//
// FlutterWebViewController.swift
// flutter_inappwebview
//
// Created by Lorenzo on 13/11/18.
//
import Foundation
import WebKit
public class FlutterWebViewController: NSObject, FlutterPlatformView {
private weak var registrar: FlutterPluginRegistrar?
var webView: InAppWebView?
var viewId: Int64 = 0
var channel: FlutterMethodChannel?
init(registrar: FlutterPluginRegistrar, withFrame frame: CGRect, viewIdentifier viewId: Int64, arguments args: NSDictionary) {
super.init()
self.registrar = registrar
self.viewId = viewId
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: frame, configuration: preWebviewConfiguration, IABController: nil, IAWController: self)
let channelName = "com.pichillilorenzo/flutter_inappwebview_" + String(viewId)
self.channel = FlutterMethodChannel(name: channelName, binaryMessenger: registrar.messenger())
self.channel?.setMethodCallHandler(self.handle)
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)
}
public func view() -> UIView {
return webView!
}
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 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 "removeFromSuperview":
webView!.removeFromSuperview()
result(true)
break
default:
result(FlutterMethodNotImplemented)
break
}
}
}