1 files changed, 34 insertions, 17 deletions
diff --git a/resources/src/mediawiki.action/mediawiki.action.edit.js b/resources/src/mediawiki.action/mediawiki.action.edit.js
index 01a25f3b..c9834f04 100644
--- a/resources/src/mediawiki.action/mediawiki.action.edit.js
+++ b/resources/src/mediawiki.action/mediawiki.action.edit.js
@@ -1,23 +1,40 @@
 /*!
  * Scripts for action=edit at domready
  */
-jQuery( function ( $ ) {
-	var editBox, scrollTop, $editForm;
+( function ( mw, $ ) {
+	'use strict';
 
-	// Make sure edit summary does not exceed byte limit
-	$( '#wpSummary' ).byteLimit( 255 );
+	/**
+	 * Fired when the editform is added to the edit page
+	 *
+	 * Similar to the {@link mw.hook#event-wikipage_content wikipage.content hook}
+	 * $editForm can still be detached when this hook is fired.
+	 *
+	 * @event wikipage_editform
+	 * @member mw.hook
+	 * @param {jQuery} $editForm The most appropriate element containing the
+	 *   editform, usually #editform.
+	 */
 
-	// Restore the edit box scroll state following a preview operation,
-	// and set up a form submission handler to remember this state.
-	editBox = document.getElementById( 'wpTextbox1' );
-	scrollTop = document.getElementById( 'wpScrolltop' );
-	$editForm = $( '#editform' );
-	if ( $editForm.length && editBox && scrollTop ) {
-		if ( scrollTop.value ) {
-			editBox.scrollTop = scrollTop.value;
+	$( function () {
+		var editBox, scrollTop, $editForm;
+
+		// Make sure edit summary does not exceed byte limit
+		$( '#wpSummary' ).byteLimit( 255 );
+
+		// Restore the edit box scroll state following a preview operation,
+		// and set up a form submission handler to remember this state.
+		editBox = document.getElementById( 'wpTextbox1' );
+		scrollTop = document.getElementById( 'wpScrolltop' );
+		$editForm = $( '#editform' );
+		mw.hook( 'wikipage.editform' ).fire( $editForm );
+		if ( $editForm.length && editBox && scrollTop ) {
+			if ( scrollTop.value ) {
+				editBox.scrollTop = scrollTop.value;
+			}
+			$editForm.submit( function () {
+				scrollTop.value = editBox.scrollTop;
+			} );
 		}
-		$editForm.submit( function () {
-			scrollTop.value = editBox.scrollTop;
-		} );
-	}
-} );
+	} );
+}( mediaWiki, jQuery ) );