1002

lib/popups.dart

@@ -0,0 +1,49 @@
+part of 'main.dart';
+
+class Popup {
+  final String title;
+  final String body;
+  final String positiveText;
+  final String negativeText;
+  final  onPositive;
+  final  onNegative;
+
+  Popup({@required this.title, @required this.body, this.positiveText, this.negativeText, this.onPositive, this.onNegative});
+
+  void show(BuildContext context) {
+    List<Widget> buttons = [];
+    buttons.add(FlatButton(
+      child: new Text("$positiveText"),
+      onPressed: () {
+        Navigator.of(context).pop();
+        if (onPositive != null) {
+          onPositive();
+        }
+      },
+    ));
+    if (negativeText != null) {
+      buttons.add(FlatButton(
+        child: new Text("$negativeText"),
+        onPressed: () {
+          Navigator.of(context).pop();
+          if (onNegative != null) {
+            onNegative();
+          }
+        },
+      ));
+    }
+    // flutter defined function
+    showDialog(
+      barrierDismissible: false,
+      context: context,
+      builder: (BuildContext context) {
+        // return object of type Dialog
+        return AlertDialog(
+          title: new Text("$title"),
+          content: new Text("$body"),
+          actions: buttons,
+        );
+      },
+    );
+  }
+}