// widget_display.ysl2

widget_desc("Display") {

longdesc

||

If Display widget is a svg:text element, then text content is replaced by

value of given variables, space separated.

Otherwise, if Display widget is a group containing a svg:text element

labelled "format", then text content is replaced by printf-like formated

string. In other words, if "format" labeled text is "%d %s %f", then 3

variables paths are expected : HMI_IN, HMI_STRING and HMI_REAL.

In case Display widget is a svg::text element, it is also possible to give

format string as first argument.

||

shortdesc > Printf-like formated text display

arg name="format" count="optional" accepts="string" > printf-like format string when not given as svg:text

path name="fields" count="many" accepts="HMI_INT,HMI_REAL,HMI_STRING,HMI_BOOL" > variables to be displayed

}

widget_class("Display")

||

frequency = 5;

dispatch(value, oldval, index) {

this.fields[index] = value;

if(!this.ready){

this.readyfields[index] = true;

this.ready = this.readyfields.every(x=>x);

}

this.request_animate();

}

||

widget_defs("Display") {

const "format" optional_labels("format");

const "has_format","string-length($format)>0";

value "$format";

if "$hmi_element[not(self::svg:text)] and not($has_format)"

error > Display Widget id="«$hmi_element/@id»" must be a svg::text element itself or a group containing a svg:text element labelled "format"

const "field_initializer" foreach "path" {

choose{

when "@type='HMI_STRING'" > ""

otherwise > 0

}

if "position()!=last()" > ,

}

| fields: [«$field_initializer»],

const "readyfield_initializer" foreach "path" {

> false

if "position()!=last()" > ,

}

| readyfields: [«$readyfield_initializer»],

| ready: false,

| animate: function(){

choose {

when "$has_format" {

| if(this.format_elt.getAttribute("lang")) {

| this.format = svg_text_to_multiline(this.format_elt);

| this.format_elt.removeAttribute("lang");

| }

| let str = vsprintf(this.format,this.fields);

| multiline_to_svg_text(this.format_elt, str, !this.ready);

}

otherwise {

| let str = this.args.length == 1 ? vsprintf(this.args[0],this.fields) : this.fields.join(' ');

| multiline_to_svg_text(this.element, str, !this.ready);

}

}

| },

|

| init: function() {

if "$has_format" {

| this.format = svg_text_to_multiline(this.format_elt);

}

| this.animate();

| },

}