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Co-authored-by: Ely Lucas <ely@meta-tek.net> Co-authored-by: Steven Sherry <steven.r.sherry@gmail.com> Co-authored-by: Steven Sherry <steven.sherry@ionic.io>
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Jul 1, 2022
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,227 @@ | ||
| import Foundation | ||
| import WebKit | ||
| import UIKit | ||
|
|
||
| open class CAPWebView: UIView { | ||
| lazy var webView: WKWebView = createWebView( | ||
| with: configuration, | ||
| assetHandler: assetHandler, | ||
| delegationHandler: delegationHandler | ||
| ) | ||
|
|
||
| private lazy var capacitorBridge = CapacitorBridge( | ||
| with: configuration, | ||
| delegate: self, | ||
| cordovaConfiguration: configDescriptor.cordovaConfiguration, | ||
| assetHandler: assetHandler, | ||
| delegationHandler: delegationHandler | ||
| ) | ||
|
|
||
| public final var bridge: CAPBridgeProtocol { | ||
| return capacitorBridge | ||
| } | ||
|
|
||
| private lazy var configDescriptor = instanceDescriptor() | ||
| private lazy var configuration = InstanceConfiguration(with: configDescriptor, isDebug: CapacitorBridge.isDevEnvironment) | ||
|
|
||
| private lazy var assetHandler: WebViewAssetHandler = { | ||
| let handler = WebViewAssetHandler(router: _Router()) | ||
| handler.setAssetPath(configuration.appLocation.path) | ||
| return handler | ||
| }() | ||
|
|
||
| private lazy var delegationHandler = WebViewDelegationHandler() | ||
|
|
||
| public required init?(coder: NSCoder) { | ||
| super.init(coder: coder) | ||
| setup() | ||
| } | ||
|
|
||
| public init() { | ||
| super.init(frame: .zero) | ||
| setup() | ||
| } | ||
|
|
||
| private func setup() { | ||
| CAPLog.enableLogging = configuration.loggingEnabled | ||
| logWarnings(for: configDescriptor) | ||
|
|
||
| if configDescriptor.instanceType == .fixed { updateBinaryVersion() } | ||
|
|
||
| addSubview(webView) | ||
| webView.translatesAutoresizingMaskIntoConstraints = false | ||
| NSLayoutConstraint.activate([ | ||
| webView.topAnchor.constraint(equalTo: topAnchor), | ||
| webView.bottomAnchor.constraint(equalTo: bottomAnchor), | ||
| webView.leadingAnchor.constraint(equalTo: leadingAnchor), | ||
| webView.trailingAnchor.constraint(equalTo: trailingAnchor) | ||
| ]) | ||
|
|
||
| guard FileManager.default.fileExists(atPath: bridge.config.appStartFileURL.path) else { fatalLoadError() } | ||
| capacitorDidLoad() | ||
|
|
||
| let url = bridge.config.appStartServerURL | ||
| CAPLog.print("⚡️ Loading app at \(url.absoluteString)") | ||
| capacitorBridge.webViewDelegationHandler.willLoadWebview(webView) | ||
| _ = webView.load(URLRequest(url: url)) | ||
| } | ||
|
|
||
| public lazy final var isNewBinary: Bool = { | ||
| if let curVersionCode = Bundle.main.infoDictionary?["CFBundleVersion"] as? String, | ||
| let curVersionName = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String { | ||
| if let lastVersionCode = UserDefaults.standard.string(forKey: "lastBinaryVersionCode"), | ||
| let lastVersionName = UserDefaults.standard.string(forKey: "lastBinaryVersionName") { | ||
| return (curVersionCode.isEqual(lastVersionCode) == false || curVersionName.isEqual(lastVersionName) == false) | ||
| } | ||
| } | ||
| return false | ||
| }() | ||
|
|
||
| open func instanceDescriptor() -> InstanceDescriptor { | ||
| let descriptor = InstanceDescriptor.init() | ||
| if !isNewBinary && !descriptor.cordovaDeployDisabled { | ||
| if let persistedPath = UserDefaults.standard.string(forKey: "serverBasePath"), !persistedPath.isEmpty { | ||
| if let libPath = NSSearchPathForDirectoriesInDomains(.libraryDirectory, .userDomainMask, true).first { | ||
| descriptor.appLocation = URL(fileURLWithPath: libPath, isDirectory: true) | ||
| .appendingPathComponent("NoCloud") | ||
| .appendingPathComponent("ionic_built_snapshots") | ||
| .appendingPathComponent(URL(fileURLWithPath: persistedPath, isDirectory: true).lastPathComponent) | ||
| } | ||
| } | ||
| } | ||
| return descriptor | ||
| } | ||
|
|
||
| /** | ||
| Allows any additional configuration to be performed. The `webView` and `bridge` properties will be set by this point. | ||
|
|
||
| - Note: This is called before the webview has been added to the view hierarchy. Not all operations may be possible at | ||
| this time. | ||
| */ | ||
| open func capacitorDidLoad() { | ||
| } | ||
|
|
||
| open func loadInitialContext(_ userContentController: WKUserContentController) { | ||
| CAPLog.print("in loadInitialContext base") | ||
| } | ||
| } | ||
|
|
||
| extension CAPWebView { | ||
|
|
||
| open func webViewConfiguration(for instanceConfiguration: InstanceConfiguration) -> WKWebViewConfiguration { | ||
| let webViewConfiguration = WKWebViewConfiguration() | ||
| webViewConfiguration.allowsInlineMediaPlayback = true | ||
| webViewConfiguration.suppressesIncrementalRendering = false | ||
| webViewConfiguration.allowsAirPlayForMediaPlayback = true | ||
| webViewConfiguration.mediaTypesRequiringUserActionForPlayback = [] | ||
| if let appendUserAgent = instanceConfiguration.appendedUserAgentString { | ||
| if let appName = webViewConfiguration.applicationNameForUserAgent { | ||
| webViewConfiguration.applicationNameForUserAgent = "\(appName) \(appendUserAgent)" | ||
| } else { | ||
| webViewConfiguration.applicationNameForUserAgent = appendUserAgent | ||
| } | ||
| } | ||
| return webViewConfiguration | ||
| } | ||
|
|
||
| private func createWebView(with configuration: InstanceConfiguration, assetHandler: WebViewAssetHandler, delegationHandler: WebViewDelegationHandler) -> WKWebView { | ||
| // set the cookie policy | ||
| HTTPCookieStorage.shared.cookieAcceptPolicy = HTTPCookie.AcceptPolicy.always | ||
| // setup the web view configuration | ||
| let webViewConfig = webViewConfiguration(for: configuration) | ||
| webViewConfig.setURLSchemeHandler(assetHandler, forURLScheme: configuration.localURL.scheme ?? InstanceDescriptorDefaults.scheme) | ||
| webViewConfig.userContentController = delegationHandler.contentController | ||
| // create the web view and set its properties | ||
| loadInitialContext(webViewConfig.userContentController) | ||
| let webView = WKWebView(frame: .zero, configuration: webViewConfig) | ||
| webView.scrollView.bounces = false | ||
| webView.scrollView.contentInsetAdjustmentBehavior = configuration.contentInsetAdjustmentBehavior | ||
| webView.allowsLinkPreview = configuration.allowLinkPreviews | ||
| webView.configuration.preferences.setValue(true, forKey: "allowFileAccessFromFileURLs") | ||
| webView.scrollView.isScrollEnabled = configuration.scrollingEnabled | ||
|
|
||
| if let overrideUserAgent = configuration.overridenUserAgentString { | ||
| webView.customUserAgent = overrideUserAgent | ||
| } | ||
|
|
||
| if let backgroundColor = configuration.backgroundColor { | ||
| self.backgroundColor = backgroundColor | ||
| webView.backgroundColor = backgroundColor | ||
| webView.scrollView.backgroundColor = backgroundColor | ||
| } else if #available(iOS 13, *) { | ||
| // Use the system background colors if background is not set by user | ||
| self.backgroundColor = UIColor.systemBackground | ||
| webView.backgroundColor = UIColor.systemBackground | ||
| webView.scrollView.backgroundColor = UIColor.systemBackground | ||
| } | ||
|
|
||
| // set our delegates | ||
| webView.uiDelegate = delegationHandler | ||
| webView.navigationDelegate = delegationHandler | ||
| return webView | ||
| } | ||
|
|
||
| private func logWarnings(for descriptor: InstanceDescriptor) { | ||
| if descriptor.warnings.contains(.missingAppDir) { | ||
| CAPLog.print("⚡️ ERROR: Unable to find application directory at: \"\(descriptor.appLocation.absoluteString)\"!") | ||
| } | ||
| if descriptor.instanceType == .fixed { | ||
| if descriptor.warnings.contains(.missingFile) { | ||
| CAPLog.print("Unable to find capacitor.config.json, make sure it exists and run npx cap copy.") | ||
| } | ||
| if descriptor.warnings.contains(.invalidFile) { | ||
| CAPLog.print("Unable to parse capacitor.config.json. Make sure it's valid JSON.") | ||
| } | ||
| if descriptor.warnings.contains(.missingCordovaFile) { | ||
| CAPLog.print("Unable to find config.xml, make sure it exists and run npx cap copy.") | ||
| } | ||
| if descriptor.warnings.contains(.invalidCordovaFile) { | ||
| CAPLog.print("Unable to parse config.xml. Make sure it's valid XML.") | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private func updateBinaryVersion() { | ||
| guard isNewBinary else { | ||
| return | ||
| } | ||
| guard let versionCode = Bundle.main.infoDictionary?["CFBundleVersion"] as? String, | ||
| let versionName = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String else { | ||
| return | ||
| } | ||
| let prefs = UserDefaults.standard | ||
| prefs.set(versionCode, forKey: "lastBinaryVersionCode") | ||
| prefs.set(versionName, forKey: "lastBinaryVersionName") | ||
| prefs.set("", forKey: "serverBasePath") | ||
| prefs.synchronize() | ||
| } | ||
|
|
||
| private func fatalLoadError() -> Never { | ||
| printLoadError() | ||
| exit(1) | ||
| } | ||
|
|
||
| private func printLoadError() { | ||
| let fullStartPath = capacitorBridge.config.appStartFileURL.path | ||
|
|
||
| CAPLog.print("⚡️ ERROR: Unable to load \(fullStartPath)") | ||
| CAPLog.print("⚡️ This file is the root of your web app and must exist before") | ||
| CAPLog.print("⚡️ Capacitor can run. Ensure you've run capacitor copy at least") | ||
| CAPLog.print("⚡️ or, if embedding, that this directory exists as a resource directory.") | ||
| } | ||
| } | ||
|
|
||
| extension CAPWebView: CAPBridgeDelegate { | ||
| internal var bridgedWebView: WKWebView? { | ||
| return webView | ||
| } | ||
|
|
||
| internal var bridgedViewController: UIViewController? { | ||
| // search for the parent view controller | ||
| var object = self.next | ||
| while !(object is UIViewController) && object != nil { | ||
| object = object?.next | ||
| } | ||
| return object as? UIViewController | ||
| } | ||
| } |
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