From dd624054a469d9e8ceb91cc2ee3f63a393f016db Mon Sep 17 00:00:00 2001
From: ben <ben@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Fri, 15 Feb 2008 11:49:32 +0000
Subject: Plugins can now extend views.

git-svn-id: https://code.elgg.org/elgg/trunk@37 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/elgglib.php | 80 +++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 70 insertions(+), 10 deletions(-)

(limited to 'engine/lib/elgglib.php')

diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index b68258470..218e2cb07 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -94,17 +94,32 @@
 		        $viewtype = $_SESSION['view'];
 		    }
 		
+		    if (isset($CONFIG->views->extensions[$view])) {
+		    	$viewlist = $CONFIG->views->extensions[$view];
+		    } else {
+		    	$viewlist = array(500 => $view);
+		    }
+		    
 		    ob_start();
-		    if (!@include($CONFIG->viewpath . "views/{$viewtype}/{$view}.php")) {
-		        $success = false;
-		        if ($viewtype != "default") {
-		            if (@include($CONFIG->viewpath . "views/default/{$view}.php")) {
-		                $success = true;
-		            }
-		        }
-		        if (!$success && $debug == true) {
-		            echo " [This view ({$view}) does not exist] ";
-		        }
+		    foreach($viewlist as $view) {
+		    
+		    	if (!isset($CONFIG->views->locations[$view])) {
+		    		$location = $CONFIG->viewpath . "views/";
+		    	} else {
+		    		$location = $CONFIG->views->locations[$view];
+		    	}
+			    if (!@include($location . "{$viewtype}/{$view}.php")) {
+			        $success = false;
+			        if ($viewtype != "default") {
+			            if (@include($location . "views/default/{$view}.php")) {
+			                $success = true;
+			            }
+			        }
+			        if (!$success && $CONFIG->debug == true) {
+			            echo " [This view ({$view}) does not exist] ";
+			        }
+			    }
+		    
 		    }
 		    $content = ob_get_clean();
 		
@@ -112,6 +127,51 @@
 		
 		}
 		
+	/**
+	 * Extends a view by adding other views to be displayed at the same time.
+	 *
+	 * @param string $view The view to add to.
+	 * @param string $view_name The name of the view to extend
+	 * @param int $priority The priority, from 0 to 1000, to add at (lowest numbers will be displayed first)
+	 */
+		function extend_view($view, $view_name, $priority = 501) {
+			
+			global $CONFIG;
+			if (!isset($CONFIG->views)) {
+				$CONFIG->views = new stdClass;
+			}
+			if (!isset($CONFIG->views->extensions)) {
+				$CONFIG->views->extensions = array();
+			}
+			if (!isset($CONFIG->views->extensions[$view])) {
+				$CONFIG->views[$view][500] = "{$view}";
+			}
+			while(isset($CONFIG->views->extensions[$view][$priority])) {
+				$priority++;
+			}
+			$CONFIG->views->extensions[$view][$priority] = "{$view_name}";
+			ksort($CONFIG->views->extensions[$view]);
+			
+		}
+		
+	/**
+	 * Set an alternative base location for a view (as opposed to the default of $CONFIG->viewpath)
+	 *
+	 * @param string $view The name of the view
+	 * @param string $location The base location path
+	 */
+		function set_view_location($view, $location) {
+			
+			global $CONFIG;
+			if (!isset($CONFIG->views)) {
+				$CONFIG->views = new stdClass;
+			}
+			if (!isset($CONFIG->views->locations)) {
+				$CONFIG->views->locations = array($view => $location);
+			}
+			
+		}
+		
 	/**
 	 * Returns a representation of a full 'page' (which might be an HTML page, RSS file, etc, depending on the current view)
 	 *
-- 
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