123 lines
4.5 KiB
Dart
123 lines
4.5 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/services.dart';
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import 'types.dart';
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import 'channel_manager.dart';
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import 'in_app_browser.dart';
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///ChromeSafariBrowser class.
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///
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///This class uses native [Chrome Custom Tabs](https://developer.android.com/reference/android/support/customtabs/package-summary) on Android
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///and [SFSafariViewController](https://developer.apple.com/documentation/safariservices/sfsafariviewcontroller) on iOS.
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///
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///[browserFallback] represents the [InAppBrowser] instance fallback in case `Chrome Custom Tabs`/`SFSafariViewController` is not available.
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class ChromeSafariBrowser {
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String uuid;
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InAppBrowser browserFallback;
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bool _isOpened = false;
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///Initialize the [ChromeSafariBrowser] instance with an [InAppBrowser] fallback instance or `null`.
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ChromeSafariBrowser ({bFallback}) {
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uuid = uuidGenerator.v4();
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browserFallback = bFallback;
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ChannelManager.addListener(uuid, handleMethod);
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_isOpened = false;
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}
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Future<dynamic> handleMethod(MethodCall call) async {
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switch(call.method) {
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case "onChromeSafariBrowserOpened":
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onOpened();
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break;
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case "onChromeSafariBrowserLoaded":
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onLoaded();
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break;
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case "onChromeSafariBrowserClosed":
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onClosed();
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this._isOpened = false;
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break;
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default:
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throw UnimplementedError("Unimplemented ${call.method} method");
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}
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}
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///Opens an [url] in a new [ChromeSafariBrowser] instance.
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///
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///[url]: The [url] to load. Call [encodeUriComponent()] on this if the [url] contains Unicode characters.
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///
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///[options]: Options for the [ChromeSafariBrowser].
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///
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///[headersFallback]: The additional header of the [InAppBrowser] instance fallback to be used in the HTTP request for this URL, specified as a map from name to value.
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///
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///[optionsFallback]: Options used by the [InAppBrowser] instance fallback.
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Future<void> open({@required String url, ChromeSafariBrowserClassOptions options, Map<String, String> headersFallback = const {}, InAppBrowserClassOptions optionsFallback}) async {
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assert(url != null && url.isNotEmpty);
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this.throwIsAlreadyOpened(message: 'Cannot open $url!');
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Map<String, dynamic> optionsMap = {};
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if (Platform.isAndroid)
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optionsMap.addAll(options.androidChromeCustomTabsOptions?.toMap() ?? {});
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else if (Platform.isIOS)
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optionsMap.addAll(options.iosSafariOptions?.toMap() ?? {});
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Map<String, dynamic> optionsFallbackMap = {};
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if (optionsFallback != null) {
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optionsFallbackMap.addAll(optionsFallback.inAppBrowserOptions?.toMap() ?? {});
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optionsFallbackMap.addAll(optionsFallback.inAppWebViewWidgetOptions?.inAppWebViewOptions?.toMap() ?? {});
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if (Platform.isAndroid) {
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optionsFallbackMap.addAll(optionsFallback.androidInAppBrowserOptions?.toMap() ?? {});
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optionsFallbackMap.addAll(optionsFallback.inAppWebViewWidgetOptions?.androidInAppWebViewOptions?.toMap() ?? {});
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}
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else if (Platform.isIOS) {
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optionsFallbackMap.addAll(optionsFallback.iosInAppBrowserOptions?.toMap() ?? {});
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optionsFallbackMap.addAll(optionsFallback.inAppWebViewWidgetOptions?.iosInAppWebViewOptions?.toMap() ?? {});
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}
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}
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Map<String, dynamic> args = <String, dynamic>{};
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args.putIfAbsent('uuid', () => uuid);
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args.putIfAbsent('uuidFallback', () => (browserFallback != null) ? browserFallback.uuid : '');
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args.putIfAbsent('url', () => url);
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args.putIfAbsent('headers', () => headersFallback);
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args.putIfAbsent('options', () => optionsMap);
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args.putIfAbsent('optionsFallback', () => optionsFallbackMap);
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args.putIfAbsent('isData', () => false);
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args.putIfAbsent('useChromeSafariBrowser', () => true);
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await ChannelManager.channel.invokeMethod('open', args);
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this._isOpened = true;
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}
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///Event fires when the [ChromeSafariBrowser] is opened.
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void onOpened() {
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}
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///Event fires when the [ChromeSafariBrowser] is loaded.
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void onLoaded() {
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}
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///Event fires when the [ChromeSafariBrowser] is closed.
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void onClosed() {
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}
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bool isOpened() {
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return this._isOpened;
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}
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void throwIsAlreadyOpened({String message = ''}) {
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if (this.isOpened()) {
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throw Exception(['Error: ${ (message.isEmpty) ? '' : message + ' '}The browser is already opened.']);
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}
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}
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void throwIsNotOpened({String message = ''}) {
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if (!this.isOpened()) {
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throw Exception(['Error: ${ (message.isEmpty) ? '' : message + ' '}The browser is not opened.']);
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}
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}
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} |