Subject: RE: [xsl] Different Colors for Alternating Rows From: Jeff Beadle <Jbeadle@xxxxxxxx> Date: Tue, 24 Jun 2003 10:01:03 -0400 |
Hello Rechell, I'm curious, why are you implementing the alternating color style within the td's and not the tr's. -Jeff -----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 XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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