').removeClass('active')
        this.$firstActiveToken = null

if (this.options.showAutocompleteOnFocus) {
          this.search()
        }
      }
    }

, blur: function (e) {

this.focused = false
      this.$wrapper.removeClass('focus')

if (!this.preventDeactivation && !this.$element.is(document.activeElement)) {
        this.$wrapper.find('.active').removeClass('active')
        this.$firstActiveToken = null
      }

if (!this.preventCreateTokens && (this.$input.data('edit') && !this.$input.is(document.activeElement) || this.options.createTokensOnBlur )) {
        this.createTokensFromInput(e)
      }

this.preventDeactivation = false
      this.preventCreateTokens = false
    }

, paste: function (e) {
      var _self = this

// Add tokens to existing ones
      if (_self.options.allowPasting) {
        setTimeout(function () {
          _self.createTokensFromInput(e)
        }, 1)
      }
    }

, change: function (e) {
      if ( e.initiator === 'tokenfield' ) return // Prevent loops

this.setTokens( this.$element.val() )
    }

, createTokensFromInput: function (e, focus) {
      if (this.$input.val().length < this.options.minLength)
        return // No input, simply return

var tokensBefore = this.getTokensList()
      this.setTokens( this.$input.val(), true )

if (tokensBefore == this.getTokensList() && this.$input.val().length)
        return false // No tokens were added, do nothing (prevent form submit)

this.setInput('')

if (this.$input.data( 'edit' )) {
        this.unedit(focus)
      }

return false // Prevent form being submitted
    }

, next: function (add) {
      if (add) {
        var $firstActiveToken = this.$wrapper.find('.active:first')
          , deactivate = $firstActiveToken && this.$firstActiveToken ? $firstActiveToken.index() < this.$firstActiveToken.index() : false

if (deactivate) return this.deactivate( $firstActiveToken )
      }

var $lastActiveToken = this.$wrapper.find('.active:last')
        , $nextToken = $lastActiveToken.nextAll('.token:first')

if (!$nextToken.length) {
        this.$input.focus()
        return
      }

this.activate($nextToken, add)
    }

, prev: function (add) {

if (add) {
        var $lastActiveToken = this.$wrapper.find('.active:last')
          , deactivate = $lastActiveToken && this.$firstActiveToken ? $lastActiveToken.index() > this.$firstActiveToken.index() : false

if (deactivate) return this.deactivate( $lastActiveToken )
      }

var $firstActiveToken = this.$wrapper.find('.active:first')
        , $prevToken = $firstActiveToken.prevAll('.token:first')

if (!$prevToken.length) {
        $prevToken = this.$wrapper.find('.token:first')
      }

if (!$prevToken.length && !add) {
        this.$input.focus()
        return
      }

this.activate( $prevToken, add )
    }

, activate: function ($token, add, multi, remember) {

if (!$token) return

if (typeof remember === 'undefined') var remember = true

if (multi) var add = true

this.$copyHelper.focus()

if (!add) {
        this.$wrapper.find('.active').removeClass('active')
        if (remember) {
          this.$firstActiveToken = $token
        } else {
          delete this.$firstActiveToken
        }
      }

if (multi && this.$firstActiveToken) {
        // Determine first active token and the current tokens indicies
        // Account for the 1 hidden textarea by subtracting 1 from both
        var i = this.$firstActiveToken.index() - 2
          , a = $token.index() - 2
          , _self = this

this.$wrapper.find('.token').slice( Math.min(i, a) + 1, Math.max(i, a) ).each( function() {
          _self.activate( $(this), true )
        })
      }

$token.addClass('active')
      this.$copyHelper.val( this.getTokensList( null, null, true ) ).select()
    }

, activateAll: function() {
      var _self = this

this.$wrapper.find('.token').each( function (i) {
        _self.activate($(this), i !== 0, false, false)
      })
    }

, deactivate: function($token) {
      if (!$token) return

$token.removeClass('active')
      this.$copyHelper.val( this.getTokensList( null, null, true ) ).select()
    }

, toggle: function($token) {
      if (!$token) return

$token.toggleClass('active')
      this.$copyHelper.val( this.getTokensList( null, null, true ) ).select()
    }

, edit: function ($token) {
      if (!$token) return

var attrs = $token.data('attrs')

// Allow changing input value before editing
      var options = { attrs: attrs, relatedTarget: $token.get(0) }
      var editEvent = $.Event('tokenfield:edittoken', options)
      this.$element.trigger( editEvent )

// Edit event can be cancelled if default is prevented
      if (editEvent.isDefaultPrevented()) return

$token.find('.token-label').text(attrs.value)
      var tokenWidth = $token.outerWidth()

var $_input = this.$input.hasClass('tt-input') ? this.$input.parent() : this.$input

$token.replaceWith( $_input )

this.preventCreateTokens = true

this.$input.val( attrs.value )
                .select()
                .data( 'edit', true )
                .width( tokenWidth )

this.update();

// Indicate that token is now being edited, and is replaced with an input field in the DOM
      this.$element.trigger($.Event('tokenfield:editedtoken', options ))
    }

, unedit: function (focus) {
      var $_input = this.$input.hasClass('tt-input') ? this.$input.parent() : this.$input
      $_input.appendTo( this.$wrapper )

this.$input.data('edit', false)
      this.$mirror.text('')

this.update()

// Because moving the input element around in DOM
      // will cause it to lose focus, we provide an option
      // to re-focus the input after appending it to the wrapper
      if (focus) {
        var _self = this
        setTimeout(function () {
          _self.$input.focus()
        }, 1)
      }
    }

, remove: function (e, direction) {
      if (this.$input.is(document.activeElement) || this._disabled || this._readonly) return

var $token = (e.type === 'click') ? $(e.target).closest('.token') : this.$wrapper.find('.token.active')

if (e.type !== 'click') {
        if (!direction) var direction = 'prev'
        this[direction]()

// Was it the first token?
        if (direction === 'prev') var firstToken = $token.first().prevAll('.token:first').length === 0
      }

// Prepare events and their options
      var options = { attrs: this.getTokenData( $token ), relatedTarget: $token.get(0) }
        , removeEvent = $.Event('tokenfield:removetoken', options)

this.$element.trigger(removeEvent);

// Remove event can be intercepted and cancelled
      if (removeEvent.isDefaultPrevented()) return

var removedEvent = $.Event('tokenfield:removedtoken', options)
        , changeEvent = $.Event('change', { initiator: 'tokenfield' })

// Remove token from DOM
      $token.remove()

// Trigger events
      this.$element.val( this.getTokensList() ).trigger( removedEvent ).trigger( changeEvent )

// Focus, when necessary:
      // When there are no more tokens, or if this was the first token
      // and it was removed with backspace or it was clicked on
      if (!this.$wrapper.find('.token').length || e.type === 'click' || firstToken) this.$input.focus()

// Adjust input width
      this.$input.css('width', this.options.minWidth + 'px')
      this.update()

// Cancel original event handlers
      e.preventDefault()
      e.stopPropagation()
    }

/**
     * Update tokenfield dimensions
     */
  , update: function (e) {
      var value = this.$input.val()
        , inputPaddingLeft = parseInt(this.$input.css('padding-left'), 10)
        , inputPaddingRight = parseInt(this.$input.css('padding-right'), 10)
        , inputPadding = inputPaddingLeft + inputPaddingRight

if (this.$input.data('edit')) {

if (!value) {
          value = this.$input.prop("placeholder")
        }
        if (value === this.$mirror.text()) return

this.$mirror.text(value)

var mirrorWidth = this.$mirror.width() + 10;
        if ( mirrorWidth > this.$wrapper.width() ) {
          return this.$input.width( this.$wrapper.width() )
        }

this.$input.width( mirrorWidth )
      }
      else {
        //temporary reset width to minimal value to get proper results
        this.$input.width(this.options.minWidth);
        
        var w = (this.textDirection === 'rtl')
              ? this.$input.offset().left + this.$input.outerWidth() - this.$wrapper.offset().left - parseInt(this.$wrapper.css('padding-left'), 10) - inputPadding - 1
              : this.$wrapper.offset().left + this.$wrapper.width() + parseInt(this.$wrapper.css('padding-left'), 10) - this.$input.offset().left - inputPadding;
        //
        // some usecases pre-render widget before attaching to DOM,
        // dimensions returned by jquery will be NaN -> we default to 100%
        // so placeholder won't be cut off.
        isNaN(w) ? this.$input.width('100%') : this.$input.width(w);
      }
    }

, focusInput: function (e) {
      if ( $(e.target).closest('.token').length || $(e.target).closest('.token-input').length || $(e.target).closest('.tt-dropdown-menu').length ) return
      // Focus only after the current call stack has cleared,
      // otherwise has no effect.
      // Reason: mousedown is too early - input will lose focus
      // after mousedown. However, since the input may be moved
      // in DOM, there may be no click or mouseup event triggered.
      var _self = this
      setTimeout(function() {
        _self.$input.focus()
      }, 0)
    }

, search: function () {
      if ( this.$input.data('ui-autocomplete') ) {
        this.$input.autocomplete('search')
      }
    }

, disable: function () {
      this.setProperty('disabled', true);
    }

, enable: function () {
      this.setProperty('disabled', false);
    }

, readonly: function () {
      this.setProperty('readonly', true);
    }

, writeable: function () {
      this.setProperty('readonly', false);
    }

, setProperty: function(property, value) {
      this['_' + property] = value;
      this.$input.prop(property, value);
      this.$element.prop(property, value);
      this.$wrapper[ value ? 'addClass' : 'removeClass' ](property);
  }

, destroy: function() {
      // Set field value
      this.$element.val( this.getTokensList() );
      // Restore styles and properties
      this.$element.css( this.$element.data('original-styles') );
      this.$element.prop( 'tabindex', this.$element.data('original-tabindex') );

// Re-route tokenfield label to original input
      var $label = $( 'label[for="' + this.$input.prop('id') + '"]' )
      if ( $label.length ) {
        $label.prop( 'for', this.$element.prop('id') )
      }

// Move original element outside of tokenfield wrapper
      this.$element.insertBefore( this.$wrapper );

// Remove tokenfield-related data
      this.$element.removeData('original-styles')
                   .removeData('original-tabindex')
                   .removeData('bs.tokenfield');

// Remove tokenfield from DOM
      this.$wrapper.remove();
      this.$mirror.remove();

var $_element = this.$element;

return $_element;
  }

}

/* TOKENFIELD PLUGIN DEFINITION
  * ======================== */

var old = $.fn.tokenfield

$.fn.tokenfield = function (option, param) {
    var value
      , args = []

Array.prototype.push.apply( args, arguments );

var elements = this.each(function () {
      var $this = $(this)
        , data = $this.data('bs.tokenfield')
        , options = typeof option == 'object' && option

if (typeof option === 'string' && data && data[option]) {
        args.shift()
        value = data[option].apply(data, args)
      } else {
        if (!data && typeof option !== 'string' && !param) {
          $this.data('bs.tokenfield', (data = new Tokenfield(this, options)))
          $this.trigger('tokenfield:initialize')
        }
      }
    })

return typeof value !== 'undefined' ? value : elements;
  }

$.fn.tokenfield.defaults = {
    minWidth: 60,
    minLength: 0,
    html: true,
    allowEditing: true,
    allowPasting: true,
    limit: 0,
    autocomplete: {},
    typeahead: {},
    showAutocompleteOnFocus: false,
    createTokensOnBlur: false,
    delimiter: ',',
    beautify: true,
    inputType: 'text'
  }

$.fn.tokenfield.Constructor = Tokenfield

/* TOKENFIELD NO CONFLICT
  * ================== */

$.fn.tokenfield.noConflict = function () {
    $.fn.tokenfield = old
    return this
  }

return Tokenfield;

}));

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