snapshot

tests/snapshot_tests/snapshot_apps/screen_switch.py

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+from textual.app import App, ComposeResult
+from textual.screen import Screen
+from textual.widgets import Static, Header, Footer
+
+
+class ScreenA(Screen):
+    BINDINGS = [("b", "switch_to_b", "Switch to screen B")]
+
+    def compose(self) -> ComposeResult:
+        yield Header()
+        yield Static("A")
+        yield Footer()
+
+    def action_switch_to_b(self):
+        self.app.switch_screen(ScreenB())
+
+
+class ScreenB(Screen):
+    def compose(self) -> ComposeResult:
+        yield Header()
+        yield Static("B")
+        yield Footer()
+
+
+class ModalApp(App):
+    BINDINGS = [("a", "push_a", "Push screen A")]
+
+    def compose(self) -> ComposeResult:
+        yield Header()
+        yield Footer()
+
+    def action_push_a(self) -> None:
+        self.push_screen(ScreenA())
+
+
+if __name__ == "__main__":
+    app = ModalApp()
+    app.run()