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icon: const Icon(Icons.copy),
onPressed:
Actions.handler<CopyIntent>(context, const CopyIntent()),
),
IconButton(
icon: const Icon(Icons.select_all),
onPressed: Actions.handler<SelectAllIntent>(
context, const SelectAllIntent()),
),
const Spacer(),
],
),
),
);
}),
);
}
}
/// A ShortcutManager that logs all keys that it handles.
class LoggingShortcutManager extends ShortcutManager {
@override
KeyEventResult handleKeypress(BuildContext context, KeyEvent event) {
final KeyEventResult result = super.handleKeypress(context, event);
if (result == KeyEventResult.handled) {
print('Handled shortcut $event in $context');
}
return result;
}
}
/// An ActionDispatcher that logs all the actions that it invokes.
class LoggingActionDispatcher extends ActionDispatcher {
@override
Object? invokeAction(
covariant Action<Intent> action,
covariant Intent intent, [
BuildContext? context,
]) {
print('Action invoked: $action($intent) from $context');
super.invokeAction(action, intent, context);
return null;
}
}
/// An intent that is bound to ClearAction in order to clear its
/// TextEditingController.
class ClearIntent extends Intent {
const ClearIntent();
}
/// An action that is bound to ClearIntent that clears its
/// TextEditingController.
class ClearAction extends Action<ClearIntent> {
ClearAction(this.controller);
final TextEditingController controller;
@override
Object? invoke(covariant ClearIntent intent) {
controller.clear();
return null;
}
}
/// An intent that is bound to CopyAction to copy from its
/// TextEditingController.
class CopyIntent extends Intent {
const CopyIntent();
}
/// An action that is bound to CopyIntent that copies the text in its
/// TextEditingController to the clipboard.
class CopyAction extends Action<CopyIntent> {
CopyAction(this.controller);
final TextEditingController controller;
@override
Object? invoke(covariant CopyIntent intent) {
final String selectedString = controller.text.substring(
controller.selection.baseOffset,
controller.selection.extentOffset,
);
Clipboard.setData(ClipboardData(text: selectedString));
return null;
}
}
/// An intent that is bound to SelectAllAction to select all the text in its
/// controller.
class SelectAllIntent extends Intent {
const SelectAllIntent();
}
/// An action that is bound to SelectAllAction that selects all text in its
/// TextEditingController.
class SelectAllAction extends Action<SelectAllIntent> {
SelectAllAction(this.controller);
final TextEditingController controller;
@override
Object? invoke(covariant SelectAllIntent intent) {
controller.selection = controller.selection.copyWith(
baseOffset: 0,
extentOffset: controller.text.length,
affinity: controller.selection.affinity,
);
return null;
}
}
/// The top level application class.
///