Subject: RE: [xsl] Different Colors for Alternating Rows From: "Kienle, Steven C [IT/0200]" <steven.c.kienle@xxxxxxxxxxxxx> Date: Tue, 24 Jun 2003 13:02:51 -0500 |
The following template does what you want it to do, I think. It isn't pretty and basically takes control of the recursion of the sibling tr nodes. That is, it using the apply-templates but only one node at a time. Because of that, I have no idea what the actual performance would be. I also removed the <xsl:for-each select="td[1]"> because those really only iterate once and therefore the td[1] can be used in the select XPath for the apply-templates element. <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output method="html" indent="yes"/> <xsl:template match="node()|@*"> <!--identity transform--> <xsl:copy> <xsl:apply-templates select="node()|@*"/> </xsl:copy> </xsl:template> <xsl:template match="table"> <xsl:copy> <xsl:choose> <xsl:when test="tr[1][td[not(a) and not(@class)]]"> <xsl:apply-templates select="tr[1]" mode="color-change"> <xsl:with-param name="odd-row" select="true()"/> </xsl:apply-templates> </xsl:when> <xsl:otherwise> <xsl:apply-templates select="tr[1]" mode="copy-only"> <xsl:with-param name="odd-row" select="true()"/> </xsl:apply-templates> </xsl:otherwise> </xsl:choose> </xsl:copy> </xsl:template> <xsl:template match="tr" mode="copy-only"> <xsl:param name="odd-row"/> <xsl:copy> <xsl:apply-templates select="node()|@*"/> </xsl:copy> <xsl:choose> <xsl:when test="following-sibling::tr[1][td[not(a) and not(@class)]]"> <xsl:apply-templates select="following-sibling::tr[1]" mode="color-change"> <xsl:with-param name="odd-row" select="$odd-row"/> </xsl:apply-templates> </xsl:when> <xsl:otherwise> <xsl:apply-templates select="following-sibling::tr[1]" mode="copy-only"> <xsl:with-param name="odd-row" select="$odd-row"/> </xsl:apply-templates> </xsl:otherwise> </xsl:choose> </xsl:template> <xsl:template match="tr" mode="color-change"> <xsl:param name="odd-row"/> <xsl:copy> <xsl:choose> <xsl:when test="$odd-row"> <td class="oddMedium" width="35%"> <xsl:apply-templates select="td[1]/node()|@*"/> </td> <td class="oddMedium" width="65%"> <xsl:apply-templates select="td[2]/node()|@*"/> </td> </xsl:when> <xsl:otherwise> <td class="evenMedium" width="35%"> <xsl:apply-templates select="td[1]/node()|@*"/> </td> <td class="evenMedium" width="65%"> <xsl:apply-templates select="td[2]/node()|@*"/> </td> </xsl:otherwise> </xsl:choose> </xsl:copy> <xsl:choose> <xsl:when test="following-sibling::tr[1][td[not(a) and not(@class)]]"> <xsl:apply-templates select="following-sibling::tr[1]" mode="color-change"> <xsl:with-param name="odd-row" select="not($odd-row)"/> </xsl:apply-templates> </xsl:when> <xsl:otherwise> <xsl:apply-templates select="following-sibling::tr[1]" mode="copy-only"> <xsl:with-param name="odd-row" select="not($odd-row)"/> </xsl:apply-templates> </xsl:otherwise> </xsl:choose> </xsl:template> </xsl:stylesheet> -----Original Message----- From: Schwartz, Rechell R, ALABS [mailto:rrschwartz@xxxxxxx] Sent: Tuesday, June 24, 2003 8:46 AM To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx Subject: [xsl] Different Colors for Alternating Rows All, I have bee using the following stylesheet to produce different colors for alternating rows whenever a row that has <td> tags without attributes or hyperlinks are encountered. The problem is for large documents the performance degrades significantly. This seems to be because in the algorithm used to calculate which color to use, a check is made to determine how many previous siblings have already been processed, so the number of checks grows exponentially as the number of rows grows. It seems that that the same effect should be possible with greatly improved performance by recursively incrementing a variable whenever a row that is a candidate for a color change has been processed. I was unsure of how to go about doing this. Any code snippets would be greatly appreciated. Following is my stylesheets, sample HTML, and desire output: Thanks, Rechell Schwartz <?xml version="1.0" encoding="iso-8859-1"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output method="html" indent="yes"/> <xsl:template match="node()|@*"> <!--identity transform--> <xsl:copy> <xsl:apply-templates select="node()|@*"/> </xsl:copy> </xsl:template> <xsl:template match="table/tr[td[not(a) and not(@class)]]"> <xsl:copy> <xsl:choose> <xsl:when test="count( preceding-sibling::tr[td[not(a) and not(@class)]] ) mod 2 = 1"> <xsl:for-each select="td[1]"> <td class="evenMedium" width="35%"> <xsl:apply-templates select="node()|@*"/> </td> </xsl:for-each> <xsl:for-each select="td[2]"> <td class="evenMedium" width="65%"> <xsl:apply-templates select="node()|@*"/> </td> </xsl:for-each> </xsl:when> <xsl:otherwise> <xsl:for-each select="td[1]"> <td class="oddMedium" width="35%"> <xsl:apply-templates select="node()|@*"/> </td> </xsl:for-each> <xsl:for-each select="td[2]"> <td class="oddMedium" width="65%"> <xsl:apply-templates select="node()|@*"/> </td> </xsl:for-each> </xsl:otherwise> </xsl:choose> </xsl:copy> </xsl:template> </xsl:stylesheet> The input file is: <table> <tr> <td class="headerStyle" colspan="2"> Title </td> </tr> <tr> <td>Label1</td> <td>Value1</td> </tr> <tr> <td class="separatorStyle colspan="2"> --------------- </td> </tr> <tr> <td>Label2</td> <td>Value2</td> </tr> </table> The desired output: <table> <tr> <td class="headerStyle" colspan="2"> Title </td> </tr> <tr> <td class="oddRowStyle" width="35%">Label1</td> <td class="oddRowStyle" width="65%">Value1</td> </tr> <tr> <td class="separatorStyle colspan="2"> --------------- </td> </tr> <tr> <td class="evenRowStyle" width="35%">Label2</td> <td class="evenRowStyle" width="65%">Value2</td> </tr> </table> XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list This communication is intended solely for the use of the addressee and may contain information that is legally privileged, confidential or exempt from disclosure. 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