opt: multiSelect (#935)

lib/pages/history_search/view.dart

@@ -1,3 +1,4 @@
+import 'package:PiliPlus/common/widgets/appbar/appbar.dart';
 import 'package:PiliPlus/models_new/history/data.dart';
 import 'package:PiliPlus/models_new/history/list.dart';
 import 'package:PiliPlus/pages/common/common_search_page.dart';
@@ -28,6 +29,31 @@ class _HistorySearchPageState
     tag: Utils.generateRandomString(8),
   );
 
+  @override
+  Widget build(BuildContext context) {
+    // TODO: refa
+    return Obx(() {
+      final parent = super.build(context) as Scaffold;
+      final enableMultiSelect = controller.enableMultiSelect.value;
+      return PopScope(
+        canPop: !enableMultiSelect,
+        onPopInvokedWithResult: (didPop, result) {
+          if (enableMultiSelect) {
+            controller.handleSelect();
+          }
+        },
+        child: Scaffold(
+          resizeToAvoidBottomInset: parent.resizeToAvoidBottomInset,
+          appBar: MultiSelectAppBarWidget(
+            ctr: controller,
+            child: parent.appBar as AppBar,
+          ),
+          body: parent.body,
+        ),
+      );
+    });
+  }
+
   @override
   Widget buildList(List<HistoryItemModel> list) {
     return SliverGrid(
@@ -42,10 +68,8 @@ class _HistorySearchPageState
           return HistoryItem(
             item: item,
             ctr: controller,
-            onChoose: null,
-            onDelete: (kid, business) {
-              controller.onDelHistory(index, kid, business);
-            },
+            onDelete: (kid, business) =>
+                controller.onDelHistory(index, kid, business),
           );
         },
       ),