############################################################################################################
Widget visibility hack for b2evolution 2.4.1.
This hack adds the function to hide or show a single widget.

Patch in the root directory (the directory which holds the folders "inc", "conf" etc.).
The command you would use under Linux (and perhaps other operating systems) is:

patch -p1 < path/to/this/file

Now modify your b2evolution database. Execute the following SQL command:

ALTER TABLE `evo_widget` ADD `wi_show` BOOL NOT NULL DEFAULT '1' COMMENT 'visibility hack' AFTER `wi_order`;

Have fun.
############################################################################################################

diff -ru c1/inc/skins/model/_skin.class.php c2/inc/skins/model/_skin.class.php
--- c1/inc/skins/model/_skin.class.php	2008-03-16 17:23:08.000000000 +0100
+++ c2/inc/skins/model/_skin.class.php	2008-03-19 00:18:40.000000000 +0100
@@ -164,6 +164,9 @@
 		{
 			foreach( $Widget_array as $ComponentWidget )
 			{
+			    // visibility hack
+			    // skip this widget if it's hidden
+			    if (!$ComponentWidget->get('show')) continue;
 				// Let the Widget display itself (with contextual params):
 				$ComponentWidget->display( $params );
 			}
@@ -428,4 +431,4 @@
 
 
 
-?>
\ Kein Zeilenumbruch am Dateiende.
+?>
diff -ru c1/inc/widgets/model/_widget.class.php c2/inc/widgets/model/_widget.class.php
--- c1/inc/widgets/model/_widget.class.php	2008-03-16 17:23:08.000000000 +0100
+++ c2/inc/widgets/model/_widget.class.php	2008-03-19 00:18:40.000000000 +0100
@@ -40,6 +40,8 @@
 	 */
 	var $sco_name;
 	var $order;
+    // visibility hack
+    var $show;
 	/**
 	 * @var string Type of the plugin ("core" or "plugin")
 	 */
@@ -92,6 +94,8 @@
 			$this->code     = $db_row->wi_code;
 			$this->params   = $db_row->wi_params;
 			$this->order    = $db_row->wi_order;
+			// visibility hack
+			$this->show     = $db_row->wi_show;
 		}
 	}
 
@@ -723,4 +727,4 @@
 
 
 
-?>
\ Kein Zeilenumbruch am Dateiende.
+?>
diff -ru c1/inc/widgets/views/_widget_list.view.php c2/inc/widgets/views/_widget_list.view.php
--- c1/inc/widgets/views/_widget_list.view.php	2008-03-16 17:23:08.000000000 +0100
+++ c2/inc/widgets/views/_widget_list.view.php	2008-03-19 00:18:40.000000000 +0100
@@ -104,6 +104,11 @@
 			{	// The name is customized and the short desc may be relevant additional info
 				$widget_name .= ' ('.$ComponentWidget->get_short_desc().')';
 			}
+			// visibility hack
+			if (!$ComponentWidget->get('show')) // widget is hidden...
+			{
+                $widget_name .= ' ['.T_('Hidden').']'; // ...so let's show this in the widget title.
+            }
 			echo '<a href="'.regenerate_url( 'blog', 'action=edit&amp;wi_ID='.$ComponentWidget->ID).'">'.$widget_name.'</a>';
 			$Table->display_col_end();
 
@@ -135,6 +140,8 @@
 
 			// Actions
 			$Table->display_col_start();
+			// visibility hack
+            echo $ComponentWidget->get('show') ? action_icon( T_('Hide this widget!'), 'deactivate', regenerate_url( 'blog', 'action=toggle&amp;wi_ID='.$ComponentWidget->ID )) : action_icon( T_('Show this widget!'), 'activate', regenerate_url( 'blog', 'action=toggle&amp;wi_ID='.$ComponentWidget->ID ));
 			echo action_icon( T_('Edit widget settings!'), 'edit', regenerate_url( 'blog', 'action=edit&amp;wi_ID='.$ComponentWidget->ID ) );
 			echo action_icon( T_('Remove this widget!'), 'delete', regenerate_url( 'blog', 'action=delete&amp;wi_ID='.$ComponentWidget->ID ) );
 			$Table->display_col_end();
@@ -173,4 +180,4 @@
 echo '<script type="text/javascript">addEvent( window, "load", Fat.fade_all, false);</script>';
 
 
-?>
\ Kein Zeilenumbruch am Dateiende.
+?>
diff -ru c1/inc/widgets/widgets.ctrl.php c2/inc/widgets/widgets.ctrl.php
--- c1/inc/widgets/widgets.ctrl.php	2008-03-16 17:23:08.000000000 +0100
+++ c2/inc/widgets/widgets.ctrl.php	2008-03-19 00:18:41.000000000 +0100
@@ -53,6 +53,8 @@
 	case 'delete':
 	case 'move_up':
 	case 'move_down':
+	// visibility hack
+	case 'toggle':
 		param( 'wi_ID', 'integer', true );
 		$WidgetCache = & get_Cache( 'WidgetCache' );
 		$edited_ComponentWidget = & $WidgetCache->get_by_ID( $wi_ID );
@@ -126,6 +128,8 @@
 
 		$edited_ComponentWidget->set( 'coll_ID', $Blog->ID );
 		$edited_ComponentWidget->set( 'sco_name', $container );
+		// visibility hack
+		$edited_ComponentWidget->set('show', 1);
 
 		// INSERT INTO DB:
 		$edited_ComponentWidget->dbinsert();
@@ -229,6 +233,22 @@
  	case 'list':
 		break;
 
+    // visibility hack
+    case 'toggle':
+        if ($edited_ComponentWidget->get('show') == 1)
+        {
+            $Messages->add(T_('Widget has been hidden'), 'success');
+            $edited_ComponentWidget->set('show', 0);
+        }
+        else
+        {
+            $Messages->add(T_('Widget has been shown'), 'success');
+            $edited_ComponentWidget->set('show', 1);
+        }
+        $edited_ComponentWidget->dbupdate();
+        $action = 'list';
+        break;
+
 	default:
 		debug_die( 'Action: unhandled action' );
 }
@@ -303,4 +323,4 @@
 
 
 
-?>
\ Kein Zeilenumbruch am Dateiende.
+?>