right - here's how we're going to link comanche with webpages

boot.php

@@ -462,7 +462,7 @@ define ( 'ITEM_UNPUBLISHED',     0x0020);
 define ( 'ITEM_WEBPAGE',         0x0040);  // is a static web page, not a conversational item
 define ( 'ITEM_DELAYED_PUBLISH', 0x0080); 
 define ( 'ITEM_BUILDBLOCK',      0x0100);  // Named thusly to make sure nobody confuses this with ITEM_BLOCKED
-
+define ( 'ITEM_PDL',             0x0200);  // Page Description Language - e.g. Comanche
 /**
  * Item Flags
  */

include/comanche.php

@@ -0,0 +1,48 @@
+<?php /** @file */
+
+require_once('include/security.php');
+
+// When editing a webpage - a dropdown is needed to select a page layout
+// On submit, the pdl_select value (which is the mid of an item with item_restrict = ITEM_PDL) is stored in 
+// the webpage's resource_id, with resource_type 'pdl'.
+
+// Then when displaying a webpage, we can see if it has a pdl attached. If not we'll 
+// use the default site/page layout.
+
+// If it has a pdl we'll load it as we know the mid and pass the body through comanche_parser() which will generate the 
+// page layout from the given description
+
+
+function pdl_selector($uid,$current="") {
+
+	$o = '';
+
+	// You can use anybody's Comanche layouts on this site that haven't been protected in some way
+
+	$sql_extra = item_permissions_sql($uid);
+
+	// By default order by title (therefore at this time pdl's need a unique title across this system), 
+	// though future work may allow categorisation
+	// based on taxonomy terms
+
+	$r = q("select title, mid from item where (item_restrict & %d) $sql_extra order by title",
+		intval(ITEM_PDL)
+	);
+
+	$arr = array('channel_id' => $uid, 'current' => $current, 'entries' => $r);
+	call_hooks('pdl_selector',$arr);
+
+	$entries = $arr['entries'];
+	$current = $arr['current'];		
+ 
+	$o .= "<select name=\"pdl_select\" id=\"pdl_select\" size=\"1\" >";
+	$entries[] = array('title' => t('Default'), 'mid' => '');
+	foreach($entries as $selection) {
+		$selected = (($selection == $current) ? ' selected="selected" ' : '');
+		$o .= "<option value=\"{$selection['mid']}\" $selected >{$selection['title']}</option>";
+	}
+
+	$o .= '</select>';
+	return $o;
+}	
+

version.inc

@@ -1 +1 @@
-2013-08-27.418
+2013-08-28.419