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From rwat...@apache.org
Subject svn commit: r355379 - /portals/jetspeed-2/trunk/xdocs/guides/guide-menus-declarative-psml.xml
Date Fri, 09 Dec 2005 05:19:29 GMT
Author: rwatler
Date: Thu Dec  8 21:19:27 2005
New Revision: 355379

URL: http://svn.apache.org/viewcvs?rev=355379&view=rev
complete declarative menus document first pass


Modified: portals/jetspeed-2/trunk/xdocs/guides/guide-menus-declarative-psml.xml
URL: http://svn.apache.org/viewcvs/portals/jetspeed-2/trunk/xdocs/guides/guide-menus-declarative-psml.xml?rev=355379&r1=355378&r2=355379&view=diff
--- portals/jetspeed-2/trunk/xdocs/guides/guide-menus-declarative-psml.xml (original)
+++ portals/jetspeed-2/trunk/xdocs/guides/guide-menus-declarative-psml.xml Thu Dec  8 21:19:27
@@ -347,11 +347,93 @@
 <section name='Page Layout Decorators'>
+The page layout decorators request menus from the Portal Site Component when the page is
being rendered in the Jetspeed2 pipeline.
+The decorators expect certain menus to be provided by the PSML declarations. Before custom
menus can be displayed in the portal,
+the decorators need to be modified to render the custom menu. Here is an example taken from
a Velocity layout decorator header.vm file:
+#set($pagesStandardMenu = $site.getMenu("pages"))
+  <div class="tabs">
+#includeTabsNavigation($pagesStandardMenu $LEFT_TO_RIGHT)
+  </div>
+This code block renders the standard pages tabs menu within a portal page. The Portal Site
Component is exposed as the <i>$site</i>
+Velocity context variable. The test for an empty menu definition is designed to ensure that
empty menus are not rendered into the page
+content. Finally, a decorator macro is executed to expand the menu content. This approach
is taken in general to support the rendering
+of nested menus with recursive invocations of the macro. In this case, the decorator is expecting
only page options. Here is the
+macro implementation used to render the pages tabs menu:
+#macro (includeTabsNavigation $_menu $_orientation)
+  <table border="0" cellpadding="0" cellspacing="0">
+  <tr>
+    #foreach($element in $_menu.elements.iterator())
+      #if($element.elementType == "option")
+        #set($tabTitle = $element.getTitle($preferedLocale))
+        #set($tabName = $element.getShortTitle($preferedLocale))
+        #if($_orientation == $LEFT_TO_RIGHT)
+          #if($element.isSelected($site))
+            <td class="LTabLeft" nowrap="true">&nbsp;</td>
+            <td class="LTab" align="center" valign="middle" nowrap="true" title="$!tabTitle">${tabName}</td>
+            <td class="LTabRight"  nowrap="true">&nbsp;</td>
+          #else
+            #set($tabUrl = $jetspeed.getAbsoluteUrl($element.url))
+            <td class="LTabLeftLow"  nowrap="true">&nbsp;</td>
+            <td class="LTabLow" align="center" valign="middle" nowrap="true" title="$!tabTitle"><a
+            <td class="LTabRightLow"  nowrap="true">&nbsp;</td>
+          #end
+        #end
+      #end
+    #end
+  </tr>
+  </table>
+This macro iterates over the computed page menu options supplied by the Portal Site Component,
rendering a series of table
+data HTML elements that make up each displayed tab. The whole menu is rendered as a HTML
table with a single row.
+The declarative menu Portal Site Component objects exposed to the layout decorators are documented
in the 
+<a href="../multiproject/jetspeed-api/apidocs/index.html">Jetspeed API</a>. Here
is a list of the primary interfaces
+that make up this interface:
+	<li><a href="../multiproject/jetspeed-api/apidocs/org/apache/jetspeed/portalsite/Menu.html">org.apache.jetspeed.portalsite.Menu</a></li>
+	<li><a href="../multiproject/jetspeed-api/apidocs/org/apache/jetspeed/portalsite/MenuElement.html">org.apache.jetspeed.portalsite.MenuElement</a></li>
+	<li><a href="../multiproject/jetspeed-api/apidocs/org/apache/jetspeed/portalsite/MenuOption.html">org.apache.jetspeed.portalsite.MenuOption</a></li>
+	<li><a href="../multiproject/jetspeed-api/apidocs/org/apache/jetspeed/portalsite/MenuSeparator.html">org.apache.jetspeed.portalsite.MenuSeparator</a></li>
+	<li><a href="../multiproject/jetspeed-api/apidocs/org/apache/jetspeed/portalsite/PortalSiteRequestContext.html">org.apache.jetspeed.portalsite.PortalSiteRequestContext</a></li>
+Please refer to the <a href="../multiproject/jetspeed-api/apidocs/index.html">javadocs</a>
for these interfaces and
+sample Velocity decorators for more information.
+Jetspeed2 provides many sample decorators including those that will render tabs, navigation
panes with nested submenus,
+history breadcrumb links, and even DHTML JSCookMenu nested pulldown menus... all from the
declarative menu elements
+documented here. 
 <section name='Portal Site Component'>
+The Jetspeed2 Portal Site Component has two closely related responsibilities:
+	<li>Map portal request urls from a user to PSML <a href="guide-psml.html#Page">page</a>
or <a href="guide-psml.html#Folder">folder</a> elements in the site, and</li>
+    <li>construct site navigational menus and their options that reflect what is available
to the user from the site.</li>
+At first glance, these functions seem relatively simple: searching within and traversing
the <a href="guide-psml.html">PSML site definition</a>.
+However, once the complexities of the <a href="guide-profiler.html">Profiler</a>
aggregation and <a href="guide-security-declarative-psml.html">Security Constraints</a>
filtering are taken into account, the mapping is no longer trivial.
+It is important to note that menu options are matched against the Portal Site Component mapped
view of the PSML site. The
+document paths specified in the menu elements are not the physical paths used to navigate
the PSML folders and pages. Instead,
+paths that mirror portal requests are used to select PSML elements to include as menu options.
In this manner, profiling and
+security are automatically factored into the menu option population... rather as if running
the request url mapping in reverse.

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