svghmi/analyse_widget.xslt
changeset 3302 c89fc366bebd
parent 3264 51645afeded9
child 3323 864a6e5984cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/svghmi/analyse_widget.xslt	Thu Sep 02 21:36:29 2021 +0200
@@ -0,0 +1,678 @@
+<?xml version="1.0"?>
+<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:svg="http://www.w3.org/2000/svg" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" version="1.0" extension-element-prefixes="ns func exsl regexp str dyn" exclude-result-prefixes="ns func exsl regexp str dyn svg inkscape">
+  <xsl:output method="xml"/>
+  <xsl:variable name="indexed_hmitree" select="/.."/>
+  <xsl:variable name="pathregex" select="'^([^\[,]+)(\[[^\]]+\])?([\d,]*)$'"/>
+  <xsl:template mode="parselabel" match="*">
+    <xsl:variable name="label" select="@inkscape:label"/>
+    <xsl:variable name="id" select="@id"/>
+    <xsl:variable name="description" select="substring-after($label,'HMI:')"/>
+    <xsl:variable name="_args" select="substring-before($description,'@')"/>
+    <xsl:variable name="args">
+      <xsl:choose>
+        <xsl:when test="$_args">
+          <xsl:value-of select="$_args"/>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:value-of select="$description"/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:variable>
+    <xsl:variable name="_type" select="substring-before($args,':')"/>
+    <xsl:variable name="type">
+      <xsl:choose>
+        <xsl:when test="$_type">
+          <xsl:value-of select="$_type"/>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:value-of select="$args"/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:variable>
+    <xsl:if test="$type">
+      <widget>
+        <xsl:attribute name="id">
+          <xsl:value-of select="$id"/>
+        </xsl:attribute>
+        <xsl:attribute name="type">
+          <xsl:value-of select="$type"/>
+        </xsl:attribute>
+        <xsl:for-each select="str:split(substring-after($args, ':'), ':')">
+          <arg>
+            <xsl:attribute name="value">
+              <xsl:value-of select="."/>
+            </xsl:attribute>
+          </arg>
+        </xsl:for-each>
+        <xsl:variable name="paths" select="substring-after($description,'@')"/>
+        <xsl:for-each select="str:split($paths, '@')">
+          <xsl:if test="string-length(.) &gt; 0">
+            <path>
+              <xsl:variable name="path_match" select="regexp:match(.,$pathregex)"/>
+              <xsl:variable name="pathminmax" select="str:split($path_match[4],',')"/>
+              <xsl:variable name="path" select="$path_match[2]"/>
+              <xsl:variable name="path_accepts" select="$path_match[3]"/>
+              <xsl:variable name="pathminmaxcount" select="count($pathminmax)"/>
+              <xsl:attribute name="value">
+                <xsl:value-of select="$path"/>
+              </xsl:attribute>
+              <xsl:if test="string-length($path_accepts)">
+                <xsl:attribute name="accepts">
+                  <xsl:value-of select="$path_accepts"/>
+                </xsl:attribute>
+              </xsl:if>
+              <xsl:choose>
+                <xsl:when test="$pathminmaxcount = 2">
+                  <xsl:attribute name="min">
+                    <xsl:value-of select="$pathminmax[1]"/>
+                  </xsl:attribute>
+                  <xsl:attribute name="max">
+                    <xsl:value-of select="$pathminmax[2]"/>
+                  </xsl:attribute>
+                </xsl:when>
+                <xsl:when test="$pathminmaxcount = 1 or $pathminmaxcount &gt; 2">
+                  <xsl:message terminate="yes">
+                    <xsl:text>Widget id:</xsl:text>
+                    <xsl:value-of select="$id"/>
+                    <xsl:text> label:</xsl:text>
+                    <xsl:value-of select="$label"/>
+                    <xsl:text> has wrong syntax of path section </xsl:text>
+                    <xsl:value-of select="$pathminmax"/>
+                  </xsl:message>
+                </xsl:when>
+              </xsl:choose>
+              <xsl:if test="$indexed_hmitree">
+                <xsl:choose>
+                  <xsl:when test="regexp:test($path,'^\.[a-zA-Z0-9_]+$')">
+                    <xsl:attribute name="type">
+                      <xsl:text>PAGE_LOCAL</xsl:text>
+                    </xsl:attribute>
+                  </xsl:when>
+                  <xsl:when test="regexp:test($path,'^[a-zA-Z0-9_]+$')">
+                    <xsl:attribute name="type">
+                      <xsl:text>HMI_LOCAL</xsl:text>
+                    </xsl:attribute>
+                  </xsl:when>
+                  <xsl:otherwise>
+                    <xsl:variable name="item" select="$indexed_hmitree/*[@hmipath = $path]"/>
+                    <xsl:variable name="pathtype" select="local-name($item)"/>
+                    <xsl:if test="$pathminmaxcount = 3 and not($pathtype = 'HMI_INT' or $pathtype = 'HMI_REAL')">
+                      <xsl:message terminate="yes">
+                        <xsl:text>Widget id:</xsl:text>
+                        <xsl:value-of select="$id"/>
+                        <xsl:text> label:</xsl:text>
+                        <xsl:value-of select="$label"/>
+                        <xsl:text> path section </xsl:text>
+                        <xsl:value-of select="$pathminmax"/>
+                        <xsl:text> use min and max on non mumeric value</xsl:text>
+                      </xsl:message>
+                    </xsl:if>
+                    <xsl:if test="count($item) = 1">
+                      <xsl:attribute name="index">
+                        <xsl:value-of select="$item/@index"/>
+                      </xsl:attribute>
+                      <xsl:attribute name="type">
+                        <xsl:value-of select="$pathtype"/>
+                      </xsl:attribute>
+                    </xsl:if>
+                  </xsl:otherwise>
+                </xsl:choose>
+              </xsl:if>
+            </path>
+          </xsl:if>
+        </xsl:for-each>
+        <xsl:if test="svg:desc">
+          <desc>
+            <xsl:value-of select="svg:desc/text()"/>
+          </desc>
+        </xsl:if>
+      </widget>
+    </xsl:if>
+  </xsl:template>
+  <xsl:template mode="genlabel" match="arg">
+    <xsl:text>:</xsl:text>
+    <xsl:value-of select="@value"/>
+  </xsl:template>
+  <xsl:template mode="genlabel" match="path">
+    <xsl:text>@</xsl:text>
+    <xsl:value-of select="@value"/>
+    <xsl:if test="string-length(@min)&gt;0 or string-length(@max)&gt;0">
+      <xsl:text>,</xsl:text>
+      <xsl:value-of select="@min"/>
+      <xsl:text>,</xsl:text>
+      <xsl:value-of select="@max"/>
+    </xsl:if>
+  </xsl:template>
+  <xsl:template mode="genlabel" match="widget">
+    <xsl:text>HMI:</xsl:text>
+    <xsl:value-of select="@type"/>
+    <xsl:apply-templates mode="genlabel" select="arg"/>
+    <xsl:apply-templates mode="genlabel" select="path"/>
+  </xsl:template>
+  <xsl:variable name="hmi_elements" select="//svg:*[starts-with(@inkscape:label, 'HMI:')]"/>
+  <xsl:template match="widget[@type='AnimateRotation']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>AnimateRotation - DEPRECATED, do not use.
+</xsl:text>
+      <xsl:text>Doesn't follow WYSIWYG principle, and forces user to add animateTransform tag in SVG (using inkscape XML editor for exemple)
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>AnimateRotation - DEPRECATED</xsl:text>
+    </shortdesc>
+    <path name="speed" accepts="HMI_INT,HMI_REAL">
+      <xsl:text>speed</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='Back']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Back widget brings focus back to previous page in history when clicked.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Jump to previous page</xsl:text>
+    </shortdesc>
+  </xsl:template>
+  <xsl:template match="widget[@type='Button']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Button widget takes one boolean variable path, and reflect current true
+</xsl:text>
+      <xsl:text>or false value by showing "active" or "inactive" labeled element
+</xsl:text>
+      <xsl:text>respectively. Pressing and releasing button changes variable to true and
+</xsl:text>
+      <xsl:text>false respectively. Potential inconsistency caused by quick consecutive
+</xsl:text>
+      <xsl:text>presses on the button is mitigated by using a state machine that wait for
+</xsl:text>
+      <xsl:text>previous state change to be reflected on variable before applying next one.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Push button reflecting consistently given boolean variable</xsl:text>
+    </shortdesc>
+    <path name="value" accepts="HMI_BOOL">
+      <xsl:text>Boolean variable</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='CircularBar']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>CircularBar widget changes the end angle of a "path" labeled arc according
+</xsl:text>
+      <xsl:text>to value of the single accepted variable.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>If "min" a "max" labeled texts are provided, then they are used as
+</xsl:text>
+      <xsl:text>respective minimum and maximum value. Otherwise, value is expected to be
+</xsl:text>
+      <xsl:text>in between 0 and 100.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>If "value" labeled text is found, then its content is replaced by value.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Change end angle of Inkscape's arc</xsl:text>
+    </shortdesc>
+    <path name="value" accepts="HMI_INT,HMI_REAL">
+      <xsl:text>Value to display</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='CircularSlider']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>CircularSlider - DEPRECATED, to be replaced by PathSlider
+</xsl:text>
+      <xsl:text>This widget moves "handle" labeled group along "range" labeled
+</xsl:text>
+      <xsl:text>arc, according to value of the single accepted variable.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>If "min" a "max" labeled texts are provided, or if first and second
+</xsl:text>
+      <xsl:text>argument are given, then they are used as respective minimum and maximum
+</xsl:text>
+      <xsl:text>value. Otherwise, value is expected to be in between 0 and 100.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>If "value" labeled text is found, then its content is replaced by value.
+</xsl:text>
+      <xsl:text>During drag, "setpoint" labeled group is moved to position defined by user
+</xsl:text>
+      <xsl:text>while "handle" reflects current value from variable.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>CircularSlider - DEPRECATED</xsl:text>
+    </shortdesc>
+    <arg name="min" count="optional" accepts="int,real">
+      <xsl:text>minimum value</xsl:text>
+    </arg>
+    <arg name="min" count="optional" accepts="int,real">
+      <xsl:text>maximum value</xsl:text>
+    </arg>
+    <path name="value" accepts="HMI_INT,HMI_REAL">
+      <xsl:text>Value to display</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='CustomHtml']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>CustomHtml widget allows insertion of HTML code in a svg:foreignObject.
+</xsl:text>
+      <xsl:text>Widget content is replaced by foreignObject. HTML code is obtained from
+</xsl:text>
+      <xsl:text>"code" labeled text content. HTML insert position and size is given with
+</xsl:text>
+      <xsl:text>"container" labeled element.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Custom HTML insert</xsl:text>
+    </shortdesc>
+  </xsl:template>
+  <xsl:template match="widget[@type='Display']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>If Display widget is a svg:text element, then text content is replaced by
+</xsl:text>
+      <xsl:text>value of given variables, space separated.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>Otherwise, if Display widget is a group containing a svg:text element
+</xsl:text>
+      <xsl:text>labelled "format", then text content is replaced by printf-like formated
+</xsl:text>
+      <xsl:text>string. In other words, if "format" labeled text is "%d %s %f", then 3
+</xsl:text>
+      <xsl:text>variables paths are expected : HMI_IN, HMI_STRING and HMI_REAL.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>In case Display widget is a svg::text element, it is also possible to give
+</xsl:text>
+      <xsl:text>format string as first argument.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Printf-like formated text display </xsl:text>
+    </shortdesc>
+    <arg name="format" count="optional" accepts="string">
+      <xsl:text>printf-like format string when not given as svg:text</xsl:text>
+    </arg>
+    <path name="fields" count="many" accepts="HMI_INT,HMI_REAL,HMI_STRING,HMI_BOOL">
+      <xsl:text>variables to be displayed</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='DropDown']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>DropDown widget let user select an entry in a list of texts, given as
+</xsl:text>
+      <xsl:text>arguments. Single variable path is index of selection.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>It needs "text" (svg:text), "box" (svg:rect), "button" (svg:*),
+</xsl:text>
+      <xsl:text>and "highlight" (svg:rect) labeled elements.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>When user clicks on "button", "text" is duplicated to display enties in the
+</xsl:text>
+      <xsl:text>limit of available space in page, and "box" is extended to contain all
+</xsl:text>
+      <xsl:text>texts. "highlight" is moved over pre-selected entry.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>When only one argument is given, and argment contains "#langs" then list of
+</xsl:text>
+      <xsl:text>texts is automatically set to the list of human-readable languages supported
+</xsl:text>
+      <xsl:text>by this HMI. 
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Let user select text entry in a drop-down menu</xsl:text>
+    </shortdesc>
+    <arg name="entries" count="many" accepts="string">
+      <xsl:text>drop-down menu entries</xsl:text>
+    </arg>
+    <path name="selection" accepts="HMI_INT">
+      <xsl:text>selection index</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='ForEach']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>ForEach widget is used to span a small set of widget over a larger set of
+</xsl:text>
+      <xsl:text>repeated HMI_NODEs. 
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>Idea is somewhat similar to relative page, but it all happens inside the
+</xsl:text>
+      <xsl:text>ForEach widget, no page involved.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>Together with relative Jump widgets it can be used to build a menu to reach
+</xsl:text>
+      <xsl:text>relative pages covering many identical HMI_NODES siblings.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>ForEach widget takes a HMI_CLASS name as argument and a HMI_NODE path as
+</xsl:text>
+      <xsl:text>variable.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>Direct sub-elements can be either groups of widget to be spanned, labeled
+</xsl:text>
+      <xsl:text>"ClassName:offset", or buttons to control the spanning, labeled
+</xsl:text>
+      <xsl:text>"ClassName:+/-number".
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>span widgets over a set of repeated HMI_NODEs</xsl:text>
+    </shortdesc>
+    <arg name="class_name" accepts="string">
+      <xsl:text>HMI_CLASS name</xsl:text>
+    </arg>
+    <path name="root" accepts="HMI_NODE">
+      <xsl:text> where to find HMI_NODEs whose HMI_CLASS is class_name</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='Input']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Input widget takes one variable path, and displays current value in
+</xsl:text>
+      <xsl:text>optional "value" labeled sub-element. 
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>Click on optional "edit" labeled element opens keypad to edit value.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>Operation on current value is performed when click on sub-elements with
+</xsl:text>
+      <xsl:text>label starting with '=', '+' or '-' sign. Value after sign is used as
+</xsl:text>
+      <xsl:text>operand.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Input field with predefined operation buttons</xsl:text>
+    </shortdesc>
+    <arg name="format" accepts="string">
+      <xsl:text>optional printf-like format </xsl:text>
+    </arg>
+    <path name="edit" accepts="HMI_INT, HMI_REAL, HMI_STRING">
+      <xsl:text>single variable to edit</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='JsonTable']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Send given variables as POST to http URL argument, spread returned JSON in
+</xsl:text>
+      <xsl:text>SVG sub-elements of "data" labeled element.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>Documentation to be written. see svbghmi exemple.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Http POST variables, spread JSON back</xsl:text>
+    </shortdesc>
+    <arg name="url" accepts="string">
+      <xsl:text> </xsl:text>
+    </arg>
+    <path name="edit" accepts="HMI_INT, HMI_REAL, HMI_STRING">
+      <xsl:text>single variable to edit</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='Jump']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Jump widget brings focus to a different page. Mandatory single argument
+</xsl:text>
+      <xsl:text>gives name of the page.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>Optional single path is used as new reference when jumping to a relative
+</xsl:text>
+      <xsl:text>page, it must point to a HMI_NODE.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>"active"+"inactive" labeled elements can be provided and reflect current
+</xsl:text>
+      <xsl:text>page being shown.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>"disabled" labeled element, if provided, is shown instead of "active" or
+</xsl:text>
+      <xsl:text>"inactive" widget when pointed HMI_NODE is null.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Jump to given page</xsl:text>
+    </shortdesc>
+    <arg name="page" accepts="string">
+      <xsl:text>name of page to jump to</xsl:text>
+    </arg>
+    <path name="reference" count="optional" accepts="HMI_NODE">
+      <xsl:text>reference for relative jump</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='Keypad']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Keypad - to be written
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Keypad </xsl:text>
+    </shortdesc>
+    <arg name="supported_types" accepts="string">
+      <xsl:text>keypad can input those types </xsl:text>
+    </arg>
+  </xsl:template>
+  <xsl:template match="widget[@type='List']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+  </xsl:template>
+  <xsl:template match="widget[@type='Meter']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Meter widget moves the end of "needle" labeled path along "range" labeled
+</xsl:text>
+      <xsl:text>path, according to value of the single accepted variable.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>Needle is reduced to a single segment. If "min" a "max" labeled texts
+</xsl:text>
+      <xsl:text>are provided, or if first and second argument are given, then they are used
+</xsl:text>
+      <xsl:text>as respective minimum and maximum value. Otherwise, value is expected to be
+</xsl:text>
+      <xsl:text>in between 0 and 100.
+</xsl:text>
+      <xsl:text>
+</xsl:text>
+      <xsl:text>If "value" labeled text is found, then its content is replaced by value.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Moves "needle" along "range"</xsl:text>
+    </shortdesc>
+    <arg name="min" count="optional" accepts="int,real">
+      <xsl:text>minimum value</xsl:text>
+    </arg>
+    <arg name="max" count="optional" accepts="int,real">
+      <xsl:text>maximum value</xsl:text>
+    </arg>
+    <path name="value" accepts="HMI_INT,HMI_REAL">
+      <xsl:text>Value to display</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='ScrollBar']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>ScrollBar - documentation to be written
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>ScrollBar</xsl:text>
+    </shortdesc>
+    <path name="value" accepts="HMI_INT">
+      <xsl:text>value</xsl:text>
+    </path>
+    <path name="range" accepts="HMI_INT">
+      <xsl:text>range</xsl:text>
+    </path>
+    <path name="visible" accepts="HMI_INT">
+      <xsl:text>visible</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='Slider']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Slider - DEPRECATED - use ScrollBar or PathSlider instead
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Slider - DEPRECATED - use ScrollBar instead</xsl:text>
+    </shortdesc>
+    <path name="value" accepts="HMI_INT">
+      <xsl:text>value</xsl:text>
+    </path>
+    <path name="range" accepts="HMI_INT">
+      <xsl:text>range</xsl:text>
+    </path>
+    <path name="visible" accepts="HMI_INT">
+      <xsl:text>visible</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='Switch']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Switch widget hides all subelements whose label do not match given
+</xsl:text>
+      <xsl:text>variable current value representation. For exemple if given variable type
+</xsl:text>
+      <xsl:text>is HMI_INT and value is 1, then elements with label '1' will be displayed.
+</xsl:text>
+      <xsl:text>Label can have comments, so '1#some comment' would also match. If matching
+</xsl:text>
+      <xsl:text>variable of type HMI_STRING, then double quotes must be used. For exemple,
+</xsl:text>
+      <xsl:text>'"hello"' or '"hello"#another comment' match HMI_STRING 'hello'.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Show elements whose label match value.</xsl:text>
+    </shortdesc>
+    <path name="value" accepts="HMI_INT,HMI_STRING">
+      <xsl:text>value to compare to labels</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template match="widget[@type='ToggleButton']" mode="widget_desc">
+    <type>
+      <xsl:value-of select="@type"/>
+    </type>
+    <longdesc>
+      <xsl:text>Button widget takes one boolean variable path, and reflect current true
+</xsl:text>
+      <xsl:text>or false value by showing "active" or "inactive" labeled element
+</xsl:text>
+      <xsl:text>respectively. Clicking or touching button toggles variable.
+</xsl:text>
+    </longdesc>
+    <shortdesc>
+      <xsl:text>Toggle button reflecting given boolean variable</xsl:text>
+    </shortdesc>
+    <path name="value" accepts="HMI_BOOL">
+      <xsl:text>Boolean variable</xsl:text>
+    </path>
+  </xsl:template>
+  <xsl:template mode="document" match="@* | node()">
+    <xsl:copy>
+      <xsl:apply-templates mode="document" select="@* | node()"/>
+    </xsl:copy>
+  </xsl:template>
+  <xsl:template mode="document" match="widget">
+    <xsl:copy>
+      <xsl:apply-templates mode="document" select="@* | node()"/>
+      <defs>
+        <xsl:apply-templates mode="widget_desc" select="."/>
+      </defs>
+    </xsl:copy>
+  </xsl:template>
+  <xsl:template match="/">
+    <xsl:variable name="widgets">
+      <xsl:apply-templates mode="parselabel" select="$hmi_elements"/>
+    </xsl:variable>
+    <xsl:variable name="widget_ns" select="exsl:node-set($widgets)"/>
+    <widgets>
+      <xsl:apply-templates mode="document" select="$widget_ns"/>
+    </widgets>
+  </xsl:template>
+</xsl:stylesheet>