feat(Footer): add Footer widget

Author: 2534290808

lib/flutter_weui.dart

@@ -13,3 +13,4 @@ export 'dialog.dart';
 export 'touchable.dart';
 export 'media_box.dart';
 export 'panel.dart';
+export 'footer.dart';

lib/footer.dart

@@ -0,0 +1,61 @@
+import 'package:flutter/material.dart';
+import 'touchable.dart';
+
+class Link {
+  Link({this.text, this.onPressed});
+  final String text;
+  final VoidCallback onPressed;
+}
+
+class Footer extends StatelessWidget {
+  Footer({Key key, this.text = "", this.links = const []}) : super(key: key);
+  final String text;
+  final List<Link> links;
+
+  List<Widget> _getLinks() {
+    List<Widget> linksWidget = List();
+    for (int i = 0; i < links.length; i++) {
+      if (i == links.length - 1) {
+        linksWidget.add(TouchableOpacity(
+          onPressed: () {
+            VoidCallback _onPressed = links.elementAt(i).onPressed;
+            if (_onPressed != null) _onPressed();
+          },
+          child: Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 8),
+            child: Text(
+              links.elementAt(i).text,
+              style: TextStyle(fontSize: 14, color: Color(0xff586c94)),
+            ),
+          ),
+        ));
+      } else {
+        linksWidget.add(TouchableOpacity(
+          onPressed: () {
+            VoidCallback _onPressed = links.elementAt(i).onPressed;
+            if (_onPressed != null) _onPressed();
+          },
+          child: Container(
+            padding: const EdgeInsets.symmetric(horizontal: 8),
+            decoration: BoxDecoration(border: Border(right: BorderSide(color: Color(0xffe5e5e5)))),
+            child: Text(
+              links.elementAt(i).text,
+              style: TextStyle(fontSize: 14, color: Color(0xff586c94)),
+            ),
+          ),
+        ));
+      }
+    }
+    return linksWidget;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: <Widget>[
+        Row(mainAxisAlignment: MainAxisAlignment.center, children: _getLinks()),
+        Text(text, style: TextStyle(fontSize: 12, color: const Color(0xff808080))),
+      ],
+    );
+  }
+}