menu.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_11) on Tue Oct 23 19:38:41 EEST 2007 --><TITLE>Menu (Widsets API)</TITLE><META NAME="keywords" CONTENT="Menu class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="Menu (Widsets API)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../widsets/api/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="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="../../widsets/api/Map.html" title="class in "><B>PREV CLASS</B></A> <A HREF="../../widsets/api/MenuCallback.html" title="interface in "><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html?widsets/api/Menu.html" target="_top"><B>FRAMES</B></A> <A HREF="Menu.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1"></FONT><BR>Class Menu</H2><PRE> <IMG SRC="../../resources/inherit.gif" ALT="extended by "><A HREF="../../widsets/api/Object.html" title="class in ">Object</A> <IMG SRC="../../resources/inherit.gif" ALT="extended by "><B>Menu</B></PRE><HR><DL><DT><PRE> class <B>Menu</B><DT>extends <A HREF="../../widsets/api/Object.html" title="class in ">Object</A></DL></PRE><P><p> This class represents the Menus that are shown to user. Menu supports nesting and hiding/showing of individual menu items. </p> <p> Methods are designed so that it's easy to create menu structures with method chaining: </p> <pre>Menu m = Menu() .add(CMD_OPEN, "Open") .add(CMD_REMOVE, "Remove") .add(CMD_ADD, "Add") .begin(CMD_MORE, "More") .add(CMD_SYNC, "Synchronize") .add(CMD_SETTINGS, "Settings") .end() .add(CMD_EXIT, "Exit") Menu getMenu(Shell shell, Component focused) { return m.reset().enable(CMD_OPEN, focused != null) .enable(CMD_REMOVE, focused != null) .enable(CMD_SYNC, isOnline()); } </pre> <p> The upper case references are to ids created in the script: </p> <pre> const int CMD_OPEN = 0; const int CMD_REMOVE = 1; // etc... </pre> <p> These ids are given back in callback function arguments that are called when an action has happened: <A HREF="../../widsets/api/Script.html#actionPerformed(Shell, Component, int)"><CODE>Script.actionPerformed(Shell, Component, int)</CODE></A> or <A HREF="../../widsets/api/ActionCallback.html#actionPerformed(Shell, Component, int)"><CODE>ActionCallback.actionPerformed(Shell, Component, int)</CODE></A> </p><P><P><DL><DT><B>See Also:</B><DD><A HREF="../../widsets/api/MenuItem.html" title="class in "><CODE>MenuItem</CODE></A>, <A HREF="../../widsets/api/Script.html#getMenu(Shell, Component)"><CODE>Script.getMenu(Shell, Component)</CODE></A>, <A HREF="../../widsets/api/Script.html#getSoftKey(Shell, Component, int)"><CODE>Script.getSoftKey(Shell, Component, int)</CODE></A>, <a href="package-summary.html#callbacks">Callbacks</a></DL><HR><P><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../widsets/api/Menu.html#Menu()">Menu</A></B>()</CODE><BR> Constructs a new Menu instance.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../widsets/api/Menu.html" title="class in ">Menu</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../widsets/api/Menu.html#add(int, String)">add</A></B>(int id, <A HREF="../../widsets/api/String.html" title="class in ">String</A> text)</CODE><BR> Creates a new MenuItem with specified action id and text.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../widsets/api/Menu.html" title="class in ">Menu</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../widsets/api/Menu.html#begin(int, String)">begin</A></B>(int id, <A HREF="../../widsets/api/String.html" title="class in ">String</A> text)</CODE><BR> Creates a new MenuItem with sub menu.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../widsets/api/Menu.html" title="class in ">Menu</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../widsets/api/Menu.html#enable(int, boolean)">enable</A></B>(int id, boolean enabled)</CODE><BR> Enable or disable menu item with specified action id.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../widsets/api/Menu.html" title="class in ">Menu</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../widsets/api/Menu.html#end()">end</A></B>()</CODE><BR> Closes sub menu and returns to parent menu.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../widsets/api/MenuItem.html" title="class in ">MenuItem</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../widsets/api/Menu.html#get(int)">get</A></B>(int id)</CODE><BR> Returns MenuItem with specified action id.</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="../../widsets/api/Menu.html#open(Shell)">open</A></B>(<A HREF="../../widsets/api/Shell.html" title="class in ">Shell</A> parent)</CODE><BR> Opens this menu.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">⌨️ 快捷键说明
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