beremiz

SVGHMI: Add an exslt function to collect used widget types, in order to only include necessary JS definitions in furure changes.
svghmi
2020-05-08, Edouard Tisserant
faaf677ea99d
SVGHMI: Add an exslt function to collect used widget types, in order to only include necessary JS definitions in furure changes.
// widgets_common.ysl2
in xsl decl labels(*ptr, name="defs_by_labels") alias call-template {
with "hmi_element", "$hmi_element";
with "labels"{text *ptr};
content;
};
decl optional_labels(*ptr) alias - {
/* TODO add some per label xslt variable to check if exist */
labels(*ptr){
with "mandatory","'no'";
content;
}
};
decl activable_labels(*ptr) alias - {
optional_labels(*ptr) {
with "subelements","'active inactive'";
content;
}
};
template "svg:*", mode="hmi_elements" {
const "widget", "func:widget(@id)";
const "eltid","@id";
| "«@id»": {
| type: "«$widget/@type»",
| args: [
foreach "$widget/arg"
| "«@value»"`if "position()!=last()" > ,`
| ],
| offset: 0,
| indexes: [
foreach "$widget/path" {
choose {
when "not(@index)" {
warning > Widget «$widget/@type» id="«$eltid»" : No match for path "«@value»" in HMI tree
}
otherwise {
| «@index» /* «@value» */ `if "position()!=last()" > ,`
}
}
}
| ],
| element: id("«@id»"),
apply "$widget", mode="widget_defs" with "hmi_element",".";
apply "$widget", mode="widget_subscribe" with "hmi_element",".";
| }`if "position()!=last()" > ,`
def "func:unique_types" {
param "elts_with_type";
choose {
when "count($elts_with_type) > 1" {
const "prior_results","func:unique_types($elts_with_type[position()!=last()])";
choose {
when "$elts_with_type[last()][@type = $prior_results/@type]"{
// type already in
result "$prior_results";
}
otherwise {
result "$prior_results | $elts_with_type[last()]";
}
}
}
otherwise {
result "$elts_with_type";
}
}
}
emit "preamble:hmi-classes" {
const "used_widget_types", "func:unique_types($parsed_widgets/widget)";
apply "$used_widget_types", mode="widget_class";
}
emit "preamble:hmi-elements" {
| var hmi_widgets = {
apply "$hmi_elements", mode="hmi_elements";
| }
}
// default : normal subscribing
template "widget", mode="widget_subscribe" {
| sub: subscribe,
| unsub: unsubscribe,
| apply_cache: widget_apply_cache,
}
// page aren't subscribers
template "widget[@type='Page']", mode="widget_subscribe";
function "defs_by_labels" {
param "labels","''";
param "mandatory","'yes'";
param "subelements","/..";
param "hmi_element";
const "widget_type","@type";
foreach "str:split($labels)" {
const "name",".";
const "elt","$result_svg_ns//*[@id = $hmi_element/@id]//*[@inkscape:label=$name][1]";
choose {
when "not($elt/@id)" {
if "$mandatory='yes'" {
error > «$widget_type» widget must have a «$name» element
}
// otherwise produce nothing
}
otherwise {
| «$name»_elt: id("«$elt/@id»"),
if "$subelements" {
| «$name»_sub: {
foreach "str:split($subelements)" {
const "subname",".";
const "subelt","$elt/*[@inkscape:label=$subname][1]";
choose {
when "not($subelt/@id)" {
if "$mandatory='yes'" {
error > «$widget_type» widget must have a «$name»/«$subname» element
}
| /* missing «$name»/«$subname» element */
}
otherwise {
| "«$subname»": id("«$subelt/@id»")`if "position()!=last()" > ,`
}
}
}
| },
}
}
}
}
}
def "func:escape_quotes" {
param "txt";
// have to use a python string to enter escaped quote
const "frst", !"substring-before($txt,'\"')"!;
const "frstln", "string-length($frst)";
choose {
when "$frstln > 0 and string-length($txt) > $frstln" {
result !"concat($frst,'\\\"',func:escape_quotes(substring-after($txt,'\"')))"!;
}
otherwise {
result "$txt";
}
}
}