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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Fri Dec 06 19:57:07 CET 2002 --><TITLE>jakarta-turbine-2 2.2 API: Class ActionEvent</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/ActionEvent.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/apache/turbine/modules/Action.html"><B>PREV CLASS</B></A> <A HREF="../../../../org/apache/turbine/modules/ActionLoader.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="ActionEvent.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.apache.turbine.modules</FONT><BR>Class ActionEvent</H2><PRE>java.lang.Object | +--<A HREF="../../../../org/apache/turbine/modules/Assembler.html">org.apache.turbine.modules.Assembler</A> | +--<A HREF="../../../../org/apache/turbine/modules/Action.html">org.apache.turbine.modules.Action</A> | +--<B>org.apache.turbine.modules.ActionEvent</B></PRE><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/apache/turbine/util/velocity/VelocityActionEvent.html">VelocityActionEvent</A>, <A HREF="../../../../org/apache/turbine/util/webmacro/WebMacroActionEvent.html">WebMacroActionEvent</A></DD></DL><HR><DL><DT>public abstract class <B>ActionEvent</B><DT>extends <A HREF="../../../../org/apache/turbine/modules/Action.html">Action</A></DL><P><p> This is an alternative to the Action class that allows you to do event based actions. Essentially, you label all your submit buttons with the prefix of "eventSubmit_" and the suffix of "methodName". For example, "eventSubmit_doDelete". Then any class that subclasses this class will get its "doDelete(RunData data)" method executed. If for any reason, it was not able to execute the method, it will fall back to executing the doPeform() method which is required to be implemented. <p> Limitations: <p> Because ParameterParser makes all the key values lowercase, we have to do some work to format the string into a method name. For example, a button name eventSubmit_doDelete gets converted into eventsubmit_dodelete. Thus, we need to form some sort of naming convention so that dodelete can be turned into doDelete. <p> Thus, the convention is this: <ul> <li>The variable name MUST have the prefix "eventSubmit_".</li> <li>The variable name after the prefix MUST begin with the letters "do".</li> <li>The first letter after the "do" will be capitalized and the rest will be lowercase</li> </ul> If you follow these conventions, then you should be ok with your method naming in your Action class.<P><DL><DT><B>Version: </B><DD>$Id: ActionEvent.java,v 1.1.1.1 2001/08/16 05:08:29 jvanzyl Exp $</DD><DT><B>Author: </B><DD><a href="mailto:jon@latchkey.com">Jon S. Stevens </a></DD></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/turbine/modules/ActionEvent.html#BUTTON">BUTTON</A></B></CODE><BR> The name of the button to look for.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/turbine/modules/ActionEvent.html#BUTTON_LENGTH">BUTTON_LENGTH</A></B></CODE><BR> The length of the button to look for.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/turbine/modules/ActionEvent.html#LENGTH">LENGTH</A></B></CODE><BR> The length of the button to look for.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/turbine/modules/ActionEvent.html#METHOD_NAME_LENGTH">METHOD_NAME_LENGTH</A></B></CODE><BR> The length of the method name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/turbine/modules/ActionEvent.html#METHOD_NAME_PREFIX">METHOD_NAME_PREFIX</A></B></CODE><BR> The prefix of the method name.</TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/apache/turbine/modules/ActionEvent.html#ActionEvent()">ActionEvent</A></B>()</CODE><BR> </TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/turbine/modules/ActionEvent.html#doPerform(org.apache.turbine.util.RunData)">doPerform</A></B>(<A HREF="../../../../org/apache/turbine/util/RunData.html">RunData</A> data)</CODE><BR> You need to implement this in your classes that extend this class.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/turbine/modules/ActionEvent.html#executeEvents(org.apache.turbine.util.RunData)">executeEvents</A></B>(<A HREF="../../../../org/apache/turbine/util/RunData.html">RunData</A> data)</CODE><BR>⌨️ 快捷键说明
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