From 11ef493f49931a22ca6149ffdd7121fa57cda9ac Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aaron@users.mediawiki.org>
Date: Thu, 15 Mar 2007 02:52:28 +0000
Subject: [PATCH] *Add nifty JS function to grey out cascade option when it
 will not apply

---
 includes/ProtectionForm.php | 13 +++++++++++--
 skins/common/protect.js     | 20 ++++++++++++++++++++
 2 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/includes/ProtectionForm.php b/includes/ProtectionForm.php
index 9ebacd8340..662b1df779 100644
--- a/includes/ProtectionForm.php
+++ b/includes/ProtectionForm.php
@@ -323,8 +323,17 @@ class ProtectionForm {
 	}
 
 	function buildCleanupScript() {
-		return '<script type="text/javascript">protectInitialize("mwProtectSet","' .
-			wfEscapeJsString( wfMsg( 'protect-unchain' ) ) . '")</script>';
+		global $wgRestrictionLevels, $wgGroupPermissions;
+		$script = 'var wgCascadeableLevels=';
+		$CascadeableLevels = array();
+		foreach( $wgRestrictionLevels as $key ) {
+			if ( isset($wgGroupPermissions[$key]['protect']) && $wgGroupPermissions[$key]['protect'] ) {
+				$CascadeableLevels[]="'" . wfEscapeJsString($key) . "'";
+			}
+		}
+		$script .= "[" . implode(',',$CascadeableLevels) . "];\n";
+		$script .= 'protectInitialize("mwProtectSet","' . wfEscapeJsString( wfMsg( 'protect-unchain' ) ) . '")';
+		return '<script type="text/javascript">' . $script . '</script>';
 	}
 
 	/**
diff --git a/skins/common/protect.js b/skins/common/protect.js
index 8968607371..f10c810a16 100644
--- a/skins/common/protect.js
+++ b/skins/common/protect.js
@@ -33,16 +33,36 @@ function protectInitialize(tableId, labelText) {
 			check.checked = true;
 			protectEnable(true);
 		}
+		
+		allowCascade();
 
 		return true;
 	}
 	return false;
 }
 
+function allowCascade() {
+	var pr_types = document.getElementsByTagName("select");
+	for (var i = 0; i < pr_types.length; i++) {
+		if (pr_types[i].id.match(/^mwProtect-level-/)) {
+			var selected_level = pr_types[i].getElementsByTagName("option")[pr_types[i].selectedIndex].value;
+			for (var k=0; k < wgCascadeableLevels.length; k++) {
+				if ( wgCascadeableLevels[k] != selected_level ) {
+					document.getElementById('mwProtect-cascade').disabled=true;
+					return false;
+				}
+			}
+		}
+	}
+	document.getElementById('mwProtect-cascade').disabled=false;
+	return true;
+}
+
 function protectLevelsUpdate(source) {
 	if (!protectUnchained()) {
 		protectUpdateAll(source.selectedIndex);
 	}
+	allowCascade();
 }
 
 function protectChainUpdate() {
-- 
2.20.1