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Posted to dev@struts.apache.org by ce...@apache.org on 2002/11/05 15:19:40 UTC
cvs commit: jakarta-struts/web/tiles-documentation/layouts nestedTabsLayout.jsp
cedric 2002/11/05 06:19:40
Added: web/tiles-documentation/layouts nestedTabsLayout.jsp
Log:
New layout for tabs. This layout allows nested tabs.
Revision Changes Path
1.1 jakarta-struts/web/tiles-documentation/layouts/nestedTabsLayout.jsp
Index: nestedTabsLayout.jsp
===================================================================
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-tiles.tld" prefix="tiles" %>
<%--
Tabs Layout .
This layout allows to render several tiles in a tabs fashion. Such tabs can be nested: a tab level can contain nested tabs. Each tabs must be declared with a different parameter name.
Implementation store each tabs selection index in the session context. The unique id for the
session attribut is compute from the url and the tabs selection parameter.
[todo] Improve the computation of unique id.
@param tabList A list of available tabs. We use MenuItem to carry data (name, body, icon, ...)
@param selectedIndex Index of default selected tab
@param parameterName Name of parameter carrying selected info in http request.
--%>
<%--
Use tiles attributes, and declare them as page java variable.
These attribute must be passed to the tile.
--%>
<tiles:useAttribute name="parameterName" classname="java.lang.String" />
<tiles:useAttribute id="selectedIndexStr" name="selectedIndex" ignore="true" classname="java.lang.String" />
<tiles:useAttribute name="tabList" classname="java.util.List" />
<%
String selectedColor="#98ABC7";
String notSelectedColor="#C0C0C0";
int index = 0; // Loop index
int selectedIndex = 0;
// Check if selected come from request parameter
try {
selectedIndex = Integer.parseInt(selectedIndexStr);
// Try to retrieve from http parameter, or previous storage
// Need to use a more unique id for storage name
String paramValue = request.getParameter( parameterName );
if( paramValue == null )
{
selectedIndex = ((Integer)(session.getAttribute(
request.getRequestURI() + parameterName ))).intValue();
}
else
selectedIndex = Integer.parseInt(paramValue);
}
catch( java.lang.NumberFormatException ex )
{ // do nothing
}
catch( java.lang.NullPointerException ex )
{ // do nothing
}
// Check selectedIndex bounds
if( selectedIndex < 0 || selectedIndex >= tabList.size() ) selectedIndex = 0;
String selectedBody = ((org.apache.struts.tiles.beans.MenuItem)tabList.get(selectedIndex)).getLink(); // Selected body
// Store selected index for future references
session.setAttribute( request.getRequestURI() + parameterName , new Integer(selectedIndex) );
%>
<table border="0" cellspacing="0" cellpadding="0">
<%-- Draw tabs --%>
<tr>
<td width="10"> </td>
<td>
<table border="0" cellspacing="0" cellpadding="5">
<tr>
<logic:iterate id="tab" name="tabList" type="org.apache.struts.tiles.beans.MenuItem" >
<% // compute href
String href = request.getRequestURI() + "?"+parameterName + "=" + index;
String color = notSelectedColor;
if( index == selectedIndex )
{
selectedBody = tab.getLink();
color = selectedColor;
} // enf if
index++;
%>
<td bgcolor="<%=color%>">
<a href="<%=href%>" ><%=tab.getValue()%></a>
</td>
<td width="1" ></td>
</logic:iterate>
</tr>
</table>
</td>
<td width="10" > </td>
</tr>
<tr>
<td height="5" bgcolor="<%=selectedColor%>" colspan="3" > </td>
</tr>
<%-- Draw body --%>
<tr>
<td width="10" bgcolor="<%=selectedColor%>"> </td>
<td>
<tiles:insert name="<%=selectedBody%>" flush="true" />
</td>
<td width="10" bgcolor="<%=selectedColor%>"> </td>
</tr>
<tr>
<td height="5" bgcolor="<%=selectedColor%>" colspan="3" > </td>
</tr>
</table>
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