[FIX] web_editor: don't loose selection when deleting an image

addons/web_editor/static/src/js/rte.js

@@ -25,7 +25,7 @@ var History = function History ($editable) {
 
     this.makeSnap = function (event, rng) {
         rng = rng || range.create();
-        var elEditable = $(rng.sc).closest('.o_editable')[0];
+        var elEditable = $(rng && rng.sc).closest('.o_editable')[0];
         if (!elEditable) {
             return false;
         }

addons/web_editor/static/src/js/summernote.js

@@ -1195,9 +1195,11 @@ function remove_table_content(sc, ec) {
 $.summernote.pluginEvents.delete = function (event, editor, layoutInfo) {
     var $editable = layoutInfo.editable();
     $editable.data('NoteHistory').recordUndo($editable, "delete");
-    
+
     var r = range.create();
+    if (!r) return;
     if (!r.isContentEditable()) {
+        event.preventDefault();
         return false;
     }
     if (!r.isCollapsed()) {
@@ -1234,6 +1236,7 @@ $.summernote.pluginEvents.delete = function (event, editor, layoutInfo) {
     if (dom.isImg(node) || (!contentAfter && dom.isImg(dom.hasContentAfter(node)))) {
         var parent;
         var index;
+        var rng;
         if (!dom.isImg(node)) {
             node = dom.hasContentAfter(node);
         }
@@ -1242,13 +1245,16 @@ $.summernote.pluginEvents.delete = function (event, editor, layoutInfo) {
             index = dom.position(node);
             if (index>0) {
                 var next = node.previousSibling;
-                range.create(next,next.textContent.length).select();
+                rng = range.create(next, next.textContent.length);
+            } else {
+                rng = range.create(parent, 0);
             }
             if (!dom.hasContentAfter(node) && !dom.hasContentBefore(node)) {
                 parent.appendChild($('<br/>')[0]);
             }
             parent.removeChild(node);
             node = parent;
+            rng.select();
         }
     }
     // empty tag

addons/web_editor/static/src/js/tour.rte.js

@@ -138,7 +138,7 @@ Tour.register({
         {
             waitFor:   '#editable_area > section .row > div:first:has( font:last:containsExact(i) )',
             element:   '.note-air-popover button[data-event="undo"]',
-            title:     "undo adain",
+            title:     "undo again",
         },
         {
             waitFor:   '#editable_area > section .row > div:first:not(:has(p font)) h1',