var Qs_Form_Element_Autocomplete = {

	options: {},
	elementOptions: {},

	init: function(id, options)
	{
		if (typeof options.dataType == 'undefined') {
			options.dataType = 'json';
		}
		if (typeof options.formatResult == 'undefined') {
			options.formatResult = function (row) {
				return row.title;
			}
		}
		if (typeof options.formatMatch == 'undefined') {
			options.formatMatch = function (row, i, max) {
				return row.title;
			}
		}
		if (typeof options.formatItem == 'undefined') {
			options.formatItem = function (data, i, total) {
				return data.title;
			}
		}
		if (typeof options.onNotFound == 'undefined') {
			options.onNotFound = function (element) {
				var valueElement = qs.getPreviousTag(element, 'INPUT');
				if (valueElement) {
					$(valueElement).val('');
				}
				var titleElement = qs.getNextTag(element, 'INPUT');
				if (titleElement) {
					$(titleElement).val('');
				}
			}
		}
		if (typeof options.parse == 'undefined') {
			options.parse = function (data) {
				return Qs_Form_Element_Autocomplete.parse(id, data);
			}
		}
		Qs_Form_Element_Autocomplete.setElementOptions(id, options);
		$('#' + Qs_Form_Element_Autocomplete.getDisplayId(id)).autocomplete(
			options.urlOrData,
			options
		).result(function(event, data, formatted) {
			var valueElement = qs.getPreviousTag(this, 'INPUT');
			var titleElement = qs.getNextTag(this, 'INPUT');
			var value  = '';
			var title  = '';
			if (typeof data != 'undefined') {
				if (typeof data.value != 'undefined') {
					value = data.value;
				}
				if (typeof data.title != 'undefined') {
					title = data.title;
				}
			}
			if (valueElement) {
				$(valueElement).val(value);
			}
			if (titleElement) {
				$(titleElement).val(title);
			}

		});
	},

	parse: function (id, response)
	{
		var parsed = [];
		var options = Qs_Form_Element_Autocomplete.getElementOptions(id);
		for (var i = 0; i < response.length; i++) {
			parsed.push({
				data: response[i],
				value: response[i].title,
				result: options.formatResult && options.formatResult(response[i], response[i].value) || response[i].value
			});
		}
		return parsed;
	},

	getElementOptions: function (id)
    {
        if (typeof Qs_Form_Element_Autocomplete.elementOptions[id] == 'undefined') {
            return null;
        }
        return Qs_Form_Element_Autocomplete.elementOptions[id];
    },

    getElementOption: function (id, name)
    {
        var options = Qs_Form_Element_Autocomplete.getElementOptions(id);
        if (options) {
            if (typeof options[name] != 'undefined') {
                return options[name];
            }
        }
        return null;
    },

    setElementOption: function (id, name, value)
    {
        var options = Qs_Form_Element_Autocomplete.getElementOptions(id);
        if (options) {
            options[name] = value;
        } else {
            Qs_Form_Element_Autocomplete.elementOptions[id] = {name: value};
        }
    },
	setElementOptions: function (id, options)
    {
        Qs_Form_Element_Autocomplete.elementOptions[id] = options;
    },

	getDisplayId: function (id)
	{
		return Qs_Form_Element_Autocomplete.getSystemId(id);
	},

	getTitleId: function (id)
	{
		return Qs_Form_Element_Autocomplete.getSystemId(Qs_Form_Element_Autocomplete.getDisplayId());
	},

	getSystemId: function (id)
    {
        var pos = id.lastIndexOf('-');
        var displayId = '';
        if (-1 != pos) {
            pos++;
			displayId = id.substr(0, pos) + '_' + id.substr(pos);
        } else {
            displayId = '_'  + id;
        }
        return displayId;
    }
}