function IsFilterContains(filter, value)
{
    if (filter.length == 0) { return true; }
    for (i = 0; i < filter.length; i++) { if (filter[i] == value) { return true }; }
    return false;
}

function RenderItemsComboBox(array, control, filter)
{
    control.clearItems();
    if (array == null) { return; }

    // Пустая строка, если текущая страна отсутствует в поиске туроператоров
    if (typeof (DestinationCountryComboBox) != "undefined" && control == DestinationCountryComboBox)
    {
        control.add(new ComboBoxItem('Выберите страну...', -1));
    }

    if (typeof (CurrencyComboBox) != "undefined" && control == CurrencyComboBox)
    {
        control.add(new ComboBoxItem('Любая', -1));
    }

    for (var i = 0; i < array.length; i++)
    {
        if (filter && IsFilterContains(filter, array[i].id))
        {
            var value;
            if (array[i].russianName != null)
                value = array[i].russianName;
            if (array[i].key != null)
                value = array[i].key;
            control.add(new ComboBoxItem(value, array[i].id));
        }
    }
}

function RenderItemsListBox(array, control)
{
    if (array == null) { return; }

    control.clearItems();
    for (var i = 0; i < array.length; i++)
    {
        control.add(new ListBoxItem(array[i].russianName, array[i].id));
    }
    control.dataBind();
}

function ClearList(control)
{
}

function LoadDestinationCities_callback()
{
    RenderItemsListBox(citiesDS, DestinationCitiesListBox);
    // Заполнение блока "Вы искали..."
    if (DestCities != null)
    {
        selectedDestinationCitiesIds = DestCities;
        DestinationCitiesListBox.setValues(DestCities, true);
        if (document.getElementById('youSearch') != null)
        {
            var _cities = DestinationCitiesListBox.getText(DestCities)
            if (_cities != '')
            {
                document.getElementById('youSearch_destCities').innerHTML = _cities;
            }
            else
            {
                document.getElementById('youSearch_destCities').innerHTML = 'не важно, ';
            }
        }
        DestCities = null;
    }
    else
    {
        selectedDestinationCitiesIds = [];
    }
    ClearHotels();
    RenderItemsListBox(hotelsDS, HotelsListBox);
}

function LoadDestinationCitiesWoHotels_callback()
{
    RenderItemsListBox(citiesDS, DestinationCitiesListBox);
    selectedDestinationCitiesIds = [];
}


function LoadDestinationCountries_callback()
{
    RenderItemsComboBox(destinationCountriesDS, DestinationCountryComboBox, DefaultDestinationCountries);
    DestinationCountryComboBox.setValue(selectedDestinationCountryId, true);
    // Заполнение блока "Вы искали..."
    if (document.getElementById('youSearch') != null && selectedDestinationCountryId != -1)
        document.getElementById('youSearch_destCountry').innerHTML = DestinationCountryComboBox.getItem(selectedDestinationCountryId).text;
}

function OnSelectDepartureCity(value)
{
    selectedDepartureCityId = value;
    switch (interrelationshipsOfDepartureCitiesAndDestinationCountries)
    {
        case "DestinationCountriesDependsOnDepartureCities":
            LoadDestinationCountriesByDepartureCity(selectedDepartureCityId, selectedTourTypeId, LoadDestinationCountries_callback);
            break;
        default:
    }
}


function OnSelectDestinationCountryWithoutHotels(value)
{
    selectedDestinationCountryId = value;
    DestinationCitiesListBox.setValues([], false);
    selectedDestinationCitiesIds = [];
    switch (interrelationshipsOfDepartureCitiesAndDestinationCountries)
    {
        case "DepartureCitiesDependsOnDestinationCountries":
            LoadDepartureCitiesByDestinationCountry(selectedDestinationCountryId, selectedTourTypeId, LoadDepartureCities_callback);
            LoadDestinationCities(selectedDestinationCountryId, LoadDestinationCitiesWoHotels_callback);
            break;
        default:
            LoadDestinationCities(selectedDestinationCountryId, LoadDestinationCitiesWoHotels_callback);
    }
}

function OnSelectDestinationCountry(value)
{
    selectedDestinationCountryId = value;
    DestinationCitiesListBox.setValues([], false);
    HotelsListBox.setValues([], false);
    selectedDestinationCitiesIds = [];
    selectedHotelIds = [];
    switch (interrelationshipsOfDepartureCitiesAndDestinationCountries)
    {
        case "DepartureCitiesDependsOnDestinationCountries":
            LoadDepartureCitiesByDestinationCountry(selectedDestinationCountryId, selectedTourTypeId, LoadDepartureCities_callback);
            LoadDestinationCities(selectedDestinationCountryId, LoadDestinationCities_callback);
            break;
        default:
            LoadDestinationCities(selectedDestinationCountryId, LoadDestinationCities_callback);
    }
}

function OnSelectTourType(value)
{
    selectedTourTypeId = value;
    DestinationCitiesListBox.setValues([], false);
    HotelsListBox.setValues([], false);
    selectedDestinationCitiesIds = [];
    selectedHotelIds = [];

    if (value == 4)
    {
        document.getElementById('DepartureCityComboBox_hidden').value = 0;
    }
    else
    {
        document.getElementById('DepartureCityComboBox_hidden').value = 1;
    }

//    LoadDepartureCities(selectedTourTypeId, LoadDepartureCities_callback);

}

function LoadHotels_callback()
{
    RenderItemsListBox(hotelsDS, HotelsListBox);
    ClearRedundantHotels();
}

function OnSelectDestinationCity(selectedArray)
{
    selectedDestinationCitiesIds = selectedArray;
    if (selectedDestinationCitiesIds.length > 0)
    {
        // Если выбран город, то открыть расширенную форму поиска
        if (document.getElementById('extendedSearchTable') != null && document.getElementById('extendedSearchTable').style.display != 'block')
        {
            extendedSearch();
        }
        LoadHotels(selectedDestinationCountryId, selectedDestinationCitiesIds, selectedStarIds, LoadHotels_callback);
    }
    else
    {
        hotelsDS = new Array();
        LoadHotels_callback();
    }
}

function OnSelectDestinationCityWithoutHotels(selectedArray)
{
    selectedDestinationCitiesIds = selectedArray;
}


function OnSelectStar(selectedArray)
{
    selectedStarIds = selectedArray;
    // Если не null, то загрузка отелей уже произошла
    if (Hotels != null) return;
    // Если выбран отель, то открыть расширенную форму поиска
    if (document.getElementById('extendedSearchTable') != null && document.getElementById('extendedSearchTable').style.display != 'block')
    {
        extendedSearch();
    }
    LoadHotels(selectedDestinationCountryId, selectedDestinationCitiesIds, selectedStarIds, LoadHotels_callback);
}


/* Вспомогательные методы */

// Проверяем, что каждому выбранному отелю соответствует отель в листе отелей.
function ClearRedundantHotels()
{
    var selectedHotels = null;
    if (Hotels != null)
    {
        selectedHotels = Hotels;
    }
    else
    {
        selectedHotels = HotelsListBox.selectedItems;
    }
    var hotels = GetHotelList();
    var trustedIds = new Array();
    for (var i = 0; i < selectedHotels.length; i++)
    {
        if (contains(hotels, selectedHotels[i]))
            trustedIds.push(selectedHotels[i]);
    }
    // Заполнение блока "Вы искали..."
    if (Hotels != null)
    {
        HotelsListBox.setValues(trustedIds, true);
        if (document.getElementById('youSearch') != null)
        {
            var _hotels = HotelsListBox.getText(trustedIds);
            if (_hotels != '')
            {
                document.getElementById('youSearch_hotels').innerHTML = _hotels;
            }
            else
            {
                document.getElementById('youSearch_hotels').innerHTML = 'не важно, ';
            }
        }
        Hotels = null;
    }
    HotelsListBox.selectedItems = trustedIds;
    HotelsListBox.valcon.value = trustedIds.join(',');
}

// Возвращает список отелей для текущего города.
function GetHotelList()
{
    var hotels = new Array();
    var hotelsList = HotelsListBox.options;
    for (var i = 0; i < hotelsList.length; i++)
    {
        hotels.push(hotelsList[i].value);
    }
    return hotels;
}