var activeTicker;

//This function should be called by the opened window once a ticker has
//been submitted using the submit button.
function onTickerSubmit() {
    activeTicker.val(this.getSelectedTicker());
    activeTicker.prev("input[name^='INSTRUMENT']").val(this.getSelectedInstrument());
}

$(function() {
    //Hide all ticker add and remove buttons.
    $(".ticker").children(".add, .remove").addClass("hidden");
    //Show add and remove buttons for last visible ticker.
    var lastVisible = $(".ticker:visible:last").children(".add, .remove").removeClass("hidden").end();
    //If the last visible ticker is the first ticker, hide the remove button.
    if (!lastVisible.prevAll(".ticker:first").length)
        lastVisible.children(".remove").addClass("hidden");
    //If the last visible ticker is the last ticker, hide the add button.
    else if (!lastVisible.nextAll(".ticker:first").length)
        lastVisible.children(".add").addClass("hidden");
    
    //Attach behaviour to select element for controlling calendar element visibility.
    $("select[name='TIME_SPAN']").change(function() {
        ($(this).val() == "CUSTOM") ? $(".calendar").show() : $(".calendar").hide();
    })
    //Hide calendar elements if time span is not set to custom.
    .change();
    
    //Attach behavior to ticker find buttons.
    $(".ticker .find").click(function(event) {
        activeTicker = $(this).siblings(":text[name^='TICKER']");
        window.open("/factsheet/ticker_lookup.html", "_blank",
            "width=400, height=350, scrollbars=1, resizable=1");

        event.preventDefault();
    });
    
    //Attach behavior to ticker add buttons.
    $(".ticker .add").click(function(event) {
        //Hide add and remove buttons for the current ticker.
        var nextTicker = $(this).siblings(".remove").andSelf().addClass("hidden")
            //Select the next ticker.
            .parent(".ticker").nextAll(".ticker:first");
        //Clear text field for this ticker.
        nextTicker.children(":text:first").val('').end()
            //Show this ticker and the add and remove buttons for this ticker.
            .children(".add, .remove").andSelf().prev().andSelf().removeClass("hidden");

        //If the next ticker is the last ticker, hide the add button.
        if (!nextTicker.nextAll(".ticker:first").length)
            nextTicker.children(".add").addClass("hidden");
        
        event.preventDefault();
    });
    
    //Attach behavior to ticker remove buttons.
    $(".ticker .remove").click(function(event) {
        //Hide this ticker.
        var prevTicker = $(this).parent(".ticker").prev().andSelf().addClass("hidden")
            //Clear text field for this ticker.
            .children(":text:first").val('').end()
            //Select previous ticker.
            .prevAll(".ticker:first");
        //Show the add and remove buttons for the previous ticker.
        prevTicker.children(".add, .remove").removeClass("hidden");
        
        //If the previous ticker is the last ticker, hide the remove button.
        if (!prevTicker.prevAll(".ticker:first").length)
            prevTicker.children(".remove").addClass("hidden");
        
        event.preventDefault();
    });
    
    //Prevent focus rectangle from drawing in Mozilla.
    $(".ticker a").mousedown(function(event) {
       event.preventDefault();
    });
});