fix carton

lib/pages/processing/processing_editor.dart

@@ -62,11 +62,11 @@ class _ProcesingEditorState extends State<ProcesingEditor> {
         )),
         IconButton(
             icon: Icon(Icons.search, color: primaryColor),
-            onPressed: () => searchUser(context, callbackUserSelect: (u) {
+            onPressed: () => searchUser(context, onUserSelect: (u) {
                   setState(() {
                     this.consignee = u;
                   });
-                })),
+                }, popPage: true)),
       ],
     );
 
@@ -104,11 +104,11 @@ class _ProcesingEditorState extends State<ProcesingEditor> {
         )),
         IconButton(
             icon: Icon(Icons.search, color: primaryColor),
-            onPressed: () => searchUser(context, callbackUserSelect: (u) {
+            onPressed: () => searchUser(context, onUserSelect: (u) {
                   setState(() {
                     this.sender = u;
                   });
-                })),
+                }, popPage: true)),
       ],
     );
 
@@ -148,7 +148,8 @@ class _ProcesingEditorState extends State<ProcesingEditor> {
               ),
               onPressed: () async {
                 if (this.consignee == null) {
-                  showMsgDialog(context, "Warning", "Please select 'Consignee'");
+                  showMsgDialog(
+                      context, "Warning", "Please select 'Consignee'");
                   return;
                 }
                 Package _package = await Navigator.push<Package>(
@@ -181,13 +182,7 @@ class _ProcesingEditorState extends State<ProcesingEditor> {
               icon:
                   new Icon(CupertinoIcons.back, color: primaryColor, size: 30),
               onPressed: () {
-                if (isDataChanged()) {
-                  showConfirmDialog(context, "back.button_confirm", () {
-                    Navigator.of(context).pop();
-                  });
-                } else {
-                  Navigator.of(context).pop();
-                }
+                Navigator.of(context).pop();
               },
             ),
             shadowColor: Colors.transparent,
@@ -290,16 +285,4 @@ class _ProcesingEditorState extends State<ProcesingEditor> {
       });
     }
   }
-
-  isDataChanged() {
-    if (_isNew) {
-      return this.packages.isNotEmpty || consignee != null || sender != null;
-    } else {
-      Processing _processing = Processing(
-          userID: consignee.fcsID,
-          fcsID: sender.fcsID,
-          packages: this.packages);
-      return widget.processing.isChangedForEdit(_processing);
-    }
-  }
 }