fix: update device tree

packages/DeviceTree/src/demos/Basic.tsx

@@ -79,18 +79,20 @@ const Demo = () => {
   };
 
   return (
-    <PandaDeviceTree
-      onSearch={onSearch}
-      checkable
-      onExpand={onExpand}
-      expandedKeys={expandedKeys}
-      autoExpandParent={autoExpandParent}
-      onCheck={onCheck}
-      checkedKeys={checkedKeys}
-      onSelect={onSelect}
-      selectedKeys={selectedKeys}
-      treeData={treeData}
-    />
+    <div style={{ width: '300px', height: '400px', border: '1px solid #eee' }}>
+      <PandaDeviceTree
+        onSearch={onSearch}
+        checkable
+        onExpand={onExpand}
+        expandedKeys={expandedKeys}
+        autoExpandParent={autoExpandParent}
+        onCheck={onCheck}
+        checkedKeys={checkedKeys}
+        onSelect={onSelect}
+        selectedKeys={selectedKeys}
+        treeData={treeData}
+      />
+    </div>
   );
 };
 

packages/DeviceTree/src/index.js

@@ -22,8 +22,10 @@ const DeviceTree = (props) => {
         onPressEnter={onSearch}
       />
       <Divider />
-      {!!treeData.length && <Tree {...props} />}
-      {!treeData.length && <Empty />}
+      <div className={classNames(`${prefixCls}-content`)}>
+        {!!treeData.length && <Tree {...props} />}
+        {!treeData.length && <Empty />}
+      </div>
     </div>
   );
 };

packages/DeviceTree/src/index.less

@@ -2,9 +2,18 @@
 @device-tree-prefix-cls: ~'@{ant-prefix}-device-tree';
 
 .@{device-tree-prefix-cls} {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  height: 100%;
   padding: 5px;
 
   .ant-divider {
     margin: 6px 0 12px 0;
   }
+
+  &-content {
+    flex: 1;
+    overflow-y: scroll;
+  }
 }