text-input-1

sandbox/input.py

@@ -0,0 +1,42 @@
+from textual.app import App
+from textual.widget import Widget
+
+from textual.widgets.text_input import TextInput, TextInputBase
+
+
+def celsius_to_fahrenheit(celsius: float) -> float:
+    return celsius * 1.8 + 32
+
+
+def fahrenheit_to_celsius(fahrenheit: float) -> float:
+    return (fahrenheit - 32) / 1.8
+
+
+class InputApp(App[str]):
+    def on_mount(self) -> None:
+        self.fahrenheit = TextInput(placeholder="Fahrenheit", id="fahrenheit")
+        self.celsius = TextInput(placeholder="Celsius", id="celsius")
+        self.fahrenheit.focus()
+        text_boxes = Widget(self.fahrenheit, self.celsius)
+        self.mount(inputs=text_boxes)
+
+    def handle_changed(self, event: TextInputBase.Changed) -> None:
+        try:
+            value = float(event.value)
+        except ValueError:
+            return
+        if event.sender == self.celsius:
+            fahrenheit = celsius_to_fahrenheit(value)
+            self.fahrenheit.current_text = f"{fahrenheit:.1f}"
+        elif event.sender == self.fahrenheit:
+            celsius = fahrenheit_to_celsius(value)
+            self.celsius.current_text = f"{celsius:.1f}"
+
+
+app = InputApp(
+    log_path="textual.log", css_path="input.scss", watch_css=True, log_verbosity=2
+)
+
+if __name__ == "__main__":
+    result = app.run()
+    print(repr(result))