// Query
var query = new MWQuery();



// Query object
function MWQuery() {
    this.items = new Array();
    this.fieldsToClear = new Array();
    this.itemsToDelete = new Array();
    this.pageNumber = "";
    this.pageSize = "";
    this.maxPageNumber = "";
    this.resultViewName = "";
    this.sortOrder = "";
    this.maximumNavigatorCriteriaSize = 1500;
    this.resultPage = document.location.pathname; // default to showing search results on "current page"
    this.extraQSParameters = "";

    this.SetExtraQSParameters = function(parameters)
    {
        this.extraQSParameters = parameters;
    }
    
    this.SetResultPage = function(resultPage)
    {
        this.resultPage = resultPage;
    }
    
    this.SetPageInformation = function(pageNumber, pageSize, maxPageNumber) {
        this.pageNumber = pageNumber;
        this.pageSize = pageSize;
        this.maxPageNumber = maxPageNumber;
    }

    this.SetPageNumber = function(number) {
        if ((number == "") || ((parseFloat(number) >= 1) && (parseFloat(number) <= this.maxPageNumber) && (parseFloat(number) != this.pageNumber))) {
            this.pageNumber = number;
            return true;
        }
        return false;
    }

    this.SetPageSize = function(number) {
        if ((number == "") || (parseFloat(number) >= 1))
            this.pageSize = number;
    }

    this.SetResultView = function(name) {
        this.resultViewName = name;
    }

    this.SetSortOrder = function(name) {
        this.sortOrder = name;
    }

    this.CreateNavigator = function(id, selectedCount, selected, options) {
        var uniqueID = this._GetNavigatorID(id);
        this.items[uniqueID] = new MWNavigator(id, selectedCount, selected, options);
    }

    this.SelectNavigatorValue = function(id, value) {
        //clear criterias/navigators, if there are any set to clear for the given id
        this.ClearCriteriaField(id);

        var uniqueID = this._GetNavigatorID(id);
        this.items[uniqueID].SelectValue(value);
        if ((this.maximumNavigatorCriteriaSize > 0) && (this.ToString().length > this.maximumNavigatorCriteriaSize)) {
            this.items[uniqueID].DeselectValue(value);
            return false;
        }
        return true;
    }

    this.DeselectNavigatorValue = function(id, value) {
        var uniqueID = this._GetNavigatorID(id);
        this.items[uniqueID].DeselectValue(value);
    }

    this.SetCriteria = function(id, value, obj) {
        //clear criterias/navigators, if there are any set to clear for the given id
        this.ClearCriteriaField(id);

        var uniqueID = this._GetCriteriaID(id);
        this.items[uniqueID] = new MWCriteria(id, value, obj);
    }

    this.DeleteCriteria = function(id) {
        var uniqueId = this._GetCriteriaID(id);
        delete this.items[uniqueId];
    }

    this.SetInitialValue = function(id, value) {
        var uniqueID = this._GetInitialValueID(id);
        this.items[uniqueID] = new MWInitialValue(id, value);
    }

    this.DeleteInitialValue = function(id) {
        var uniqueID = this._GetInitialValueID(id);
        delete this.items[uniqueID];
    }

    this.SetFieldsToClear = function(id, value) {
        this.fieldsToClear[id] = value;
    }

    this.ClearCriteriaField = function(id) {
        if (this.fieldsToClear[id] != undefined) {
            var fields = this.fieldsToClear[id];

            for (var i = 0; i < fields.length; i++) {
                this.itemsToDelete[this.itemsToDelete.length] = fields[i];
            }
        }
    }

    this.RemoveItemsToDelete = function() {
        for (var i = 0; i < this.itemsToDelete.length; i++) {
            delete this.items[this.itemsToDelete[i]];
        }
    }

    this.RemoveAllNavigatorsAndCriteria = function() {
        for (var uniqueID in this.items)
            delete this.items[uniqueID];
    }

    this.ToString = function()
    {
        // Result view must be first item
        var txt = this._GetValue("RV", this.resultViewName)
            + this._GetValue("SO", this.sortOrder)
            + this._GetValue("PN", this.pageNumber)
            + this._GetValue("PS", this.pageSize);

        for (var uniqueID in this.items)
        {
            var object = this.items[uniqueID];
            if (object.HasValue && object.HasValue()) {
                txt += "|" + uniqueID + ":" + object.ToString();
            }
        }
        
        // Additional parameters
        var parms = (this.extraQSParameters.length == 0) ? "" : "&" + this.extraQSParameters;

        // Return query
        var version = "v0.1";
        return (txt.length == 0) ? "" : base64.encode(version + txt + "|" + version) + parms;
    }

    this.GetCriteria = function(id)
    {
        var uniqueID = this._GetCriteriaID(id);
        return this.items[uniqueID];
    }
    
    this.Escape = function(value) {
        return new String(value).replace(/\|/g, "&mwenc1;").replace(/:/g, "&mwenc2;").replace(/_/g, "&mwenc3;").replace(/=/g, "&mwenc4;");
    }

    this._GetValue = function(id, value) {
        return (value == "") ? "" : "|" + id + ":" + value;
    }

    this._GetNavigatorID = function(id) {
        return "NA:" + id;
    }

    this._GetCriteriaID = function(id) {
        return "CR:" + id;
    }

    this._GetInitialValueID = function(id) {
        return "IV:" + id;
    }
}



// Navigator object
function MWNavigator(id, selectedCount, selected, options) {
    this.id = id;
    this.selectedCount = selectedCount;
    this.selected = selected;
    this.options = options;

    this.SelectValue = function(value) {
        this.selected[value] = this.options[value];
        this.selectedCount++;
    }

    this.DeselectValue = function(value) {
        delete this.selected[value];
        this.selectedCount--;
    }

    this.HasValue = function() {
        return (this.selectedCount > 0);
    }

    this.ToString = function() {
        var txt = "";
        for (var id in this.selected) {
            if (txt != "")
                txt += "_";
            txt += query.Escape(id) + "_" + query.Escape(this.selected[id]);
        }
        return txt;
    }
}



// Criteria object
function MWCriteria(id, value, obj) {
    this.id = id;
    this.value = value;
    this.obj = obj;

    this.HasValue = function() {
        if (this.obj && this.obj.hasClassName('hintShown'))
            return false;

        return (this.value.length > 0);
    }

    this.ToString = function() {
        return query.Escape(this.value);
    }
}

//initial value object
function MWInitialValue(id, value) {
    this.id = id;
    this.value = value;

    this.HasValue = function() {
        return (this.value.length > 0);
    }

    this.ToString = function() {
        return this.value;
    }
}



// Navigator event
function NavigatorOnClick(obj, id) {
    // Ignore clicks on non-items
    if (obj.selectedIndex < 0)
        return false;

    // Add value
    if (!query.SelectNavigatorValue(id, obj[obj.selectedIndex].value)) {
        alert(QueryText["LimitText"]);
        return false;
    }

    // Go to first page
    query.SetPageNumber("");

    // Perform search
    PerformSearch();
}



// Navigator value event
function NavigatorValueOnClick(obj, id, value) {
    // Remove value
    query.DeselectNavigatorValue(id, value);

    // Go to first page
    query.SetPageNumber("");

    // Perform search
    PerformSearch();
}



//Crieteria value event, removes the criteria from the Items list
function CriteriaValueOnClick(obj, id) {
    //remove criteria
    query.DeleteCriteria(id);

    //remove initial value
    query.DeleteInitialValue(id);

    //go to first page
    query.SetPageNumber("");

    //Perform search
    PerformSearch();
}



//Criteria select event, adds the criteria to the items list
function CriteriaOnClick(id, value, initialValue) {
    query.SetCriteria(id, value);

    if ((initialValue != undefined) && (initialValue != null) && (initialValue != "")) {
        query.SetInitialValue(id, initialValue);
    }

    query.SetPageNumber("");

    PerformSearch();
}



// Search button event
function SearchButtonOnClick(obj)
{
    //obsolete
    // Make sure all criteria are up-to-date
    //SetAllCriteria();
 
    //clear all criterias before button searhc clicked, search must be reset #2648
    query.RemoveAllNavigatorsAndCriteria();

    
    // Go to first page
    query.SetPageNumber("");

    // Perform search
    PerformSearch();
}


// Geo search event
function GeoSearchSearch(id, criteria, address) 
{
    // Set the initial value address in the query
    query.SetInitialValue(id, address);

    // Add the criteria to the querqies criteria list
    query.SetCriteria(id, criteria);

    // Perform search
    PerformSearch();
}



// Reset button event
function ResetSearchOnClick(obj) {
    // Clear criteria
    query.RemoveAllNavigatorsAndCriteria();

    // Go to first page
    query.SetPageNumber("");

    // Perform search without updating criteria
    PerformSearchWithoutUpdatingCriteria();
}



// Result view event
function ResultViewOnClick(name) {
    // Set result view
    query.SetResultView(name);

    // Go to page 1 and resize page
    query.SetPageNumber("");
    query.SetPageSize("");

    // Perform search
    PerformSearch();
}



// Sort order event
function SortOrderOnClick(name) {
    // Set sort order
    query.SetSortOrder(name);

    // Perform search
    PerformSearch();
}



// Page size event
function PageSizeOnClick(value) {
    // Go to page 1 and resize page
    query.SetPageNumber("");
    query.SetPageSize(value);

    // Perform search
    PerformSearch();
}



// Go to page event
function GoToPageOnClick(value) {
    // Go to page
    query.SetPageNumber(value);

    // Perform search
    PerformSearch();
}



// Go to first page event
function GoToFirstPageOnClick() {
    // Move
    query.SetPageNumber(1);

    // Perform search
    PerformSearch();
}



// Go to last page event
function GoToLastPageOnClick() {
    // Move
    query.SetPageNumber(query.maxPageNumber);

    // Perform search
    PerformSearch();
}



// Go to next page event
function GoToNextPageOnClick() {
    // Move
    query.SetPageNumber(query.pageNumber + 1);

    // Perform search
    PerformSearch();
}



// Go to previous page event
function GoToPreviousPageOnClick() {
    // Move
    query.SetPageNumber(query.pageNumber - 1);

    // Perform search
    PerformSearch();
}



// Method for performing search
function PerformSearch() {
    // Make sure all criteria are up-to-date
    SetAllCriteria();

    // remove the itmes that have been added for deletion by other search fields
    query.RemoveItemsToDelete();

    // Perform search
    document.location.href = add_to_url(query.resultPage, "query", query.ToString());    
    return false;
}



// Method for performing search without updating criterias
function PerformSearchWithoutUpdatingCriteria() {
    // Perform search
    document.location.href = add_to_url(query.resultPage, "query", query.ToString());
    return false;
}



// Method for getting querystring
function GetQuerystring(action) {
    // Make sure all criteria are up-to-date
    SetAllCriteria();

    // Return new action
    return add_to_url(action, "query", query.ToString());
}