Delete Show and confirmation

bin/ffx/show_delete_screen.py

@@ -0,0 +1,123 @@
+import click
+
+from textual import events
+from textual.app import App, ComposeResult
+from textual.screen import Screen
+from textual.widgets import Header, Footer, Placeholder, Label, ListView, ListItem, Static, DataTable, Button, Input
+from textual.containers import Grid, Horizontal
+
+from ffx.model.show import Show
+
+# Screen[dict[int, str, int]]
+class ShowDeleteScreen(Screen):
+
+    CSS = """
+
+    Grid {
+        grid-size: 2;
+        grid-rows: 2 auto;
+        grid-columns: 30 auto;
+        height: 100%;
+        width: 100%;
+        padding: 1;
+    }
+
+    Input {
+        border: none;
+    }
+    Button {
+        border: none;
+    }
+    #toplabel {
+        height: 1;
+        column-span: 2;
+    }
+
+
+    #two {
+        column-span: 2;
+        row-span: 2;
+        tint: magenta 40%;
+    }
+
+    .box {
+        height: 100%;
+        border: solid green;
+    }
+    """
+
+    def __init__(self, show = {}):
+        super().__init__()
+
+        self.context = self.app.getContext()
+
+        self.Session = self.context['database_session'] # convenience
+
+        self.show_obj = show
+
+
+    def on_mount(self):
+
+        if self.show_obj:
+
+            self.query_one("#showlabel", Static).update(f"{self.show_obj['id']} - {self.show_obj['name']} ({self.show_obj['year']})")
+
+
+    def compose(self):
+
+        yield Header()
+
+        with Grid():
+
+            yield Static("Are you sure to delete the following show?", id="toplabel")
+
+            yield Static("")
+            yield Static("")
+
+            yield Static("", id="showlabel")
+            yield Static("")
+
+            yield Static("")
+            yield Static("")
+
+            yield Static("")
+            yield Static("")
+
+            yield Button("Delete", id="delete_button")
+            yield Button("Cancel", id="cancel_button")
+
+
+        yield Footer()
+
+
+   # Event handler for button press
+    def on_button_pressed(self, event: Button.Pressed) -> None:
+
+        if event.button.id == "delete_button":
+
+            if self.deleteShow(self.show_obj['id']):
+                self.dismiss(self.show_obj['id'])
+
+            else:
+                #TODO: Meldung
+                self.app.pop_screen()
+
+        if event.button.id == "cancel_button":
+            self.app.pop_screen()
+
+    def deleteShow(self, show_id):
+        try:
+            s = self.Session()
+            q = s.query(Show).filter(Show.id == show_id)
+
+            if q.count():
+                q.delete()
+                s.commit()
+                return True
+            return False
+
+        except Exception as ex:
+            click.ClickException(f"ShowDetailsScreen.updateShow(): {repr(ex)}")
+        finally:
+            s.close()
+

bin/ffx/shows_screen.py

@@ -8,7 +8,8 @@ from textual.containers import Grid, Horizontal
 from ffx.model.show import Show
 
 from .show_details_screen import ShowDetailsScreen
-from .show_new_screen import ShowNewScreen
+from .show_delete_screen import ShowDeleteScreen
+
 from .help_screen import HelpScreen
 
 
@@ -44,32 +45,55 @@ class ShowsScreen(Screen):
     BINDINGS = [
         ("e", "edit_show", "Edit Show"),
         ("n", "new_show", "New Show"),
+        ("d", "delete_show", "Delete Show"),
     ]
 
-    def action_new_show(self):
-        self.app.push_screen(ShowDetailsScreen(), self.handle_new_screen)
 
-    def handle_new_screen(self, screenResult):
 
-        show = (screenResult['id'], screenResult['name'], screenResult['year'])
-        self.table.add_row(*map(str, show))
+    def __init__(self):
+        super().__init__()
+
+        self.context = self.app.getContext()
+
+        self.Session = self.context['database_session'] # convenience
 
 
-    def action_edit_show(self):
+
+    def getSelectedShow(self):
 
         # Fetch the currently selected row when 'Enter' is pressed
         #selected_row_index = self.table.cursor_row
         row_key, col_key = self.table.coordinate_to_cell_key(self.table.cursor_coordinate)
 
+        selectedShow = {}
+
         if row_key is not None:
             selected_row_data = self.table.get_row(row_key)
             
-            selectedShow = {}
             selectedShow['id'] = selected_row_data[0]
             selectedShow['name'] = selected_row_data[1]
             selectedShow['year'] = selected_row_data[2]
 
-            self.app.push_screen(ShowDetailsScreen(show = selectedShow), self.handle_edit_screen)
+        return selectedShow
+
+
+
+    def action_new_show(self):
+        self.app.push_screen(ShowDetailsScreen(), self.handle_new_screen)
+
+    def handle_new_screen(self, screenResult):
+
+        show = (screenResult['id'], screenResult['name'], screenResult['year'])
+        self.table.add_row(*map(str, show))
+
+
+    def action_edit_show(self):
+            
+            selectedShow = self.getSelectedShow()
+
+            if selectedShow:
+                self.app.push_screen(ShowDetailsScreen(show = selectedShow), self.handle_edit_screen)
+
 
     def handle_edit_screen(self, screenResult):
 
@@ -79,12 +103,17 @@ class ShowsScreen(Screen):
         self.table.update_cell(row_key, self.column_key_year,  screenResult['year'])        
 
 
-    def __init__(self):
-        super().__init__()
+    def action_delete_show(self):
             
-        self.context = self.app.getContext()
+        selectedShow = self.getSelectedShow()
 
-        self.Session = self.context['database_session'] # convenience
+        if selectedShow:
+            self.app.push_screen(ShowDeleteScreen(show = selectedShow), self.handle_delete_screen)
+
+
+    def handle_delete_screen(self, screenResult):
+        row_key, col_key = self.table.coordinate_to_cell_key(self.table.cursor_coordinate)
+        self.table.remove_row(row_key)
 
 
     def loadShows(self):