From 42ac48d52a48530e22838173ecf50341c8fc703d Mon Sep 17 00:00:00 2001
From: Andrew Ozz <azaozz@git.wordpress.org>
Date: Sat, 26 Jul 2014 00:07:55 +0000
Subject: [PATCH] TinyMCE: - Fix complex character input in Japanese, Chinese,
 etc. Was broken in getCursorOffset() in editor-expand.js. - Disable
 auto-scrolling in some edge cases when editor expanding is enabled. See
 #28328.

git-svn-id: https://develop.svn.wordpress.org/trunk@29302 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-admin/js/editor-expand.js              | 71 +++++++------------
 .../js/tinymce/plugins/wpview/plugin.js       |  3 +-
 2 files changed, 26 insertions(+), 48 deletions(-)

diff --git a/src/wp-admin/js/editor-expand.js b/src/wp-admin/js/editor-expand.js
index bc255553c8..8cc3f80ff1 100644
--- a/src/wp-admin/js/editor-expand.js
+++ b/src/wp-admin/js/editor-expand.js
@@ -124,13 +124,18 @@ jQuery( document ).ready( function($) {
 		$visualEditor = $contentWrap.find( '.mce-edit-area' );
 		$statusBar = $contentWrap.find( '.mce-statusbar' ).filter( ':visible' );
 
-		// Adjust when switching editor modes.
-		editor.on( 'show', function() {
-			setTimeout( function() {
-				editor.execCommand( 'wpAutoResize' );
-				adjust();
-			}, 300 );
-		} );
+		function getCursorOffset() {
+			var node = editor.selection.getNode(),
+				view, offset;
+
+			if ( editor.plugins.wpview && ( view = editor.plugins.wpview.getView( node ) ) ) {
+				offset = view.getBoundingClientRect();
+			} else {
+				offset = node.getBoundingClientRect();
+			}
+
+			return offset.height ? offset : false;
+		}
 
 		// Make sure the cursor is always visible.
 		// This is not only necessary to keep the cursor between the toolbars,
@@ -150,13 +155,18 @@ jQuery( document ).ready( function($) {
 				return;
 			}
 
-			cursorTop = offset.top + editor.getContentAreaContainer().getElementsByTagName( 'iframe' )[0].getBoundingClientRect().top;
+			cursorTop = offset.top + editor.getContentAreaContainer().firstChild.getBoundingClientRect().top;
 			cursorBottom = cursorTop + offset.height;
 			cursorTop = cursorTop - buffer;
 			cursorBottom = cursorBottom + buffer;
 			editorTop = $adminBar.outerHeight() + $tools.outerHeight() + $visualTop.outerHeight();
 			editorBottom = windowHeight - $bottom.outerHeight();
 
+			// Don't scroll if the node is taller than the visible part of the editor
+			if ( editorBottom - editorTop < offset.height ) {
+				return;
+			}
+
 			if ( cursorTop < editorTop && ( key === VK.UP || key === VK.LEFT || key === VK.BACKSPACE ) ) {
 				window.scrollTo( window.pageXOffset, cursorTop + window.pageYOffset - editorTop );
 			} else if ( cursorBottom > editorBottom ) {
@@ -164,44 +174,13 @@ jQuery( document ).ready( function($) {
 			}
 		} );
 
-		function getCursorOffset() {
-			var selection = editor.selection,
-				node = selection.getNode(),
-				range = selection.getRng(),
-				view, clone, offset;
-
-			if ( tinymce.Env.ie && tinymce.Env.ie < 9 ) {
-				return;
-			}
-
-			if ( editor.plugins.wpview && ( view = editor.plugins.wpview.getView( node ) ) ) {
-				offset = view.getBoundingClientRect();
-			} else if ( selection.isCollapsed() ) {
-				clone = range.cloneRange();
-
-				if ( clone.startContainer.length > 1 ) {
-					if ( clone.startContainer.length > clone.endOffset ) {
-						clone.setEnd( clone.startContainer, clone.endOffset + 1 );
-					} else {
-						clone.setStart( clone.startContainer, clone.endOffset - 1 );
-					}
-
-					selection.setRng( clone );
-					offset = selection.getRng().getBoundingClientRect();
-					selection.setRng( range );
-				} else {
-					offset = node.getBoundingClientRect();
-				}
-			} else {
-				offset = range.getBoundingClientRect();
-			}
-
-			if ( ! offset.height ) {
-				return;
-			}
-
-			return offset;
-		}
+		// Adjust when switching editor modes.
+		editor.on( 'show', function() {
+			setTimeout( function() {
+				editor.execCommand( 'wpAutoResize' );
+				adjust();
+			}, 300 );
+		} );
 
 		editor.on( 'hide', function() {
 			textEditorResize();
diff --git a/src/wp-includes/js/tinymce/plugins/wpview/plugin.js b/src/wp-includes/js/tinymce/plugins/wpview/plugin.js
index f770ada825..bb4f22972a 100644
--- a/src/wp-includes/js/tinymce/plugins/wpview/plugin.js
+++ b/src/wp-includes/js/tinymce/plugins/wpview/plugin.js
@@ -286,8 +286,7 @@ tinymce.PluginManager.add( 'wpview', function( editor ) {
 		});
 
 		editor.dom.bind( editor.getBody().parentNode, 'mousedown mouseup click', function( event ) {
-			var view = getView( event.target ),
-				deselectEventType;
+			var view = getView( event.target );
 
 			firstFocus = false;