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Viewing file:     multiple.js (3.92 KB)      -rw-r--r--

define([
  'jquery',
  './base',
  '../utils'
], function ($, BaseSelection, Utils) {
  function MultipleSelection ($element, options) {
    MultipleSelection.__super__.constructor.apply(this, arguments);
  }

  Utils.Extend(MultipleSelection, BaseSelection);

  MultipleSelection.prototype.render = function () {
    var $selection = MultipleSelection.__super__.render.call(this);

    $selection[0].classList.add('select2-selection--multiple');

    $selection.html(
      '<ul class="select2-selection__rendered"></ul>'
    );

    return $selection;
  };

  MultipleSelection.prototype.bind = function (container, $container) {
    var self = this;

    MultipleSelection.__super__.bind.apply(this, arguments);

    var id = container.id + '-container';
    this.$selection.find('.select2-selection__rendered').attr('id', id);

    this.$selection.on('click', function (evt) {
      self.trigger('toggle', {
        originalEvent: evt
      });
    });

    this.$selection.on(
      'click',
      '.select2-selection__choice__remove',
      function (evt) {
        // Ignore the event if it is disabled
        if (self.isDisabled()) {
          return;
        }

        var $remove = $(this);
        var $selection = $remove.parent();

        var data = Utils.GetData($selection[0], 'data');

        self.trigger('unselect', {
          originalEvent: evt,
          data: data
        });
      }
    );

    this.$selection.on(
      'keydown',
      '.select2-selection__choice__remove',
      function (evt) {
        // Ignore the event if it is disabled
        if (self.isDisabled()) {
          return;
        }

        evt.stopPropagation();
      }
    );
  };

  MultipleSelection.prototype.clear = function () {
    var $rendered = this.$selection.find('.select2-selection__rendered');
    $rendered.empty();
    $rendered.removeAttr('title');
  };

  MultipleSelection.prototype.display = function (data, container) {
    var template = this.options.get('templateSelection');
    var escapeMarkup = this.options.get('escapeMarkup');

    return escapeMarkup(template(data, container));
  };

  MultipleSelection.prototype.selectionContainer = function () {
    var $container = $(
      '<li class="select2-selection__choice">' +
        '<button type="button" class="select2-selection__choice__remove" ' +
        'tabindex="-1">' +
          '<span aria-hidden="true">&times;</span>' +
        '</button>' +
        '<span class="select2-selection__choice__display"></span>' +
      '</li>'
    );

    return $container;
  };

  MultipleSelection.prototype.update = function (data) {
    this.clear();

    if (data.length === 0) {
      return;
    }

    var $selections = [];

    var selectionIdPrefix = this.$selection.find('.select2-selection__rendered')
      .attr('id') + '-choice-';

    for (var d = 0; d < data.length; d++) {
      var selection = data[d];

      var $selection = this.selectionContainer();
      var formatted = this.display(selection, $selection);

      var selectionId = selectionIdPrefix + Utils.generateChars(4) + '-';

      if (selection.id) {
        selectionId += selection.id;
      } else {
        selectionId += Utils.generateChars(4);
      }

      $selection.find('.select2-selection__choice__display')
        .append(formatted)
        .attr('id', selectionId);

      var title = selection.title || selection.text;

      if (title) {
        $selection.attr('title', title);
      }

      var removeItem = this.options.get('translations').get('removeItem');

      var $remove = $selection.find('.select2-selection__choice__remove');

      $remove.attr('title', removeItem());
      $remove.attr('aria-label', removeItem());
      $remove.attr('aria-describedby', selectionId);

      Utils.StoreData($selection[0], 'data', selection);

      $selections.push($selection);
    }

    var $rendered = this.$selection.find('.select2-selection__rendered');

    $rendered.append($selections);
  };

  return MultipleSelection;
});