svghmi/widgets_common.ysl2
author Edouard Tisserant
Tue, 11 Aug 2020 14:37:33 +0200
branchsvghmi
changeset 3022 f6fe42b7ce60
parent 3017 15e2df3e5610
child 3024 0a9f6f29b7dd
permissions -rw-r--r--
SVGHMI: finished initial implementation of PAGE_LOCAL and HMI_LOCAL variables.
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// widgets_common.ysl2
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in xsl decl labels(*ptr, name="defs_by_labels") alias call-template {
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    with "hmi_element", "$hmi_element";
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    with "labels"{text *ptr};
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    content;
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};
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decl optional_labels(*ptr) alias - {
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    /* TODO add some per label xslt variable to check if exist */
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    labels(*ptr){
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        with "mandatory","'no'";
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        content;
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    }
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};
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decl activable_labels(*ptr) alias - {
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    optional_labels(*ptr) {
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        with "subelements","'active inactive'";
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        content;
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    }
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};
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template "svg:*", mode="hmi_widgets" {
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    const "widget", "func:widget(@id)";
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    const "eltid","@id";
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    const "args" foreach "$widget/arg" > "«@value»"`if "position()!=last()" > ,`
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    const "indexes" foreach "$widget/path" {
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        choose {
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            when "not(@index)" {
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                choose {
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                    when "not(@type)" 
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                        error > Widget «$widget/@type» id="«$eltid»" : No match for path "«@value»" in HMI tree
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                    when "@type = 'PAGE_LOCAL'" 
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                        > "«substring(@value, 1)»"`if "position()!=last()" > ,`
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                    when "@type = 'HMI_LOCAL'" 
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                        > hmi_local_index("«@value»")`if "position()!=last()" > ,`
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                }
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            }
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            otherwise {
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                > «@index»`if "position()!=last()" > ,`
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            }
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        }
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    }
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    |   "«@id»": new «$widget/@type»Widget ("«@id»",[«$args»],[«$indexes»],{
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    apply "$widget", mode="widget_defs" with "hmi_element",".";
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    |   })`if "position()!=last()" > ,`
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}
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def "func:unique_types" {
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    param "elts_with_type";
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    choose {
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        when "count($elts_with_type) > 1" {
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            const "prior_results","func:unique_types($elts_with_type[position()!=last()])";
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            choose {
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                when "$elts_with_type[last()][@type = $prior_results/@type]"{
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                    // type already in
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                    result "$prior_results";
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                }
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                otherwise {
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                    result "$prior_results | $elts_with_type[last()]";
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                }
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            }
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        }
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        otherwise {
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            result "$elts_with_type";
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        }
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    }
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}
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emit "preamble:local-variable-indexes" {
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    ||
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    let hmi_locals = {};
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    var last_remote_index = hmitree_types.length - 1;
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    var next_available_index = hmitree_types.length;
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    var cache = hmitree_types.map(_ignored => undefined);
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    function page_local_index(varname, pagename){
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        let pagevars = hmi_locals[pagename];
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        let new_index;
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        if(pagevars == undefined){
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            new_index = next_available_index++;
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            hmi_locals[pagename] = {[varname]:new_index}
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        } else {
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            let result = pagevars[varname];
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            if(result != undefined) {
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                return result;
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            }
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            new_index = next_available_index++;
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            pagevars[varname] = new_index;
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        }
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        cache[new_index] = "";
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        return new_index;
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    }
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    function hmi_local_index(varname){
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        return page_local_index(varname, "HMI_LOCAL");
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    }
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    ||
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}
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   105
emit "preamble:widget-base-class" {
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    ||
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   107
    class Widget {
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        offset = 0;
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        frequency = 10; /* FIXME arbitrary default max freq. Obtain from config ? */
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        unsubscribable = false;
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        constructor(elt_id,args,indexes,members){
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            this.element_id = elt_id;
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            this.element = id(elt_id);
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            this.args = args;
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            this.indexes = indexes;
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            Object.keys(members).forEach(prop => this[prop]=members[prop]);
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   117
        }
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   118
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        unsub(){
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            /* remove subsribers */
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            if(!this.unsubscribable)
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                for(let i = 0; i < this.indexes.length; i++) {
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                    let index = this.indexes[i];
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                    if(this.relativeness[i])
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                        index += this.offset;
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   126
                    subscribers(index).delete(this);
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                }
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            this.offset = 0;
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            this.relativeness = undefined;
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        }
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   131
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        sub(new_offset=0, relativeness, container_id){
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            this.offset = new_offset;
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            this.relativeness = relativeness;
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            this.container_id = container_id ;
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   136
            /* add this's subsribers */
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            if(!this.unsubscribable)
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                for(let i = 0; i < this.indexes.length; i++) {
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                    let index = this.get_variable_index(i);
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                    subscribers(index).add(this);
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   141
                }
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   142
            need_cache_apply.push(this); 
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   143
        }
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   145
        apply_cache() {
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   146
            if(!this.unsubscribable) for(let i = 0; i < this.indexes.length; i++) {
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   147
                /* dispatch current cache in newly opened page widgets */
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   148
                let realindex = this.get_variable_index(i);
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   149
                let cached_val = cache[realindex];
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   150
                if(cached_val != undefined)
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                    this.new_hmi_value(realindex, cached_val, cached_val);
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   152
            }
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   153
        }
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   154
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        get_variable_index(varnum) {
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            let index = this.indexes[varnum];
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   157
            if(typeof(index) == "string"){
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   158
                index = page_local_index(index, this.container_id);
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   159
            } else {
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   160
                if(this.relativeness[varnum]){
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   161
                    index += this.offset;
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   162
                }
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   163
            }
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   164
            return index;
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   165
        }
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   166
        change_hmi_value(index,opstr) {
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   167
            return change_hmi_value(this.get_variable_index(index), opstr);
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   168
        }
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   169
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   170
        apply_hmi_value(index, new_val) {
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   171
            return apply_hmi_value(this.get_variable_index(0), new_val);
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   172
        }
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   173
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   174
        new_hmi_value(index, value, oldval) {
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   175
            try {
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   176
                // TODO avoid searching, store index at sub()
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   177
                for(let i = 0; i < this.indexes.length; i++) {
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   178
                    let refindex = this.get_variable_index(i);
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   179
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   180
                    if(index == refindex) {
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   181
                        let d = this.dispatch;
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   182
                        if(typeof(d) == "function"){
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   183
                            d.call(this, value, oldval, i);
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   184
                        }
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   185
                        else if(typeof(d) == "object"){
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   186
                            d[i].call(this, value, oldval);
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   187
                        }
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   188
                        /* else dispatch_0, ..., dispatch_n ? */
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   189
                        /*else {
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   190
                            throw new Error("Dunno how to dispatch to widget at index = " + index);
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   191
                        }*/
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   192
                        break;
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   193
                    }
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   194
                }
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   195
            } catch(err) {
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   196
                console.log(err);
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            }
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        }
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    }
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    ||
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}
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emit "declarations:hmi-classes" {
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    const "used_widget_types", "func:unique_types($parsed_widgets/widget)";
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    apply "$used_widget_types", mode="widget_class";
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}
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template "widget", mode="widget_class"
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||
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class «@type»Widget extends Widget{
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    /* empty class, as «@type» widget didn't provide any */
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}
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||
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const "excluded_types", "str:split('Page Lang')";
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const "excluded_ids","$parsed_widgets/widget[not(@type = $excluded_types)]/@id";
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emit "declarations:hmi-elements" {
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    | var hmi_widgets = {
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    apply  "$hmi_elements[@id = $excluded_ids]", mode="hmi_widgets";
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    | }
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   222
}
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function "defs_by_labels" {
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    param "labels","''";
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    param "mandatory","'yes'";
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    param "subelements","/..";
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    param "hmi_element";
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    const "widget_type","@type";
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    foreach "str:split($labels)" {
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        const "name",".";
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        const "elt","$result_svg_ns//*[@id = $hmi_element/@id]//*[@inkscape:label=$name][1]";
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        choose {
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            when "not($elt/@id)" {
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                if "$mandatory='yes'" {
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                    error > «$widget_type» widget must have a «$name» element
2834
6ac6a9dff594 SVGHMI: be a bit more tolerant with missing HMI paths or missing elements in widgets : continue build (with warning) and fail silently at runtime.
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   237
                }
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   238
                // otherwise produce nothing
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   239
            }
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   240
            otherwise {
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   241
                |     «$name»_elt: id("«$elt/@id»"),
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   242
                if "$subelements" {
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   243
                |     «$name»_sub: {
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   244
                    foreach "str:split($subelements)" {
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   245
                        const "subname",".";
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   246
                        const "subelt","$elt/*[@inkscape:label=$subname][1]";
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   247
                        choose {
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   248
                            when "not($subelt/@id)" {
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   249
                                if "$mandatory='yes'" {
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   250
                                    error > «$widget_type» widget must have a «$name»/«$subname» element
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   251
                                }
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                |         /* missing «$name»/«$subname» element */
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   253
                            }
3ee337c8c769 SVGHMI: finished shift and capslock support n keypad widget. Added a helper in widgets_common to collect subelements likle active/inactive/disabled...
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   254
                            otherwise {
3ee337c8c769 SVGHMI: finished shift and capslock support n keypad widget. Added a helper in widgets_common to collect subelements likle active/inactive/disabled...
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   255
                |         "«$subname»": id("«$subelt/@id»")`if "position()!=last()" > ,`
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   256
                            }
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   257
                        }
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   258
                    }
3ee337c8c769 SVGHMI: finished shift and capslock support n keypad widget. Added a helper in widgets_common to collect subelements likle active/inactive/disabled...
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   259
                |     },
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   260
                }
2836
ce6cecdb7320 SVGHMI : still behave, even if important things are missing in SVG widget definitions (ex: needle missing for Meter widget)
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diff changeset
   261
            }
2808
dc78ffa5253d SVGHMI: SVG viewport now defined so that HMI take scales and fit to the view. Implemented page switch through viewport change, no hiding of widget for now.
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diff changeset
   262
        }
dc78ffa5253d SVGHMI: SVG viewport now defined so that HMI take scales and fit to the view. Implemented page switch through viewport change, no hiding of widget for now.
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diff changeset
   263
    }
2881
3bb49f93d48c SVGHMI: added widget_common.ysl2
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diff changeset
   264
}
2808
dc78ffa5253d SVGHMI: SVG viewport now defined so that HMI take scales and fit to the view. Implemented page switch through viewport change, no hiding of widget for now.
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diff changeset
   265
2883
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   266
def "func:escape_quotes" {
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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   267
    param "txt";
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   268
    // have to use a python string to enter escaped quote
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   269
    const "frst", !"substring-before($txt,'\"')"!;
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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   270
    const "frstln", "string-length($frst)";
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diff changeset
   271
    choose {
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   272
        when "$frstln > 0 and string-length($txt) > $frstln" {
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   273
            result !"concat($frst,'\\\"',func:escape_quotes(substring-after($txt,'\"')))"!;
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   274
        }
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   275
        otherwise {
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   276
            result "$txt";
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   277
        }
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   278
    }
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   279
}
8e3d130399b0 SVGHMI: created widget_*.ysl2. Renamed widget_common in widgets_common, so that it doesn't match globing.
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diff changeset
   280