diff --git a/bi/case.js b/bi/case.js
index 4b90d1a05..ecfa47fc6 100644
--- a/bi/case.js
+++ b/bi/case.js
@@ -3592,6 +3592,10 @@ BI.BubbleCombo = BI.inherit(BI.Widget, {
 
     showView: function () {
         this.combo && this.combo.showView();
+    },
+
+    hasView: function () {
+        return BI.isNotNull(this.combo.getView());
     }
 });
 
diff --git a/bi/widget.css b/bi/widget.css
index 9f860380b..ee9212fb3 100644
--- a/bi/widget.css
+++ b/bi/widget.css
@@ -397,6 +397,14 @@
 /****添加计算宽度的--运算符直接需要space****/
 /****** common color(常用颜色,可用于普遍场景) *****/
 /**** custom color(自定义颜色,用于特定场景) ****/
+.bi-preview-table {
+  -webkit-user-select: initial;
+  -khtml-user-select: initial;
+  -moz-user-select: initial;
+  -ms-user-select: initial;
+  -o-user-select: initial;
+  user-select: initial;
+}
 .bi-preview-table > div > table > thead > tr.odd,
 .bi-preview-table > div > div > div > table > thead > tr.odd {
   background-color: #eff1f4;
diff --git a/docs/case.js b/docs/case.js
index 4b90d1a05..ecfa47fc6 100644
--- a/docs/case.js
+++ b/docs/case.js
@@ -3592,6 +3592,10 @@ BI.BubbleCombo = BI.inherit(BI.Widget, {
 
     showView: function () {
         this.combo && this.combo.showView();
+    },
+
+    hasView: function () {
+        return BI.isNotNull(this.combo.getView());
     }
 });
 
diff --git a/docs/widget.css b/docs/widget.css
index 9f860380b..ee9212fb3 100644
--- a/docs/widget.css
+++ b/docs/widget.css
@@ -397,6 +397,14 @@
 /****添加计算宽度的--运算符直接需要space****/
 /****** common color(常用颜色,可用于普遍场景) *****/
 /**** custom color(自定义颜色,用于特定场景) ****/
+.bi-preview-table {
+  -webkit-user-select: initial;
+  -khtml-user-select: initial;
+  -moz-user-select: initial;
+  -ms-user-select: initial;
+  -o-user-select: initial;
+  user-select: initial;
+}
 .bi-preview-table > div > table > thead > tr.odd,
 .bi-preview-table > div > div > div > table > thead > tr.odd {
   background-color: #eff1f4;
diff --git a/src/case/combo/bubblecombo/combo.bubble.js b/src/case/combo/bubblecombo/combo.bubble.js
index a725567aa..7da74e5ca 100644
--- a/src/case/combo/bubblecombo/combo.bubble.js
+++ b/src/case/combo/bubblecombo/combo.bubble.js
@@ -193,6 +193,10 @@ BI.BubbleCombo = BI.inherit(BI.Widget, {
 
     showView: function () {
         this.combo && this.combo.showView();
+    },
+
+    hasView: function () {
+        return BI.isNotNull(this.combo.getView());
     }
 });
 
diff --git a/src/css/widget/previewtable/previewtable.css b/src/css/widget/previewtable/previewtable.css
index 3a12fc376..676a963ad 100644
--- a/src/css/widget/previewtable/previewtable.css
+++ b/src/css/widget/previewtable/previewtable.css
@@ -1,6 +1,14 @@
 /****添加计算宽度的--运算符直接需要space****/
 /****** common color(常用颜色,可用于普遍场景) *****/
 /**** custom color(自定义颜色,用于特定场景) ****/
+.bi-preview-table {
+  -webkit-user-select: initial;
+  -khtml-user-select: initial;
+  -moz-user-select: initial;
+  -ms-user-select: initial;
+  -o-user-select: initial;
+  user-select: initial;
+}
 .bi-preview-table > div > table > thead > tr.odd,
 .bi-preview-table > div > div > div > table > thead > tr.odd {
   background-color: #eff1f4;
diff --git a/src/less/widget/previewtable/previewtable.less b/src/less/widget/previewtable/previewtable.less
index a79308804..b5a5fdee5 100644
--- a/src/less/widget/previewtable/previewtable.less
+++ b/src/less/widget/previewtable/previewtable.less
@@ -1,6 +1,7 @@
 @import "../../bibase";
 
 .bi-preview-table {
+  .user-select(initial);
   & > div > table, & > div > div > div > table {
     & > thead > tr.odd {
       background-color: @color-bi-background-normal;