Download to server

5 years ago · 59602fe22c
1 changed files with 412 additions and 0 deletions
--- a/Pods/WebBrowser/WebBrowser/WebBrowserViewController.swift
+++ b/Pods/WebBrowser/WebBrowser/WebBrowserViewController.swift
@ -0,0 +1,412 @@
+//
+//  WebBrowserViewController.swift
+//  WebBrowser
+//
+//  Created by Xin Hong on 16/4/26.
+//  Copyright © 2016年 Teambition. All rights reserved.
+//
+
+import UIKit
+import WebKit
+
+open class WebBrowserViewController: UIViewController {
+    open weak var delegate: WebBrowserDelegate?
+    open var language: WebBrowserLanguage = .english {
+        didSet {
+            InternationalControl.sharedControl.language = language
+        }
+    }
+    open var tintColor = UIColor.blue {
+        didSet {
+            updateTintColor()
+        }
+    }
+    open var barTintColor: UIColor? {
+        didSet {
+            updateBarTintColor()
+        }
+    }
+    open var isToolbarHidden = false {
+        didSet {
+            navigationController?.setToolbarHidden(isToolbarHidden, animated: true)
+        }
+    }
+    open var toolbarItemSpace = WebBrowser.defaultToolbarItemSpace {
+        didSet {
+            itemFixedSeparator.width = toolbarItemSpace
+        }
+    }
+    open var isShowActionBarButton = true {
+        didSet {
+            updateToolBarState()
+        }
+    }
+    open var customApplicationActivities = [UIActivity]()
+    open var isShowURLInNavigationBarWhenLoading = true
+    open var isShowPageTitleInNavigationBar = true
+
+    fileprivate var webView = WKWebView(frame: CGRect.zero)
+
+    public func getWKWebView() -> WKWebView {
+        return webView
+    }
+
+    fileprivate lazy var progressView: UIProgressView = {
+        let progressView = UIProgressView(progressViewStyle: .default)
+        progressView.trackTintColor = .clear
+        progressView.tintColor = self.tintColor
+        return progressView
+    }()
+    fileprivate var previousNavigationControllerNavigationBarAppearance = NavigationBarAppearance()
+    fileprivate var previousNavigationControllerToolbarAppearance = ToolbarAppearance()
+
+    fileprivate lazy var refreshButton: UIBarButtonItem = {
+        let refreshButton = UIBarButtonItem(barButtonSystemItem: .refresh, target: self, action: #selector(WebBrowserViewController.refreshButtonTapped(_:)))
+        return refreshButton
+    }()
+    fileprivate lazy var stopButton: UIBarButtonItem = {
+        let stopButton = UIBarButtonItem(barButtonSystemItem: .stop, target: self, action: #selector(WebBrowserViewController.stopButtonTapped(_:)))
+        return stopButton
+    }()
+    fileprivate lazy var backButton: UIBarButtonItem = {
+        let backIcon = WebBrowser.image(named: "backIcon")
+        let backButton = UIBarButtonItem(image: backIcon, style: .plain, target: self, action: #selector(WebBrowserViewController.backButtonTapped(_:)))
+        return backButton
+    }()
+    fileprivate lazy var forwardButton: UIBarButtonItem = {
+        let forwardIcon = WebBrowser.image(named: "forwardIcon")
+        let forwardButton = UIBarButtonItem(image: forwardIcon, style: .plain, target: self, action: #selector(WebBrowserViewController.forwardButtonTapped(_:)))
+        return forwardButton
+    }()
+    fileprivate lazy var actionButton: UIBarButtonItem = {
+        let actionButton = UIBarButtonItem(barButtonSystemItem: .action, target: self, action: #selector(WebBrowserViewController.actionButtonTapped(_:)))
+        return actionButton
+    }()
+    fileprivate lazy var itemFixedSeparator: UIBarButtonItem = {
+        let itemFixedSeparator = UIBarButtonItem(barButtonSystemItem: .fixedSpace, target: nil, action: nil)
+        itemFixedSeparator.width = self.toolbarItemSpace
+        return itemFixedSeparator
+    }()
+    fileprivate lazy var itemFlexibleSeparator: UIBarButtonItem = {
+        let itemFlexibleSeparator = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
+        return itemFlexibleSeparator
+    }()
+
+    public var onOpenExternalAppHandler: ((_ isOpen: Bool) -> Void)?
+    
+    // MARK: - Life cycle
+    open override func viewDidLoad() {
+        super.viewDidLoad()
+
+        savePreviousNavigationControllerState()
+        configureWebView()
+        configureProgressView()
+    }
+
+    open override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        navigationController?.setNavigationBarHidden(false, animated: true)
+        navigationController?.navigationBar.setBackgroundImage(nil, for: .default)
+        navigationController?.navigationBar.shadowImage = nil
+        navigationController?.navigationBar.isTranslucent = true
+        navigationController?.navigationBar.addSubview(progressView)
+        navigationController?.setToolbarHidden(isToolbarHidden, animated: true)
+
+        progressView.alpha = 0
+        updateTintColor()
+        updateBarTintColor()
+        updateToolBarState()
+    }
+
+    open override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+        restorePreviousNavigationControllerState(animated: animated)
+        progressView.removeFromSuperview()
+    }
+
+    public convenience init(configuration: WKWebViewConfiguration) {
+        self.init()
+        webView = WKWebView(frame: CGRect.zero, configuration: configuration)
+    }
+
+    open class func rootNavigationWebBrowser(webBrowser: WebBrowserViewController) -> UINavigationController {
+        webBrowser.navigationItem.rightBarButtonItem = UIBarButtonItem(title: LocalizedString(key: "Done"), style: .done, target: webBrowser, action: #selector(WebBrowserViewController.doneButtonTapped(_:)))
+        let navigationController = UINavigationController(rootViewController: webBrowser)
+        return navigationController
+    }
+
+    deinit {
+        webView.uiDelegate = nil
+        webView.navigationDelegate = nil
+        if isViewLoaded {
+            webView.removeObserver(self, forKeyPath: WebBrowser.estimatedProgressKeyPath)
+        }
+    }
+
+    // MARK: - Public
+    open func loadRequest(_ request: URLRequest) {
+        webView.load(request)
+    }
+
+    open func loadURL(_ url: URL) {
+        webView.load(URLRequest(url: url))
+    }
+
+    open func loadURLString(_ urlString: String) {
+        guard let url = URL(string: urlString) else {
+            return
+        }
+        webView.load(URLRequest(url: url))
+    }
+
+    open func loadHTMLString(_ htmlString: String, baseURL: URL?) {
+        webView.loadHTMLString(htmlString, baseURL: baseURL)
+    }
+}
+
+extension WebBrowserViewController {
+    // MARK: - Helper
+    fileprivate func configureWebView() {
+        webView.frame = view.bounds
+        webView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        webView.autoresizesSubviews = true
+        webView.navigationDelegate = self
+        webView.uiDelegate = self
+        webView.isMultipleTouchEnabled = true
+        webView.scrollView.alwaysBounceVertical = true
+        view.addSubview(webView)
+
+        webView.addObserver(self, forKeyPath: WebBrowser.estimatedProgressKeyPath, options: .new, context: &WebBrowser.estimatedProgressContext)
+    }
+
+    fileprivate func configureProgressView() {
+        let yPosition: CGFloat = {
+            guard let navigationBar = self.navigationController?.navigationBar else {
+                return 0
+            }
+            return navigationBar.frame.height - self.progressView.frame.height
+        }()
+        progressView.frame = CGRect(x: 0, y: yPosition, width: view.frame.width, height: progressView.frame.width)
+        progressView.autoresizingMask = [.flexibleWidth, .flexibleTopMargin]
+    }
+
+    fileprivate func savePreviousNavigationControllerState() {
+        guard let navigationController = navigationController else {
+            return
+        }
+
+        var navigationBarAppearance = NavigationBarAppearance(navigationBar: navigationController.navigationBar)
+        navigationBarAppearance.isHidden = navigationController.isNavigationBarHidden
+        previousNavigationControllerNavigationBarAppearance = navigationBarAppearance
+
+        var toolbarAppearance = ToolbarAppearance(toolbar: navigationController.toolbar)
+        toolbarAppearance.isHidden = navigationController.isToolbarHidden
+        previousNavigationControllerToolbarAppearance = toolbarAppearance
+    }
+
+    fileprivate func restorePreviousNavigationControllerState(animated: Bool) {
+        guard let navigationController = navigationController else {
+            return
+        }
+
+        navigationController.setNavigationBarHidden(previousNavigationControllerNavigationBarAppearance.isHidden, animated: animated)
+        navigationController.setToolbarHidden(previousNavigationControllerToolbarAppearance.isHidden, animated: animated)
+
+        previousNavigationControllerNavigationBarAppearance.apply(to: navigationController.navigationBar)
+        previousNavigationControllerToolbarAppearance.apply(to: navigationController.toolbar)
+    }
+
+    fileprivate func updateTintColor() {
+        progressView.tintColor = tintColor
+        navigationController?.navigationBar.tintColor = tintColor
+        navigationController?.toolbar.tintColor = tintColor
+    }
+
+    fileprivate func updateBarTintColor() {
+        navigationController?.navigationBar.barTintColor = barTintColor
+        navigationController?.toolbar.barTintColor = barTintColor
+    }
+}
+
+extension WebBrowserViewController {
+    // MARK: - UIBarButtonItem actions
+    @objc func refreshButtonTapped(_ sender: UIBarButtonItem) {
+        webView.stopLoading()
+        webView.reload()
+    }
+
+    @objc func stopButtonTapped(_ sender: UIBarButtonItem) {
+        webView.stopLoading()
+    }
+
+    @objc func backButtonTapped(_ sender: UIBarButtonItem) {
+        webView.goBack()
+        updateToolBarState()
+    }
+
+    @objc func forwardButtonTapped(_ sender: UIBarButtonItem) {
+        webView.goForward()
+        updateToolBarState()
+    }
+
+    @objc func actionButtonTapped(_ sender: UIBarButtonItem) {
+        DispatchQueue.main.async {
+            var activityItems = [Any]()
+            if let url = self.webView.url {
+                activityItems.append(url)
+            }
+            var applicationActivities = [UIActivity]()
+            applicationActivities.append(SafariActivity())
+            applicationActivities.append(contentsOf: self.customApplicationActivities)
+
+            let activityViewController = UIActivityViewController(activityItems: activityItems, applicationActivities: applicationActivities)
+            activityViewController.view.tintColor = self.tintColor
+
+            if UIDevice.current.userInterfaceIdiom == .pad {
+                activityViewController.popoverPresentationController?.barButtonItem = sender
+                activityViewController.popoverPresentationController?.permittedArrowDirections = .any
+                self.present(activityViewController, animated: true, completion: nil)
+            } else {
+                self.present(activityViewController, animated: true, completion: nil)
+            }
+        }
+    }
+
+    @objc func doneButtonTapped(_ sender: UIBarButtonItem) {
+        delegate?.webBrowserWillDismiss(self)
+        dismiss(animated: true) {
+            self.delegate?.webBrowserDidDismiss(self)
+        }
+    }
+}
+
+extension WebBrowserViewController {
+    // MARK: - Tool bar
+    fileprivate func updateToolBarState() {
+        backButton.isEnabled = webView.canGoBack
+        forwardButton.isEnabled = webView.canGoForward
+
+        var barButtonItems = [UIBarButtonItem]()
+        if webView.isLoading {
+            barButtonItems = [backButton, itemFixedSeparator, forwardButton, itemFixedSeparator, stopButton, itemFlexibleSeparator]
+            if let urlString = webView.url?.absoluteString, isShowURLInNavigationBarWhenLoading {
+                var titleString = urlString.replacingOccurrences(of: "http://", with: "", options: .literal, range: nil)
+                titleString = titleString.replacingOccurrences(of: "https://", with: "", options: .literal, range: nil)
+                navigationItem.title = titleString
+            }
+        } else {
+            barButtonItems = [backButton, itemFixedSeparator, forwardButton, itemFixedSeparator, refreshButton, itemFlexibleSeparator]
+            if isShowPageTitleInNavigationBar {
+                navigationItem.title = webView.title
+            }
+        }
+
+        if isShowActionBarButton {
+            barButtonItems.append(actionButton)
+        }
+
+        setToolbarItems(barButtonItems, animated: true)
+    }
+}
+
+extension WebBrowserViewController {
+    // MARK: - External app support
+    fileprivate func externalAppRequiredToOpen(_ url: URL) -> Bool {
+        let validSchemes: Set<String> = ["http", "https"]
+        if let urlScheme = url.scheme {
+            return !validSchemes.contains(urlScheme)
+        } else {
+            return false
+        }
+    }
+
+    fileprivate func openExternalApp(with url: URL) {
+        let externalAppPermissionAlert = UIAlertController(title: LocalizedString(key: "OpenExternalAppAlert.title"), message: LocalizedString(key: "OpenExternalAppAlert.message"), preferredStyle: .alert)
+        let cancelAction = UIAlertAction(title: LocalizedString(key: "Cancel"), style: .cancel, handler: { [weak self] (action) in
+            self?.onOpenExternalAppHandler?(false)
+        })
+        let openAction = UIAlertAction(title: LocalizedString(key: "Open"), style: .default) { [weak self] (action) in
+            UIApplication.shared.openURL(url)
+            self?.onOpenExternalAppHandler?(true)
+        }
+        externalAppPermissionAlert.addAction(cancelAction)
+        externalAppPermissionAlert.addAction(openAction)
+        present(externalAppPermissionAlert, animated: true, completion: nil)
+    }
+}
+
+extension WebBrowserViewController {
+    // MARK: - Observer
+    open override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
+        if let keyPath = keyPath, (keyPath == WebBrowser.estimatedProgressKeyPath && context == &WebBrowser.estimatedProgressContext) {
+            progressView.alpha = 1
+            let animated = webView.estimatedProgress > Double(progressView.progress)
+            progressView.setProgress(Float(webView.estimatedProgress), animated: animated)
+
+            if webView.estimatedProgress >= 1 {
+                UIView.animate(withDuration: 0.3, delay: 0.3, options: .curveEaseOut, animations: {
+                    self.progressView.alpha = 0
+                    }, completion: { (finished) in
+                        self.progressView.progress = 0
+                })
+            }
+        } else {
+            super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)
+        }
+    }
+}
+
+extension WebBrowserViewController: WKNavigationDelegate {
+    // MARK: - WKNavigationDelegate
+    public func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
+        updateToolBarState()
+        delegate?.webBrowser(self, didStartLoad: webView.url)
+    }
+
+    public func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
+        updateToolBarState()
+        delegate?.webBrowser(self, didFinishLoad: webView.url)
+    }
+
+    public func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
+        updateToolBarState()
+        delegate?.webBrowser(self, didFailLoad: webView.url, withError: error)
+    }
+
+    public func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
+        updateToolBarState()
+        delegate?.webBrowser(self, didFailLoad: webView.url, withError: error)
+    }
+
+
+    public func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
+        if let oriDelegate = delegate, oriDelegate.webBrowser(self, decidePolicyFor: navigationAction, decisionHandler: decisionHandler) {
+            return
+        }
+        if let url = navigationAction.request.url {
+            if !externalAppRequiredToOpen(url) {
+                if navigationAction.targetFrame == nil {
+                    loadURL(url)
+                    decisionHandler(.cancel)
+                    return
+                }
+            } else if UIApplication.shared.canOpenURL(url) {
+                openExternalApp(with: url)
+                decisionHandler(.cancel)
+                return
+            }
+        }
+
+        decisionHandler(.allow)
+    }
+}
+
+extension WebBrowserViewController: WKUIDelegate {
+    // MARK: - WKUIDelegate
+    public func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
+        if let mainFrame = navigationAction.targetFrame?.isMainFrame, mainFrame == false {
+            webView.load(navigationAction.request)
+        }
+        return nil
+    }
+}