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RNCWebViewManager.java
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RNCWebViewManager.java
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package com.reactnativecommunity.webview;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.DownloadManager;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.Manifest;
import android.net.http.SslError;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.Message;
import android.os.SystemClock;
import android.text.TextUtils;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.WindowManager;
import android.webkit.ConsoleMessage;
import android.webkit.CookieManager;
import android.webkit.DownloadListener;
import android.webkit.GeolocationPermissions;
import android.webkit.HttpAuthHandler;
import android.webkit.JavascriptInterface;
import android.webkit.RenderProcessGoneDetail;
import android.webkit.SslErrorHandler;
import android.webkit.PermissionRequest;
import android.webkit.URLUtil;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebResourceRequest;
import android.webkit.WebResourceResponse;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.FrameLayout;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.core.content.ContextCompat;
import androidx.core.util.Pair;
import androidx.webkit.WebSettingsCompat;
import androidx.webkit.WebViewFeature;
import com.facebook.common.logging.FLog;
import com.facebook.react.modules.core.PermissionAwareActivity;
import com.facebook.react.modules.core.PermissionListener;
import com.facebook.react.views.scroll.ScrollEvent;
import com.facebook.react.views.scroll.ScrollEventType;
import com.facebook.react.views.scroll.OnScrollDispatchHelper;
import com.facebook.react.bridge.Arguments;
import com.facebook.react.bridge.CatalystInstance;
import com.facebook.react.bridge.LifecycleEventListener;
import com.facebook.react.bridge.ReactContext;
import com.facebook.react.bridge.ReadableArray;
import com.facebook.react.bridge.ReadableMap;
import com.facebook.react.bridge.ReadableMapKeySetIterator;
import com.facebook.react.bridge.WritableMap;
import com.facebook.react.bridge.WritableNativeArray;
import com.facebook.react.bridge.WritableNativeMap;
import com.facebook.react.common.MapBuilder;
import com.facebook.react.common.build.ReactBuildConfig;
import com.facebook.react.module.annotations.ReactModule;
import com.facebook.react.uimanager.SimpleViewManager;
import com.facebook.react.uimanager.ThemedReactContext;
import com.facebook.react.uimanager.UIManagerModule;
import com.facebook.react.uimanager.annotations.ReactProp;
import com.facebook.react.uimanager.events.ContentSizeChangeEvent;
import com.facebook.react.uimanager.events.Event;
import com.facebook.react.uimanager.events.EventDispatcher;
import com.reactnativecommunity.webview.RNCWebViewModule.ShouldOverrideUrlLoadingLock.ShouldOverrideCallbackState;
import com.reactnativecommunity.webview.events.TopLoadingErrorEvent;
import com.reactnativecommunity.webview.events.TopHttpErrorEvent;
import com.reactnativecommunity.webview.events.TopLoadingFinishEvent;
import com.reactnativecommunity.webview.events.TopLoadingProgressEvent;
import com.reactnativecommunity.webview.events.TopLoadingStartEvent;
import com.reactnativecommunity.webview.events.TopMessageEvent;
import com.reactnativecommunity.webview.events.TopShouldStartLoadWithRequestEvent;
import com.reactnativecommunity.webview.events.TopRenderProcessGoneEvent;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.UnsupportedEncodingException;
import java.lang.IllegalArgumentException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.atomic.AtomicReference;
/**
* Manages instances of {@link WebView}
* <p>
* Can accept following commands:
* - GO_BACK
* - GO_FORWARD
* - RELOAD
* - LOAD_URL
* <p>
* {@link WebView} instances could emit following direct events:
* - topLoadingFinish
* - topLoadingStart
* - topLoadingStart
* - topLoadingProgress
* - topShouldStartLoadWithRequest
* <p>
* Each event will carry the following properties:
* - target - view's react tag
* - url - url set for the webview
* - loading - whether webview is in a loading state
* - title - title of the current page
* - canGoBack - boolean, whether there is anything on a history stack to go back
* - canGoForward - boolean, whether it is possible to request GO_FORWARD command
*/
@ReactModule(name = RNCWebViewManager.REACT_CLASS)
public class RNCWebViewManager extends SimpleViewManager<WebView> {
private static final String TAG = "RNCWebViewManager";
public static final int COMMAND_GO_BACK = 1;
public static final int COMMAND_GO_FORWARD = 2;
public static final int COMMAND_RELOAD = 3;
public static final int COMMAND_STOP_LOADING = 4;
public static final int COMMAND_POST_MESSAGE = 5;
public static final int COMMAND_INJECT_JAVASCRIPT = 6;
public static final int COMMAND_LOAD_URL = 7;
public static final int COMMAND_FOCUS = 8;
// android commands
public static final int COMMAND_CLEAR_FORM_DATA = 1000;
public static final int COMMAND_CLEAR_CACHE = 1001;
public static final int COMMAND_CLEAR_HISTORY = 1002;
protected static final String REACT_CLASS = "RNCWebView";
protected static final String HTML_ENCODING = "UTF-8";
protected static final String HTML_MIME_TYPE = "text/html";
protected static final String JAVASCRIPT_INTERFACE = "ReactNativeWebView";
protected static final String HTTP_METHOD_POST = "POST";
// Use `webView.loadUrl("about:blank")` to reliably reset the view
// state and release page resources (including any running JavaScript).
protected static final String BLANK_URL = "about:blank";
protected static final int SHOULD_OVERRIDE_URL_LOADING_TIMEOUT = 250;
protected static final String DEFAULT_DOWNLOADING_MESSAGE = "Downloading";
protected static final String DEFAULT_LACK_PERMISSION_TO_DOWNLOAD_MESSAGE =
"Cannot download files as permission was denied. Please provide permission to write to storage, in order to download files.";
protected WebViewConfig mWebViewConfig;
protected RNCWebChromeClient mWebChromeClient = null;
protected boolean mAllowsFullscreenVideo = false;
protected @Nullable String mUserAgent = null;
protected @Nullable String mUserAgentWithApplicationName = null;
protected @Nullable String mDownloadingMessage = null;
protected @Nullable String mLackPermissionToDownloadMessage = null;
public RNCWebViewManager() {
mWebViewConfig = new WebViewConfig() {
public void configWebView(WebView webView) {
}
};
}
public RNCWebViewManager(WebViewConfig webViewConfig) {
mWebViewConfig = webViewConfig;
}
@Override
public String getName() {
return REACT_CLASS;
}
protected RNCWebView createRNCWebViewInstance(ThemedReactContext reactContext) {
return new RNCWebView(reactContext);
}
@Override
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
protected WebView createViewInstance(ThemedReactContext reactContext) {
RNCWebView webView = createRNCWebViewInstance(reactContext);
setupWebChromeClient(reactContext, webView);
reactContext.addLifecycleEventListener(webView);
mWebViewConfig.configWebView(webView);
WebSettings settings = webView.getSettings();
settings.setBuiltInZoomControls(true);
settings.setDisplayZoomControls(false);
settings.setDomStorageEnabled(true);
settings.setSupportMultipleWindows(true);
settings.setAllowFileAccess(false);
settings.setAllowContentAccess(false);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
settings.setAllowFileAccessFromFileURLs(false);
setAllowUniversalAccessFromFileURLs(webView, false);
}
setMixedContentMode(webView, "never");
// Fixes broken full-screen modals/galleries due to body height being 0.
webView.setLayoutParams(
new LayoutParams(LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT));
if (ReactBuildConfig.DEBUG && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
WebView.setWebContentsDebuggingEnabled(true);
}
webView.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
webView.setIgnoreErrFailedForThisURL(url);
RNCWebViewModule module = getModule(reactContext);
DownloadManager.Request request;
try {
request = new DownloadManager.Request(Uri.parse(url));
} catch (IllegalArgumentException e) {
Log.w(TAG, "Unsupported URI, aborting download", e);
return;
}
String fileName = URLUtil.guessFileName(url, contentDisposition, mimetype);
String downloadMessage = "Downloading " + fileName;
//Attempt to add cookie, if it exists
URL urlObj = null;
try {
urlObj = new URL(url);
String baseUrl = urlObj.getProtocol() + "://" + urlObj.getHost();
String cookie = CookieManager.getInstance().getCookie(baseUrl);
request.addRequestHeader("Cookie", cookie);
} catch (MalformedURLException e) {
Log.w(TAG, "Error getting cookie for DownloadManager", e);
}
//Finish setting up request
request.addRequestHeader("User-Agent", userAgent);
request.setTitle(fileName);
request.setDescription(downloadMessage);
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
module.setDownloadRequest(request);
if (module.grantFileDownloaderPermissions(getDownloadingMessage(), getLackPermissionToDownloadMessage())) {
module.downloadFile(getDownloadingMessage());
}
}
});
return webView;
}
private String getDownloadingMessage() {
return mDownloadingMessage == null ? DEFAULT_DOWNLOADING_MESSAGE : mDownloadingMessage;
}
private String getLackPermissionToDownloadMessage() {
return mDownloadingMessage == null ? DEFAULT_LACK_PERMISSION_TO_DOWNLOAD_MESSAGE : mLackPermissionToDownloadMessage;
}
@ReactProp(name = "javaScriptEnabled")
public void setJavaScriptEnabled(WebView view, boolean enabled) {
view.getSettings().setJavaScriptEnabled(enabled);
}
@ReactProp(name = "setBuiltInZoomControls")
public void setBuiltInZoomControls(WebView view, boolean enabled) {
view.getSettings().setBuiltInZoomControls(enabled);
}
@ReactProp(name = "setDisplayZoomControls")
public void setDisplayZoomControls(WebView view, boolean enabled) {
view.getSettings().setDisplayZoomControls(enabled);
}
@ReactProp(name = "setSupportMultipleWindows")
public void setSupportMultipleWindows(WebView view, boolean enabled){
view.getSettings().setSupportMultipleWindows(enabled);
}
@ReactProp(name = "showsHorizontalScrollIndicator")
public void setShowsHorizontalScrollIndicator(WebView view, boolean enabled) {
view.setHorizontalScrollBarEnabled(enabled);
}
@ReactProp(name = "showsVerticalScrollIndicator")
public void setShowsVerticalScrollIndicator(WebView view, boolean enabled) {
view.setVerticalScrollBarEnabled(enabled);
}
@ReactProp(name = "downloadingMessage")
public void setDownloadingMessage(WebView view, String message) {
mDownloadingMessage = message;
}
@ReactProp(name = "lackPermissionToDownloadMessage")
public void setLackPermissionToDownlaodMessage(WebView view, String message) {
mLackPermissionToDownloadMessage = message;
}
@ReactProp(name = "cacheEnabled")
public void setCacheEnabled(WebView view, boolean enabled) {
view.getSettings().setCacheMode(enabled ? WebSettings.LOAD_DEFAULT : WebSettings.LOAD_NO_CACHE);
}
@ReactProp(name = "cacheMode")
public void setCacheMode(WebView view, String cacheModeString) {
Integer cacheMode;
switch (cacheModeString) {
case "LOAD_CACHE_ONLY":
cacheMode = WebSettings.LOAD_CACHE_ONLY;
break;
case "LOAD_CACHE_ELSE_NETWORK":
cacheMode = WebSettings.LOAD_CACHE_ELSE_NETWORK;
break;
case "LOAD_NO_CACHE":
cacheMode = WebSettings.LOAD_NO_CACHE;
break;
case "LOAD_DEFAULT":
default:
cacheMode = WebSettings.LOAD_DEFAULT;
break;
}
view.getSettings().setCacheMode(cacheMode);
}
@ReactProp(name = "androidHardwareAccelerationDisabled")
public void setHardwareAccelerationDisabled(WebView view, boolean disabled) {
if (disabled) {
view.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
}
@ReactProp(name = "androidLayerType")
public void setLayerType(WebView view, String layerTypeString) {
int layerType = View.LAYER_TYPE_NONE;
switch (layerTypeString) {
case "hardware":
layerType = View.LAYER_TYPE_HARDWARE;
break;
case "software":
layerType = View.LAYER_TYPE_SOFTWARE;
break;
}
view.setLayerType(layerType, null);
}
@ReactProp(name = "overScrollMode")
public void setOverScrollMode(WebView view, String overScrollModeString) {
Integer overScrollMode;
switch (overScrollModeString) {
case "never":
overScrollMode = View.OVER_SCROLL_NEVER;
break;
case "content":
overScrollMode = View.OVER_SCROLL_IF_CONTENT_SCROLLS;
break;
case "always":
default:
overScrollMode = View.OVER_SCROLL_ALWAYS;
break;
}
view.setOverScrollMode(overScrollMode);
}
@ReactProp(name = "nestedScrollEnabled")
public void setNestedScrollEnabled(WebView view, boolean enabled) {
((RNCWebView) view).setNestedScrollEnabled(enabled);
}
@ReactProp(name = "thirdPartyCookiesEnabled")
public void setThirdPartyCookiesEnabled(WebView view, boolean enabled) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
CookieManager.getInstance().setAcceptThirdPartyCookies(view, enabled);
}
}
@ReactProp(name = "textZoom")
public void setTextZoom(WebView view, int value) {
view.getSettings().setTextZoom(value);
}
@ReactProp(name = "scalesPageToFit")
public void setScalesPageToFit(WebView view, boolean enabled) {
view.getSettings().setLoadWithOverviewMode(enabled);
view.getSettings().setUseWideViewPort(enabled);
}
@ReactProp(name = "domStorageEnabled")
public void setDomStorageEnabled(WebView view, boolean enabled) {
view.getSettings().setDomStorageEnabled(enabled);
}
@ReactProp(name = "userAgent")
public void setUserAgent(WebView view, @Nullable String userAgent) {
if (userAgent != null) {
mUserAgent = userAgent;
} else {
mUserAgent = null;
}
this.setUserAgentString(view);
}
@ReactProp(name = "applicationNameForUserAgent")
public void setApplicationNameForUserAgent(WebView view, @Nullable String applicationName) {
if(applicationName != null) {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
String defaultUserAgent = WebSettings.getDefaultUserAgent(view.getContext());
mUserAgentWithApplicationName = defaultUserAgent + " " + applicationName;
}
} else {
mUserAgentWithApplicationName = null;
}
this.setUserAgentString(view);
}
protected void setUserAgentString(WebView view) {
if(mUserAgent != null) {
view.getSettings().setUserAgentString(mUserAgent);
} else if(mUserAgentWithApplicationName != null) {
view.getSettings().setUserAgentString(mUserAgentWithApplicationName);
} else if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
// handle unsets of `userAgent` prop as long as device is >= API 17
view.getSettings().setUserAgentString(WebSettings.getDefaultUserAgent(view.getContext()));
}
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
@ReactProp(name = "mediaPlaybackRequiresUserAction")
public void setMediaPlaybackRequiresUserAction(WebView view, boolean requires) {
view.getSettings().setMediaPlaybackRequiresUserGesture(requires);
}
@ReactProp(name = "javaScriptCanOpenWindowsAutomatically")
public void setJavaScriptCanOpenWindowsAutomatically(WebView view, boolean enabled) {
view.getSettings().setJavaScriptCanOpenWindowsAutomatically(enabled);
}
@ReactProp(name = "allowFileAccessFromFileURLs")
public void setAllowFileAccessFromFileURLs(WebView view, boolean allow) {
view.getSettings().setAllowFileAccessFromFileURLs(allow);
}
@ReactProp(name = "allowUniversalAccessFromFileURLs")
public void setAllowUniversalAccessFromFileURLs(WebView view, boolean allow) {
view.getSettings().setAllowUniversalAccessFromFileURLs(allow);
}
@ReactProp(name = "saveFormDataDisabled")
public void setSaveFormDataDisabled(WebView view, boolean disable) {
view.getSettings().setSaveFormData(!disable);
}
@ReactProp(name = "injectedJavaScript")
public void setInjectedJavaScript(WebView view, @Nullable String injectedJavaScript) {
((RNCWebView) view).setInjectedJavaScript(injectedJavaScript);
}
@ReactProp(name = "injectedJavaScriptBeforeContentLoaded")
public void setInjectedJavaScriptBeforeContentLoaded(WebView view, @Nullable String injectedJavaScriptBeforeContentLoaded) {
((RNCWebView) view).setInjectedJavaScriptBeforeContentLoaded(injectedJavaScriptBeforeContentLoaded);
}
@ReactProp(name = "injectedJavaScriptForMainFrameOnly")
public void setInjectedJavaScriptForMainFrameOnly(WebView view, boolean enabled) {
((RNCWebView) view).setInjectedJavaScriptForMainFrameOnly(enabled);
}
@ReactProp(name = "injectedJavaScriptBeforeContentLoadedForMainFrameOnly")
public void setInjectedJavaScriptBeforeContentLoadedForMainFrameOnly(WebView view, boolean enabled) {
((RNCWebView) view).setInjectedJavaScriptBeforeContentLoadedForMainFrameOnly(enabled);
}
@ReactProp(name = "messagingEnabled")
public void setMessagingEnabled(WebView view, boolean enabled) {
((RNCWebView) view).setMessagingEnabled(enabled);
}
@ReactProp(name = "messagingModuleName")
public void setMessagingModuleName(WebView view, String moduleName) {
((RNCWebView) view).setMessagingModuleName(moduleName);
}
@ReactProp(name = "incognito")
public void setIncognito(WebView view, boolean enabled) {
// Don't do anything when incognito is disabled
if (!enabled) {
return;
}
// Remove all previous cookies
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
CookieManager.getInstance().removeAllCookies(null);
} else {
CookieManager.getInstance().removeAllCookie();
}
// Disable caching
view.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
view.clearHistory();
view.clearCache(true);
// No form data or autofill enabled
view.clearFormData();
view.getSettings().setSavePassword(false);
view.getSettings().setSaveFormData(false);
}
@ReactProp(name = "source")
public void setSource(WebView view, @Nullable ReadableMap source) {
if (source != null) {
if (source.hasKey("html")) {
String html = source.getString("html");
String baseUrl = source.hasKey("baseUrl") ? source.getString("baseUrl") : "";
view.loadDataWithBaseURL(baseUrl, html, HTML_MIME_TYPE, HTML_ENCODING, null);
return;
}
if (source.hasKey("uri")) {
String url = source.getString("uri");
String previousUrl = view.getUrl();
if (previousUrl != null && previousUrl.equals(url)) {
return;
}
if (source.hasKey("method")) {
String method = source.getString("method");
if (method.equalsIgnoreCase(HTTP_METHOD_POST)) {
byte[] postData = null;
if (source.hasKey("body")) {
String body = source.getString("body");
try {
postData = body.getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
postData = body.getBytes();
}
}
if (postData == null) {
postData = new byte[0];
}
view.postUrl(url, postData);
return;
}
}
HashMap<String, String> headerMap = new HashMap<>();
if (source.hasKey("headers")) {
ReadableMap headers = source.getMap("headers");
ReadableMapKeySetIterator iter = headers.keySetIterator();
while (iter.hasNextKey()) {
String key = iter.nextKey();
if ("user-agent".equals(key.toLowerCase(Locale.ENGLISH))) {
if (view.getSettings() != null) {
view.getSettings().setUserAgentString(headers.getString(key));
}
} else {
headerMap.put(key, headers.getString(key));
}
}
}
view.loadUrl(url, headerMap);
return;
}
}
view.loadUrl(BLANK_URL);
}
@ReactProp(name = "basicAuthCredential")
public void setBasicAuthCredential(WebView view, @Nullable ReadableMap credential) {
@Nullable BasicAuthCredential basicAuthCredential = null;
if (credential != null) {
if (credential.hasKey("username") && credential.hasKey("password")) {
String username = credential.getString("username");
String password = credential.getString("password");
basicAuthCredential = new BasicAuthCredential(username, password);
}
}
((RNCWebView) view).setBasicAuthCredential(basicAuthCredential);
}
@ReactProp(name = "onContentSizeChange")
public void setOnContentSizeChange(WebView view, boolean sendContentSizeChangeEvents) {
((RNCWebView) view).setSendContentSizeChangeEvents(sendContentSizeChangeEvents);
}
@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);
}
}
}
@ReactProp(name = "urlPrefixesForDefaultIntent")
public void setUrlPrefixesForDefaultIntent(
WebView view,
@Nullable ReadableArray urlPrefixesForDefaultIntent) {
RNCWebViewClient client = ((RNCWebView) view).getRNCWebViewClient();
if (client != null && urlPrefixesForDefaultIntent != null) {
client.setUrlPrefixesForDefaultIntent(urlPrefixesForDefaultIntent);
}
}
@ReactProp(name = "allowsFullscreenVideo")
public void setAllowsFullscreenVideo(
WebView view,
@Nullable Boolean allowsFullscreenVideo) {
mAllowsFullscreenVideo = allowsFullscreenVideo != null && allowsFullscreenVideo;
setupWebChromeClient((ReactContext)view.getContext(), view);
}
@ReactProp(name = "allowFileAccess")
public void setAllowFileAccess(
WebView view,
@Nullable Boolean allowFileAccess) {
view.getSettings().setAllowFileAccess(allowFileAccess != null && allowFileAccess);
}
@ReactProp(name = "geolocationEnabled")
public void setGeolocationEnabled(
WebView view,
@Nullable Boolean isGeolocationEnabled) {
view.getSettings().setGeolocationEnabled(isGeolocationEnabled != null && isGeolocationEnabled);
}
@ReactProp(name = "onScroll")
public void setOnScroll(WebView view, boolean hasScrollEvent) {
((RNCWebView) view).setHasScrollEvent(hasScrollEvent);
}
@ReactProp(name = "forceDarkOn")
public void setForceDarkOn(WebView view, boolean enabled) {
// Only Android 10+ support dark mode
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.P) {
// Switch WebView dark mode
if (WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {
int forceDarkMode = enabled ? WebSettingsCompat.FORCE_DARK_ON : WebSettingsCompat.FORCE_DARK_OFF;
WebSettingsCompat.setForceDark(view.getSettings(), forceDarkMode);
}
// Set how WebView content should be darkened.
// PREFER_WEB_THEME_OVER_USER_AGENT_DARKENING: checks for the "color-scheme" <meta> tag.
// If present, it uses media queries. If absent, it applies user-agent (automatic)
// More information about Force Dark Strategy can be found here:
// https://developer.android.com/reference/androidx/webkit/WebSettingsCompat#setForceDarkStrategy(android.webkit.WebSettings)
if (enabled && WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK_STRATEGY)) {
WebSettingsCompat.setForceDarkStrategy(view.getSettings(), WebSettingsCompat.DARK_STRATEGY_PREFER_WEB_THEME_OVER_USER_AGENT_DARKENING);
}
}
}
@ReactProp(name = "minimumFontSize")
public void setMinimumFontSize(WebView view, int fontSize) {
view.getSettings().setMinimumFontSize(fontSize);
}
@Override
protected void addEventEmitters(ThemedReactContext reactContext, WebView view) {
// Do not register default touch emitter and let WebView implementation handle touches
view.setWebViewClient(new RNCWebViewClient());
}
@Override
public Map getExportedCustomDirectEventTypeConstants() {
Map export = super.getExportedCustomDirectEventTypeConstants();
if (export == null) {
export = MapBuilder.newHashMap();
}
// Default events but adding them here explicitly for clarity
export.put(TopLoadingStartEvent.EVENT_NAME, MapBuilder.of("registrationName", "onLoadingStart"));
export.put(TopLoadingFinishEvent.EVENT_NAME, MapBuilder.of("registrationName", "onLoadingFinish"));
export.put(TopLoadingErrorEvent.EVENT_NAME, MapBuilder.of("registrationName", "onLoadingError"));
export.put(TopMessageEvent.EVENT_NAME, MapBuilder.of("registrationName", "onMessage"));
// !Default events but adding them here explicitly for clarity
export.put(TopLoadingProgressEvent.EVENT_NAME, MapBuilder.of("registrationName", "onLoadingProgress"));
export.put(TopShouldStartLoadWithRequestEvent.EVENT_NAME, MapBuilder.of("registrationName", "onShouldStartLoadWithRequest"));
export.put(ScrollEventType.getJSEventName(ScrollEventType.SCROLL), MapBuilder.of("registrationName", "onScroll"));
export.put(TopHttpErrorEvent.EVENT_NAME, MapBuilder.of("registrationName", "onHttpError"));
export.put(TopRenderProcessGoneEvent.EVENT_NAME, MapBuilder.of("registrationName", "onRenderProcessGone"));
return export;
}
@Override
public @Nullable
Map<String, Integer> getCommandsMap() {
return MapBuilder.<String, Integer>builder()
.put("goBack", COMMAND_GO_BACK)
.put("goForward", COMMAND_GO_FORWARD)
.put("reload", COMMAND_RELOAD)
.put("stopLoading", COMMAND_STOP_LOADING)
.put("postMessage", COMMAND_POST_MESSAGE)
.put("injectJavaScript", COMMAND_INJECT_JAVASCRIPT)
.put("loadUrl", COMMAND_LOAD_URL)
.put("requestFocus", COMMAND_FOCUS)
.put("clearFormData", COMMAND_CLEAR_FORM_DATA)
.put("clearCache", COMMAND_CLEAR_CACHE)
.put("clearHistory", COMMAND_CLEAR_HISTORY)
.build();
}
@Override
public void receiveCommand(@NonNull WebView root, String commandId, @Nullable ReadableArray args) {
switch (commandId) {
case "goBack":
root.goBack();
break;
case "goForward":
root.goForward();
break;
case "reload":
root.reload();
break;
case "stopLoading":
root.stopLoading();
break;
case "postMessage":
try {
RNCWebView reactWebView = (RNCWebView) root;
JSONObject eventInitDict = new JSONObject();
eventInitDict.put("data", args.getString(0));
reactWebView.evaluateJavascriptWithFallback("(function () {" +
"var event;" +
"var data = " + eventInitDict.toString() + ";" +
"try {" +
"event = new MessageEvent('message', data);" +
"} catch (e) {" +
"event = document.createEvent('MessageEvent');" +
"event.initMessageEvent('message', true, true, data.data, data.origin, data.lastEventId, data.source);" +
"}" +
"document.dispatchEvent(event);" +
"})();");
} catch (JSONException e) {
throw new RuntimeException(e);
}
break;
case "injectJavaScript":
RNCWebView reactWebView = (RNCWebView) root;
reactWebView.evaluateJavascriptWithFallback(args.getString(0));
break;
case "loadUrl":
if (args == null) {
throw new RuntimeException("Arguments for loading an url are null!");
}
((RNCWebView) root).progressChangedFilter.setWaitingForCommandLoadUrl(false);
root.loadUrl(args.getString(0));
break;
case "requestFocus":
root.requestFocus();
break;
case "clearFormData":
root.clearFormData();
break;
case "clearCache":
boolean includeDiskFiles = args != null && args.getBoolean(0);
root.clearCache(includeDiskFiles);
break;
case "clearHistory":
root.clearHistory();
break;
}
super.receiveCommand(root, commandId, args);
}
@Override
public void onDropViewInstance(WebView webView) {
super.onDropViewInstance(webView);
((ThemedReactContext) webView.getContext()).removeLifecycleEventListener((RNCWebView) webView);
((RNCWebView) webView).cleanupCallbacksAndDestroy();
mWebChromeClient = null;
}
public static RNCWebViewModule getModule(ReactContext reactContext) {
return reactContext.getNativeModule(RNCWebViewModule.class);
}
protected void setupWebChromeClient(ReactContext reactContext, WebView webView) {
Activity activity = reactContext.getCurrentActivity();
if (mAllowsFullscreenVideo && activity != null) {
int initialRequestedOrientation = activity.getRequestedOrientation();
mWebChromeClient = new RNCWebChromeClient(reactContext, webView) {
@Override
public Bitmap getDefaultVideoPoster() {
return Bitmap.createBitmap(50, 50, Bitmap.Config.ARGB_8888);
}
@Override
public void onShowCustomView(View view, CustomViewCallback callback) {
if (mVideoView != null) {
callback.onCustomViewHidden();
return;
}
mVideoView = view;
mCustomViewCallback = callback;
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
mVideoView.setSystemUiVisibility(FULLSCREEN_SYSTEM_UI_VISIBILITY);
activity.getWindow().setFlags(
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
);
}
mVideoView.setBackgroundColor(Color.BLACK);
// Since RN's Modals interfere with the View hierarchy
// we will decide which View to hide if the hierarchy
// does not match (i.e., the WebView is within a Modal)
// NOTE: We could use `mWebView.getRootView()` instead of `getRootView()`
// but that breaks the Modal's styles and layout, so we need this to render
// in the main View hierarchy regardless
ViewGroup rootView = getRootView();
rootView.addView(mVideoView, FULLSCREEN_LAYOUT_PARAMS);
// Different root views, we are in a Modal
if (rootView.getRootView() != mWebView.getRootView()) {
mWebView.getRootView().setVisibility(View.GONE);
} else {
// Same view hierarchy (no Modal), just hide the WebView then
mWebView.setVisibility(View.GONE);
}
mReactContext.addLifecycleEventListener(this);
}
@Override
public void onHideCustomView() {
if (mVideoView == null) {
return;
}
// Same logic as above
ViewGroup rootView = getRootView();
if (rootView.getRootView() != mWebView.getRootView()) {
mWebView.getRootView().setVisibility(View.VISIBLE);
} else {
// Same view hierarchy (no Modal)
mWebView.setVisibility(View.VISIBLE);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
}
rootView.removeView(mVideoView);
mCustomViewCallback.onCustomViewHidden();
mVideoView = null;
mCustomViewCallback = null;
activity.setRequestedOrientation(initialRequestedOrientation);
mReactContext.removeLifecycleEventListener(this);
}
};
webView.setWebChromeClient(mWebChromeClient);
} else {
if (mWebChromeClient != null) {
mWebChromeClient.onHideCustomView();
}
mWebChromeClient = new RNCWebChromeClient(reactContext, webView) {
@Override
public Bitmap getDefaultVideoPoster() {
return Bitmap.createBitmap(50, 50, Bitmap.Config.ARGB_8888);
}
};
webView.setWebChromeClient(mWebChromeClient);
}
}
protected static class RNCWebViewClient extends WebViewClient {
protected boolean mLastLoadFailed = false;
protected @Nullable
ReadableArray mUrlPrefixesForDefaultIntent;
protected RNCWebView.ProgressChangedFilter progressChangedFilter = null;
protected @Nullable String ignoreErrFailedForThisURL = null;
protected @Nullable BasicAuthCredential basicAuthCredential = null;
public void setIgnoreErrFailedForThisURL(@Nullable String url) {
ignoreErrFailedForThisURL = url;
}
public void setBasicAuthCredential(@Nullable BasicAuthCredential credential) {
basicAuthCredential = credential;
}
@Override
public void onPageFinished(WebView webView, String url) {
super.onPageFinished(webView, url);
if (!mLastLoadFailed) {
RNCWebView reactWebView = (RNCWebView) webView;
reactWebView.callInjectedJavaScript();
emitFinishEvent(webView, url);
}
}
@Override
public void onPageStarted(WebView webView, String url, Bitmap favicon) {
super.onPageStarted(webView, url, favicon);
mLastLoadFailed = false;
RNCWebView reactWebView = (RNCWebView) webView;
reactWebView.callInjectedJavaScriptBeforeContentLoaded();
((RNCWebView) webView).dispatchEvent(
webView,
new TopLoadingStartEvent(
webView.getId(),
createWebViewEvent(webView, url)));
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
final RNCWebView rncWebView = (RNCWebView) view;
final boolean isJsDebugging = ((ReactContext) view.getContext()).getJavaScriptContextHolder().get() == 0;
if (!isJsDebugging && rncWebView.mCatalystInstance != null) {
final Pair<Integer, AtomicReference<ShouldOverrideCallbackState>> lock = RNCWebViewModule.shouldOverrideUrlLoadingLock.getNewLock();
final int lockIdentifier = lock.first;
final AtomicReference<ShouldOverrideCallbackState> lockObject = lock.second;
final WritableMap event = createWebViewEvent(view, url);
event.putInt("lockIdentifier", lockIdentifier);
rncWebView.sendDirectMessage("onShouldStartLoadWithRequest", event);
try {
assert lockObject != null;
synchronized (lockObject) {
final long startTime = SystemClock.elapsedRealtime();
while (lockObject.get() == ShouldOverrideCallbackState.UNDECIDED) {
if (SystemClock.elapsedRealtime() - startTime > SHOULD_OVERRIDE_URL_LOADING_TIMEOUT) {
FLog.w(TAG, "Did not receive response to shouldOverrideUrlLoading in time, defaulting to allow loading.");
RNCWebViewModule.shouldOverrideUrlLoadingLock.removeLock(lockIdentifier);
return false;
}
lockObject.wait(SHOULD_OVERRIDE_URL_LOADING_TIMEOUT);
}
}
} catch (InterruptedException e) {
FLog.e(TAG, "shouldOverrideUrlLoading was interrupted while waiting for result.", e);
RNCWebViewModule.shouldOverrideUrlLoadingLock.removeLock(lockIdentifier);
return false;
}
final boolean shouldOverride = lockObject.get() == ShouldOverrideCallbackState.SHOULD_OVERRIDE;
RNCWebViewModule.shouldOverrideUrlLoadingLock.removeLock(lockIdentifier);
return shouldOverride;
} else {
FLog.w(TAG, "Couldn't use blocking synchronous call for onShouldStartLoadWithRequest due to debugging or missing Catalyst instance, falling back to old event-and-load.");
progressChangedFilter.setWaitingForCommandLoadUrl(true);
((RNCWebView) view).dispatchEvent(
view,
new TopShouldStartLoadWithRequestEvent(
view.getId(),
createWebViewEvent(view, url)));
return true;
}
}
@TargetApi(Build.VERSION_CODES.N)
@Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
final String url = request.getUrl().toString();
return this.shouldOverrideUrlLoading(view, url);
}
@Override
public void onReceivedHttpAuthRequest(WebView view, HttpAuthHandler handler, String host, String realm) {
if (basicAuthCredential != null) {
handler.proceed(basicAuthCredential.username, basicAuthCredential.password);