update

src/core/wrapper/layout.js

@@ -400,27 +400,9 @@ BI.Layout = BI.inherit(BI.Widget, {
                 oldEndVnode = oldCh[--oldEndIdx];
                 newStartVnode = newCh[++newStartIdx];
             } else {
-                if (oldKeyToIdx === undefined) {
-                    oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx);
-                }
-                idxInOld = oldKeyToIdx[newStartVnode.key];
-                if (BI.isNull(idxInOld)) {
-                    var node = addNode(newStartVnode);
-                    insertBefore(node, oldStartVnode);
-                    newStartVnode = newCh[++newStartIdx];
-                } else {
-                    elmToMove = oldCh[idxInOld];
-                    var node = addNode(newStartVnode);
-                    insertBefore(node, oldStartVnode);
-                    // if (elmToMove.sel !== newStartVnode.sel) {
-                    //     api.insertBefore(parentElm, createElm(newStartVnode), oldStartVnode.elm);
-                    // } else {
-                    //     updated = this.patchItem(elmToMove, newStartVnode, idxInOld) || updated;
-                    //     oldCh[idxInOld] = undefined;
-                    //     api.insertBefore(parentElm, (elmToMove.elm), oldStartVnode.elm);
-                    // }
-                    newStartVnode = newCh[++newStartIdx];
-                }
+                var node = addNode(newStartVnode);
+                insertBefore(node, oldStartVnode);
+                newStartVnode = newCh[++newStartIdx];
             }
         }
         if (oldStartIdx > oldEndIdx) {
@@ -493,15 +475,6 @@ BI.Layout = BI.inherit(BI.Widget, {
             }
         }
 
-        function createKeyToOldIdx(children, beginIdx, endIdx) {
-            var i, map = {}, key;
-            for (i = beginIdx; i <= endIdx; ++i) {
-                key = children[i].key;
-                if (key !== undefined) map[key] = i;
-            }
-            return map;
-        }
-
         return updated;
     },