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= function (option) {\r\n    var defaults = {\r\n        initialModelUrl: null,\r\n        serviceUrl: null,\r\n        siteSearchUrl: null,\r\n        queryKeyword: null\r\n    };\r\n    var option = $.extend({}, defaults, option);\r\n    var pageContent = $(this);\r\n    var typeAheadTimer;\r\n    var setGroup = false;\r\n\r\n    var viewModel = {};\r\n    viewModel.Keyword = ko.observable('');\r\n    viewModel.TypeAheadResultGroup = ko.observableArray();\r\n    viewModel.IsSearchRunning = ko.observable(false);\r\n    viewModel.selectedResult = ko.observable();\r\n    viewModel.currentNdx = -1;\r\n    $.ajax({\r\n        url: option.initialModelUrl,\r\n        type: \"POST\",\r\n        dataType: \"json\",\r\n        contentType: \"application/json; charset=utf-8\",\r\n        success: function (data) {\r\n            ko.mapping.fromJS(data, {}, viewModel.TypeAheadResultGroup);\r\n        },\r\n        error: function (xhr, textStatus, errorThrown) {\r\n            console.log(xhr);\r\n            console.log(\"textStatus : \" + textStatus);\r\n            console.log(\"errorThrown : \" + errorThrown);\r\n        }\r\n    });\r\n\r\n    viewModel.Search = function (section) {\r\n        if(viewModel.selectedResult() != null && viewModel.selectedResult().Url() && viewModel.selectedResult().Url().length > 0)\r\n            window.location.href = viewModel.selectedResult().Url();\r\n        else{\r\n            var siteSearchUrl = option.siteSearchUrl + \"?\" + option.queryKeyword + \"=\" + encodeURIComponent(viewModel.Keyword());\r\n            window.location.href = siteSearchUrl;\r\n        }\r\n    }\r\n\r\n    viewModel.LoadDataFromServer = function () {\r\n        viewModel.IsSearchRunning(true);\r\n        viewModel.currentNdx = -1;\r\n        viewModel.selectedResult(null);\r\n        var searchTerm = viewModel.Keyword();\r\n        $.ajax({\r\n            url: option.serviceUrl + \"?query=\" + encodeURIComponent(viewModel.Keyword()),\r\n            type: \"POST\",\r\n            dataType: \"json\",\r\n            contentType: \"application/json; charset=utf-8\",\r\n            cache: false,\r\n            success: function (data) {\r\n                var cleanFilter = searchTerm.toLowerCase().replace(/[^a-zA-Z0-9 :]/g, \"\")\r\n                var findArray = cleanFilter.split(/,| /);\r\n                findArray = $.grep(findArray, function (n) { return (n); });\r\n                //each category\r\n                var preservedCaseKeywords = [];\r\n                var keywordIndex = 0;\r\n                ko.utils.arrayForEach(data, function (item) {\r\n                    //each result item\r\n                    keywordIndex = 0;\r\n                    ko.utils.arrayForEach(item.Results, function (childItem) {\r\n                        childItem.DisplayMatched = childItem.Name;\r\n                        //each keyword to highlight in the title\r\n                        ko.utils.arrayForEach(findArray, function (searchItem) {\r\n                            if (searchItem.length > 1) {\r\n                                var regEx = new RegExp('(' + searchItem + ')', \"i\");\r\n                                while(regEx.test(childItem.DisplayMatched)) {\r\n                                preservedCaseKeywords.push(regEx.exec(childItem.DisplayMatched)[0]);\r\n                                childItem.DisplayMatched = childItem.DisplayMatched.replace(regEx, \"###_\" + keywordIndex + \"_###\");\r\n                                keywordIndex++;\r\n                                }\r\n                            }\r\n                        });\r\n                    //\"<strong class='keyword'>$1</strong>\"\r\n                    });\r\n                \r\n                    keywordIndex = 0;\r\n                    var containsPlaceholder = new RegExp('(###_)', \"i\");\r\n                    //to prevent searching for strings contained in the html match getting double-nested, replace them all after\r\n                    ko.utils.arrayForEach(item.Results, function (childItem) {\r\n                        ko.utils.arrayForEach(findArray, function (searchItem) {\r\n                            if (searchItem.length > 1) {\r\n                                while(containsPlaceholder.test(childItem.DisplayMatched)) {\r\n                                var originalCase = preservedCaseKeywords.shift();\r\n                                var regEx = new RegExp('(' + \"###_\" + keywordIndex + \"_###\" + ')', \"i\");\r\n                                childItem.DisplayMatched = childItem.DisplayMatched.replace(regEx, \"<strong class='keyword'>\" + originalCase + \"</strong>\");\r\n                                keywordIndex++;\r\n                                }\r\n                            }\r\n                        });\r\n                    });\r\n                });\r\n                if(setGroup)\r\n                ko.mapping.fromJS(data, {}, viewModel.TypeAheadResultGroup);\r\n                viewModel.IsSearchRunning(false);\r\n            },\r\n            error: function (xhr, textStatus, errorThrown) {\r\n                console.log(xhr);\r\n                viewModel.TypeAheadResultGroup.removeAll();\r\n                console.log(\"textStatus : \" + textStatus);\r\n                console.log(\"errorThrown : \" + errorThrown);\r\n            }\r\n        });\r\n    }\r\n    //these functions handle using arrow keys in the list-style\r\n    //see GlobalMenuBar for example of use\r\n    viewModel.selectPrevious = function () {\r\n        if(viewModel.currentNdx === -1)\r\n            viewModel.currentNdx = 0;\r\n        else\r\n            viewModel.currentNdx--;\r\n        viewModel.selectedResult(this.TypeAheadResultGroup()[0].Results()[viewModel.currentNdx]);\r\n    };\r\n\r\n    viewModel.selectNext = function () {\r\n        if(viewModel.currentNdx === -1)\r\n            viewModel.currentNdx = 0;\r\n        else\r\n            viewModel.currentNdx++;\r\n        viewModel.selectedResult(this.TypeAheadResultGroup()[0].Results()[viewModel.currentNdx]);\r\n    };\r\n    ko.bindingHandlers.bindTypeAheadKeyUp = {\r\n        init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r\n            var options = valueAccessor();\r\n            var allBindings = allBindingsAccessor();\r\n            var observable = options.observable;\r\n\r\n            $(element).keyup(function (event) {\r\n                var $this = $(this);\r\n                var val = $this.val();\r\n                var keycode = (event.keyCode ? event.keyCode : event.which);\r\n\r\n                if (keycode == '38') {\r\n                    viewModel.selectPrevious();\r\n                    return false;\r\n                } else if (keycode == '40') {\r\n                    viewModel.selectNext();\r\n                    return false;\r\n                }\r\n                if (!!val && val.length >= 3) {\r\n                    clearTimeout(typeAheadTimer);\r\n                    setGroup = true;\r\n                    typeAheadTimer = setTimeout(viewModel.LoadDataFromServer, 300);\r\n                }\r\n                else {\r\n                    setGroup = false;\r\n                    viewModel.TypeAheadResultGroup.removeAll();\r\n                }\r\n\r\n                if (keycode == '13') {\r\n                    $('.typeahead-results').hide();\r\n                }\r\n                return false;\r\n            });\r\n        }\r\n    };\r\n\r\n    ko.bindingHandlers.isFocusedEl = {\r\n        init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {\r\n\r\n            if( /Android|iPhone|iPad|BlackBerry|IEMobile/i.test(navigator.userAgent) ) {\r\n\r\n            \r\n            var $textboxInput = $(element);\r\n\r\n               $textboxInput.on('focus.customEv', function() {\r\n                    $textboxInput\r\n                        .closest('.panel-back').addClass('adjust-input-position');\r\n\r\n                    \r\n                    $textboxInput.on('blur.customEv', function() {\r\n                        $textboxInput\r\n                            .closest('.panel-back').removeClass('adjust-input-position');\r\n\r\n                         $textboxInput.off('blur.customEv');\r\n                    });\r\n                });\r\n            }\r\n        }\r\n    };\r\n\r\n    // Apply Bindings\r\n    $.each(pageContent, function (i, o) {\r\n        ko.applyBindings(viewModel, o);\r\n    });\r\n};\r\n"]}