var App_Search = {

    _formId: 'search-menu-form',
    _queryInputObj: null,
    _searchResultsClass: 'search_result',
    _url: '',
    _maxItemsCount: 3,
    _autocompleteBlock: null,
    _query: '',
    _key: {RETURN: 13, ESC: 27, DEL: 46},
    _searchSubmit: false,
    _needInit: true,
    _autocompleteBlockWidth: 630,
    _mouseOverBlock: false,

    init: function(params)
    {
        var timeout;

        App_Search._url = params.url;
        App_Search._queryInputObj = $('form#' + App_Search._formId).find('input[name="query"]');

        if (App_Search._queryInputObj.length > 0 && App_Search._url.length > 0) {

            $.browser.opera && $('form#' + App_Search._formId).bind("submit.search", function() {
                if (App_Search._searchSubmit) {
                    App_Search._searchSubmit = false;
                    return false;
                }
                return true;
            });

            App_Search._queryInputObj.attr("autocomplete", "off");

            App_Search._queryInputObj.focusin(function() {
                App_Search.search();
            }).focusout(function() {
                if (!App_Search._mouseOverBlock && !App_Search._needInit) {
                    App_Search._autocompleteBlock.hide();
                }
            });

            App_Search._queryInputObj.bind($.browser.opera ? 'keypress' : 'keydown' + '.search', function(event) {
                App_Search.initAutocompleteBlock();
                switch(event.keyCode) {
                    case App_Search._key.RETURN:
                        App_Search._searchSubmit = true;
                        break;
                    case App_Search._key.ESC:
                        App_Search._autocompleteBlock.hide();
                        break;
                    case App_Search._key.DEL:
                        if (App_Search._queryInputObj.val().length == 0) {
                            App_Search._autocompleteBlock.hide();
                        }
                        break;
                    default:
                        clearTimeout(timeout);
                        timeout = setTimeout(App_Search.search, 10);
                        break;
                }
            });
        }

        return false;
    },

    search: function()
    {
        var query = App_Search.trimWords(App_Search._queryInputObj.val().toLowerCase());
        if (query.length > 0) {
            App_Search._queryInputObj.addClass('loading');
            $.ajax({
                dataType: 'html',
                url     : App_Search._url,
                data    : ({query: query, limit: App_Search._maxItemsCount}),
                type    : 'GET',
                success : function (data, textStatus) {
                    if (textStatus == 'success' && data.length > 0) {
                        App_Search.displayAutocompleteBlock(data);
                    } else {
                        App_Search._autocompleteBlock.hide();
                    }
                    return false;
                }
            });
        }
        if (!App_Search._needInit) {
            App_Search._autocompleteBlock.hide();
        }
        return false;
    },

    trimWords: function(value)
    {
		if (!value) {
			return '';
        }
        return $.trim(value.replace('%', '').replace('\\', ''));
	},

    initAutocompleteBlock: function()
    {
        if (!App_Search._needInit) {
            return false;
        }
        App_Search._autocompleteBlock = $("<div/>")
            .hide()
            .addClass(App_Search._searchResultsClass)
            .css("position", "absolute")
            .appendTo(document.body);

        App_Search._needInit = false;
        App_Search._autocompleteBlock.bind("mouseover", function() {
            App_Search._mouseOverBlock = true;
             $('body').unbind();
        });
        App_Search._autocompleteBlock.bind("mouseleave", function() {
            App_Search._mouseOverBlock = false;
            $('body').bind('click', function() {App_Search._autocompleteBlock.hide()})
        });
    },

    displayAutocompleteBlock: function(data)
    {
        App_Search._autocompleteBlock.empty().append(data);

        if ( $.fn.bgiframe ) {
			App_Search._autocompleteBlock.bgiframe();
        }

        var offset = App_Search._queryInputObj.offset();
        var width = App_Search._autocompleteBlockWidth;
        var inputDOM = App_Search._queryInputObj.get(0);

        App_Search._autocompleteBlock.css({
            width: typeof width == "string" || width > 0 ? width : App_Search._autocompleteBlock.width(),
            top: offset.top + inputDOM.offsetHeight,
            left: offset.left
        }).show();
        App_Search._queryInputObj.removeClass('loading');
    }
};