CAKE-293 | applied webview to the app

lib/src/screens/dashboard/dashboard_page.dart

@@ -127,7 +127,13 @@ class DashboardPage extends BasePage {
               if (walletViewModel.type == WalletType.bitcoin) ActionButton(
                   image: buyImage,
                   title: S.of(context).buy,
-                  onClick: () => walletViewModel.buyCryptoCurrency()),
+                  onClick: () async {
+                    final url = await walletViewModel.getWyreUrl();
+                    if (url.isNotEmpty) {
+                      await Navigator.of(context)
+                          .pushNamed(Routes.webView, arguments: url);
+                    }
+                  }),
             ],
           )),
         )

lib/src/screens/web_view/web_view_page.dart

@@ -0,0 +1,59 @@
+import 'dart:async';
+import 'dart:io';
+import 'package:cake_wallet/generated/i18n.dart';
+import 'package:cake_wallet/src/screens/base_page.dart';
+import 'package:flutter/material.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+
+class WebViewPage extends BasePage {
+  WebViewPage({@required this.url});
+
+  final String url;
+
+  @override
+  String get title => S.current.buy;
+
+  @override
+  Widget body(BuildContext context) => WebViewPageBody(url: url);
+}
+
+class WebViewPageBody extends StatefulWidget {
+  WebViewPageBody({this.url});
+
+  final String url;
+
+  @override
+  WebViewPageBodyState createState() => WebViewPageBodyState();
+}
+
+class WebViewPageBodyState extends State<WebViewPageBody> {
+  WebViewController webViewController;
+
+  @override
+  void initState() {
+    super.initState();
+    if (Platform.isAndroid) WebView.platform = SurfaceAndroidWebView();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return WebView(
+      initialUrl: widget.url,
+      javascriptMode: JavascriptMode.unrestricted,
+      onWebViewCreated: (WebViewController controller) {
+        setState(() => webViewController = controller);
+      },
+      javascriptChannels: <JavascriptChannel>{
+        JavascriptChannel(
+          name: 'Echo',
+          onMessageReceived: (JavascriptMessage message) {
+            webViewController.evaluateJavascript("console.log('test callback');");
+          },
+        ),
+      },
+      /*onPageFinished: (url) {
+        webViewController.evaluateJavascript("alert('Test alert');");
+      },*/
+    );
+  }
+}