// widget_switch.ysl2

widget_desc("ListSwitch") {
    longdesc
    ||
    ListSwitch widget displays one item of an HMI:List depending on value of
    given variable. Main element of the widget must be a clone of the list or
    of an item of that list.  

    Given variable's current value is compared to list items
    label. For exemple if given variable type
    is HMI_INT and value is 1, then item with label '1' will be displayed.
    If matching variable of type HMI_STRING, then no quotes are needed. 
    For exemple, 'hello' match HMI_STRING 'hello'.
    ||

    shortdesc > Displays item of an HMI:List whose label matches value.

    path name="value" accepts="HMI_INT,HMI_STRING" > value to compare to labels
    
}

widget_class("ListSwitch"){
    ||
        frequency = 5;
    ||
}

widget_defs("ListSwitch") {
    // cloned element must be part of a HMI:List or a HMI:List
    const "targetid", "substring-after($hmi_element/@xlink:href,'#')";
    const "from_list", "$hmi_lists[(@id | */@id) = $targetid]";
    ||
        dispatch: function(value) {
            this.element.href.baseVal = "#"+hmi_widgets["«$from_list/@id»"].items[value];
        },
    ||
}