diff --git a/bi/base.js b/bi/base.js
index 77e869009..e5b2ba897 100644
--- a/bi/base.js
+++ b/bi/base.js
@@ -3632,6 +3632,10 @@ BI.shortcut("bi.combo_group", BI.ComboGroup);BI.VirtualGroup = BI.inherit(BI.Wid
         return this.layouts.getValue();
     },
 
+    empty: function () {
+        this.layouts.empty();
+    },
+
     populate: function (items) {
         var self = this;
         items = items || [];
diff --git a/bi/core.js b/bi/core.js
index dad5b489d..8e63aed81 100644
--- a/bi/core.js
+++ b/bi/core.js
@@ -4795,8 +4795,8 @@ BI.Widget = BI.inherit(BI.OB, {
     isolate: function () {
         if (this._parent) {
             this._parent.removeWidget(this);
-            BI.DOM.hang([this]);
         }
+        BI.DOM.hang([this]);
     },
 
     empty: function () {
@@ -5649,18 +5649,6 @@ BI.View = BI.inherit(BI.V, {
         return this.model.getEditing();
     },
 
-    read: function (options) {
-        this.model.read(options)
-    },
-
-    update: function (options) {
-        this.model.update(options);
-    },
-
-    patch: function (options) {
-        this.model.patch(options);
-    },
-
     reading: function (options) {
         var self = this;
         var name = BI.UUID();
@@ -11526,8 +11514,8 @@ BI.Layout = BI.inherit(BI.Widget, {
 
     update: function (item) {
         var o = this.options;
-        var items = item.items;
-        var updated = false, i, len;
+        var items = item.items || [];
+        var updated, i, len;
         for (i = 0, len = Math.min(o.items.length, items.length); i < len; i++) {
             if (!this._compare(o.items[i], items[i])) {
                 updated = this.updateItemAt(i, items[i]) || updated;
@@ -11538,6 +11526,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             for (i = items.length; i < o.items.length; i++) {
                 deleted.push(this._children[this._getChildName(i)]);
             }
+            o.items.splice(items.length);
             BI.each(deleted, function (i, w) {
                 w.destroy();
             })
@@ -11546,7 +11535,6 @@ BI.Layout = BI.inherit(BI.Widget, {
                 this.addItemAt(i, items[i]);
             }
         }
-        this.options.items = items;
         return updated;
     },
 
@@ -11580,6 +11568,11 @@ BI.Layout = BI.inherit(BI.Widget, {
         this.options.items = [];
     },
 
+    destroy: function () {
+        BI.Layout.superclass.destroy.apply(this, arguments);
+        this.options.items = [];
+    },
+
     populate: function (items) {
         var self = this, o = this.options;
         items = items || [];
@@ -13371,7 +13364,7 @@ BI.CardLayout = BI.inherit(BI.Layout, {
                 if (!self.hasWidget(item.cardName)) {
                     var w = BI.createWidget(item);
                     w.on(BI.Events.DESTROY, function () {
-                        var index = BI.findKey(o.items, function (i, tItem) {
+                        var index = BI.findIndex(o.items, function (i, tItem) {
                             return tItem.cardName == item.cardName;
                         });
                         if (index > -1) {
@@ -13415,17 +13408,23 @@ BI.CardLayout = BI.inherit(BI.Layout, {
         return this._children[cardName];
     },
 
-    deleteCardByName: function (cardName) {
-        if (!this.isCardExisted(cardName)) {
-            throw new Error("cardName is not exist");
-        }
-        var index = BI.findKey(this.options.items, function (i, item) {
+    _deleteCardByName: function (cardName) {
+        delete this._children[cardName];
+        var index = BI.findIndex(this.options.items, function (i, item) {
             return item.cardName == cardName;
         });
         if (index > -1) {
             this.options.items.splice(index, 1);
         }
+    },
+
+    deleteCardByName: function (cardName) {
+        if (!this.isCardExisted(cardName)) {
+            throw new Error("cardName is not exist");
+        }
+
         var child = this._children[cardName];
+        this._deleteCardByName(cardName);
         child && child.destroy();
     },
 
@@ -13521,6 +13520,22 @@ BI.CardLayout = BI.inherit(BI.Layout, {
             }
         });
         return flag;
+    },
+
+    removeWidget: function (nameOrWidget) {
+        var removeName;
+        if (BI.isWidget(nameOrWidget)) {
+            BI.each(this._children, function (name, child) {
+                if (child === nameOrWidget) {
+                    removeName = name;
+                }
+            })
+        } else {
+            removeName = nameOrWidget;
+        }
+        if (removeName) {
+            this._deleteCardByName(removeName);
+        }
     }
 });
 BI.shortcut('bi.card', BI.CardLayout);/**
diff --git a/dist/base.js b/dist/base.js
index 77e869009..e5b2ba897 100644
--- a/dist/base.js
+++ b/dist/base.js
@@ -3632,6 +3632,10 @@ BI.shortcut("bi.combo_group", BI.ComboGroup);BI.VirtualGroup = BI.inherit(BI.Wid
         return this.layouts.getValue();
     },
 
+    empty: function () {
+        this.layouts.empty();
+    },
+
     populate: function (items) {
         var self = this;
         items = items || [];
diff --git a/dist/core.js b/dist/core.js
index b3875a09c..dd5cdda0a 100644
--- a/dist/core.js
+++ b/dist/core.js
@@ -14707,8 +14707,8 @@ BI.Widget = BI.inherit(BI.OB, {
     isolate: function () {
         if (this._parent) {
             this._parent.removeWidget(this);
-            BI.DOM.hang([this]);
         }
+        BI.DOM.hang([this]);
     },
 
     empty: function () {
@@ -15561,18 +15561,6 @@ BI.View = BI.inherit(BI.V, {
         return this.model.getEditing();
     },
 
-    read: function (options) {
-        this.model.read(options)
-    },
-
-    update: function (options) {
-        this.model.update(options);
-    },
-
-    patch: function (options) {
-        this.model.patch(options);
-    },
-
     reading: function (options) {
         var self = this;
         var name = BI.UUID();
@@ -19659,8 +19647,8 @@ BI.Layout = BI.inherit(BI.Widget, {
 
     update: function (item) {
         var o = this.options;
-        var items = item.items;
-        var updated = false, i, len;
+        var items = item.items || [];
+        var updated, i, len;
         for (i = 0, len = Math.min(o.items.length, items.length); i < len; i++) {
             if (!this._compare(o.items[i], items[i])) {
                 updated = this.updateItemAt(i, items[i]) || updated;
@@ -19671,6 +19659,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             for (i = items.length; i < o.items.length; i++) {
                 deleted.push(this._children[this._getChildName(i)]);
             }
+            o.items.splice(items.length);
             BI.each(deleted, function (i, w) {
                 w.destroy();
             })
@@ -19679,7 +19668,6 @@ BI.Layout = BI.inherit(BI.Widget, {
                 this.addItemAt(i, items[i]);
             }
         }
-        this.options.items = items;
         return updated;
     },
 
@@ -19713,6 +19701,11 @@ BI.Layout = BI.inherit(BI.Widget, {
         this.options.items = [];
     },
 
+    destroy: function () {
+        BI.Layout.superclass.destroy.apply(this, arguments);
+        this.options.items = [];
+    },
+
     populate: function (items) {
         var self = this, o = this.options;
         items = items || [];
@@ -26785,7 +26778,7 @@ BI.CardLayout = BI.inherit(BI.Layout, {
                 if (!self.hasWidget(item.cardName)) {
                     var w = BI.createWidget(item);
                     w.on(BI.Events.DESTROY, function () {
-                        var index = BI.findKey(o.items, function (i, tItem) {
+                        var index = BI.findIndex(o.items, function (i, tItem) {
                             return tItem.cardName == item.cardName;
                         });
                         if (index > -1) {
@@ -26829,17 +26822,23 @@ BI.CardLayout = BI.inherit(BI.Layout, {
         return this._children[cardName];
     },
 
-    deleteCardByName: function (cardName) {
-        if (!this.isCardExisted(cardName)) {
-            throw new Error("cardName is not exist");
-        }
-        var index = BI.findKey(this.options.items, function (i, item) {
+    _deleteCardByName: function (cardName) {
+        delete this._children[cardName];
+        var index = BI.findIndex(this.options.items, function (i, item) {
             return item.cardName == cardName;
         });
         if (index > -1) {
             this.options.items.splice(index, 1);
         }
+    },
+
+    deleteCardByName: function (cardName) {
+        if (!this.isCardExisted(cardName)) {
+            throw new Error("cardName is not exist");
+        }
+
         var child = this._children[cardName];
+        this._deleteCardByName(cardName);
         child && child.destroy();
     },
 
@@ -26935,6 +26934,22 @@ BI.CardLayout = BI.inherit(BI.Layout, {
             }
         });
         return flag;
+    },
+
+    removeWidget: function (nameOrWidget) {
+        var removeName;
+        if (BI.isWidget(nameOrWidget)) {
+            BI.each(this._children, function (name, child) {
+                if (child === nameOrWidget) {
+                    removeName = name;
+                }
+            })
+        } else {
+            removeName = nameOrWidget;
+        }
+        if (removeName) {
+            this._deleteCardByName(removeName);
+        }
     }
 });
 BI.shortcut('bi.card', BI.CardLayout);/**
diff --git a/src/base/combination/group.virtual.js b/src/base/combination/group.virtual.js
index 48ebdcb10..5ffe00d42 100644
--- a/src/base/combination/group.virtual.js
+++ b/src/base/combination/group.virtual.js
@@ -63,6 +63,10 @@ BI.VirtualGroup = BI.inherit(BI.Widget, {
         return this.layouts.getValue();
     },
 
+    empty: function () {
+        this.layouts.empty();
+    },
+
     populate: function (items) {
         var self = this;
         items = items || [];
diff --git a/src/core/view.js b/src/core/view.js
index 5dcab2c4f..baac6b554 100644
--- a/src/core/view.js
+++ b/src/core/view.js
@@ -369,18 +369,6 @@ BI.View = BI.inherit(BI.V, {
         return this.model.getEditing();
     },
 
-    read: function (options) {
-        this.model.read(options)
-    },
-
-    update: function (options) {
-        this.model.update(options);
-    },
-
-    patch: function (options) {
-        this.model.patch(options);
-    },
-
     reading: function (options) {
         var self = this;
         var name = BI.UUID();
diff --git a/src/core/widget.js b/src/core/widget.js
index dcc30ec9d..7c478c31d 100644
--- a/src/core/widget.js
+++ b/src/core/widget.js
@@ -372,8 +372,8 @@ BI.Widget = BI.inherit(BI.OB, {
     isolate: function () {
         if (this._parent) {
             this._parent.removeWidget(this);
-            BI.DOM.hang([this]);
         }
+        BI.DOM.hang([this]);
     },
 
     empty: function () {
diff --git a/src/core/wrapper/layout.js b/src/core/wrapper/layout.js
index 5a4a6931f..f4f76a5c0 100644
--- a/src/core/wrapper/layout.js
+++ b/src/core/wrapper/layout.js
@@ -327,8 +327,8 @@ BI.Layout = BI.inherit(BI.Widget, {
 
     update: function (item) {
         var o = this.options;
-        var items = item.items;
-        var updated = false, i, len;
+        var items = item.items || [];
+        var updated, i, len;
         for (i = 0, len = Math.min(o.items.length, items.length); i < len; i++) {
             if (!this._compare(o.items[i], items[i])) {
                 updated = this.updateItemAt(i, items[i]) || updated;
@@ -339,6 +339,7 @@ BI.Layout = BI.inherit(BI.Widget, {
             for (i = items.length; i < o.items.length; i++) {
                 deleted.push(this._children[this._getChildName(i)]);
             }
+            o.items.splice(items.length);
             BI.each(deleted, function (i, w) {
                 w.destroy();
             })
@@ -347,7 +348,6 @@ BI.Layout = BI.inherit(BI.Widget, {
                 this.addItemAt(i, items[i]);
             }
         }
-        this.options.items = items;
         return updated;
     },
 
@@ -381,6 +381,11 @@ BI.Layout = BI.inherit(BI.Widget, {
         this.options.items = [];
     },
 
+    destroy: function () {
+        BI.Layout.superclass.destroy.apply(this, arguments);
+        this.options.items = [];
+    },
+
     populate: function (items) {
         var self = this, o = this.options;
         items = items || [];
diff --git a/src/core/wrapper/layout/layout.card.js b/src/core/wrapper/layout/layout.card.js
index 9711da9e2..73d466dbc 100644
--- a/src/core/wrapper/layout/layout.card.js
+++ b/src/core/wrapper/layout/layout.card.js
@@ -30,7 +30,7 @@ BI.CardLayout = BI.inherit(BI.Layout, {
                 if (!self.hasWidget(item.cardName)) {
                     var w = BI.createWidget(item);
                     w.on(BI.Events.DESTROY, function () {
-                        var index = BI.findKey(o.items, function (i, tItem) {
+                        var index = BI.findIndex(o.items, function (i, tItem) {
                             return tItem.cardName == item.cardName;
                         });
                         if (index > -1) {
@@ -74,17 +74,23 @@ BI.CardLayout = BI.inherit(BI.Layout, {
         return this._children[cardName];
     },
 
-    deleteCardByName: function (cardName) {
-        if (!this.isCardExisted(cardName)) {
-            throw new Error("cardName is not exist");
-        }
-        var index = BI.findKey(this.options.items, function (i, item) {
+    _deleteCardByName: function (cardName) {
+        delete this._children[cardName];
+        var index = BI.findIndex(this.options.items, function (i, item) {
             return item.cardName == cardName;
         });
         if (index > -1) {
             this.options.items.splice(index, 1);
         }
+    },
+
+    deleteCardByName: function (cardName) {
+        if (!this.isCardExisted(cardName)) {
+            throw new Error("cardName is not exist");
+        }
+
         var child = this._children[cardName];
+        this._deleteCardByName(cardName);
         child && child.destroy();
     },
 
@@ -180,6 +186,22 @@ BI.CardLayout = BI.inherit(BI.Layout, {
             }
         });
         return flag;
+    },
+
+    removeWidget: function (nameOrWidget) {
+        var removeName;
+        if (BI.isWidget(nameOrWidget)) {
+            BI.each(this._children, function (name, child) {
+                if (child === nameOrWidget) {
+                    removeName = name;
+                }
+            })
+        } else {
+            removeName = nameOrWidget;
+        }
+        if (removeName) {
+            this._deleteCardByName(removeName);
+        }
     }
 });
 BI.shortcut('bi.card', BI.CardLayout);
\ No newline at end of file