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<?xml version="1.0"?>

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<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:exsl="http://exslt.org/common" xmlns:regexp="http://exslt.org/regular-expressions" xmlns:str="http://exslt.org/strings" xmlns:func="http://exslt.org/functions" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" xmlns:ns="beremiz" version="1.0" extension-element-prefixes="ns func exsl regexp str dyn" exclude-result-prefixes="ns func exsl regexp str dyn">

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  <xsl:output method="xml"/>

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  <xsl:variable name="hmi_elements" select="//svg:*[starts-with(@inkscape:label, 'HMI:')]"/>

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  <xsl:variable name="widgetparams" select="ns:GetWidgetParams()"/>

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  <xsl:variable name="indexed_hmitree" select="/.."/>

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  <xsl:variable name="pathregex" select="'^([^\[,]+)(\[[^\]]+\])?([-.\d,]*)$'"/>

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  <xsl:template mode="parselabel" match="*">

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    <xsl:variable name="id" select="@id"/>

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    <xsl:variable name="description" select="substring-after($label,'HMI:')"/>

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    <xsl:variable name="_args" select="substring-before($description,'@')"/>

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    <xsl:variable name="args">

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      <xsl:choose>

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        <xsl:when test="$_args">

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          <xsl:value-of select="$_args"/>

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        </xsl:when>

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        <xsl:otherwise>

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          <xsl:value-of select="$description"/>

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        </xsl:otherwise>

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      </xsl:choose>

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    </xsl:variable>

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    <xsl:variable name="_typefreq" select="substring-before($args,':')"/>

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    <xsl:variable name="typefreq">

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      <xsl:choose>

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        <xsl:when test="$_typefreq">

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          <xsl:value-of select="$_typefreq"/>

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        </xsl:when>

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        <xsl:otherwise>

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          <xsl:value-of select="$args"/>

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        </xsl:otherwise>

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      </xsl:choose>

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    </xsl:variable>

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    <xsl:variable name="freq" select="substring-after($typefreq,'|')"/>

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    <xsl:variable name="_type" select="substring-before($typefreq,'|')"/>

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    <xsl:variable name="type">

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      <xsl:choose>

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        <xsl:when test="$_type">

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          <xsl:value-of select="$_type"/>

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        </xsl:when>

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        <xsl:otherwise>

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          <xsl:value-of select="$typefreq"/>

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        </xsl:otherwise>

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      </xsl:choose>

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    </xsl:variable>

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    <xsl:if test="$type">

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      <widget>

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        <xsl:attribute name="id">

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          <xsl:value-of select="$id"/>

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        </xsl:attribute>

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        <xsl:attribute name="type">

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          <xsl:value-of select="$type"/>

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        </xsl:attribute>

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        <xsl:if test="$freq">

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          <xsl:if test="not(regexp:test($freq,'^[0-9]*(\.[0-9]+)?[smh]?'))">

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            <xsl:message terminate="yes">

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              <xsl:text>Widget id:</xsl:text>

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              <xsl:value-of select="$id"/>

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              <xsl:text> label:</xsl:text>

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              <xsl:value-of select="$label"/>

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              <xsl:text> has wrong syntax of frequency forcing </xsl:text>

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              <xsl:value-of select="$freq"/>

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            </xsl:message>

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          </xsl:if>

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          <xsl:attribute name="freq">

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            <xsl:value-of select="$freq"/>

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          </xsl:attribute>

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        </xsl:if>

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        <xsl:for-each select="str:split(substring-after($args, ':'), ':')">

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          <arg>

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            <xsl:attribute name="value">

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              <xsl:value-of select="."/>

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            </xsl:attribute>

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          </arg>

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        </xsl:for-each>

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        <xsl:variable name="paths" select="substring-after($description,'@')"/>

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        <xsl:for-each select="str:split($paths, '@')">

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          <xsl:if test="string-length(.) &gt; 0">

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            <path>

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              <xsl:variable name="path_match" select="regexp:match(.,$pathregex)"/>

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              <xsl:variable name="pathminmax" select="str:split($path_match[4],',')"/>

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              <xsl:variable name="path" select="$path_match[2]"/>

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              <xsl:variable name="path_accepts" select="$path_match[3]"/>

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              <xsl:variable name="pathminmaxcount" select="count($pathminmax)"/>

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              <xsl:attribute name="value">

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                <xsl:value-of select="$path"/>

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              </xsl:attribute>

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              <xsl:if test="string-length($path_accepts)">

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                <xsl:attribute name="accepts">

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                  <xsl:value-of select="$path_accepts"/>

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                </xsl:attribute>

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              </xsl:if>

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              <xsl:choose>

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                <xsl:when test="$pathminmaxcount = 2">

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                  <xsl:attribute name="min">

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                    <xsl:value-of select="$pathminmax[1]"/>

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                  </xsl:attribute>

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                  <xsl:attribute name="max">

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                    <xsl:value-of select="$pathminmax[2]"/>

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                  </xsl:attribute>

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                </xsl:when>

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                <xsl:when test="$pathminmaxcount = 1 or $pathminmaxcount &gt; 2">

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                  <xsl:message terminate="yes">

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                    <xsl:text>Widget id:</xsl:text>

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                    <xsl:value-of select="$id"/>

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                    <xsl:text> label:</xsl:text>

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                    <xsl:value-of select="$label"/>

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                    <xsl:text> has wrong syntax of path section </xsl:text>

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                    <xsl:value-of select="$pathminmax"/>

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                  </xsl:message>

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                </xsl:when>

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              </xsl:choose>

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              <xsl:if test="$indexed_hmitree">

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                <xsl:choose>

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                  <xsl:when test="regexp:test($path,'^\.[a-zA-Z0-9_]+$')">

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                    <xsl:attribute name="type">

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                      <xsl:text>PAGE_LOCAL</xsl:text>

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                    </xsl:attribute>

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                  </xsl:when>

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                  <xsl:when test="regexp:test($path,'^[a-zA-Z0-9_]+$')">

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                    <xsl:attribute name="type">

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                      <xsl:text>HMI_LOCAL</xsl:text>

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                    </xsl:attribute>

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                  </xsl:when>

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                  <xsl:otherwise>

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                    <xsl:variable name="item" select="$indexed_hmitree/*[@hmipath = $path]"/>

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                    <xsl:variable name="pathtype" select="local-name($item)"/>

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                    <xsl:if test="$pathminmaxcount = 3 and not($pathtype = 'HMI_INT' or $pathtype = 'HMI_REAL')">

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                      <xsl:message terminate="yes">

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                        <xsl:text>Widget id:</xsl:text>

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                        <xsl:value-of select="$id"/>

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                        <xsl:text> label:</xsl:text>

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                        <xsl:value-of select="$label"/>

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                        <xsl:text> path section </xsl:text>

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                        <xsl:value-of select="$pathminmax"/>

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                        <xsl:text> use min and max on non mumeric value</xsl:text>

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                      </xsl:message>

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                    </xsl:if>

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                    <xsl:if test="count($item) = 1">

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                      <xsl:attribute name="index">

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                        <xsl:value-of select="$item/@index"/>

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                      </xsl:attribute>

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                      <xsl:attribute name="type">

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                        <xsl:value-of select="$pathtype"/>

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                      </xsl:attribute>

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                    </xsl:if>

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                  </xsl:otherwise>

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                </xsl:choose>

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              </xsl:if>

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            </path>

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          </xsl:if>

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        </xsl:for-each>

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      </widget>

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    </xsl:if>

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  </xsl:template>

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  <xsl:template mode="genlabel" match="arg">

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    <xsl:text>:</xsl:text>

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    <xsl:value-of select="@value"/>

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  </xsl:template>

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  <xsl:template mode="genlabel" match="path">

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    <xsl:text>@</xsl:text>

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    <xsl:value-of select="@value"/>

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    <xsl:if test="string-length(@min)&gt;0 or string-length(@max)&gt;0">

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      <xsl:text>,</xsl:text>

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      <xsl:value-of select="@min"/>

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      <xsl:text>,</xsl:text>

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      <xsl:value-of select="@max"/>

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    </xsl:if>

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  </xsl:template>

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  <xsl:template mode="genlabel" match="widget">

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    <xsl:text>HMI:</xsl:text>

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    <xsl:value-of select="@type"/>

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    <xsl:apply-templates mode="genlabel" select="arg"/>

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    <xsl:apply-templates mode="genlabel" select="path"/>

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  </xsl:template>

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  <xsl:variable name="_parsed_widgets">

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    <xsl:apply-templates mode="parselabel" select="$hmi_elements"/>

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  </xsl:variable>

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  <xsl:variable name="parsed_widgets" select="exsl:node-set($_parsed_widgets)"/>

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  <xsl:variable name="svg_widget" select="$parsed_widgets/widget[1]"/>

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  <xsl:variable name="svg_widget_type" select="$svg_widget/@type"/>

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  <xsl:variable name="svg_widget_path" select="$svg_widget/@path"/>

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  <xsl:variable name="svg_widget_count" select="count($parsed_widgets/widget)"/>

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  <xsl:template mode="replace_params" match="@* | node()">

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    <xsl:copy>

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      <xsl:apply-templates mode="replace_params" select="@* | node()"/>

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    </xsl:copy>

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  </xsl:template>

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  <xsl:template mode="replace_params" match="arg"/>

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  <xsl:template mode="replace_params" match="path"/>

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  <xsl:template mode="replace_params" match="widget">

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    <xsl:copy>

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      <xsl:apply-templates mode="replace_params" select="@* | node()"/>

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      <xsl:copy-of select="$widgetparams/*"/>

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    </xsl:copy>

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  </xsl:template>

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  <xsl:template xmlns="http://www.w3.org/2000/svg" mode="inline_svg" match="@*">

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    <xsl:copy/>

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  </xsl:template>

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  <xsl:template xmlns="http://www.w3.org/2000/svg" mode="inline_svg" match="@inkscape:label[starts-with(., 'HMI:')]"/>

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  <xsl:template mode="inline_svg" match="node()">

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    <xsl:copy>

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      <xsl:if test="@id = $svg_widget/@id">

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        <xsl:variable name="substituted_widget">

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          <xsl:apply-templates mode="replace_params" select="$svg_widget"/>

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        </xsl:variable>

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        <xsl:variable name="substituted_widget_ns" select="exsl:node-set($substituted_widget)"/>

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        <xsl:variable name="new_label">

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          <xsl:apply-templates mode="genlabel" select="$substituted_widget_ns"/>

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        </xsl:variable>

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        <xsl:attribute name="inkscape:label">

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          <xsl:value-of select="$new_label"/>

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        </xsl:attribute>

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      </xsl:if>

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      <xsl:apply-templates mode="inline_svg" select="@* | node()"/>

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    </xsl:copy>

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  </xsl:template>

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  <xsl:template match="/">

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    <xsl:comment>

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      <xsl:text>Widget dropped in Inkscape from Beremiz</xsl:text>

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    </xsl:comment>

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    <xsl:choose>

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      <xsl:when test="$svg_widget_count &lt; 1">

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        <xsl:message terminate="yes">

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          <xsl:text>No widget detected on selected SVG</xsl:text>

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        </xsl:message>

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      </xsl:when>

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      <xsl:when test="$svg_widget_count &gt; 1">

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        <xsl:message terminate="yes">

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          <xsl:text>Multiple widget DnD not yet supported</xsl:text>

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        </xsl:message>

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      </xsl:when>

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    </xsl:choose>

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    <xsl:apply-templates mode="inline_svg" select="/"/>

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  </xsl:template>

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</xsl:stylesheet>