Add basic mechanism for manager override, use for void txn

wuttapos/controls/loginform.py

@@ -87,7 +87,7 @@ class WuttaLoginForm(WuttaControl):
                 ft.Row(),
                 ft.Row(),
                 WuttaKeyboard(self.config, on_keypress=self.keyboard_keypress,
-                              on_long_backspace=self.long_backspace),
+                              on_long_backspace=self.keyboard_long_backspace),
             ]
 
         return ft.Column(controls=controls,
@@ -245,15 +245,12 @@ class WuttaLoginForm(WuttaControl):
             else:
                 if self.on_authz_failure:
                     self.on_authz_failure(user, user_display)
-
                 self.clear_login()
 
         else:
             if self.on_login_failure:
                 self.on_login_failure(e)
-
+            self.clear_login()
-            self.password.focus()
-            self.update()
 
         return False
 

wuttapos/controls/tenkey.py

@@ -118,7 +118,6 @@ class WuttaTenkeyMenu(WuttaControl):
             self,
             text,
             font_size=None,
-            bgcolor='green',
             height=None,
             width=None,
             on_click=None,
@@ -133,7 +132,7 @@ class WuttaTenkeyMenu(WuttaControl):
         if not on_click:
             on_click = self.tenkey_click
 
-        return self.make_button(text, font_size=font_size,  bgcolor=bgcolor,
+        return self.make_button(text, font_size=font_size,  bgcolor='green',
                                 height=height, width=width,
                                 on_click=on_click,
                                 on_long_press=on_long_press)

wuttapos/views/base.py

@@ -89,7 +89,7 @@ class WuttaView(ft.View):
 
     def show_snackbar(self, text, bgcolor='yellow'):
         self.page.snack_bar = ft.SnackBar(ft.Text(text, color='black',
-                                                  size=20,
+                                                  size=40,
                                                   weight=ft.FontWeight.BOLD),
                                           bgcolor=bgcolor,
                                           duration=1500)

wuttapos/views/pos.py

@@ -31,6 +31,7 @@ import time
 import flet as ft
 
 from .base import WuttaView
+from wuttapos.controls.loginform import WuttaLoginForm
 from wuttapos.controls.custlookup import WuttaCustomerLookup
 from wuttapos.controls.itemlookup import WuttaProductLookup
 from wuttapos.controls.txnitem import WuttaTxnItem
@@ -98,13 +99,7 @@ class POSView(WuttaView):
         self.page.session.set('cust_display', handler.get_screen_cust_display(customer=customer))
         self.informed_refresh()
 
-        self.page.snack_bar = ft.SnackBar(ft.Text(f"CUSTOMER SET: {customer}",
+        self.show_snackbar(f"CUSTOMER SET: {customer}", bgcolor='green')
-                                                  color='black',
-                                                  size=20,
-                                                  weight=ft.FontWeight.BOLD),
-                                          bgcolor='green',
-                                          duration=1500)
-        self.page.snack_bar.open = True
 
     def item_click(self, e):
 
@@ -156,13 +151,7 @@ class POSView(WuttaView):
             if record_badscan:
                 handler.record_badscan(batch, entry, quantity=quantity, user=user)
 
-            self.page.snack_bar = ft.SnackBar(ft.Text(f"PRODUCT NOT FOUND: {entry}",
+            self.show_snackbar(f"PRODUCT NOT FOUND: {entry}", bgcolor='yellow')
-                                                      color='black',
-                                                      size=20,
-                                                      weight=ft.FontWeight.BOLD),
-                                              bgcolor='yellow',
-                                              duration=1500)
-            self.page.snack_bar.open = True
 
         session.commit()
         session.close()
@@ -228,13 +217,7 @@ class POSView(WuttaView):
             customer = clientele.locate_customer_for_entry(session, entry)
             if not customer:
                 session.close()
-                self.page.snack_bar = ft.SnackBar(ft.Text(f"CUSTOMER NOT FOUND: {entry}",
+                self.show_snackbar(f"CUSTOMER NOT FOUND: {entry}", bgcolor='yellow')
-                                                          color='black',
-                                                          size=20,
-                                                          weight=ft.FontWeight.BOLD),
-                                                  bgcolor='yellow',
-                                                  duration=1500)
-                self.page.snack_bar.open = True
                 self.page.update()
                 return
 
@@ -401,13 +384,7 @@ class POSView(WuttaView):
             self.informed_refresh()
 
             dlg.open = False
-            self.page.snack_bar = ft.SnackBar(ft.Text("CUSTOMER REMOVED",
+            self.show_snackbar("CUSTOMER REMOVED", bgcolor='yellow')
-                                                      color='black',
-                                                      size=20,
-                                                      weight=ft.FontWeight.BOLD),
-                                              bgcolor='yellow',
-                                              duration=1500)
-            self.page.snack_bar.open = True
             self.reset()
 
         def cancel(e):
@@ -454,13 +431,7 @@ class POSView(WuttaView):
             self.reset()
 
         else: # customer not found
-            self.page.snack_bar = ft.SnackBar(ft.Text(f"CUSTOMER NOT FOUND: {entry}",
+            self.show_snackbar(f"CUSTOMER NOT FOUND: {entry}", bgcolor='yellow')
-                                                      color='black',
-                                                      size=20,
-                                                      weight=ft.FontWeight.BOLD),
-                                              bgcolor='yellow',
-                                              duration=1500)
-            self.page.snack_bar.open = True
             # TODO: should use reset() here?
             self.main_input.focus()
             self.page.update()
@@ -494,13 +465,7 @@ class POSView(WuttaView):
 
             if self.set_quantity.data is not None:
                 quantity = self.set_quantity.data
-                self.page.snack_bar = ft.SnackBar(ft.Text(f"QUANTITY ALREADY SET: {quantity}",
+                self.show_snackbar(f"QUANTITY ALREADY SET: {quantity}", bgcolor='yellow')
-                                                          color='black',
-                                                          size=20,
-                                                          weight=ft.FontWeight.BOLD),
-                                                  bgcolor='yellow',
-                                                  duration=1500)
-                self.page.snack_bar.open = True
 
             else:
                 try:
@@ -516,13 +481,7 @@ class POSView(WuttaView):
                     self.main_input.focus()
 
                 else:
-                    self.page.snack_bar = ft.SnackBar(ft.Text(f"INVALID @ QUANTITY: {quantity}",
+                    self.show_snackbar(f"INVALID @ QUANTITY: {quantity}", bgcolor='yellow')
-                                                              color='black',
-                                                              size=20,
-                                                              weight=ft.FontWeight.BOLD),
-                                                      bgcolor='yellow',
-                                                      duration=1500)
-                    self.page.snack_bar.open = True
 
             self.page.update()
 
@@ -854,12 +813,7 @@ class POSView(WuttaView):
             feature = e.control.content.value.replace('\n', ' ')
         if feature:
             text += f": {feature}"
-        self.page.snack_bar = ft.SnackBar(ft.Text(text, color='black',
+        self.show_snackbar(text, bgcolor='yellow')
-                                                  size=20,
-                                                  weight=ft.FontWeight.BOLD),
-                                          bgcolor='yellow',
-                                          duration=1500)
-        self.page.snack_bar.open = True
         self.page.update()
 
     def adjust_price_click(self, e):
@@ -1033,65 +987,78 @@ class POSView(WuttaView):
         self.selected_item.bgcolor = 'blue'
         self.page.update()
 
+    def authorized_action(self, perm, action, cancel=None, message=None):
+        auth = self.app.get_auth_handler()
+
+        # current user is assumed if they have the perm
+        session = self.app.make_session()
+        user = self.get_current_user(session)
+        has_perm = auth.has_permission(session, user, perm)
+        session.expunge(user)
+        session.close()
+        if has_perm:
+            action(user)
+            return
+
+        # otherwise must prompt for different user credentials...
+
+        def login_cancel(e):
+            dlg.open = False
+            if cancel:
+                cancel()
+            self.reset()
+
+        def login_failure(e):
+            self.show_snackbar("Login failed", bgcolor='yellow')
+            self.page.update()
+
+        def authz_failure(user, user_display):
+            self.show_snackbar(f"User does not have permission: {user_display}",
+                               bgcolor='yellow')
+            self.page.update()
+
+        def login_success(user, user_display):
+            dlg.open = False
+            self.page.update()
+
+            # # nb. just in case?
+            # # cf. https://github.com/flet-dev/flet/issues/1670
+            # time.sleep(0.1)
+
+            action(user)
+            self.reset()
+
+        title = "Manager Override"
+        if message:
+            title = f"{title} - {message}"
+
+        dlg = ft.AlertDialog(
+            modal=True,
+            title=ft.Text(title),
+            content=ft.Container(
+                ft.Column(
+                    [
+                        ft.Divider(),
+                        WuttaLoginForm(self.config,
+                                       perm_required=perm,
+                                       on_login_success=login_success,
+                                       on_login_failure=login_failure,
+                                       on_authz_failure=authz_failure),
+                    ],
+                ),
+                height=600,
+            ),
+            actions=[
+                self.make_button("Cancel", on_click=login_cancel,
+                                 height=80, width=120),
+            ],
+        )
+
+        self.page.dialog = dlg
+        dlg.open = True
+        self.page.update()
+
     def void_click(self, e):
-
-        def confirm(e):
-            dlg.open = False
-
-            session = self.app.make_session()
-            handler = self.get_batch_handler()
-            user = self.get_current_user(session)
-            batch = handler.get_current_batch(user, create=True)
-
-            if self.selected_item:
-
-                # void line
-                row = self.selected_item.data['row']
-                if row.void:
-                    # cannot void an already void line
-                    self.page.snack_bar = ft.SnackBar(ft.Text("LINE ALREADY VOID",
-                                                              color='black',
-                                                              size=20,
-                                                              weight=ft.FontWeight.BOLD),
-                                                      bgcolor='yellow',
-                                                      duration=1500)
-                    self.page.snack_bar.open = True
-
-                elif row.row_type != self.enum.POS_ROW_TYPE_SELL:
-                    # cannot void line unless of type 'sell'
-                    self.page.snack_bar = ft.SnackBar(ft.Text("LINE DOES NOT ALLOW VOID",
-                                                              color='black',
-                                                              size=20,
-                                                              weight=ft.FontWeight.BOLD),
-                                                      bgcolor='yellow',
-                                                      duration=1500)
-                    self.page.snack_bar.open = True
-
-                else:
-                    # okay, void the line
-                    row = session.get(row.__class__, row.uuid)
-                    handler.void_row(row, user)
-                    self.selected_item.data['row'] = row
-                    self.selected_item.content.row = row
-                    self.selected_item.content.refresh()
-                    self.clear_item_selection()
-
-                    # update screen to reflect new balance
-                    self.txn_total.value = self.app.render_currency(batch.get_balance())
-
-            else:
-                # void txn
-                handler.void_batch(batch, user)
-                self.clear_all()
-
-            session.commit()
-            session.close()
-            self.reset()
-
-        def cancel(e):
-            dlg.open = False
-            self.reset()
-
         session = self.app.make_session()
         batch = self.get_current_batch(session, create=False)
         session.close()
@@ -1102,36 +1069,89 @@ class POSView(WuttaView):
             self.reset()
             return
 
+        def confirm(e):
+            dlg.open = False
+            self.page.update()
+
+            if self.selected_item:
+
+                session = self.app.make_session()
+                handler = self.get_batch_handler()
+                user = self.get_current_user(session)
+
+                # void line
+                row = self.selected_item.data['row']
+                if row.void:
+                    # cannot void an already void line
+                    self.show_snackbar("LINE ALREADY VOID", bgcolor='yellow')
+
+                elif row.row_type != self.enum.POS_ROW_TYPE_SELL:
+                    # cannot void line unless of type 'sell'
+                    self.show_snackbar("LINE DOES NOT ALLOW VOID", bgcolor='yellow')
+
+                else:
+                    # okay, void the line
+                    row = session.get(row.__class__, row.uuid)
+                    handler.void_row(row, user)
+                    session.commit()
+
+                    # refresh display
+                    self.selected_item.data['row'] = row
+                    self.selected_item.content.row = row
+                    self.selected_item.content.refresh()
+                    self.clear_item_selection()
+                    self.txn_total.value = self.app.render_currency(row.batch.get_balance())
+
+                session.close()
+                self.reset()
+
+            else: # void txn
+
+                # nb. do this just in case we must show login dialog
+                # cf. https://github.com/flet-dev/flet/issues/1670
+                time.sleep(0.1)
+
+                self.authorized_action('pos.void_txn', self.void_transaction,
+                                       message="Void Transaction")
+
+        def cancel(e):
+            dlg.open = False
+            self.reset()
+
+        # prompt to void something
+        target = 'LINE' if self.selected_item else 'TXN'
         dlg = ft.AlertDialog(
             title=ft.Text("Confirm VOID"),
-            content=ft.Text("Really VOID this transaction?"),
+            content=ft.Text(f"Really VOID {target}?"),
             actions=[
-                ft.Container(content=ft.Text("Yes, VOID",
+                self.make_button(f"VOID {target}", font_size=self.default_font_size,
-                                             size=self.default_font_size,
+                                 height=self.default_button_size,
-                                             color='black',
+                                 width=self.default_button_size * 2.5,
-                                             weight=ft.FontWeight.BOLD),
+                                 bgcolor='red',
-                             height=self.default_button_size,
+                                 on_click=confirm),
-                             width=self.default_button_size * 2.5,
+                self.make_button("Cancel", font_size=self.default_font_size,
-                             alignment=ft.alignment.center,
+                                 height=self.default_button_size,
-                             bgcolor='red',
+                                 width=self.default_button_size * 2.5,
-                             border=ft.border.all(1, 'black'),
+                                 on_click=cancel),
-                             border_radius=ft.border_radius.all(5),
-                             on_click=confirm),
-                ft.Container(content=ft.Text("Cancel",
-                                             size=self.default_font_size,
-                                             weight=ft.FontWeight.BOLD),
-                             height=self.default_button_size,
-                             width=self.default_button_size * 2.5,
-                             alignment=ft.alignment.center,
-                             border=ft.border.all(1, 'black'),
-                             border_radius=ft.border_radius.all(5),
-                             on_click=cancel),
             ])
 
         self.page.dialog = dlg
         dlg.open = True
         self.page.update()
 
+    def void_transaction(self, user):
+        session = self.app.make_session()
+        batch = self.get_current_batch(session)
+        user = session.get(user.__class__, user.uuid)
+        handler = self.get_batch_handler()
+
+        handler.void_batch(batch, user)
+
+        session.commit()
+        session.close()
+        self.clear_all()
+        self.reset()
+
     def tender_click(self, e):
         session = self.app.make_session()
         handler = self.get_batch_handler()
@@ -1143,39 +1163,21 @@ class POSView(WuttaView):
         # nothing to do if no transaction
         if not batch:
             session.close()
-            self.page.snack_bar = ft.SnackBar(ft.Text("NO TRANSACTION",
+            self.show_snackbar("NO TRANSACTION", bgcolor='yellow')
-                                                      color='black',
-                                                      size=20,
-                                                      weight=ft.FontWeight.BOLD),
-                                              bgcolor='yellow',
-                                              duration=1500)
-            self.page.snack_bar.open = True
             self.reset()
             return
 
         # nothing to do if zero sales
         if not batch.get_balance():
             session.close()
-            self.page.snack_bar = ft.SnackBar(ft.Text("NO SALES",
+            self.show_snackbar("NO SALES", bgcolor='yellow')
-                                                      color='black',
-                                                      size=20,
-                                                      weight=ft.FontWeight.BOLD),
-                                              bgcolor='yellow',
-                                              duration=1500)
-            self.page.snack_bar.open = True
             self.reset()
             return
 
         # nothing to do if no amount provided
         if not self.main_input.value:
             session.close()
-            self.page.snack_bar = ft.SnackBar(ft.Text("MUST SPECIFY AMOUNT",
+            self.show_snackbar("MUST SPECIFY AMOUNT", bgcolor='yellow')
-                                                      color='black',
-                                                      size=20,
-                                                      weight=ft.FontWeight.BOLD),
-                                              bgcolor='yellow',
-                                              duration=1500)
-            self.page.snack_bar.open = True
             self.reset()
             return
 
@@ -1184,26 +1186,16 @@ class POSView(WuttaView):
             amount = decimal.Decimal(self.main_input.value)
         except:
             session.close()
-            self.page.snack_bar = ft.SnackBar(ft.Text(f"AMOUNT NOT VALID: {self.main_input.value}",
+            self.show_snackbar(f"AMOUNT NOT VALID: {self.main_input.value}",
-                                                      color='black',
+                               bgcolor='yellow')
-                                                      size=20,
-                                                      weight=ft.FontWeight.BOLD),
-                                              bgcolor='yellow',
-                                              duration=1500)
-            self.page.snack_bar.open = True
             self.reset()
             return
 
         # do nothing if @ quantity present
         if self.set_quantity.data:
             session.close()
-            self.page.snack_bar = ft.SnackBar(ft.Text(f"QUANTITY NOT ALLOWED FOR TENDER: {self.set_quantity.value}",
+            self.show_snackbar(f"QUANTITY NOT ALLOWED FOR TENDER: {self.set_quantity.value}",
-                                                      color='black',
+                               bgcolor='yellow')
-                                                      size=20,
-                                                      weight=ft.FontWeight.BOLD),
-                                              bgcolor='yellow',
-                                              duration=1500)
-            self.page.snack_bar.open = True
             self.reset()
             return
 
@@ -1223,13 +1215,7 @@ class POSView(WuttaView):
             session.rollback()
             log.exception("failed to apply tender '%s' for %s in batch %s",
                           code, amount, batch.id_str)
-            self.page.snack_bar = ft.SnackBar(ft.Text(f"ERROR: {error}",
+            self.show_snackbar(f"ERROR: {error}", bgcolor='red')
-                                                      color='black',
-                                                      size=20,
-                                                      weight=ft.FontWeight.BOLD),
-                                              bgcolor='red',
-                                              duration=1500)
-            self.page.snack_bar.open = True
 
         else:
             session.commit()
@@ -1257,10 +1243,10 @@ class POSView(WuttaView):
                         ft.Container(
                             ft.Column(
                                 [
-                                    ft.Text("Change Back", size=24,
+                                    ft.Text("Change Due", size=24,
                                             weight=ft.FontWeight.BOLD),
                                     ft.Divider(),
-                                    ft.Text("Please give customer change back:",
+                                    ft.Text("Please give customer their change:",
                                             size=20),
                                     ft.Text(self.app.render_currency(last_row.tender_total),
                                             size=32, weight=ft.FontWeight.BOLD),