Added option to set mixed content mode in android webview

Summary:
PR for option to set mixed content mode in Webview(Android) for issue #8460
Closes https://github.com/facebook/react-native/pull/12314

Differential Revision: D4663084

Pulled By: lacker

fbshipit-source-id: 0e40ea463739166311ddcb7887ff6d0289369637

Libraries/Components/WebView/WebView.android.js

@@ -166,6 +166,22 @@ class WebView extends React.Component {
      * executed immediately as JavaScript.
      */
     injectJavaScript: PropTypes.func,
+
+    /**
+     * Specifies the mixed content mode. i.e WebView will allow a secure origin to load content from any other origin.
+     *
+     * Possible values for `mixedContentMode` are:
+     *
+     * - `'never'` (default) - WebView will not allow a secure origin to load content from an insecure origin.
+     * - `'always'` - WebView will allow a secure origin to load content from any other origin, even if that origin is insecure.
+     * - `'compatibility'` -  WebView will attempt to be compatible with the approach of a modern web browser with regard to mixed content.
+     * @platform android
+     */
+    mixedContentMode: PropTypes.oneOf([
+      'never',
+      'always',
+      'compatibility'
+    ]),
   };
 
   static defaultProps = {
@@ -242,6 +258,7 @@ class WebView extends React.Component {
         testID={this.props.testID}
         mediaPlaybackRequiresUserAction={this.props.mediaPlaybackRequiresUserAction}
         allowUniversalAccessFromFileURLs={this.props.allowUniversalAccessFromFileURLs}
+        mixedContentMode={this.props.mixedContentMode}
       />;
 
     return (

Libraries/Components/WebView/WebView.ios.js

@@ -340,6 +340,22 @@ class WebView extends React.Component {
      * executed immediately as JavaScript.
      */
     injectJavaScript: PropTypes.func,
+
+    /**
+     * Specifies the mixed content mode. i.e WebView will allow a secure origin to load content from any other origin.
+     *
+     * Possible values for `mixedContentMode` are:
+     *
+     * - `'never'` (default) - WebView will not allow a secure origin to load content from an insecure origin.
+     * - `'always'` - WebView will allow a secure origin to load content from any other origin, even if that origin is insecure.
+     * - `'compatibility'` -  WebView will attempt to be compatible with the approach of a modern web browser with regard to mixed content.
+     * @platform android
+     */
+    mixedContentMode: PropTypes.oneOf([
+      'never',
+      'always',
+      'compatibility'
+    ]),
   };
 
   state = {

ReactAndroid/src/main/java/com/facebook/react/views/webview/ReactWebViewManager.java

@@ -31,6 +31,7 @@ import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.webkit.JavascriptInterface;
 import android.webkit.ValueCallback;
+import android.webkit.WebSettings;
 
 import com.facebook.common.logging.FLog;
 import com.facebook.react.common.ReactConstants;
@@ -476,6 +477,19 @@ public class ReactWebViewManager extends SimpleViewManager<WebView> {
     }
   }
 
+  @ReactProp(name = "mixedContentMode")
+  public void setMixedContentMode(WebView view, @Nullable String mixedContentMode) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+      if (mixedContentMode == null || "never".equals(mixedContentMode)) {
+        view.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_NEVER_ALLOW);
+      } else if ("always".equals(mixedContentMode)) {
+        view.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
+      } else if ("compatibility".equals(mixedContentMode)) {
+        view.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_COMPATIBILITY_MODE);
+      } 
+    }
+  }
+
   @Override
   protected void addEventEmitters(ThemedReactContext reactContext, WebView view) {
     // Do not register default touch emitter and let WebView implementation handle touches