define([
'jquery'
], function ($) {
function Tokenizer (decorated, $element, options) {
var tokenizer = options.get('tokenizer');
if (tokenizer !== undefined) {
this.tokenizer = tokenizer;
}
decorated.call(this, $element, options);
}
Tokenizer.prototype.bind = function (decorated, container, $container) {
decorated.call(this, container, $container);
this.$search = container.dropdown.$search || container.selection.$search ||
$container.find('.select2-search__field');
};
Tokenizer.prototype.query = function (decorated, params, callback) {
var self = this;
function createAndSelect (data) {
// Normalize the data object so we can use it for checks
var item = self._normalizeItem(data);
// Check if the data object already exists as a tag
// Select it if it doesn't
var $existingOptions = self.$element.find('option').filter(function () {
return $(this).val() === item.id;
});
// If an existing option wasn't found for it, create the option
if (!$existingOptions.length) {
var $option = self.option(item);
$option.attr('data-select2-tag', true);
self._removeOldTags();
self.addOptions([$option]);
}
// Select the item, now that we know there is an option for it
select(item);
}
function select (data) {
self.trigger('select', {
data: data
});
}
params.term = params.term || '';
var tokenData = this.tokenizer(params, this.options, createAndSelect);
if (tokenData.term !== params.term) {
// Replace the search term if we have the search box
if (this.$search.length) {
this.$search.val(tokenData.term);
this.$search.focus();
}
params.term = tokenData.term;
}
decorated.call(this, params, callback);
};
Tokenizer.prototype.tokenizer = function (_, params, options, callback) {
var separators = options.get('tokenSeparators') || [];
var term = params.term;
var i = 0;
var createTag = this.createTag || function (params) {
return {
id: params.term,
text: params.term
};
};
while (i < term.length) {
var termChar = term[i];
if ($.inArray(termChar, separators) === -1) {
i++;
continue;
}
var part = term.substr(0, i);
var partParams = $.extend({}, params, {
term: part
});
var data = createTag(partParams);
if (data == null) {
i++;
continue;
}
callback(data);
// Reset the term to not include the tokenized portion
term = term.substr(i + 1) || '';
i = 0;
}
return {
term: term
};
};
return Tokenizer;
});
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