1

// widget_assign.ysl2

     2

     3

widget_desc("Assign") {

     4

    longdesc

     5

    ||

     6

     7

    Arguments are either:

     8

     9

    - name=value: setting variable with literal value.

    10

    - name=other_name: copy variable content into another

    11

    12

    "active"+"inactive" labeled elements can be provided to show feedback when pressed

    13

    14

    Exemples:

    15

    16

    HMI:Assign:notify=1@notify=/PLCVAR

    17

    HMI:Assign:ack=2:notify=1@ack=.local_var@notify=/PLCVAR

    18

    19

    ||

    20

    21

    shortdesc > Assign variables on click

    22

    23

}

    24

    25

widget_class("Assign") {

    26

||

    27

        frequency = 2;

    28

    29

        onmouseup(evt) {

    30

            svg_root.removeEventListener("pointerup", this.bound_onmouseup, true);

    31

            if(this.enable_state) {

    32

                this.activity_state = false

    33

                this.request_animate();

    34

                this.assign();

    35

            }

    36

        }

    37

    38

        onmousedown(){

    39

            if(this.enable_state) {

    40

                svg_root.addEventListener("pointerup", this.bound_onmouseup, true);

    41

                this.activity_state = true;

    42

                this.request_animate();

    43

            }

    44

        }

    45

    46

||

    47

}

    48

    49

widget_defs("Assign") {

    50

    optional_activable();

    51

    52

    |     init: function() {

    53

    |         this.bound_onmouseup = this.onmouseup.bind(this);

    54

    |         this.element.addEventListener("pointerdown", this.onmousedown.bind(this));

    55

    |     },

    56

    57

    |     assignments: {},

    58

    |     dispatch: function(value, oldval, varnum) {

    59

    const "widget", ".";

    60

    foreach "path" {

    61

        const "varid","generate-id()";

    62

        const "varnum","position()-1";

    63

        if "@assign" foreach "$widget/path[@assign]" if "$varid = generate-id()" {

    64

    |         if(varnum == «$varnum») this.assignments["«@assign»"] = value;

    65

        }

    66

    }

    67

    |     },

    68

    |     assign: function() {

    69

    const "paths","path";

    70

    foreach "arg[contains(@value,'=')]"{

    71

        const "name","substring-before(@value,'=')";

    72

        const "value","substring-after(@value,'=')";

    73

        const "index" foreach "$paths" if "@assign = $name" value "position()-1";

    74

        const "isVarName", "regexp:test($value,'^[a-zA-Z_][a-zA-Z0-9_]*$')";

    75

        choose {

    76

            when "$isVarName"{

    77

    |         const «$value» = this.assignments["«$value»"];

    78

    |         if(«$value» != undefined)

    79

    |             this.apply_hmi_value(«$index», «$value»);

    80

            }

    81

            otherwise {

    82

    |         this.apply_hmi_value(«$index», «$value»);

    83

            }

    84

        }

    85

    }

    86

    |     },

    87

}

    88