/**
* <p>
* Provides pre-built accent-folding result matching filters for AutoComplete.
* </p>
*
* <p>
* These filters are similar to the ones provided by the
* <code>autocomplete-filters</code> module, but use accent-aware comparisons.
* For example, "resume" and "résumé" will be considered equal when using the
* accent-folding filters.
* </p>
*
* @module autocomplete
* @submodule autocomplete-filters-accentfold
*/
/**
* @class AutoCompleteFilters
* @static
*/
var AccentFold = Y.Text.AccentFold,
WordBreak = Y.Text.WordBreak,
YArray = Y.Array,
YObject = Y.Object;
Y.mix(Y.namespace('AutoCompleteFilters'), {
/**
* Accent folding version of <code>charMatch()</code>.
*
* @method charMatchFold
* @param {String} query Query to match
* @param {Array} results Results to filter
* @return {Array} Filtered results
* @static
*/
charMatchFold: function (query, results) {
var queryChars = YArray.unique(AccentFold.fold(query).split(''));
return YArray.filter(results, function (result) {
var text = AccentFold.fold(result.text);
return YArray.every(queryChars, function (chr) {
return text.indexOf(chr) !== -1;
});
});
},
/**
* Accent folding version of <code>phraseMatch()</code>.
*
* @method phraseMatchFold
* @param {String} query Query to match
* @param {Array} results Results to filter
* @return {Array} Filtered results
* @static
*/
phraseMatchFold: function (query, results) {
query = AccentFold.fold(query);
return YArray.filter(results, function (result) {
return AccentFold.fold(result.text).indexOf(query) !== -1;
});
},
/**
* Accent folding version of <code>startsWithFold()</code>.
*
* @method startsWithFold
* @param {String} query Query to match
* @param {Array} results Results to filter
* @return {Array} Filtered results
* @static
*/
startsWithFold: function (query, results) {
query = AccentFold.fold(query);
return YArray.filter(results, function (result) {
return AccentFold.fold(result.text).indexOf(query) === 0;
});
},
/**
* Accent folding version of <code>wordMatchFold()</code>.
*
* @method wordMatchFold
* @param {String} query Query to match
* @param {Array} results Results to filter
* @return {Array} Filtered results
* @static
*/
wordMatchFold: function (query, results) {
var queryWords = WordBreak.getUniqueWords(AccentFold.fold(query));
return YArray.filter(results, function (result) {
// Convert resultWords array to a hash for fast lookup.
var resultWords = YArray.hash(WordBreak.getUniqueWords(
AccentFold.fold(result.text)));
return YArray.every(queryWords, function (word) {
return YObject.owns(resultWords, word);
});
});
}
});