edouard@2883: // widget_display.ysl2
Edouard@2792: 
edouard@3241: widget_desc("Display") {
edouard@3241:     longdesc
edouard@3241:     ||
edouard@3241:     If Display widget is a svg:text element, then text content is replaced by
edouard@3241:     value of given variables, space separated.
edouard@3241: 
edouard@3241:     Otherwise, if Display widget is a group containing a svg:text element
edouard@3241:     labelled "format", then text content is replaced by printf-like formated
edouard@3241:     string. In other words, if "format" labeled text is "%d %s %f", then 3
edouard@3241:     variables paths are expected : HMI_IN, HMI_STRING and HMI_REAL.
edouard@3241: 
edouard@3241:     In case Display widget is a svg::text element, it is also possible to give
edouard@3241:     format string as first argument.
edouard@3241:     ||
edouard@3241: 
edouard@3241:     shortdesc > Printf-like formated text display 
edouard@3241: 
edouard@3241:     arg name="format" count="optional" accepts="string" > printf-like format string when not given as svg:text
edouard@3241: 
edouard@3241:     path name="fields" count="many" accepts="HMI_INT,HMI_REAL,HMI_STRING,HMI_BOOL" > variables to be displayed
edouard@3241:     
edouard@3241: }
edouard@3241: 
Edouard@2790: 
edouard@3232: widget_class("Display")
edouard@2998:     ||
edouard@2998:         frequency = 5;
edouard@3008:         dispatch(value, oldval, index) {
edouard@3008:             this.fields[index] = value;    
edouard@3142:             this.request_animate();
edouard@2998:         }
edouard@2998:     ||
edouard@2998: 
edouard@3232: widget_defs("Display") {
edouard@3142:     const "format" optional_labels("format");
edouard@3142:     const "has_format","string-length($format)>0";
edouard@3142:     value "$format";
edouard@3142: 
edouard@3142:     if "$hmi_element[not(self::svg:text)] and not($has_format)"
edouard@3142:         error > Display Widget id="«$hmi_element/@id»" must be a svg::text element itself or a group containing a svg:text element labelled "format"
edouard@3008: 
Edouard@3022:     const "field_initializer" foreach "path" {
Edouard@3022:         choose{
Edouard@3022:             when "@type='HMI_STRING'" > ""
Edouard@3065:             otherwise > 0
Edouard@3022:         }
Edouard@3022:         if "position()!=last()" > ,
Edouard@3022:     }
Edouard@3022:     |     fields: [«$field_initializer»],
edouard@3142:     |     animate: function(){
edouard@3142:     choose {
edouard@3142:         when "$has_format" {
edouard@3142:     |       if(this.format_elt.getAttribute("lang")) {
edouard@3142:     |           this.format = svg_text_to_multiline(this.format_elt);
edouard@3142:     |           this.format_elt.removeAttribute("lang");
edouard@3142:     |       }
edouard@3142:     |       let str = vsprintf(this.format,this.fields);
edouard@3142:     |       multiline_to_svg_text(this.format_elt, str);
edouard@3142:         }
edouard@3142:         otherwise {
edouard@3142:     |       let str = this.args.length == 1 ? vsprintf(this.args[0],this.fields) : this.fields.join(' ');
edouard@3142:     |       multiline_to_svg_text(this.element, str);
edouard@3142:         }
edouard@3142:     }
edouard@3142:     |     },
edouard@3142:     |     
edouard@3142:     if "$has_format" {
edouard@3142:     |     init: function() {
edouard@3142:     |       this.format = svg_text_to_multiline(this.format_elt);
edouard@3142:     |     },
edouard@3142:     }
Edouard@2753: }