feat: add allowFileDownloads and suppressJavaScriptDialogs props

android/src/main/java/com/reactnativecommunity/webview/RNCWebChromeClient.java

@@ -15,6 +15,7 @@
 import android.view.ViewGroup;
 import android.webkit.ConsoleMessage;
 import android.webkit.GeolocationPermissions;
+import android.webkit.JsResult;
 import android.webkit.JsPromptResult;
 import android.webkit.PermissionRequest;
 import android.webkit.ValueCallback;
@@ -62,6 +63,7 @@ public class RNCWebChromeClient extends WebChromeClient implements LifecycleEven
 
     // This boolean block JS prompts and alerts from displaying during loading
     protected boolean blockJsDuringLoading = true;
+    protected boolean suppressJavaScriptDialogs = false;
 
     /*
      * - Permissions -
@@ -445,14 +447,32 @@ public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathC
 
     @Override
     public boolean onJsPrompt(WebView view, String url, String message, String defaultValue, JsPromptResult result) {
-        if (blockJsDuringLoading) {
+        if (shouldSuppressDialogs()) {
             result.cancel();
             return true;
         } else {
             return super.onJsPrompt(view, url, message, defaultValue, result);
         }
     }
 
+    @Override
+    public boolean onJsAlert(WebView view, String url, String message, JsResult result) {
+        if (shouldSuppressDialogs()) {
+            result.cancel();
+            return true;
+        }
+        return super.onJsAlert(view, url, message, result);
+    }
+
+    @Override
+    public boolean onJsConfirm(WebView view, String url, String message, JsResult result) {
+        if (shouldSuppressDialogs()) {
+            result.cancel();
+            return true;
+        }
+        return super.onJsConfirm(view, url, message, result);
+    }
+
     @Override
     public void onHostResume() {
         if (mVideoView != null && mVideoView.getSystemUiVisibility() != FULLSCREEN_SYSTEM_UI_VISIBILITY) {
@@ -486,4 +506,12 @@ public void setAllowsProtectedMedia(boolean enabled) {
     public void setHasOnOpenWindowEvent(boolean hasEvent) {
       mHasOnOpenWindowEvent = hasEvent;
     }
-}
+
+    public void setSuppressJavaScriptDialogs(boolean suppress) {
+      suppressJavaScriptDialogs = suppress;
+    }
+
+    private boolean shouldSuppressDialogs() {
+      return suppressJavaScriptDialogs || blockJsDuringLoading;
+    }
+}

android/src/main/java/com/reactnativecommunity/webview/RNCWebView.java

@@ -81,6 +81,8 @@ public class RNCWebView extends WebView implements LifecycleEventListener {
     protected boolean hasScrollEvent = false;
     protected boolean nestedScrollEnabled = false;
     protected ProgressChangedFilter progressChangedFilter;
+    protected boolean allowFileDownloads = true;
+    protected boolean suppressJavaScriptDialogs = false;
 
     /** Samsung Manufacturer Name */
     private static final String SAMSUNG_MANUFACTURER_NAME = "samsung";
@@ -121,6 +123,22 @@ public void setNestedScrollEnabled(boolean nestedScrollEnabled) {
         this.nestedScrollEnabled = nestedScrollEnabled;
     }
 
+    public void setAllowFileDownloads(boolean allow) {
+        this.allowFileDownloads = allow;
+    }
+
+    public boolean getAllowFileDownloads() {
+        return this.allowFileDownloads;
+    }
+
+    public void setSuppressJavaScriptDialogs(boolean suppress) {
+        this.suppressJavaScriptDialogs = suppress;
+    }
+
+    public boolean getSuppressJavaScriptDialogs() {
+        return this.suppressJavaScriptDialogs;
+    }
+
     @Override
     public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
         InputConnection inputConnection;

android/src/main/java/com/reactnativecommunity/webview/RNCWebViewManagerImpl.kt

@@ -102,9 +102,11 @@ class RNCWebViewManagerImpl(private val newArch: Boolean = false) {
             webView.setImportantForAutofill(View.IMPORTANT_FOR_AUTOFILL_NO);
         }
 		    val base64DownloaderRequestFilePermission = { base64: String ->
-			    	webView.reactApplicationContext.getNativeModule(RNCWebViewModule::class.java)?.let { module ->
-				    		module.setBase64DownloadRequest(base64)
-				    		module.grantFileDownloaderPermissions(getDownloadingMessageOrDefault(), getLackPermissionToDownloadMessageOrDefault())
+			    	if (webView.allowFileDownloads) {
+			    	    webView.reactApplicationContext.getNativeModule(RNCWebViewModule::class.java)?.let { module ->
+				    		    module.setBase64DownloadRequest(base64)
+				    		    module.grantFileDownloaderPermissions(getDownloadingMessageOrDefault(), getLackPermissionToDownloadMessageOrDefault())
+			    	    }
 			    	}
 						Unit
 		    }
@@ -113,6 +115,9 @@ class RNCWebViewManagerImpl(private val newArch: Boolean = false) {
 			      requestFilePermission = base64DownloaderRequestFilePermission,
 		    )
 		    webView.setDownloadListener(DownloadListener { url, userAgent, contentDisposition, mimetype, contentLength ->
+			      if (!webView.allowFileDownloads) {
+			      	  return@DownloadListener
+			      }
 			      if (url.startsWith("data:")) {
 			      	  Base64FileDownloader.downloadBase64File(
 			      	  	context = context,
@@ -255,6 +260,7 @@ class RNCWebViewManagerImpl(private val newArch: Boolean = false) {
                 }
             webChromeClient.setAllowsProtectedMedia(mAllowsProtectedMedia);
             webChromeClient.setHasOnOpenWindowEvent(mHasOnOpenWindowEvent);
+            webChromeClient.setSuppressJavaScriptDialogs(webView.suppressJavaScriptDialogs);
             webView.webChromeClient = webChromeClient
         } else {
             var webChromeClient = webView.webChromeClient as RNCWebChromeClient?
@@ -266,6 +272,7 @@ class RNCWebViewManagerImpl(private val newArch: Boolean = false) {
             }
             webChromeClient.setAllowsProtectedMedia(mAllowsProtectedMedia);
             webChromeClient.setHasOnOpenWindowEvent(mHasOnOpenWindowEvent);
+            webChromeClient.setSuppressJavaScriptDialogs(webView.suppressJavaScriptDialogs);
             webView.webChromeClient = webChromeClient
         }
     }
@@ -673,6 +680,11 @@ class RNCWebViewManagerImpl(private val newArch: Boolean = false) {
         mLackPermissionToDownloadMessage = value
     }
 
+    fun setAllowFileDownloads(viewWrapper: RNCWebViewWrapper, value: Boolean) {
+        val view = viewWrapper.webView
+        view.allowFileDownloads = value
+    }
+
     fun setHasOnOpenWindowEvent(viewWrapper: RNCWebViewWrapper, value: Boolean) {
         val view = viewWrapper.webView
         mHasOnOpenWindowEvent = value
@@ -698,6 +710,15 @@ class RNCWebViewManagerImpl(private val newArch: Boolean = false) {
       }
     }
 
+    fun setSuppressJavaScriptDialogs(viewWrapper: RNCWebViewWrapper, suppress: Boolean) {
+        val view = viewWrapper.webView
+        view.suppressJavaScriptDialogs = suppress
+        val client = view.webChromeClient
+        if (client is RNCWebChromeClient) {
+            client.setSuppressJavaScriptDialogs(suppress)
+        }
+    }
+
     fun setMenuCustomItems(viewWrapper: RNCWebViewWrapper, value: ReadableArray?) {
         val view = viewWrapper.webView
         when (value) {

android/src/main/java/com/reactnativecommunity/webview/extension/file/BlobFileDownloader.kt

@@ -1,28 +1,30 @@
 package com.reactnativecommunity.webview.extension.file
 
-import android.content.Context
 import android.webkit.JavascriptInterface
 import com.reactnativecommunity.webview.RNCWebView
 import com.reactnativecommunity.webview.extension.file.Base64FileDownloader.downloadBase64File
 import java.io.IOException
 
 internal fun RNCWebView.addBlobFileDownloaderJavascriptInterface(downloadingMessage: String, requestFilePermission: (String) -> Unit) {
 	this.addJavascriptInterface(
-		BlobFileDownloader(this.context, downloadingMessage, requestFilePermission),
+		BlobFileDownloader(this, downloadingMessage, requestFilePermission),
 		BlobFileDownloader.JS_INTERFACE_TAG,
 	)
 }
 
 internal class BlobFileDownloader(
-	private val context: Context,
+	private val webView: RNCWebView,
 	private val downloadingMessage: String,
 	private val requestFilePermission: (String) -> Unit,
 ) {
 
 	@JavascriptInterface
 	@Throws(IOException::class)
 	fun getBase64FromBlobData(base64: String) {
-		downloadBase64File(context, base64, downloadingMessage, requestFilePermission)
+		if (!webView.allowFileDownloads) {
+			return
+		}
+		downloadBase64File(webView.context, base64, downloadingMessage, requestFilePermission)
 	}
 
 	companion object {

android/src/newarch/com/reactnativecommunity/webview/RNCWebViewManager.java

@@ -207,12 +207,24 @@ public void setLackPermissionToDownloadMessage(RNCWebViewWrapper view, @Nullable
         mRNCWebViewManagerImpl.setLackPermissionToDownloadMessage(value);
     }
 
+    @Override
+    @ReactProp(name = "allowFileDownloads", defaultBoolean = true)
+    public void setAllowFileDownloads(RNCWebViewWrapper view, boolean value) {
+        mRNCWebViewManagerImpl.setAllowFileDownloads(view, value);
+    }
+
     @Override
     @ReactProp(name = "hasOnOpenWindowEvent")
     public void setHasOnOpenWindowEvent(RNCWebViewWrapper view, boolean hasEvent) {
         mRNCWebViewManagerImpl.setHasOnOpenWindowEvent(view, hasEvent);
     }
 
+    @Override
+    @ReactProp(name = "suppressJavaScriptDialogs")
+    public void setSuppressJavaScriptDialogs(RNCWebViewWrapper view, boolean suppress) {
+        mRNCWebViewManagerImpl.setSuppressJavaScriptDialogs(view, suppress);
+    }
+
     @Override
     @ReactProp(name = "mediaPlaybackRequiresUserAction")
     public void setMediaPlaybackRequiresUserAction(RNCWebViewWrapper view, boolean value) {
@@ -556,4 +568,4 @@ public void onDropViewInstance(@NonNull RNCWebViewWrapper view) {
         mRNCWebViewManagerImpl.onDropViewInstance(view);
         super.onDropViewInstance(view);
     }
-}
+}

android/src/oldarch/com/reactnativecommunity/webview/RNCWebViewManager.java

@@ -168,11 +168,21 @@ public void setLackPermissionToDownloadMessage(RNCWebViewWrapper view, @Nullable
         mRNCWebViewManagerImpl.setLackPermissionToDownloadMessage(value);
     }
 
+    @ReactProp(name = "allowFileDownloads", defaultBoolean = true)
+    public void setAllowFileDownloads(RNCWebViewWrapper view, boolean value) {
+        mRNCWebViewManagerImpl.setAllowFileDownloads(view, value);
+    }
+
     @ReactProp(name = "hasOnOpenWindowEvent")
     public void setHasOnOpenWindowEvent(RNCWebViewWrapper view, boolean hasEvent) {
         mRNCWebViewManagerImpl.setHasOnOpenWindowEvent(view, hasEvent);
     }
 
+    @ReactProp(name = "suppressJavaScriptDialogs")
+    public void setSuppressJavaScriptDialogs(RNCWebViewWrapper view, boolean suppress) {
+        mRNCWebViewManagerImpl.setSuppressJavaScriptDialogs(view, suppress);
+    }
+
     @ReactProp(name = "mediaPlaybackRequiresUserAction")
     public void setMediaPlaybackRequiresUserAction(RNCWebViewWrapper view, boolean value) {
         mRNCWebViewManagerImpl.setMediaPlaybackRequiresUserAction(view, value);
@@ -330,4 +340,4 @@ public void onDropViewInstance(@NonNull RNCWebViewWrapper view) {
         mRNCWebViewManagerImpl.onDropViewInstance(view);
         super.onDropViewInstance(view);
     }
-}
+}

apple/RNCWebView.mm

@@ -277,6 +277,7 @@ - (void)updateProps:(Props::Shared const &)props oldProps:(Props::Shared const &
     REMAP_WEBVIEW_STRING_PROP(injectedJavaScriptObject)
     REMAP_WEBVIEW_PROP(javaScriptEnabled)
     REMAP_WEBVIEW_PROP(javaScriptCanOpenWindowsAutomatically)
+    REMAP_WEBVIEW_PROP(suppressJavaScriptDialogs)
     REMAP_WEBVIEW_PROP(allowFileAccessFromFileURLs)
     REMAP_WEBVIEW_PROP(allowUniversalAccessFromFileURLs)
     REMAP_WEBVIEW_PROP(allowsInlineMediaPlayback)

apple/RNCWebViewImpl.h

@@ -97,6 +97,7 @@ shouldStartLoadForRequest:(NSMutableDictionary<NSString *, id> *)request
 @property (nonatomic, assign) BOOL cacheEnabled;
 @property (nonatomic, assign) BOOL javaScriptEnabled;
 @property (nonatomic, assign) BOOL javaScriptCanOpenWindowsAutomatically;
+@property (nonatomic, assign) BOOL suppressJavaScriptDialogs;
 @property (nonatomic, assign) BOOL allowFileAccessFromFileURLs;
 @property (nonatomic, assign) BOOL allowUniversalAccessFromFileURLs;
 @property (nonatomic, assign) BOOL allowsLinkPreview;

apple/RNCWebViewImpl.m

@@ -1268,6 +1268,10 @@ - (void)                    webView:(WKWebView *)webView
  */
 - (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler
 {
+  if (_suppressJavaScriptDialogs) {
+    completionHandler();
+    return;
+  }
 #if !TARGET_OS_OSX
   UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"" message:message preferredStyle:UIAlertControllerStyleAlert];
   [alert addAction:[UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:^(__unused UIAlertAction *action) {
@@ -1287,6 +1291,10 @@ - (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSStrin
  * confirm
  */
 - (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL))completionHandler{
+  if (_suppressJavaScriptDialogs) {
+    completionHandler(NO);
+    return;
+  }
 #if !TARGET_OS_OSX
   UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"" message:message preferredStyle:UIAlertControllerStyleAlert];
   [alert addAction:[UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:^(__unused UIAlertAction *action) {
@@ -1312,6 +1320,10 @@ - (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSStr
  * prompt
  */
 - (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString *))completionHandler{
+  if (_suppressJavaScriptDialogs) {
+    completionHandler(nil);
+    return;
+  }
   if (!_disablePromptDuringLoading) {
 #if !TARGET_OS_OSX
   UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"" message:prompt preferredStyle:UIAlertControllerStyleAlert];

apple/RNCWebViewManager.mm

@@ -59,6 +59,7 @@ - (RNCView *)view
 RCT_EXPORT_VIEW_PROPERTY(injectedJavaScriptObject, NSString)
 RCT_EXPORT_VIEW_PROPERTY(javaScriptEnabled, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(javaScriptCanOpenWindowsAutomatically, BOOL)
+RCT_EXPORT_VIEW_PROPERTY(suppressJavaScriptDialogs, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(allowFileAccessFromFileURLs, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(allowUniversalAccessFromFileURLs, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(allowsInlineMediaPlayback, BOOL)

docs/Reference.md

@@ -38,6 +38,7 @@ This document lays out the current public properties and methods for the React N
 - [`domStorageEnabled`](Reference.md#domstorageenabled)
 - [`javaScriptEnabled`](Reference.md#javascriptenabled)
 - [`javaScriptCanOpenWindowsAutomatically`](Reference.md#javascriptcanopenwindowsautomatically)
+- [`suppressJavaScriptDialogs`](Reference.md#suppressjavascriptdialogs)
 - [`androidLayerType`](Reference.md#androidLayerType)
 - [`mixedContentMode`](Reference.md#mixedcontentmode)
 - [`thirdPartyCookiesEnabled`](Reference.md#thirdpartycookiesenabled)
@@ -91,6 +92,7 @@ This document lays out the current public properties and methods for the React N
 - [`minimumFontSize`](Reference.md#minimumFontSize)
 - [`downloadingMessage`](Reference.md#downloadingMessage)
 - [`lackPermissionToDownloadMessage`](Reference.md#lackPermissionToDownloadMessage)
+- [`allowFileDownloads`](Reference.md#allowfiledownloads)
 - [`allowsProtectedMedia`](Reference.md#allowsProtectedMedia)
 - [`webviewDebuggingEnabled`](Reference.md#webviewDebuggingEnabled)
 - [`paymentRequestEnabled`](Reference.md#paymentRequestEnabled)
@@ -926,6 +928,16 @@ A Boolean value indicating whether JavaScript can open windows without user inte
 
 ---
 
+### `suppressJavaScriptDialogs`[⬆](#props-index)
+
+Boolean value to suppress JavaScript dialogs (alert/confirm/prompt). The default value is `false`.
+
+| Type | Required | Platform |
+| ---- | -------- | -------- |
+| bool | No       | Android, iOS |
+
+---
+
 ### `androidLayerType`[⬆](#props-index)
 
 Specifies the layer type.
@@ -1693,6 +1705,14 @@ This is the message that is shown in the Toast when the webview is unable to dow
 | ------ | -------- | -------- |
 | string | No       | Android  |
 
+### `allowFileDownloads`[⬆](#props-index)
+
+Boolean value to control whether file downloads are allowed. The default value is `true`.
+
+| Type | Required | Platform |
+| ---- | -------- | -------- |
+| bool | No       | Android  |
+
 ### `allowsProtectedMedia`[⬆](#props-index)
 
 Whether or not the Webview can play media protected by DRM. Default is `false`.