EVOLUTION-MANAGER
Edit File: validDetails.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Customising grid grob Validation</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for validDetails {grid}"><tr><td>validDetails {grid}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2> Customising grid grob Validation </h2> <h3>Description</h3> <p>This generic hook function is called whenever a grid grob is created or edited via <code>grob</code>, <code>gTree</code>, <code>grid.edit</code> or <code>editGrob</code>. This provides an opportunity for customising the validation of a new class derived from grob (or gTree). </p> <h3>Usage</h3> <pre> validDetails(x) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>x</code></td> <td> <p> A grid grob. </p> </td></tr> </table> <h3>Details</h3> <p>This function is called by <code>grob</code>, <code>gTree</code>, <code>grid.edit</code> and <code>editGrob</code>. A method should be written for classes derived from grob or gTree to validate the values of slots specific to the new class. (e.g., see <code>grid:::validDetails.axis</code>). </p> <p>Note that the standard slots for grobs and gTrees are automatically validated (e.g., <code>vp</code>, <code>gp</code> slots for grobs and, in addition, <code>children</code>, and <code>childrenvp</code> slots for gTrees) so only slots specific to a new class need to be addressed. </p> <h3>Value</h3> <p>The function MUST return the validated grob. </p> <h3>Author(s)</h3> <p> Paul Murrell </p> <h3>See Also</h3> <p><code><a href="grid.edit.html">grid.edit</a></code> </p> <hr /><div style="text-align: center;">[Package <em>grid</em> version 3.6.0 <a href="00Index.html">Index</a>]</div> </body></html>