beremiz

SVGHMI: JsonTable now use intermediate variables again to address JSON data without duplicating code or referencing. Using intermediate variables also alows to check for availability of data and stop evaluating early if data is missing. Finally added complete roundtrip example to illustrate use of JSonTable to display "alarms" collected in python from changes on PLC boolean variables.
svghmi
2020-08-25, Edouard Tisserant
4930455428df
SVGHMI: JsonTable now use intermediate variables again to address JSON data without duplicating code or referencing. Using intermediate variables also alows to check for availability of data and stop evaluating early if data is missing. Finally added complete roundtrip example to illustrate use of JSonTable to display "alarms" collected in python from changes on PLC boolean variables.
// hmi_tree.ysl2
// HMI Tree computed from VARIABLES.CSV in svghmi.py
const "hmitree", "ns:GetHMITree()";
const "_categories" {
noindex > HMI_PLC_STATUS
noindex > HMI_CURRENT_PAGE
}
const "categories", "exsl:node-set($_categories)";
// HMI Tree Index
const "_indexed_hmitree" apply "$hmitree", mode="index";
const "indexed_hmitree", "exsl:node-set($_indexed_hmitree)";
emit "preamble:hmi-tree" {
| var hmi_hash = [«$hmitree/@hash»];
|
| var heartbeat_index = «$indexed_hmitree/*[@hmipath = '/HEARTBEAT']/@index»;
|
| var hmitree_types = [
foreach "$indexed_hmitree/*"
| /* «@index» «@hmipath» */ "«substring(local-name(), 5)»"`if "position()!=last()" > ,`
| ]
|
}
template "*", mode="index" {
param "index", "0";
param "parentpath", "''";
const "content" {
const "path"
choose {
when "count(ancestor::*)=0" > /
when "count(ancestor::*)=1" > /«@name»
otherwise > «$parentpath»/«@name»
}
choose {
when "not(local-name() = $categories/noindex)" {
xsl:copy {
attrib "index" > «$index»
attrib "hmipath" > «$path»
foreach "@*" xsl:copy;
}
apply "*[1]", mode="index"{
with "index", "$index + 1";
with "parentpath" > «$path»
}
}
otherwise {
apply "*[1]", mode="index"{
with "index", "$index";
with "parentpath" > «$path»
}
}
}
}
copy "$content";
apply "following-sibling::*[1]", mode="index" {
with "index", "$index + count(exsl:node-set($content)/*)";
with "parentpath" > «$parentpath»
}
}
// Parses:
// "HMI:WidgetType:param1:param2@path1@path2"
//
// Into:
// widget type="WidgetType" id="blah456" {
// arg value="param1";
// arg value="param2";
// path value="path1" index="345";
// path value="path2";
// }
//
template "*", mode="parselabel" {
const "label","@inkscape:label";
const "description", "substring-after($label,'HMI:')";
const "_args", "substring-before($description,'@')";
const "args" choose {
when "$_args" value "$_args";
otherwise value "$description";
}
const "_type", "substring-before($args,':')";
const "type" choose {
when "$_type" value "$_type";
otherwise value "$args";
}
if "$type" widget {
attrib "id" > «@id»
attrib "type" > «$type»
foreach "str:split(substring-after($args, ':'), ':')" {
arg {
attrib "value" > «.»
}
}
const "paths", "substring-after($description,'@')";
foreach "str:split($paths, '@')" {
if "string-length(.) > 0" path {
attrib "value" > «.»
const "path", ".";
const "item", "$indexed_hmitree/*[@hmipath = $path]";
choose {
when "count($item) = 1" {
attrib "index" > «$item/@index»
attrib "type" > «local-name($item)»
}
otherwise {
choose {
when "regexp:test($path,'^\.[a-zA-Z0-9_]+')" {
attrib "type" > PAGE_LOCAL
}
when "regexp:test($path,'^[a-zA-Z0-9_]+')" {
attrib "type" > HMI_LOCAL
}
}
}
}
}
}
}
}
const "_parsed_widgets" apply "$hmi_elements", mode="parselabel";
const "parsed_widgets","exsl:node-set($_parsed_widgets)";
def "func:widget" {
param "id";
result "$parsed_widgets/widget[@id = $id]";
}
def "func:is_descendant_path" {
param "descend";
param "ancest";
// TODO : use HMI tree to answer more accurately
result "string-length($ancest) > 0 and starts-with($descend,$ancest)";
}
def "func:same_class_paths" {
param "a";
param "b";
const "class_a", "$indexed_hmitree/*[@hmipath = $a]/@class";
const "class_b", "$indexed_hmitree/*[@hmipath = $b]/@class";
result "$class_a and $class_b and $class_a = $class_b";
}
// Debug data
template "*", mode="testtree"{
param "indent", "''";
> «$indent» «local-name()»
foreach "@*" > «local-name()»="«.»"
> \n
apply "*", mode="testtree" {
with "indent" value "concat($indent,'>')"
};
}
emit "debug:hmi-tree" {
| Raw HMI tree
apply "$hmitree", mode="testtree";
|
| Indexed HMI tree
apply "$indexed_hmitree", mode="testtree";
|
| Parsed Widgets
copy "_parsed_widgets";
apply "$parsed_widgets", mode="testtree";
}