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import 'dart:io';
import 'dart:async';
import 'dart:collection';
import 'dart:typed_data';
import 'dart:convert';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter/gestures.dart';
import 'package:html/parser.dart' show parse;
import 'types.dart';
import 'in_app_browser.dart';
import 'webview_options.dart';
const javaScriptHandlerForbiddenNames = ["onLoadResource", "shouldInterceptAjaxRequest", "onAjaxReadyStateChange", "onAjaxProgress", "shouldInterceptFetchRequest"];
///InAppWebView Widget class.
///
///Flutter Widget for adding an **inline native WebView** integrated in the flutter widget tree.
class InAppWebView extends StatefulWidget {
///Event fired when the [InAppWebView] is created.
final void Function(InAppWebViewController controller) onWebViewCreated;
///Event fired when the [InAppWebView] starts to load an [url].
final void Function(InAppWebViewController controller, String url) onLoadStart;
///Event fired when the [InAppWebView] finishes loading an [url].
final void Function(InAppWebViewController controller, String url) onLoadStop;
///Event fired when the [InAppWebView] encounters an error loading an [url].
final void Function(InAppWebViewController controller, String url, int code, String message) onLoadError;
///Event fired when the [InAppWebView] main page receives an HTTP error.
///
///[url] represents the url of the main page that received the HTTP error.
///
///[statusCode] represents the status code of the response. HTTP errors have status codes >= 400.
///
///[description] represents the description of the HTTP error. On iOS, it is always an empty string.
///
///**NOTE**: available on Android 23+.
final void Function(InAppWebViewController controller, String url, int statusCode, String description) onLoadHttpError;
///Event fired when the current [progress] of loading a page is changed.
final void Function(InAppWebViewController controller, int progress) onProgressChanged;
///Event fired when the [InAppWebView] receives a [ConsoleMessage].
final void Function(InAppWebViewController controller, ConsoleMessage consoleMessage) onConsoleMessage;
///Give the host application a chance to take control when a URL is about to be loaded in the current WebView.
///
///**NOTE**: In order to be able to listen this event, you need to set [InAppWebViewOptions.useShouldOverrideUrlLoading] option to `true`.
final void Function(InAppWebViewController controller, String url) shouldOverrideUrlLoading;
///Event fired when the [InAppWebView] loads a resource.
///
///**NOTE**: In order to be able to listen this event, you need to set [InAppWebViewOptions.useOnLoadResource] and [InAppWebViewOptions.javaScriptEnabled] options to `true`.
final void Function(InAppWebViewController controller, LoadedResource resource) onLoadResource;
///Event fired when the [InAppWebView] scrolls.
///
///[x] represents the current horizontal scroll origin in pixels.
///
///[y] represents the current vertical scroll origin in pixels.
final void Function(InAppWebViewController controller, int x, int y) onScrollChanged;
///Event fired when [InAppWebView] recognizes and starts a downloadable file.
///
///[url] represents the url of the file.
///
///**NOTE**: In order to be able to listen this event, you need to set [InAppWebViewOptions.useOnDownloadStart] option to `true`.
final void Function(InAppWebViewController controller, String url) onDownloadStart;
///Event fired when the [InAppWebView] finds the `custom-scheme` while loading a resource. Here you can handle the url request and return a [CustomSchemeResponse] to load a specific resource encoded to `base64`.
///
///[scheme] represents the scheme of the url.
///
///[url] represents the url of the request.
final Future<CustomSchemeResponse> Function(InAppWebViewController controller, String scheme, String url) onLoadResourceCustomScheme;
///Event fired when the [InAppWebView] tries to open a link with `target="_blank"`.
///
///[url] represents the url of the link.
///
///**NOTE**: In order to be able to listen this event, you need to set [InAppWebViewOptions.useOnTargetBlank] option to `true`.
final void Function(InAppWebViewController controller, String url) onTargetBlank;
///Event that notifies the host application that web content from the specified origin is attempting to use the Geolocation API, but no permission state is currently set for that origin.
///Note that for applications targeting Android N and later SDKs (API level > `Build.VERSION_CODES.M`) this method is only called for requests originating from secure origins such as https.
///On non-secure origins geolocation requests are automatically denied.
///
///[origin] represents the origin of the web content attempting to use the Geolocation API.
///
///**NOTE**: available only on Android.
final Future<GeolocationPermissionShowPromptResponse> Function(InAppWebViewController controller, String origin) onGeolocationPermissionsShowPrompt;
///Event fired when javascript calls the `alert()` method to display an alert dialog.
///If [JsAlertResponse.handledByClient] is `true`, the webview will assume that the client will handle the dialog.
///
///[message] represents the message to be displayed in the alert dialog.
final Future<JsAlertResponse> Function(InAppWebViewController controller, String message) onJsAlert;
///Event fired when javascript calls the `confirm()` method to display a confirm dialog.
///If [JsConfirmResponse.handledByClient] is `true`, the webview will assume that the client will handle the dialog.
///
///[message] represents the message to be displayed in the alert dialog.
final Future<JsConfirmResponse> Function(InAppWebViewController controller, String message) onJsConfirm;
///Event fired when javascript calls the `prompt()` method to display a prompt dialog.
///If [JsPromptResponse.handledByClient] is `true`, the webview will assume that the client will handle the dialog.
///
///[message] represents the message to be displayed in the alert dialog.
///
///[defaultValue] represents the default value displayed in the prompt dialog.
final Future<JsPromptResponse> Function(InAppWebViewController controller, String message, String defaultValue) onJsPrompt;
///Event fired when the webview notifies that a loading URL has been flagged by Safe Browsing.
///The default behavior is to show an interstitial to the user, with the reporting checkbox visible.
///
///[url] represents the url of the request.
///
///[threatType] represents the reason the resource was caught by Safe Browsing, corresponding to a [SafeBrowsingThreat].
///
///**NOTE**: available only on Android.
final Future<SafeBrowsingResponse> Function(InAppWebViewController controller, String url, SafeBrowsingThreat threatType) onSafeBrowsingHit;
///Event fired when the WebView received an HTTP authentication request. The default behavior is to cancel the request.
///
///[challenge] contains data about host, port, protocol, realm, etc. as specified in the [HttpAuthChallenge].
final Future<HttpAuthResponse> Function(InAppWebViewController controller, HttpAuthChallenge challenge) onReceivedHttpAuthRequest;
///Event fired when the WebView need to perform server trust authentication (certificate validation).
///The host application must return either [ServerTrustAuthResponse] instance with [ServerTrustAuthResponseAction.CANCEL] or [ServerTrustAuthResponseAction.PROCEED].
///
///[challenge] contains data about host, port, protocol, realm, etc. as specified in the [ServerTrustChallenge].
final Future<ServerTrustAuthResponse> Function(InAppWebViewController controller, ServerTrustChallenge challenge) onReceivedServerTrustAuthRequest;
///Notify the host application to handle a SSL client certificate request.
///Webview stores the response in memory (for the life of the application) if [ClientCertResponseAction.PROCEED] or [ClientCertResponseAction.CANCEL]
///is called and does not call [onReceivedClientCertRequest] again for the same host and port pair.
///Note that, multiple layers in chromium network stack might be caching the responses.
///
///[challenge] contains data about host, port, protocol, realm, etc. as specified in the [ClientCertChallenge].
final Future<ClientCertResponse> Function(InAppWebViewController controller, ClientCertChallenge challenge) onReceivedClientCertRequest;
///Event fired as find-on-page operations progress.
///The listener may be notified multiple times while the operation is underway, and the numberOfMatches value should not be considered final unless [isDoneCounting] is true.
///
///[activeMatchOrdinal] represents the zero-based ordinal of the currently selected match.
///
///[numberOfMatches] represents how many matches have been found.
///
///[isDoneCounting] whether the find operation has actually completed.
final void Function(InAppWebViewController controller, int activeMatchOrdinal, int numberOfMatches, bool isDoneCounting) onFindResultReceived;
///Event fired when an `XMLHttpRequest` is sent to a server.
///It gives the host application a chance to take control over the request before sending it.
///
///[ajaxRequest] represents the `XMLHttpRequest`.
///
///**NOTE**: In order to be able to listen this event, you need to set [InAppWebViewOptions.useShouldInterceptAjaxRequest] option to `true`.
///Also, unlike iOS that has [WKUserScript](https://developer.apple.com/documentation/webkit/wkuserscript) that
///can inject javascript code right after the document element is created but before any other content is loaded, in Android the javascript code
///used to intercept ajax requests is loaded as soon as possible so it won't be instantaneous as iOS but just after some milliseconds (< ~100ms).
///Inside the `window.addEventListener("flutterInAppBrowserPlatformReady")` event, the ajax requests will be intercept for sure.
final Future<AjaxRequest> Function(InAppWebViewController controller, AjaxRequest ajaxRequest) shouldInterceptAjaxRequest;
///Event fired whenever the `readyState` attribute of an `XMLHttpRequest` changes.
///It gives the host application a chance to abort the request.
///
///[ajaxRequest] represents the [XMLHttpRequest].
///
///**NOTE**: In order to be able to listen this event, you need to set [InAppWebViewOptions.useShouldInterceptAjaxRequest] option to `true`.
///Also, unlike iOS that has [WKUserScript](https://developer.apple.com/documentation/webkit/wkuserscript) that
///can inject javascript code right after the document element is created but before any other content is loaded, in Android the javascript code
///used to intercept ajax requests is loaded as soon as possible so it won't be instantaneous as iOS but just after some milliseconds (< ~100ms).
///Inside the `window.addEventListener("flutterInAppBrowserPlatformReady")` event, the ajax requests will be intercept for sure.
final Future<AjaxRequestAction> Function(InAppWebViewController controller, AjaxRequest ajaxRequest) onAjaxReadyStateChange;
///Event fired as an `XMLHttpRequest` progress.
///It gives the host application a chance to abort the request.
///
///[ajaxRequest] represents the [XMLHttpRequest].
///
///**NOTE**: In order to be able to listen this event, you need to set [InAppWebViewOptions.useShouldInterceptAjaxRequest] option to `true`.
///Also, unlike iOS that has [WKUserScript](https://developer.apple.com/documentation/webkit/wkuserscript) that
///can inject javascript code right after the document element is created but before any other content is loaded, in Android the javascript code
///used to intercept ajax requests is loaded as soon as possible so it won't be instantaneous as iOS but just after some milliseconds (< ~100ms).
///Inside the `window.addEventListener("flutterInAppBrowserPlatformReady")` event, the ajax requests will be intercept for sure.
final Future<AjaxRequestAction> Function(InAppWebViewController controller, AjaxRequest ajaxRequest) onAjaxProgress;
///Event fired when a request is sent to a server through [Fetch API](https://developer.mozilla.org/it/docs/Web/API/Fetch_API).
///It gives the host application a chance to take control over the request before sending it.
///
///[fetchRequest] represents a resource request.
///
///**NOTE**: In order to be able to listen this event, you need to set [InAppWebViewOptions.useShouldInterceptFetchRequest] option to `true`.
///Also, unlike iOS that has [WKUserScript](https://developer.apple.com/documentation/webkit/wkuserscript) that
///can inject javascript code right after the document element is created but before any other content is loaded, in Android the javascript code
///used to intercept fetch requests is loaded as soon as possible so it won't be instantaneous as iOS but just after some milliseconds (< ~100ms).
///Inside the `window.addEventListener("flutterInAppBrowserPlatformReady")` event, the fetch requests will be intercept for sure.
final Future<FetchRequest> Function(InAppWebViewController controller, FetchRequest fetchRequest) shouldInterceptFetchRequest;
///Event fired when the navigation state of the [InAppWebView] changes throught the usage of
///javascript **[History API](https://developer.mozilla.org/en-US/docs/Web/API/History_API)** functions (`pushState()`, `replaceState()`) and `onpopstate` event.
///
///Also, the event is fired when the javascript `window.location` changes without reloading the webview (for example appending or modifying an hash to the url).
///
///[url] represents the new url.
final void Function(InAppWebViewController controller, String url) onNavigationStateChange;
///Event fired when the webview is requesting permission to access the specified resources and the permission currently isn't granted or denied.
///
///[origin] represents the origin of the web page which is trying to access the restricted resources.
///
///[resources] represents the array of resources the web content wants to access.
///
///**NOTE**: available only on Android 23+.
final Future<PermissionRequestResponse> Function(InAppWebViewController controller, String origin, List<String> resources) onPermissionRequest;
///Initial url that will be loaded.
final String initialUrl;
///Initial asset file that will be loaded. See [InAppWebView.loadFile()] for explanation.
final String initialFile;
///Initial [InAppWebViewInitialData] that will be loaded.
final InAppWebViewInitialData initialData;
///Initial headers that will be used.
final Map<String, String> initialHeaders;
///Initial options that will be used.
final InAppWebViewWidgetOptions initialOptions;
/// `gestureRecognizers` specifies which gestures should be consumed by the web view.
/// It is possible for other gesture recognizers to be competing with the web view on pointer
/// events, e.g if the web view is inside a [ListView] the [ListView] will want to handle
/// vertical drags. The web view will claim gestures that are recognized by any of the
/// recognizers on this list.
/// When `gestureRecognizers` is empty or null, the web view will only handle pointer events for gestures that
/// were not claimed by any other gesture recognizer.
final Set<Factory<OneSequenceGestureRecognizer>> gestureRecognizers;
const InAppWebView({
Key key,
this.initialUrl = "about:blank",
this.initialFile,
this.initialData,
this.initialHeaders = const {},
this.initialOptions,
this.onWebViewCreated,
this.onLoadStart,
this.onLoadStop,
this.onLoadError,
this.onLoadHttpError,
this.onConsoleMessage,
this.onProgressChanged,
this.shouldOverrideUrlLoading,
this.onLoadResource,
this.onScrollChanged,
this.onDownloadStart,
this.onLoadResourceCustomScheme,
this.onTargetBlank,
this.onGeolocationPermissionsShowPrompt,
this.onJsAlert,
this.onJsConfirm,
this.onJsPrompt,
this.onSafeBrowsingHit,
this.onReceivedHttpAuthRequest,
this.onReceivedServerTrustAuthRequest,
this.onReceivedClientCertRequest,
this.onFindResultReceived,
this.shouldInterceptAjaxRequest,
this.onAjaxReadyStateChange,
this.onAjaxProgress,
this.shouldInterceptFetchRequest,
this.onNavigationStateChange,
this.onPermissionRequest,
this.gestureRecognizers,
}) : super(key: key);
@override
_InAppWebViewState createState() => _InAppWebViewState();
}
class _InAppWebViewState extends State<InAppWebView> {
InAppWebViewController _controller;
@override
Widget build(BuildContext context) {
Map<String, dynamic> initialOptions = {};
initialOptions.addAll(widget.initialOptions.inAppWebViewOptions?.toMap() ?? {});
if (Platform.isAndroid)
initialOptions.addAll(widget.initialOptions.androidInAppWebViewOptions?.toMap() ?? {});
else if (Platform.isIOS)
initialOptions.addAll(widget.initialOptions.iosInAppWebViewOptions?.toMap() ?? {});
if (defaultTargetPlatform == TargetPlatform.android) {
return AndroidView(
viewType: 'com.pichillilorenzo/flutter_inappwebview',
onPlatformViewCreated: _onPlatformViewCreated,
gestureRecognizers: widget.gestureRecognizers,
layoutDirection: TextDirection.rtl,
creationParams: <String, dynamic>{
'initialUrl': widget.initialUrl,
'initialFile': widget.initialFile,
'initialData': widget.initialData?.toMap(),
'initialHeaders': widget.initialHeaders,
'initialOptions': initialOptions
},
creationParamsCodec: const StandardMessageCodec(),
);
// onLongPress issue: https://github.com/flutter/plugins/blob/f31d16a6ca0c4bd6849cff925a00b6823973696b/packages/webview_flutter/lib/src/webview_android.dart#L31
/*return GestureDetector(
onLongPress: () {},
excludeFromSemantics: true,
child: AndroidView(
viewType: 'com.pichillilorenzo/flutter_inappwebview',
onPlatformViewCreated: _onPlatformViewCreated,
gestureRecognizers: widget.gestureRecognizers,
layoutDirection: TextDirection.rtl,
creationParams: <String, dynamic>{
'initialUrl': widget.initialUrl,
'initialFile': widget.initialFile,
'initialData': widget.initialData?.toMap(),
'initialHeaders': widget.initialHeaders,
'initialOptions': initialOptions
},
creationParamsCodec: const StandardMessageCodec(),
),
);*/
} else if (defaultTargetPlatform == TargetPlatform.iOS) {
return UiKitView(
viewType: 'com.pichillilorenzo/flutter_inappwebview',
onPlatformViewCreated: _onPlatformViewCreated,
gestureRecognizers: widget.gestureRecognizers,
creationParams: <String, dynamic>{
'initialUrl': widget.initialUrl,
'initialFile': widget.initialFile,
'initialData': widget.initialData?.toMap(),
'initialHeaders': widget.initialHeaders,
'initialOptions': initialOptions
},
creationParamsCodec: const StandardMessageCodec(),
);
}
return Text(
'$defaultTargetPlatform is not yet supported by the flutter_inappbrowser plugin');
}
@override
void didUpdateWidget(InAppWebView oldWidget) {
super.didUpdateWidget(oldWidget);
}
@override
void dispose(){
super.dispose();
}
void _onPlatformViewCreated(int id) {
_controller = InAppWebViewController(id, widget);
if (widget.onWebViewCreated != null) {
widget.onWebViewCreated(_controller);
}
}
}
/// Controls an [InAppWebView] widget instance.
///
/// An [InAppWebViewController] instance can be obtained by setting the [InAppWebView.onWebViewCreated]
/// callback for an [InAppWebView] widget.
class InAppWebViewController {
InAppWebView _widget;
MethodChannel _channel;
Map<String, JavaScriptHandlerCallback> javaScriptHandlersMap = HashMap<String, JavaScriptHandlerCallback>();
// ignore: unused_field
bool _isOpened = false;
// ignore: unused_field
int _id;
String _inAppBrowserUuid;
InAppBrowser _inAppBrowser;
InAppWebViewController(int id, InAppWebView widget) {
this._id = id;
this._channel = MethodChannel('com.pichillilorenzo/flutter_inappwebview_$id');
this._channel.setMethodCallHandler(handleMethod);
this._widget = widget;
}
InAppWebViewController.fromInAppBrowser(String uuid, MethodChannel channel, InAppBrowser inAppBrowser) {
this._inAppBrowserUuid = uuid;
this._channel = channel;
this._inAppBrowser = inAppBrowser;
}
Future<dynamic> handleMethod(MethodCall call) async {
switch(call.method) {
case "onLoadStart":
String url = call.arguments["url"];
if (_widget != null && _widget.onLoadStart != null)
_widget.onLoadStart(this, url);
else if (_inAppBrowser != null)
_inAppBrowser.onLoadStart(url);
break;
case "onLoadStop":
String url = call.arguments["url"];
if (_widget != null && _widget.onLoadStop != null)
_widget.onLoadStop(this, url);
else if (_inAppBrowser != null)
_inAppBrowser.onLoadStop(url);
break;
case "onLoadError":
String url = call.arguments["url"];
int code = call.arguments["code"];
String message = call.arguments["message"];
if (_widget != null && _widget.onLoadError != null)
_widget.onLoadError(this, url, code, message);
else if (_inAppBrowser != null)
_inAppBrowser.onLoadError(url, code, message);
break;
case "onLoadHttpError":
String url = call.arguments["url"];
int statusCode = call.arguments["statusCode"];
String description = call.arguments["description"];
if (_widget != null && _widget.onLoadHttpError != null)
_widget.onLoadHttpError(this, url, statusCode, description);
else if (_inAppBrowser != null)
_inAppBrowser.onLoadHttpError(url, statusCode, description);
break;
case "onProgressChanged":
int progress = call.arguments["progress"];
if (_widget != null && _widget.onProgressChanged != null)
_widget.onProgressChanged(this, progress);
else if (_inAppBrowser != null)
_inAppBrowser.onProgressChanged(progress);
break;
case "shouldOverrideUrlLoading":
String url = call.arguments["url"];
if (_widget != null && _widget.shouldOverrideUrlLoading != null)
_widget.shouldOverrideUrlLoading(this, url);
else if (_inAppBrowser != null)
_inAppBrowser.shouldOverrideUrlLoading(url);
break;
case "onConsoleMessage":
String message = call.arguments["message"];
ConsoleMessageLevel messageLevel = ConsoleMessageLevel.fromValue(call.arguments["messageLevel"]);
ConsoleMessage consoleMessage = ConsoleMessage(message: message, messageLevel: messageLevel);
if (_widget != null && _widget.onConsoleMessage != null)
_widget.onConsoleMessage(this, consoleMessage);
else if (_inAppBrowser != null)
_inAppBrowser.onConsoleMessage(consoleMessage);
break;
case "onScrollChanged":
int x = call.arguments["x"];
int y = call.arguments["y"];
if (_widget != null && _widget.onScrollChanged != null)
_widget.onScrollChanged(this, x, y);
else if (_inAppBrowser != null)
_inAppBrowser.onScrollChanged(x, y);
break;
case "onDownloadStart":
String url = call.arguments["url"];
if (_widget != null && _widget.onDownloadStart != null)
_widget.onDownloadStart(this, url);
else if (_inAppBrowser != null)
_inAppBrowser.onDownloadStart(url);
break;
case "onLoadResourceCustomScheme":
String scheme = call.arguments["scheme"];
String url = call.arguments["url"];
if (_widget != null && _widget.onLoadResourceCustomScheme != null) {
try {
var response = await _widget.onLoadResourceCustomScheme(this, scheme, url);
return (response != null) ? response.toJson(): null;
} catch (error) {
print(error);
return null;
}
} else if (_inAppBrowser != null) {
try {
var response = await _inAppBrowser.onLoadResourceCustomScheme(scheme, url);
return (response != null) ? response.toJson(): null;
} catch (error) {
print(error);
return null;
}
}
break;
case "onTargetBlank":
String url = call.arguments["url"];
if (_widget != null && _widget.onTargetBlank != null)
_widget.onTargetBlank(this, url);
else if (_inAppBrowser != null)
_inAppBrowser.onTargetBlank(url);
break;
case "onGeolocationPermissionsShowPrompt":
String origin = call.arguments["origin"];
if (_widget != null && _widget.onGeolocationPermissionsShowPrompt != null)
return (await _widget.onGeolocationPermissionsShowPrompt(this, origin))?.toMap();
else if (_inAppBrowser != null)
return (await _inAppBrowser.onGeolocationPermissionsShowPrompt(origin))?.toMap();
break;
case "onJsAlert":
String message = call.arguments["message"];
if (_widget != null && _widget.onJsAlert != null)
return (await _widget.onJsAlert(this, message))?.toMap();
else if (_inAppBrowser != null)
return (await _inAppBrowser.onJsAlert(message))?.toMap();
break;
case "onJsConfirm":
String message = call.arguments["message"];
if (_widget != null && _widget.onJsConfirm != null)
return (await _widget.onJsConfirm(this, message))?.toMap();
else if (_inAppBrowser != null)
return (await _inAppBrowser.onJsConfirm(message))?.toMap();
break;
case "onJsPrompt":
String message = call.arguments["message"];
String defaultValue = call.arguments["defaultValue"];
if (_widget != null && _widget.onJsPrompt != null)
return (await _widget.onJsPrompt(this, message, defaultValue))?.toMap();
else if (_inAppBrowser != null)
return (await _inAppBrowser.onJsPrompt(message, defaultValue))?.toMap();
break;
case "onSafeBrowsingHit":
String url = call.arguments["url"];
SafeBrowsingThreat threatType = SafeBrowsingThreat.fromValue(call.arguments["threatType"]);
if (_widget != null && _widget.onSafeBrowsingHit != null)
return (await _widget.onSafeBrowsingHit(this, url, threatType))?.toMap();
else if (_inAppBrowser != null)
return (await _inAppBrowser.onSafeBrowsingHit(url, threatType))?.toMap();
break;
case "onReceivedHttpAuthRequest":
String host = call.arguments["host"];
String protocol = call.arguments["protocol"];
String realm = call.arguments["realm"];
int port = call.arguments["port"];
int previousFailureCount = call.arguments["previousFailureCount"];
var protectionSpace = ProtectionSpace(host: host, protocol: protocol, realm: realm, port: port);
var challenge = HttpAuthChallenge(previousFailureCount: previousFailureCount, protectionSpace: protectionSpace);
if (_widget != null && _widget.onReceivedHttpAuthRequest != null)
return (await _widget.onReceivedHttpAuthRequest(this, challenge))?.toMap();
else if (_inAppBrowser != null)
return (await _inAppBrowser.onReceivedHttpAuthRequest(challenge))?.toMap();
break;
case "onReceivedServerTrustAuthRequest":
String host = call.arguments["host"];
String protocol = call.arguments["protocol"];
String realm = call.arguments["realm"];
int port = call.arguments["port"];
int error = call.arguments["error"];
String message = call.arguments["message"];
Uint8List serverCertificate = call.arguments["serverCertificate"];
var protectionSpace = ProtectionSpace(host: host, protocol: protocol, realm: realm, port: port);
var challenge = ServerTrustChallenge(protectionSpace: protectionSpace, error: error, message: message, serverCertificate: serverCertificate);
if (_widget != null && _widget.onReceivedServerTrustAuthRequest != null)
return (await _widget.onReceivedServerTrustAuthRequest(this, challenge))?.toMap();
else if (_inAppBrowser != null)
return (await _inAppBrowser.onReceivedServerTrustAuthRequest(challenge))?.toMap();
break;
case "onReceivedClientCertRequest":
String host = call.arguments["host"];
String protocol = call.arguments["protocol"];
String realm = call.arguments["realm"];
int port = call.arguments["port"];
var protectionSpace = ProtectionSpace(host: host, protocol: protocol, realm: realm, port: port);
var challenge = ClientCertChallenge(protectionSpace: protectionSpace);
if (_widget != null && _widget.onReceivedClientCertRequest != null)
return (await _widget.onReceivedClientCertRequest(this, challenge))?.toMap();
else if (_inAppBrowser != null)
return (await _inAppBrowser.onReceivedClientCertRequest(challenge))?.toMap();
break;
case "onFindResultReceived":
int activeMatchOrdinal = call.arguments["activeMatchOrdinal"];
int numberOfMatches = call.arguments["numberOfMatches"];
bool isDoneCounting = call.arguments["isDoneCounting"];
if (_widget != null && _widget.onFindResultReceived != null)
_widget.onFindResultReceived(this, activeMatchOrdinal, numberOfMatches, isDoneCounting);
else if (_inAppBrowser != null)
_inAppBrowser.onFindResultReceived(activeMatchOrdinal, numberOfMatches, isDoneCounting);
break;
case "onNavigationStateChange":
String url = call.arguments["url"];
if (_widget != null && _widget.onNavigationStateChange != null)
_widget.onNavigationStateChange(this, url);
else if (_inAppBrowser != null)
_inAppBrowser.onNavigationStateChange(url);
break;
case "onPermissionRequest":
String origin = call.arguments["origin"];
List<String> resources = call.arguments["resources"].cast<String>();
if (_widget != null && _widget.onPermissionRequest != null)
return (await _widget.onPermissionRequest(this, origin, resources))?.toMap();
/*else if (_inAppBrowser != null)
return (await _inAppBrowser.onPermissionRequest(origin, resources))?.toMap();*/
break;
case "onCallJsHandler":
String handlerName = call.arguments["handlerName"];
// decode args to json
List<dynamic> args = jsonDecode(call.arguments["args"]);
switch(handlerName) {
case "onLoadResource":
Map<dynamic, dynamic> argMap = args[0];
String initiatorType = argMap["initiatorType"];
String url = argMap["name"];
double startTime = argMap["startTime"] is int ? argMap["startTime"].toDouble() : argMap["startTime"];
double duration = argMap["duration"] is int ? argMap["duration"].toDouble() : argMap["duration"];
var response = new LoadedResource(initiatorType: initiatorType, url: url, startTime: startTime, duration: duration);
if (_widget != null && _widget.onLoadResource != null)
_widget.onLoadResource(this, response);
else if (_inAppBrowser != null)
_inAppBrowser.onLoadResource(response);
return null;
case "shouldInterceptAjaxRequest":
Map<dynamic, dynamic> argMap = args[0];
dynamic data = argMap["data"];
String method = argMap["method"];
String url = argMap["url"];
bool isAsync = argMap["isAsync"];
String user = argMap["user"];
String password = argMap["password"];
bool withCredentials = argMap["withCredentials"];
AjaxRequestHeaders headers = AjaxRequestHeaders(argMap["headers"]);
String responseType = argMap["responseType"];
var request = new AjaxRequest(data: data, method: method, url: url, isAsync: isAsync, user: user, password: password, withCredentials: withCredentials, headers: headers, responseType: responseType);
if (_widget != null && _widget.shouldInterceptAjaxRequest != null)
return jsonEncode(await _widget.shouldInterceptAjaxRequest(this, request));
else if (_inAppBrowser != null)
return jsonEncode(await _inAppBrowser.shouldInterceptAjaxRequest(request));
return null;
case "onAjaxReadyStateChange":
Map<dynamic, dynamic> argMap = args[0];
dynamic data = argMap["data"];
String method = argMap["method"];
String url = argMap["url"];
bool isAsync = argMap["isAsync"];
String user = argMap["user"];
String password = argMap["password"];
bool withCredentials = argMap["withCredentials"];
AjaxRequestHeaders headers = AjaxRequestHeaders(argMap["headers"]);
int readyState = argMap["readyState"];
int status = argMap["status"];
String responseURL = argMap["responseURL"];
String responseType = argMap["responseType"];
dynamic response = argMap["response"];
String responseText = argMap["responseText"];
String responseXML = argMap["responseXML"];
String statusText = argMap["statusText"];
Map<dynamic, dynamic> responseHeaders = argMap["responseHeaders"];
var request = new AjaxRequest(data: data, method: method, url: url, isAsync: isAsync, user: user, password: password,
withCredentials: withCredentials, headers: headers, readyState: AjaxRequestReadyState.fromValue(readyState), status: status, responseURL: responseURL,
responseType: responseType, response: response, responseText: responseText, responseXML: responseXML, statusText: statusText, responseHeaders: responseHeaders);
if (_widget != null && _widget.onAjaxReadyStateChange != null)
return jsonEncode(await _widget.onAjaxReadyStateChange(this, request));
else if (_inAppBrowser != null)
return jsonEncode(await _inAppBrowser.onAjaxReadyStateChange(request));
return null;
case "onAjaxProgress":
Map<dynamic, dynamic> argMap = args[0];
dynamic data = argMap["data"];
String method = argMap["method"];
String url = argMap["url"];
bool isAsync = argMap["isAsync"];
String user = argMap["user"];
String password = argMap["password"];
bool withCredentials = argMap["withCredentials"];
AjaxRequestHeaders headers = AjaxRequestHeaders(argMap["headers"]);
int readyState = argMap["readyState"];
int status = argMap["status"];
String responseURL = argMap["responseURL"];
String responseType = argMap["responseType"];
dynamic response = argMap["response"];
String responseText = argMap["responseText"];
String responseXML = argMap["responseXML"];
String statusText = argMap["statusText"];
Map<dynamic, dynamic> responseHeaders = argMap["responseHeaders"];
Map<dynamic, dynamic> eventMap = argMap["event"];
AjaxRequestEvent event = AjaxRequestEvent(lengthComputable: eventMap["lengthComputable"], loaded: eventMap["loaded"], total: eventMap["total"], type: AjaxRequestEventType.fromValue(eventMap["type"]));
var request = new AjaxRequest(data: data, method: method, url: url, isAsync: isAsync, user: user, password: password,
withCredentials: withCredentials, headers: headers, readyState: AjaxRequestReadyState.fromValue(readyState), status: status, responseURL: responseURL,
responseType: responseType, response: response, responseText: responseText, responseXML: responseXML, statusText: statusText, responseHeaders: responseHeaders, event: event);
if (_widget != null && _widget.onAjaxProgress != null)
return jsonEncode(await _widget.onAjaxProgress(this, request));
else if (_inAppBrowser != null)
return jsonEncode(await _inAppBrowser.onAjaxProgress(request));
return null;
case "shouldInterceptFetchRequest":
Map<dynamic, dynamic> argMap = args[0];
String url = argMap["url"];
String method = argMap["method"];
Map<dynamic, dynamic> headers = argMap["headers"];
Uint8List body = Uint8List.fromList(argMap["body"].cast<int>());
String mode = argMap["mode"];
FetchRequestCredential credentials = FetchRequest.createFetchRequestCredentialFromMap(argMap["credentials"]);
String cache = argMap["cache"];
String redirect = argMap["redirect"];
String referrer = argMap["referrer"];
String referrerPolicy = argMap["referrerPolicy"];
String integrity = argMap["integrity"];
bool keepalive = argMap["keepalive"];
var request = new FetchRequest(url: url, method: method, headers: headers, body: body, mode: mode, credentials: credentials,
cache: cache, redirect: redirect, referrer: referrer, referrerPolicy: referrerPolicy, integrity: integrity, keepalive: keepalive);
if (_widget != null && _widget.shouldInterceptFetchRequest != null)
return jsonEncode(await _widget.shouldInterceptFetchRequest(this, request));
else if (_inAppBrowser != null)
return jsonEncode(await _inAppBrowser.shouldInterceptFetchRequest(request));
return null;
}
if (javaScriptHandlersMap.containsKey(handlerName)) {
// convert result to json
try {
return jsonEncode(await javaScriptHandlersMap[handlerName](args));
} catch (error) {
print(error);
return null;
}
}
break;
default:
throw UnimplementedError("Unimplemented ${call.method} method");
}
}
///Gets the URL for the current page.
///This is not always the same as the URL passed to [InAppWebView.onLoadStarted] because although the load for that URL has begun, the current page may not have changed.
Future<String> getUrl() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
return await _channel.invokeMethod('getUrl', args);
}
///Gets the title for the current page.
Future<String> getTitle() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
return await _channel.invokeMethod('getTitle', args);
}
///Gets the progress for the current page. The progress value is between 0 and 100.
Future<int> getProgress() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
return await _channel.invokeMethod('getProgress', args);
}
///Gets the content html of the page. It first tries to get the content through javascript.
///If this doesn't work, it tries to get the content reading the file:
///- checking if it is an asset (`file:///`) or
///- downloading it using an `HttpClient` through the WebView's current url.
Future<String> getHtml() async {
var html = "";
InAppWebViewWidgetOptions options = await getOptions();
if (options != null && options.inAppWebViewOptions.javaScriptEnabled == true) {
html = await evaluateJavascript(source: "window.document.getElementsByTagName('html')[0].outerHTML;");
if (html != null && html.isNotEmpty)
return html;
}
var webviewUrl = await getUrl();
if (webviewUrl.startsWith("file:///")) {
var assetPathSplitted = webviewUrl.split("/flutter_assets/");
var assetPath = assetPathSplitted[assetPathSplitted.length - 1];
var bytes = await rootBundle.load(assetPath);
html = utf8.decode(bytes.buffer.asUint8List());
}
else {
HttpClient client = new HttpClient();
var url = Uri.parse(webviewUrl);
try {
var htmlRequest = await client.getUrl(url);
html = await (await htmlRequest.close()).transform(Utf8Decoder()).join();
} catch (e) {
print(e);
}
}
return html;
}
///Gets the list of all favicons for the current page.
Future<List<Favicon>> getFavicons() async {
List<Favicon> favicons = [];
HttpClient client = new HttpClient();
var webviewUrl = await getUrl();
var url = (webviewUrl.startsWith("file:///")) ? Uri.file(webviewUrl) : Uri.parse(webviewUrl);
String manifestUrl;
var html = await getHtml();
if (html.isEmpty) {
return favicons;
}
var assetPathBase;
if (webviewUrl.startsWith("file:///")) {
var assetPathSplitted = webviewUrl.split("/flutter_assets/");
assetPathBase = assetPathSplitted[0] + "/flutter_assets/";
}
// get all link html elements
var document = parse(html);
var links = document.getElementsByTagName('link');
for (var link in links) {
var attributes = link.attributes;
if (attributes["rel"] == "manifest") {
manifestUrl = attributes["href"];
if (!_isUrlAbsolute(manifestUrl)) {
if (manifestUrl.startsWith("/")) {
manifestUrl = manifestUrl.substring(1);
}
manifestUrl = ((assetPathBase == null) ? url.scheme + "://" + url.host + "/" : assetPathBase) + manifestUrl;
}
continue;
}
if (!attributes["rel"].contains("icon")) {
continue;
}
favicons.addAll(_createFavicons(url, assetPathBase, attributes["href"], attributes["rel"], attributes["sizes"], false));
}
// try to get /favicon.ico
try {
var faviconUrl = url.scheme + "://" + url.host + "/favicon.ico";
await client.headUrl(Uri.parse(faviconUrl));
favicons.add(Favicon(url: faviconUrl, rel: "shortcut icon"));
} catch(e) {
print("/favicon.ico file not found: " + e.toString());
}
// try to get the manifest file
HttpClientRequest manifestRequest;
HttpClientResponse manifestResponse;
bool manifestFound = false;
if (manifestUrl == null) {
manifestUrl = url.scheme + "://" + url.host + "/manifest.json";
}
try {
manifestRequest = await client.getUrl(Uri.parse(manifestUrl));
manifestResponse = await manifestRequest.close();
manifestFound = manifestResponse.statusCode == 200 && manifestResponse.headers.contentType?.mimeType == "application/json";
} catch(e) {
print("Manifest file not found: " + e.toString());
}
if (manifestFound) {
Map<String, dynamic> manifest = json.decode(await manifestResponse.transform(Utf8Decoder()).join());
if (manifest.containsKey("icons")) {
for(Map<String, dynamic> icon in manifest["icons"]) {
favicons.addAll(_createFavicons(url, assetPathBase, icon["src"], icon["rel"], icon["sizes"], true));
}
}
}
return favicons;
}
bool _isUrlAbsolute(String url) {
return url.startsWith("http://") || url.startsWith("https://");
}
List<Favicon> _createFavicons(Uri url, String assetPathBase, String urlIcon, String rel, String sizes, bool isManifest) {
List<Favicon> favicons = [];
List<String> urlSplitted = urlIcon.split("/");
if (!_isUrlAbsolute(urlIcon)) {
if (urlIcon.startsWith("/")) {
urlIcon = urlIcon.substring(1);
}
urlIcon = ((assetPathBase == null) ? url.scheme + "://" + url.host + "/" : assetPathBase) + urlIcon;
}
if (isManifest) {
rel = (sizes != null) ? urlSplitted[urlSplitted.length - 1].replaceFirst("-" + sizes, "").split(" ")[0].split(".")[0] : null;
}
if (sizes != null && sizes.isNotEmpty && sizes != "any") {
List<String> sizesSplitted = sizes.split(" ");
for (String size in sizesSplitted) {
int width = int.parse(size.split("x")[0]);
int height = int.parse(size.split("x")[1]);
favicons.add(Favicon(url: urlIcon, rel: rel, width: width, height: height));
}
} else {
favicons.add(Favicon(url: urlIcon, rel: rel, width: null, height: null));
}
return favicons;
}
///Loads the given [url] with optional [headers] specified as a map from name to value.
Future<void> loadUrl({@required String url, Map<String, String> headers = const {}}) async {
assert(url != null && url.isNotEmpty);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened(message: 'Cannot laod $url!');
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('url', () => url);
args.putIfAbsent('headers', () => headers);
await _channel.invokeMethod('loadUrl', args);
}
///Loads the given [url] with [postData] using `POST` method into this WebView.
Future<void> postUrl({@required String url, @required Uint8List postData}) async {
assert(url != null && url.isNotEmpty);
assert(postData != null);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened(message: 'Cannot laod $url!');
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('url', () => url);
args.putIfAbsent('postData', () => postData);
await _channel.invokeMethod('postUrl', args);
}
///Loads the given [data] into this WebView, using [baseUrl] as the base URL for the content.
///The [mimeType] parameter specifies the format of the data.
///The [encoding] parameter specifies the encoding of the data.
Future<void> loadData({@required String data, String mimeType = "text/html", String encoding = "utf8", String baseUrl = "about:blank"}) async {
assert(data != null);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('data', () => data);
args.putIfAbsent('mimeType', () => mimeType);
args.putIfAbsent('encoding', () => encoding);
args.putIfAbsent('baseUrl', () => baseUrl);
await _channel.invokeMethod('loadData', args);
}
///Loads the given [assetFilePath] with optional [headers] specified as a map from name to value.
///
///To be able to load your local files (assets, js, css, etc.), you need to add them in the `assets` section of the `pubspec.yaml` file, otherwise they cannot be found!
///
///Example of a `pubspec.yaml` file:
///```yaml
///...
///
///# The following section is specific to Flutter.
///flutter:
///
/// # The following line ensures that the Material Icons font is
/// # included with your application, so that you can use the icons in
/// # the material Icons class.
/// uses-material-design: true
///
/// assets:
/// - assets/index.html
/// - assets/css/
/// - assets/images/
///
///...
///```
///Example of a `main.dart` file:
///```dart
///...
///inAppBrowser.loadFile("assets/index.html");
///...
///```
Future<void> loadFile({@required String assetFilePath, Map<String, String> headers = const {}}) async {
assert(assetFilePath != null && assetFilePath.isNotEmpty);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened(message: 'Cannot laod $assetFilePath!');
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('url', () => assetFilePath);
args.putIfAbsent('headers', () => headers);
await _channel.invokeMethod('loadFile', args);
}
///Reloads the WebView.
Future<void> reload() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
await _channel.invokeMethod('reload', args);
}
///Goes back in the history of the WebView.
Future<void> goBack() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
await _channel.invokeMethod('goBack', args);
}
///Returns a boolean value indicating whether the WebView can move backward.
Future<bool> canGoBack() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
return await _channel.invokeMethod('canGoBack', args);
}
///Goes forward in the history of the WebView.
Future<void> goForward() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
await _channel.invokeMethod('goForward', args);
}
///Returns a boolean value indicating whether the WebView can move forward.
Future<bool> canGoForward() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
return await _channel.invokeMethod('canGoForward', args);
}
///Goes to the history item that is the number of steps away from the current item. Steps is negative if backward and positive if forward.
Future<void> goBackOrForward({@required int steps}) async {
assert(steps != null);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('steps', () => steps);
await _channel.invokeMethod('goBackOrForward', args);
}
///Returns a boolean value indicating whether the WebView can go back or forward the given number of steps. Steps is negative if backward and positive if forward.
Future<bool> canGoBackOrForward({@required int steps}) async {
assert(steps != null);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('steps', () => steps);
return await _channel.invokeMethod('canGoBackOrForward', args);
}
///Navigates to a [WebHistoryItem] from the back-forward [WebHistory.list] and sets it as the current item.
Future<void> goTo({@required WebHistoryItem historyItem}) async {
await goBackOrForward(steps: historyItem.offset);
}
///Check if the WebView instance is in a loading state.
Future<bool> isLoading() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
return await _channel.invokeMethod('isLoading', args);
}
///Stops the WebView from loading.
Future<void> stopLoading() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
await _channel.invokeMethod('stopLoading', args);
}
///Evaluates JavaScript code into the WebView and returns the result of the evaluation.
Future<dynamic> evaluateJavascript({@required String source}) async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('source', () => source);
var data = await _channel.invokeMethod('evaluateJavascript', args);
if (data != null && Platform.isAndroid)
data = json.decode(data);
return data;
}
///Injects an external JavaScript file into the WebView from a defined url.
Future<void> injectJavascriptFileFromUrl({@required String urlFile}) async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('urlFile', () => urlFile);
await _channel.invokeMethod('injectJavascriptFileFromUrl', args);
}
///Injects a JavaScript file into the WebView from the flutter assets directory.
Future<void> injectJavascriptFileFromAsset({@required String assetFilePath}) async {
String source = await rootBundle.loadString(assetFilePath);
await evaluateJavascript(source: source);
}
///Injects CSS into the WebView.
Future<void> injectCSSCode({@required String source}) async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('source', () => source);
await _channel.invokeMethod('injectCSSCode', args);
}
///Injects an external CSS file into the WebView from a defined url.
Future<void> injectCSSFileFromUrl({@required String urlFile}) async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('urlFile', () => urlFile);
await _channel.invokeMethod('injectStyleFile', args);
}
///Injects a CSS file into the WebView from the flutter assets directory.
Future<void> injectCSSFileFromAsset({@required String assetFilePath}) async {
String source = await rootBundle.loadString(assetFilePath);
await injectCSSCode(source: source);
}
///Adds a JavaScript message handler [callback] ([JavaScriptHandlerCallback]) that listen to post messages sent from JavaScript by the handler with name [handlerName].
///
///The Android implementation uses [addJavascriptInterface](https://developer.android.com/reference/android/webkit/WebView#addJavascriptInterface(java.lang.Object,%20java.lang.String)).
///The iOS implementation uses [addScriptMessageHandler](https://developer.apple.com/documentation/webkit/wkusercontentcontroller/1537172-addscriptmessagehandler?language=objc)
///
///The JavaScript function that can be used to call the handler is `window.flutter_inappbrowser.callHandler(handlerName <String>, ...args)`, where `args` are [rest parameters](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters).
///The `args` will be stringified automatically using `JSON.stringify(args)` method and then they will be decoded on the Dart side.
///
///In order to call `window.flutter_inappbrowser.callHandler(handlerName <String>, ...args)` properly, you need to wait and listen the JavaScript event `flutterInAppBrowserPlatformReady`.
///This event will be dispatched as soon as the platform (Android or iOS) is ready to handle the `callHandler` method.
///```javascript
/// window.addEventListener("flutterInAppBrowserPlatformReady", function(event) {
/// console.log("ready");
/// });
///```
///
///`window.flutter_inappbrowser.callHandler` returns a JavaScript [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise)
///that can be used to get the json result returned by [JavaScriptHandlerCallback].
///In this case, simply return data that you want to send and it will be automatically json encoded using [jsonEncode] from the `dart:convert` library.
///
///So, on the JavaScript side, to get data coming from the Dart side, you will use:
///```html
///<script>
/// window.addEventListener("flutterInAppBrowserPlatformReady", function(event) {
/// window.flutter_inappbrowser.callHandler('handlerFoo').then(function(result) {
/// console.log(result);
/// });
///
/// window.flutter_inappbrowser.callHandler('handlerFooWithArgs', 1, true, ['bar', 5], {foo: 'baz'}).then(function(result) {
/// console.log(result);
/// });
/// });
///</script>
///```
///
///Instead, on the `onLoadStop` WebView event, you can use `callHandler` directly:
///```dart
/// // Inject JavaScript that will receive data back from Flutter
/// inAppWebViewController.evaluateJavascript(source: """
/// window.flutter_inappbrowser.callHandler('test', 'Text from Javascript').then(function(result) {
/// console.log(result);
/// });
/// """);
///```
void addJavaScriptHandler({@required String handlerName, @required JavaScriptHandlerCallback callback}) {
assert(!javaScriptHandlerForbiddenNames.contains(handlerName));
this.javaScriptHandlersMap[handlerName] = (callback);
}
///Removes a JavaScript message handler previously added with the [addJavaScriptHandler()] associated to [handlerName] key.
///Returns the value associated with [handlerName] before it was removed.
///Returns `null` if [handlerName] was not found.
JavaScriptHandlerCallback removeJavaScriptHandler({@required String handlerName}) {
return this.javaScriptHandlersMap.remove(handlerName);
}
///Takes a screenshot (in PNG format) of the WebView's visible viewport and returns a `Uint8List`. Returns `null` if it wasn't be able to take it.
///
///**NOTE for iOS**: available from iOS 11.0+.
Future<Uint8List> takeScreenshot() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
return await _channel.invokeMethod('takeScreenshot', args);
}
///Sets the WebView options with the new [options] and evaluates them.
Future<void> setOptions({@required InAppWebViewWidgetOptions options}) async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
Map<String, dynamic> optionsMap = {};
optionsMap.addAll(options.inAppWebViewOptions?.toMap() ?? {});
if (Platform.isAndroid)
optionsMap.addAll(options.androidInAppWebViewOptions?.toMap() ?? {});
else if (Platform.isIOS)
optionsMap.addAll(options.iosInAppWebViewOptions?.toMap() ?? {});
args.putIfAbsent('options', () => optionsMap);
await _channel.invokeMethod('setOptions', args);
}
///Gets the current WebView options. Returns the options with `null` value if they are not set yet.
Future<InAppWebViewWidgetOptions> getOptions() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
InAppWebViewWidgetOptions inAppWebViewWidgetOptions = InAppWebViewWidgetOptions();
Map<dynamic, dynamic> options = await _channel.invokeMethod('getOptions', args);
if (options != null) {
options = options.cast<String, dynamic>();
inAppWebViewWidgetOptions.inAppWebViewOptions = InAppWebViewOptions.fromMap(options);
if (Platform.isAndroid)
inAppWebViewWidgetOptions.androidInAppWebViewOptions = AndroidInAppWebViewOptions.fromMap(options);
else if (Platform.isIOS)
inAppWebViewWidgetOptions.iosInAppWebViewOptions = IosInAppWebViewOptions.fromMap(options);
}
return inAppWebViewWidgetOptions;
}
///Gets the WebHistory for this WebView. This contains the back/forward list for use in querying each item in the history stack.
///This contains only a snapshot of the current state.
///Multiple calls to this method may return different objects.
///The object returned from this method will not be updated to reflect any new state.
Future<WebHistory> getCopyBackForwardList() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
Map<dynamic, dynamic> result = await _channel.invokeMethod('getCopyBackForwardList', args);
result = result.cast<String, dynamic>();
List<dynamic> historyListMap = result["history"];
historyListMap = historyListMap.cast<LinkedHashMap<dynamic, dynamic>>();
int currentIndex = result["currentIndex"];
List<WebHistoryItem> historyList = List();
for(var i = 0; i < historyListMap.length; i++) {
LinkedHashMap<dynamic, dynamic> historyItem = historyListMap[i];
historyList.add(WebHistoryItem(originalUrl: historyItem["originalUrl"], title: historyItem["title"], url: historyItem["url"], index: i, offset: i - currentIndex));
}
return WebHistory(list: historyList, currentIndex: currentIndex);
}
///Starts Safe Browsing initialization.
///
///URL loads are not guaranteed to be protected by Safe Browsing until after the this method returns true.
///Safe Browsing is not fully supported on all devices. For those devices this method will returns false.
///
///This should not be called if Safe Browsing has been disabled by manifest tag
///or [AndroidInAppWebViewOptions.safeBrowsingEnabled]. This prepares resources used for Safe Browsing.
///
///**NOTE**: available only on Android 27+.
Future<bool> startSafeBrowsing() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
return await _channel.invokeMethod('startSafeBrowsing', args);
}
///Sets the list of hosts (domain names/IP addresses) that are exempt from SafeBrowsing checks. The list is global for all the WebViews.
///
/// Each rule should take one of these:
///| Rule | Example | Matches Subdomain |
///| -- | -- | -- |
///| HOSTNAME | example.com | Yes |
///| .HOSTNAME | .example.com | No |
///| IPV4_LITERAL | 192.168.1.1 | No |
///| IPV6_LITERAL_WITH_BRACKETS | [10:20:30:40:50:60:70:80] | No |
///
///All other rules, including wildcards, are invalid. The correct syntax for hosts is defined by [RFC 3986](https://tools.ietf.org/html/rfc3986#section-3.2.2).
///
///[hosts] represents the list of hosts. This value must never be null.
///
///**NOTE**: available only on Android 27+.
Future<bool> setSafeBrowsingWhitelist({@required List<String> hosts}) async {
assert(hosts != null);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('hosts', () => hosts);
return await _channel.invokeMethod('setSafeBrowsingWhitelist', args);
}
///Returns a URL pointing to the privacy policy for Safe Browsing reporting. This value will never be `null`.
///
///**NOTE**: available only on Android 27+.
Future<String> getSafeBrowsingPrivacyPolicyUrl() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
return await _channel.invokeMethod('getSafeBrowsingPrivacyPolicyUrl', args);
}
///Clears all the webview's cache.
Future<void> clearCache() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
await _channel.invokeMethod('clearCache', args);
}
///Clears the SSL preferences table stored in response to proceeding with SSL certificate errors.
///
///**NOTE**: available only on Android.
Future<void> clearSslPreferences() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
await _channel.invokeMethod('clearSslPreferences', args);
}
///Clears the client certificate preferences stored in response to proceeding/cancelling client cert requests.
///Note that WebView automatically clears these preferences when the system keychain is updated.
///The preferences are shared by all the WebViews that are created by the embedder application.
///
///**NOTE**: On iOS certificate-based credentials are never stored permanently.
///
///**NOTE**: available on Android 21+.
Future<void> clearClientCertPreferences() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
await _channel.invokeMethod('clearClientCertPreferences', args);
}
///Finds all instances of find on the page and highlights them. Notifies [onFindResultReceived] listener.
///
///[find] represents the string to find.
///
///**NOTE**: on Android, it finds all instances asynchronously. Successive calls to this will cancel any pending searches.
///
///**NOTE**: on iOS, this is implemented using CSS and Javascript.
Future<void> findAllAsync({@required String find}) async {
assert(find != null);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('find', () => find);
await _channel.invokeMethod('findAllAsync', args);
}
///Highlights and scrolls to the next match found by [findAllAsync()]. Notifies [onFindResultReceived] listener.
///
///[forward] represents the direction to search.
///
///**NOTE**: on iOS, this is implemented using CSS and Javascript.
Future<void> findNext({@required bool forward}) async {
assert(forward != null);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('forward', () => forward);
await _channel.invokeMethod('findNext', args);
}
///Clears the highlighting surrounding text matches created by [findAllAsync()].
///
///**NOTE**: on iOS, this is implemented using CSS and Javascript.
Future<void> clearMatches() async {
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
await _channel.invokeMethod('clearMatches', args);
}
///Gets the html (with javascript) of the Chromium's t-rex runner game. Used in combination with [getTRexRunnerCss()].
Future<String> getTRexRunnerHtml() async {
return await rootBundle.loadString("packages/flutter_inappbrowser/t_rex_runner/t-rex.html");
}
///Gets the css of the Chromium's t-rex runner game. Used in combination with [getTRexRunnerHtml()].
Future<String> getTRexRunnerCss() async {
return await rootBundle.loadString("packages/flutter_inappbrowser/t_rex_runner/t-rex.css");
}
///Scrolls the WebView to the position.
///
///[x] represents the x position to scroll to.
///
///[y] represents the y position to scroll to.
Future<void> scrollTo({@required int x, @required int y}) async {
assert(x != null && y != null);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('x', () => x);
args.putIfAbsent('y', () => y);
await _channel.invokeMethod('scrollTo', args);
}
///Moves the scrolled position of the WebView.
///
///[x] represents the amount of pixels to scroll by horizontally.
///
///[y] represents the amount of pixels to scroll by vertically.
Future<void> scrollBy({@required int x, @required int y}) async {
assert(x != null && y != null);
Map<String, dynamic> args = <String, dynamic>{};
if (_inAppBrowserUuid != null && _inAppBrowser != null) {
_inAppBrowser.throwIsNotOpened();
args.putIfAbsent('uuid', () => _inAppBrowserUuid);
}
args.putIfAbsent('x', () => x);
args.putIfAbsent('y', () => y);
await _channel.invokeMethod('scrollBy', args);
}
/*Future<void> dispose() async {
Map<String, dynamic> args = <String, dynamic>{};
if (Platform.isIOS)
await _channel.invokeMethod('removeFromSuperview', args);
}*/
}