wpView: use `data-mce-selected` instead of adding a class to mark a view as selected. This prevents adding an unneeded undo level. Props avryl, fixes #28313

Built from https://develop.svn.wordpress.org/trunk@28684


git-svn-id: http://core.svn.wordpress.org/trunk@28502 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/tinymce/plugins/wpview/plugin.js

@@ -73,7 +73,7 @@ tinymce.PluginManager.add( 'wpview', function( editor ) {
 
 		deselect();
 		selected = viewNode;
-		dom.addClass( viewNode, 'selected' );
+		dom.setAttrib( viewNode, 'data-mce-selected', 1 );
 
 		clipboard = dom.create( 'div', {
 			'class': 'wpview-clipboard',
@@ -109,7 +109,7 @@ tinymce.PluginManager.add( 'wpview', function( editor ) {
 			dom.remove( clipboard );
 
 			dom.unbind( selected, 'beforedeactivate focusin focusout click mouseup', _stop );
-			dom.removeClass( selected, 'selected' );
+			dom.setAttrib( selected, 'data-mce-selected', null );
 		}
 
 		selected = null;

wp-includes/js/tinymce/skins/wordpress/wp-content.css

@@ -231,13 +231,13 @@ audio {
 	border: 1px solid transparent;
 }
 
-.wpview-wrap.selected {
+.wpview-wrap[data-mce-selected] {
 	background-color: rgba(0,0,0,0.1);
 	border-color: rgba(0,0,0,0.3);
 }
 
-.ie8 .wpview-wrap.selected,
-.ie7 .wpview-wrap.selected {
+.ie8 .wpview-wrap[data-mce-selected],
+.ie7 .wpview-wrap[data-mce-selected] {
 	background-color: #e5e5e5;
 	border-color: #777;
 }
@@ -250,7 +250,7 @@ audio {
 	left: 0;
 }
 
-.wpview-wrap.selected .wpview-overlay {
+.wpview-wrap[data-mce-selected] .wpview-overlay {
 	display: none;
 }
 
@@ -262,7 +262,7 @@ audio {
 	z-index: 100;
 }
 
-.wpview-wrap.selected .toolbar {
+.wpview-wrap[data-mce-selected] .toolbar {
 	display: block;
 }
 
@@ -310,7 +310,7 @@ audio {
 	margin: 0;
 }
 
-.selected .wpview-error {
+.wpview-wrap[data-mce-selected] .wpview-error {
 	border-color: transparent;
 }
 
@@ -328,7 +328,6 @@ audio {
 	font-family: 'Open Sans', sans-serif;
 }
 
-
 .wpview-wrap .toolbar div:hover,
 #wp-image-toolbar i:hover {
 	box-shadow: 0 1px 3px rgba(0,0,0,0.8);