2

//

     3

// compute what elements are required by pages

     4

// and decide where to cut when removing/attaching 

     5

// pages elements on page switch

     6

     7

const "hmi_pages", "$hmi_elements[func:parselabel(@inkscape:label)/widget/@type = 'Page']";

     8

     9

const "default_page" choose {

    10

    when "count($hmi_pages) > 1" {

    11

        const "Home_page", 

    12

            "$hmi_pages[func:parselabel(@inkscape:label)/widget/arg[1]/@value = 'Home']";

    13

        choose {

    14

            when "$Home_page" > Home

    15

            otherwise {

    16

                error "No Home page defined!";

    17

            }

    18

        }

    19

    }

    20

    when "count($hmi_pages) = 0" {

    21

        error "No page defined!";

    22

    }

    23

    otherwise > «func:parselabel($hmi_pages/@inkscape:label)/widget/arg[1]/@value»

    24

}

    25

    26

// returns all directly or indirectly refered elements

    27

def "func:refered_elements" {

    28

    param "elems";

    29

    const "descend", "$elems/descendant-or-self::svg:*";

    30

    const "clones", "$descend[self::svg:use]";

    31

    const "originals", "//svg:*[concat('#',@id) = $clones/@xlink:href]";

    32

    choose {

    33

        when "$originals"

    34

            result "$descend | func:refered_elements($originals)";

    35

        otherwise

    36

            result "$descend";

    37

    }

    38

}

    39

    40

def "func:all_related_elements" {

    41

    param "page";

    42

    const "page_overlapping_geometry", "func:overlapping_geometry($page)";

    43

    const "page_overlapping_elements", "//svg:*[@id = $page_overlapping_geometry/@Id]";

    44

    const "page_sub_elements", "func:refered_elements($page | $page_overlapping_elements)";

    45

    result "$page_sub_elements";

    46

}

    47

    48

def "func:required_elements" {

    49

    param "pages"; 

    50

    choose{

    51

        when "$pages"{

    52

            result """func:all_related_elements($pages[1])

    53

                      | func:required_elements($pages[position()!=1])""";

    54

        }otherwise{

    55

            result "/..";

    56

        }

    57

    }

    58

}

    59

    60

const "required_elements",

    61

    """//svg:defs/descendant-or-self::svg:*

    62

       | func:required_elements($hmi_pages)/ancestor-or-self::svg:*""";

    63

    64

const "discardable_elements", "//svg:*[not(@id = $required_elements/@id)]";

    65

    66

def "func:sumarized_elements" {

    67

    param "elements";

    68

    const "short_list", "$elements[not(ancestor::*/@id = $elements/@id)]";

    69

    const "filled_groups", """$short_list/parent::svg:*[

    70

        not(descendant::*[

    71

            not(self::svg:g) and

    72

            not(@id = $discardable_elements/@id) and

    73

            not(@id = $short_list/descendant-or-self::*[not(self::svg:g)]/@id)

    74

        ])]""";

    75

    const "groups_to_add", "$filled_groups[not(ancestor::*/@id = $filled_groups/@id)]";

    76

    result "$groups_to_add | $short_list[not(ancestor::svg:g/@id = $filled_groups/@id)]";

    77

}

    78

    79

def "func:detachable_elements" {

    80

    param "pages";

    81

    choose{

    82

        when "$pages"{

    83

            result """func:sumarized_elements(func:all_related_elements($pages[1]))

    84

                      | func:detachable_elements($pages[position()!=1])""";

    85

        }otherwise{

    86

            result "/..";

    87

        }

    88

    }

    89

}

    90

    91

// Avoid nested detachables

    92

const "_detachable_elements", "func:detachable_elements($hmi_pages)";

    93

const "detachable_elements", "$_detachable_elements[not(ancestor::*/@id = $_detachable_elements/@id)]";

    94

    95

def "func:is_descendant_path" {

    96

    param "descend";

    97

    param "ancest";

    98

    result "string-length($ancest) > 0 and starts-with($descend,$ancest)";

    99

}

   100

   102

template "svg:*", mode="page_desc" {

   103

    const "desc", "func:parselabel(@inkscape:label)/widget";

   104

    const "page", ".";

   105

    const "p", "$geometry[@Id = $page/@id]";

   106

   107

    const "page_all_elements", "func:all_related_elements($page)";

   108

   110

   111

    const "page_relative_widgets",

   112

        "$all_page_widgets[func:is_descendant_path(func:parselabel(@inkscape:label)/widget/path/@value, $desc/path/@value)]";

   113

   114

    // Take closest ancestor in detachable_elements

   115

    // since nested detachable elements are filtered out

   116

    const "required_detachables", 

   117

        """func:sumarized_elements($page_all_elements)/

   118

           ancestor-or-self::*[@id = $detachable_elements/@id]""";

   119

   120

    |   "«$desc/arg[1]/@value»": {

   121

    |     widget: hmi_widgets["«@id»"],

   122

    |     bbox: [«$p/@x», «$p/@y», «$p/@w», «$p/@h»],

   123

    if "$desc/path/@value" {

   124

        if "count($desc/path/@index)=0"

   125

            warning > Page id="«$page/@id»" : No match for path "«$desc/path/@value»" in HMI tree

   126

    |     page_index: «$desc/path/@index»,

   127

    }

   128

    |     relative_widgets: [

   129

    foreach "$page_relative_widgets" {

   130

    |         hmi_widgets["«@id»"]`if "position()!=last()" > ,`

   131

    }

   132

    |     ],

   133

    |     absolute_widgets: [

   134

    foreach "$all_page_widgets[not(@id = $page_relative_widgets/@id)]" {

   135

    |         hmi_widgets["«@id»"]`if "position()!=last()" > ,`

   136

    }

   137

    |     ],

   138

    |     required_detachables: {

   139

    foreach "$required_detachables" {

   140

    |         "«@id»": detachable_elements["«@id»"]`if "position()!=last()" > ,`

   141

    }

   142

    |     }

   143

    |   }`if "position()!=last()" > ,`

   144

}

   145

   146

function "debug_detachables" {

   147

    foreach "$detachable_elements"{

   148

        |  «@id»

   149

    }

   150

}

   151

!debug_output_calls.append("debug_detachables")