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<?xml version="1.0"?>
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<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:exslt="http://exslt.org/common" exclude-result-prefixes="exslt">
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<!--Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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All rights reserved.
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This component and the accompanying materials are made available
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under the terms of the License "Eclipse Public License v1.0"
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which accompanies this distribution, and is available
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at the URL "http://www.eclipse.org/legal/epl-v10.html".
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Initial Contributors:
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Nokia Corporation - initial contribution.
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Contributors:
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Description:
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XSLT module which contains the logic to process the filter attribute in the system definition
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-->
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<xsl:output method="xml" indent="yes"/>
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<!-- filters can only return hide or show -->
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<!-- filter-only = item's @filter can only have items from the list
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anything with no filters passes
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-->
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<xsl:template match="filter-only" mode="filter"><xsl:param name="item"/>
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<xsl:if test="$item[@filter]">
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<xsl:variable name="this" select="."/>
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<xsl:variable name="my-filters">
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<xsl:call-template name="filter-list">
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<xsl:with-param name="f" select="$item/parent::component/@filter"/>
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</xsl:call-template>
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<xsl:call-template name="filter-list">
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<xsl:with-param name="f" select="$item/@filter"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="match">
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<xsl:for-each select="exslt:node-set($my-filters)/*">
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<xsl:if test="not($this/*[name()=name(current()) and @v=current()/@v])">x</xsl:if>
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</xsl:for-each>
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</xsl:variable>
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<xsl:if test="$match!=''">hide</xsl:if>
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</xsl:if>
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</xsl:template>
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<!-- filter-has = item's @filter must have all filters in the list. ie it can have any other filters, but these must all be present
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-->
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<xsl:template match="filter-has" mode="filter"><xsl:param name="item"/>
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<xsl:if test="$item[self::component and not(unit/@filter)] or $item[self::unit and ../unit/@filter]">
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<xsl:variable name="my-filters">
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<xsl:call-template name="filter-list">
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<xsl:with-param name="f" select="$item/parent::component/@filter"/>
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</xsl:call-template>
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<xsl:call-template name="filter-list">
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<xsl:with-param name="f" select="$item/@filter"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="match">
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<xsl:for-each select="*">
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<!-- if(f in this) {return true} else if(!f in this) {return false} else {return !(f is positive)} -->
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<xsl:choose>
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<xsl:when test="exslt:node-set($my-filters)/*[name()=name(current()) and @v=current()/@v]"/> <!-- filter in item -->
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<xsl:when test="exslt:node-set($my-filters)/*[name()!=name(current()) and @v=current()/@v]">x</xsl:when> <!-- !filter in item -->
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<xsl:when test="self::filter">x</xsl:when> <!-- !(filter is positive) -->
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</xsl:choose>
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</xsl:for-each>
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</xsl:variable>
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<xsl:if test="$match!=''">hide</xsl:if>
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</xsl:if>
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</xsl:template>
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<xsl:template match="filter-with" mode="filter"><xsl:param name="item"/>
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<xsl:if test="$item[(self::component or self::unit) and not(unit/@filter or self::unit[not(../unit[@filter])])]">
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<xsl:variable name="my-filters">
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<xsl:call-template name="filter-list">
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<xsl:with-param name="f" select="$item/parent::component/@filter"/>
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</xsl:call-template>
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<xsl:call-template name="filter-list">
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<xsl:with-param name="f" select="$item/@filter"/>
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</xsl:call-template>
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</xsl:variable>
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<xsl:variable name="match">
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<xsl:for-each select="*">
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<xsl:if test="exslt:node-set($my-filters)/*[name()!=name(current()) and @v=current()/@v]">x</xsl:if> <!-- !filter in item -->
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</xsl:for-each>
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</xsl:variable>
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<xsl:if test="$match!=''">hide</xsl:if>
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</xsl:if>
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</xsl:template>
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<xsl:template name="filter-item"> <xsl:param name="f"/>
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<!-- create an element for a given filter. If the filter's empty make nothing -->
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<xsl:choose>
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<xsl:when test="$f=''"/>
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<xsl:when test="starts-with($f,'!')">
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<not v="{substring($f,2)}"/>
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</xsl:when>
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<xsl:otherwise>
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<filter v="{$f}"/>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:template>
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<xsl:template name="filter-list"><xsl:param name="f"/>
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<!-- turn a filter list into a set of elements (<filter> or <not>) with the attribute "v" containing the "absolute value" of the filter
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filter="A,B,!C" becomes <filter v="A"/><filter v="B"/><not v="C"/>
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-->
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<xsl:choose>
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<xsl:when test="contains($f,',')">
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<xsl:call-template name="filter-item"><xsl:with-param name="f" select="normalize-space(substring-before($f,','))"/></xsl:call-template>
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<xsl:call-template name="filter-list">
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<xsl:with-param name="f" select="substring-after($f,',')"/>
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</xsl:call-template>
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</xsl:when>
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<xsl:otherwise>
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<xsl:call-template name="filter-item"><xsl:with-param name="f" select="normalize-space($f)"/></xsl:call-template>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:template>
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</xsl:stylesheet> |