Ticket #27013: 27013.patch

src/wp-includes/js/tinymce/plugins/wordpress/plugin.js

@@ -278 +278 @@
         editor.on( 'init', function() {
                 var env = tinymce.Env,
                         bodyClass = ['mceContentBody'], // back-compat for themes that use this in editor-style.css...
-                        body = editor.getBody();
+                        doc = editor.getDoc();
 
                 if ( editor.getParam( 'directionality' ) === 'rtl' ) {
                         bodyClass.push('rtl');
@@ -298 +298 @@
 
                 tinymce.each( bodyClass, function( cls ) {
                         if ( cls ) {
-                                editor.dom.addClass( body, cls );
+                                editor.dom.addClass( doc.body, cls );
                         }
                 });
 
@@ -314 +314 @@
                 if ( typeof window.jQuery !== 'undefined' ) {
                         window.jQuery( document ).triggerHandler( 'tinymce-editor-init', [editor] );
                 }
+
+                // When scrolling with mouse wheel or trackpad inside the editor, don't scroll the parent window
+                editor.dom.bind( doc, 'onwheel' in doc ? 'wheel' : 'mousewheel', function( event ) {
+                        var delta, docElement = doc.documentElement;
+
+                        if ( editor.settings.wp_fullscreen || 'ontouchstart' in window ) {
+                                return;
+                        }
+
+                        if ( typeof event.deltaY !== 'undefined' ) {
+                                delta = event.deltaY;
+
+                                if ( typeof event.deltaMode !== 'undefined' && event.deltaMode === event.DOM_DELTA_LINE ) {
+                                        delta *= 20;
+                                }
+                        } else {
+                                delta = -event.wheelDelta;
+                        }
+
+                        // Reverse direction for MacOS
+                        if ( env.mac ) {
+                                delta *= -1;
+                        }
+
+                        event.preventDefault();
+
+                        if ( ( docElement.scrollTop === 0 && delta < 0 ) ||
+                                ( docElement.clientHeight + docElement.scrollTop === docElement.scrollHeight && delta > 0 ) ) {
+
+                                return;
+                        }
+
+                        if ( env.webkit ) {
+                                doc.body.scrollTop += delta;
+                        } else {
+                                docElement.scrollTop += delta;
+                        }
+                });
         });
 
         // Word count