MOBILE-2278: Add support for iOS WKWebView

lib/src/browser.dart

@@ -42,19 +42,22 @@ class Browser {
     _chrome,
     _firefox,
     _safari,
-    _internetExplorer
+    _internetExplorer,
+    _wkWebView
   ];
 
   bool get isChrome => this == _chrome;
   bool get isFirefox => this == _firefox;
   bool get isSafari => this == _safari;
   bool get isInternetExplorer => this == _internetExplorer;
+  bool get isWKWebView => this == _wkWebView;
 }
 
 Browser _chrome = new _Chrome();
 Browser _firefox = new _Firefox();
 Browser _safari = new _Safari();
 Browser _internetExplorer = new _InternetExplorer();
+Browser _wkWebView = new _WKWebView();
 
 class _Chrome extends Browser {
   _Chrome() : super('Chrome', _isChrome, _getVersion);
@@ -95,7 +98,11 @@ class _Safari extends Browser {
   _Safari() : super('Safari', _isSafari, _getVersion);
 
   static bool _isSafari(NavigatorProvider navigator) {
-    return navigator.vendor.contains('Apple');
+    // An web view running in an iOS app does not have a 'Version/X.X.X' string in the appVersion
+    var vendor = navigator.vendor;
+    return vendor != null &&
+        vendor.contains('Apple') &&
+        navigator.appVersion.contains('Version');
   }
 
   static Version _getVersion(NavigatorProvider navigator) {
@@ -108,6 +115,27 @@ class _Safari extends Browser {
   }
 }
 
+class _WKWebView extends Browser {
+  _WKWebView() : super('WKWebView', _isWKWebView, _getVersion);
+
+  static bool _isWKWebView(NavigatorProvider navigator) {
+    // An web view running in an iOS app does not have a 'Version/X.X.X' string in the appVersion
+    var vendor = navigator.vendor;
+    return vendor != null &&
+        vendor.contains('Apple') &&
+        !navigator.appVersion.contains('Version');
+  }
+
+  static Version _getVersion(NavigatorProvider navigator) {
+    Match match = new RegExp(r'AppleWebKit/(\d+)\.(\d+)\.(\d+)')
+        .firstMatch(navigator.appVersion);
+    var major = int.parse(match.group(1));
+    var minor = int.parse(match.group(2));
+    var patch = int.parse(match.group(3));
+    return new Version(major, minor, patch);
+  }
+}
+
 class _InternetExplorer extends Browser {
   _InternetExplorer()
       : super('Internet Explorer', _isInternetExplorer, _getVersion);

smithy.yml

@@ -26,4 +26,4 @@ artifacts:
   documentation:
     - ./doc/api/api.tar.gz
   pub:
-    - ./platform_detect.pub.tgz
+    - ./platform_detect.pub.tgz

test/browser_test.dart

@@ -96,5 +96,24 @@ void main() {
       expect(browser.isInternetExplorer, false);
       expect(browser.version, new Version(9, 1, 3));
     });
+
+    test('WKWebView', () {
+      var navigator = new TestNavigator()
+          ..vendor = 'Apple Computer, Inc.'
+          ..userAgent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/601.7.8 (KHTML, like Gecko) Version/9.1.3 Safari/601.7.8'
+          ..appVersion = '5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/601.7.8 (KHTML, like Gecko) Safari/601.7.8'
+          ..appName = 'Netscape';
+
+      Browser.navigator = navigator;
+      Browser browser = Browser.getCurrentBrowser();
+
+      expect(browser.name, 'WKWebView');
+      expect(browser.isChrome, false);
+      expect(browser.isFirefox, false);
+      expect(browser.isSafari, false);
+      expect(browser.isWKWebView, true);
+      expect(browser.isInternetExplorer, false);
+      expect(browser.version, new Version(601, 7, 8));
+    });
   });
 }