Commit ac5b1ff

@@ -0,0 +1,69 @@
+import 'package:flutter/material.dart';
+
+/// Base for fullscreen dialoges that allow value input.
+class FullscreenDialoge extends StatelessWidget {
+  /// Create a dialoge that has a icon- and a textbutton in the app bar.
+  const FullscreenDialoge({super.key,
+    this.body,
+    required this.actionButtonText,
+    this.onActionButtonPressed,
+    this.bottomAppBar = false,
+    this.closeIcon = Icons.close,
+  });
+
+  /// The primary content of the dialoge.
+  final Widget? body;
+
+  /// Icon of button leading in the app bar.
+  ///
+  /// When pressing on the icon button the context gets popped.
+  ///
+  /// Setting this icon to null will hide the button entirely.
+  final IconData? closeIcon;
+
+  /// Primary content of the text button at the right end of the app bar.
+  ///
+  /// Usually `localizations.btnSave`
+  ///
+  /// Setting the text to null will remove the button.
+  final String? actionButtonText;
+
+  /// Action on press of the button.
+  ///
+  /// Setting this to null will disable the button. To hide it refer to
+  /// [actionButtonText].
+  final void Function()? onActionButtonPressed;
+
+  /// Whether to move the app bar to the bottom of the screen.
+  ///
+  /// Setting this to false will let the app bar stay at the top.
+  final bool bottomAppBar;
+
+  @override
+  Widget build(BuildContext context) => Scaffold(
+    body: body,
+    appBar: bottomAppBar ? null : _buildAppBar(context),
+    bottomNavigationBar: bottomAppBar ? BottomAppBar(
+      color: Colors.transparent,
+      shadowColor: Colors.transparent,
+      surfaceTintColor: Colors.transparent,
+      child: _buildAppBar(context)
+    ) : null,
+  );
+
+  PreferredSizeWidget _buildAppBar(BuildContext context) => AppBar(
+    forceMaterialTransparency: true,
+    leading: (closeIcon == null) ? null : IconButton(
+      onPressed: () => Navigator.of(context).pop(null),
+      icon: Icon(closeIcon),
+    ),
+    actions: [
+      if (actionButtonText != null)
+        TextButton(
+          onPressed: onActionButtonPressed,
+          child:  Text(actionButtonText!)
+        )
+    ]
+  );
+
+}
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