[improvement] Picker: shared props (#2888)

packages/picker/index.js

@@ -1,16 +1,15 @@
 import { use } from '../utils';
 import { prevent } from '../utils/event';
 import { deepClone } from '../utils/deep-clone';
-import { PickerMixin } from '../mixins/picker';
+import { pickerProps } from './shared';
 import Loading from '../loading';
 import PickerColumn from './PickerColumn';
 
 const [sfc, bem, t] = use('picker');
 
 export default sfc({
-  mixins: [PickerMixin],
-
   props: {
+    ...pickerProps,
     columns: Array,
     valueKey: {
       type: String,

packages/picker/shared.ts

@@ -0,0 +1,25 @@
+export type SharedPickerProps = {
+  title?: string;
+  loading?: boolean;
+  itemHeight: number;
+  showToolbar?: boolean;
+  visibleItemCount: number;
+  cancelButtonText?: string;
+  confirmButtonText?: string;
+}
+
+export const pickerProps = {
+  title: String,
+  loading: Boolean,
+  showToolbar: Boolean,
+  cancelButtonText: String,
+  confirmButtonText: String,
+  visibleItemCount: {
+    type: Number,
+    default: 5
+  },
+  itemHeight: {
+    type: Number,
+    default: 44
+  }
+};