// // FlutterWebViewController.swift // flutter_inappwebview // // Created by Lorenzo on 13/11/18. // import Foundation import WebKit public class FlutterWebViewController: FlutterMethodCallDelegate, FlutterPlatformView { private weak var registrar: FlutterPluginRegistrar? var webView: InAppWebView? var viewId: Int64 = 0 var channel: FlutterMethodChannel? var myView: UIView? init(registrar: FlutterPluginRegistrar, withFrame frame: CGRect, viewIdentifier viewId: Int64, arguments args: NSDictionary) { super.init() self.registrar = registrar self.viewId = viewId myView = UIView(frame: frame) let channelName = "com.pichillilorenzo/flutter_inappwebview_" + String(viewId) self.channel = FlutterMethodChannel(name: channelName, binaryMessenger: registrar.messenger()) self.channel?.setMethodCallHandler(LeakAvoider(delegate: self).handle) let initialUrl = (args["initialUrl"] as? String)! let initialFile = args["initialFile"] as? String let initialData = args["initialData"] as? [String: String] let initialHeaders = (args["initialHeaders"] as? [String: String])! let initialOptions = (args["initialOptions"] as? [String: Any])! let options = InAppWebViewOptions() options.parse(options: initialOptions) let preWebviewConfiguration = InAppWebView.preWKWebViewConfiguration(options: options) webView = InAppWebView(frame: myView!.bounds, configuration: preWebviewConfiguration, IABController: nil, channel: self.channel) webView!.autoresizingMask = [.flexibleWidth, .flexibleHeight] myView!.addSubview(webView!) webView!.options = options webView!.prepare() if #available(iOS 11.0, *) { self.webView!.configuration.userContentController.removeAllContentRuleLists() if let contentBlockers = webView!.options?.contentBlockers, contentBlockers.count > 0 { do { let jsonData = try JSONSerialization.data(withJSONObject: contentBlockers, options: []) let blockRules = String(data: jsonData, encoding: String.Encoding.utf8) WKContentRuleListStore.default().compileContentRuleList( forIdentifier: "ContentBlockingRules", encodedContentRuleList: blockRules) { (contentRuleList, error) in if let error = error { print(error.localizedDescription) return } let configuration = self.webView!.configuration configuration.userContentController.add(contentRuleList!) self.load(initialUrl: initialUrl, initialFile: initialFile, initialData: initialData, initialHeaders: initialHeaders) } return } catch { print(error.localizedDescription) } } } load(initialUrl: initialUrl, initialFile: initialFile, initialData: initialData, initialHeaders: initialHeaders) } deinit { print("FlutterWebViewController - dealloc") self.channel?.setMethodCallHandler(nil) webView!.dispose() webView = nil myView = nil } public func view() -> UIView { return myView! } public func load(initialUrl: String, initialFile: String?, initialData: [String: String]?, initialHeaders: [String: String]) { if initialFile != nil { do { try webView!.loadFile(url: initialFile!, headers: initialHeaders) } catch let error as NSError { dump(error) } return } if initialData != nil { let data = (initialData!["data"] as? String)! let mimeType = (initialData!["mimeType"] as? String)! let encoding = (initialData!["encoding"] as? String)! let baseUrl = (initialData!["baseUrl"] as? String)! webView!.loadData(data: data, mimeType: mimeType, encoding: encoding, baseUrl: baseUrl) } else { webView!.loadUrl(url: URL(string: initialUrl)!, headers: initialHeaders) } } public override func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) { let arguments = call.arguments as? NSDictionary switch call.method { case "getUrl": result( (webView != nil) ? webView!.url?.absoluteString : nil ) break case "getTitle": result( (webView != nil) ? webView!.title : nil ) break case "getProgress": result( (webView != nil) ? Int(webView!.estimatedProgress * 100) : nil ) break case "loadUrl": if webView != nil { let url = (arguments!["url"] as? String)! let headers = (arguments!["headers"] as? [String: String])! webView!.loadUrl(url: URL(string: url)!, headers: headers) result(true) } else { result(false) } break case "postUrl": if webView != nil { let url = (arguments!["url"] as? String)! let postData = (arguments!["postData"] as? FlutterStandardTypedData)! webView!.postUrl(url: URL(string: url)!, postData: postData.data, completionHandler: { () -> Void in result(true) }) } else { result(false) } break case "loadData": if webView != nil { let data = (arguments!["data"] as? String)! let mimeType = (arguments!["mimeType"] as? String)! let encoding = (arguments!["encoding"] as? String)! let baseUrl = (arguments!["baseUrl"] as? String)! webView!.loadData(data: data, mimeType: mimeType, encoding: encoding, baseUrl: baseUrl) result(true) } else { result(false) } break case "loadFile": if webView != nil { let url = (arguments!["url"] as? String)! let headers = (arguments!["headers"] as? [String: String])! do { try webView!.loadFile(url: url, headers: headers) result(true) } catch let error as NSError { result(FlutterError(code: "InAppBrowserFlutterPlugin", message: error.domain, details: nil)) return } } else { result(false) } break case "evaluateJavascript": if webView != nil { let source = (arguments!["source"] as? String)! webView!.evaluateJavascript(source: source, result: result) } else { result("") } break case "injectJavascriptFileFromUrl": if webView != nil { let urlFile = (arguments!["urlFile"] as? String)! webView!.injectJavascriptFileFromUrl(urlFile: urlFile) } result(true) break case "injectCSSCode": if webView != nil { let source = (arguments!["source"] as? String)! webView!.injectCSSCode(source: source) } result(true) break case "injectCSSFileFromUrl": if webView != nil { let urlFile = (arguments!["urlFile"] as? String)! webView!.injectCSSFileFromUrl(urlFile: urlFile) } result(true) break case "reload": if webView != nil { webView!.reload() } result(true) break case "goBack": if webView != nil { webView!.goBack() } result(true) break case "canGoBack": result((webView != nil) && webView!.canGoBack) break case "goForward": if webView != nil { webView!.goForward() } result(true) break case "canGoForward": result((webView != nil) && webView!.canGoForward) break case "goBackOrForward": if webView != nil { let steps = (arguments!["steps"] as? Int)! webView!.goBackOrForward(steps: steps) } result(true) break case "canGoBackOrForward": let steps = (arguments!["steps"] as? Int)! result((webView != nil) && webView!.canGoBackOrForward(steps: steps)) break case "stopLoading": if webView != nil { webView!.stopLoading() } result(true) break case "isLoading": result((webView != nil) && webView!.isLoading) break case "takeScreenshot": if webView != nil { webView!.takeScreenshot(completionHandler: { (screenshot) -> Void in result(screenshot) }) } else { result(nil) } break case "setOptions": if webView != nil { let inAppWebViewOptions = InAppWebViewOptions() let inAppWebViewOptionsMap = arguments!["options"] as! [String: Any] inAppWebViewOptions.parse(options: inAppWebViewOptionsMap) webView!.setOptions(newOptions: inAppWebViewOptions, newOptionsMap: inAppWebViewOptionsMap) } result(true) break case "getOptions": result((webView != nil) ? webView!.getOptions() : nil) break case "getCopyBackForwardList": result((webView != nil) ? webView!.getCopyBackForwardList() : nil) break case "findAllAsync": if webView != nil { let find = arguments!["find"] as! String webView!.findAllAsync(find: find, completionHandler: nil) result(true) } else { result(false) } break case "findNext": if webView != nil { let forward = arguments!["forward"] as! Bool webView!.findNext(forward: forward, completionHandler: {(value, error) in if error != nil { result(FlutterError(code: "FlutterWebViewController", message: error?.localizedDescription, details: nil)) return } result(true) }) } else { result(false) } break case "clearMatches": if webView != nil { webView!.clearMatches(completionHandler: {(value, error) in if error != nil { result(FlutterError(code: "FlutterWebViewController", message: error?.localizedDescription, details: nil)) return } result(true) }) } else { result(false) } break case "clearCache": if webView != nil { webView!.clearCache() } result(true) break case "scrollTo": if webView != nil { let x = arguments!["x"] as! Int let y = arguments!["y"] as! Int webView!.scrollTo(x: x, y: y) } result(true) break case "scrollBy": if webView != nil { let x = arguments!["x"] as! Int let y = arguments!["y"] as! Int webView!.scrollBy(x: x, y: y) } result(true) break case "pauseTimers": if webView != nil { webView!.pauseTimers() } result(true) break case "resumeTimers": if webView != nil { webView!.resumeTimers() } result(true) break case "printCurrentPage": if webView != nil { webView!.printCurrentPage(printCompletionHandler: {(completed, error) in if !completed, let e = error { result(false) return } result(true) }) } else { result(false) } break case "getContentHeight": result( (webView != nil) ? webView!.getContentHeight() : nil ) break case "reloadFromOrigin": if webView != nil { webView!.reloadFromOrigin() } result(true) break case "getScale": result( (webView != nil) ? webView!.getScale() : nil ) break default: result(FlutterMethodNotImplemented) break } } }