Add the "About" dialog and move feedback button there

wuttapos/controls/base.py

@@ -30,9 +30,14 @@ import flet as ft
 class WuttaControl(ft.UserControl):
 
     def __init__(self, config, *args, **kwargs):
+        self.on_reset = kwargs.pop('on_reset', None)
         super().__init__(*args, **kwargs)
         self.config = config
         self.app = config.get_app()
 
     def informed_refresh(self, **kwargs):
         pass
+
+    def reset(self, e=None):
+        if self.on_reset:
+            self.on_reset(e=e)

wuttapos/controls/feedback.py

@@ -24,6 +24,8 @@
 WuttaPOS - feedback control
 """
 
+import time
+
 import flet as ft
 
 from .base import WuttaControl
@@ -35,10 +37,13 @@ class WuttaFeedback(WuttaControl):
     default_font_size = 20
     default_button_height = 60
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self, config, page=None, *args, **kwargs):
         self.on_send = kwargs.pop('on_send', None)
         self.on_cancel = kwargs.pop('on_cancel', None)
-        super().__init__(*args, **kwargs)
+        super().__init__(config, *args, **kwargs)
+        # TODO: why must we save this aside from self.page ?
+        # but sometimes self.page gets set to None, so we must..
+        self.mypage = page
 
     def build(self):
 
@@ -107,9 +112,15 @@ class WuttaFeedback(WuttaControl):
             ],
         )
 
-        self.page.dialog = self.dlg
+        if self.mypage.dialog and self.mypage.dialog.open and self.mypage.dialog is not self.dlg:
+            self.mypage.dialog.open = False
+            self.mypage.update()
+            # cf. https://github.com/flet-dev/flet/issues/1670
+            time.sleep(0.1)
+
+        self.mypage.dialog = self.dlg
         self.dlg.open = True
-        self.page.update()
+        self.mypage.update()
 
     def keypress(self, key):
         if key == '⏎':
@@ -120,6 +131,9 @@ class WuttaFeedback(WuttaControl):
             self.message.value += key
 
         self.message.focus()
+
+        # TODO: why is keypress happening with no page?
+        if self.page:
             self.update()
 
     def long_backspace(self):
@@ -129,7 +143,7 @@ class WuttaFeedback(WuttaControl):
 
     def cancel(self, e):
         self.dlg.open = False
-        self.page.update()
+        self.mypage.update()
 
         if self.on_cancel:
             self.on_cancel(e)
@@ -138,22 +152,22 @@ class WuttaFeedback(WuttaControl):
         if self.message.value:
 
             self.app.send_email('pos_feedback', data={
-                'user_name': self.page.session.get('user_display'),
+                'user_name': self.mypage.session.get('user_display'),
                 'message': self.message.value,
             })
 
             self.dlg.open = False
-            self.page.snack_bar = ft.SnackBar(ft.Text(f"MESSAGE WAS SENT",
+            self.mypage.snack_bar = ft.SnackBar(ft.Text(f"MESSAGE WAS SENT",
                                                         color='black',
                                                         weight=ft.FontWeight.BOLD),
                                                 bgcolor='green',
                                                 duration=1500)
-            self.page.snack_bar.open = True
+            self.mypage.snack_bar.open = True
-            self.page.update()
+            self.mypage.update()
 
             if self.on_send:
                 self.on_send()
 
         else:
             self.message.focus()
-            self.page.update()
+            self.mypage.update()

wuttapos/controls/header.py

@@ -24,10 +24,14 @@
 WuttaPOS - header control
 """
 
+import rattail
+
 import flet as ft
 
+import wuttapos
 from .base import WuttaControl
 from .timestamp import WuttaTimestamp
+from .feedback import WuttaFeedback
 
 
 class WuttaHeader(WuttaControl):
@@ -36,8 +40,9 @@ class WuttaHeader(WuttaControl):
         self.txn_display = ft.Text("Txn: N", weight=ft.FontWeight.BOLD, size=20)
         self.cust_display = ft.Text("Cust: N", weight=ft.FontWeight.BOLD, size=20)
         self.user_display = ft.Text("User: N", weight=ft.FontWeight.BOLD, size=20)
-        self.logout_button = ft.FilledButton("Logout", on_click=self.logout_click, visible=False)
+        self.logout_button = ft.OutlinedButton("Logout", on_click=self.logout_click, visible=False)
         self.logout_divider = ft.VerticalDivider(visible=False)
+        self.title_button = ft.FilledButton(self.app.get_title(), on_click=self.title_click)
 
         controls = [
             self.txn_display,
@@ -50,7 +55,7 @@ class WuttaHeader(WuttaControl):
             ft.VerticalDivider(),
             self.logout_button,
             self.logout_divider,
-            ft.Text(f"WuttaPOS", weight=ft.FontWeight.BOLD, size=20),
+            self.title_button,
         ]
 
         return ft.Row(controls)
@@ -94,3 +99,71 @@ class WuttaHeader(WuttaControl):
 
         self.page.session.clear()
         self.page.go('/login')
+
+    def title_click(self, e):
+        title = self.app.get_title()
+
+        license = """\
+WuttaPOS -- Pythonic Point of Sale System
+Copyright © 2023 Lance Edgar
+
+WuttaPOS is free software: you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+WuttaPOS is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+You should have received a copy of the GNU General Public License along with
+WuttaPOS.  If not, see <http://www.gnu.org/licenses/>.
+"""
+
+        self.dlg = ft.AlertDialog(
+            title=ft.Text(title),
+            content=ft.Container(
+                content=ft.Column(
+                    [
+                        ft.Divider(),
+                        ft.Text(f"{title} v{wuttapos.__version__}"),
+                        ft.Text(f"rattail v{rattail.__version__}"),
+                        ft.Divider(),
+                        ft.Text(license),
+                        ft.Container(
+                            content=WuttaFeedback(self.config, page=self.page,
+                                                  on_send=self.reset, on_cancel=self.reset),
+                            alignment=ft.alignment.center,
+                            expand=True,
+                        ),
+                    ],
+                    expand=True,
+                ),
+                height=600,
+            ),
+            actions=[
+                ft.Row(
+                    [
+                        ft.Container(content=ft.Text("Close", size=20,
+                                                     weight=ft.FontWeight.BOLD),
+                                     height=60,
+                                     width=60 * 2.5,
+                                     alignment=ft.alignment.center,
+                                     border=ft.border.all(1, 'black'),
+                                     border_radius=ft.border_radius.all(5),
+                                     on_click=self.close_dlg),
+                    ],
+                    alignment=ft.MainAxisAlignment.CENTER,
+                ),
+            ],
+        )
+
+        self.page.dialog = self.dlg
+        self.dlg.open = True
+        self.page.update()
+
+    def close_dlg(self, e):
+        self.dlg.open = False
+        self.reset()
+        self.page.update()

wuttapos/views/base.py

@@ -53,9 +53,12 @@ class WuttaView(ft.View):
         return [self.build_header()]
 
     def build_header(self):
-        self.header = WuttaHeader(self.config)
+        self.header = WuttaHeader(self.config, on_reset=self.reset)
         return self.header
 
+    def reset(self, *args, **kwargs):
+        pass
+
 
 class WuttaViewContainer(ft.Container):
     """

wuttapos/views/pos.py

@@ -32,7 +32,6 @@ import flet as ft
 
 from .base import WuttaView
 from wuttapos.controls.custlookup import WuttaCustomerLookup
-from wuttapos.controls.feedback import WuttaFeedback
 from wuttapos.util import get_pos_batch_handler
 
 
@@ -641,7 +640,6 @@ class POSView(WuttaView):
 
             ft.Row(
                 [
-                    WuttaFeedback(self.config, on_send=self.reset, on_cancel=self.reset),
                     ft.Row(
                         [
                             self.set_quantity,