Implement ios prototype version

ios/send-ios-action-extension/ActionViewController.swift

@@ -0,0 +1,77 @@
+//
+//  ActionViewController.swift
+//  send-ios-action-extension
+//
+//  Created by Donovan Preston on 7/26/18.
+//  Copyright © 2018 Donovan Preston. All rights reserved.
+//
+
+import UIKit
+import WebKit
+import MobileCoreServices
+
+var typesToLoad = [("com.adobe.pdf", "application/pdf"), ("public.png", "image/png"),
+                   ("public.jpeg", "image/jpeg"), ("com.compuserve.gif", "image/gif"),
+                   ("com.microsoft.bmp", "image/bmp"), ("public.plain-text", "text/plain")]
+
+class ActionViewController: UIViewController, WKScriptMessageHandler {
+
+    @IBOutlet var webView: WKWebView!
+    var typeToSend: String?
+    var dataToSend: Data?
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        self.webView.frame = self.view.bounds
+        self.webView?.configuration.userContentController.add(self, name: "loaded")
+        self.webView?.configuration.userContentController.add(self, name: "copy")
+
+        if let url = Bundle.main.url(
+            forResource: "index",
+            withExtension: "html",
+            subdirectory: "assets") {
+            self.webView.loadFileURL(url, allowingReadAccessTo: url.deletingLastPathComponent())
+        }
+        // Get the item[s] we're handling from the extension context.
+        
+        for item in self.extensionContext!.inputItems as! [NSExtensionItem] {
+            for provider in item.attachments! as! [NSItemProvider] {
+                for (type, mimeType) in typesToLoad {
+                    if provider.hasItemConformingToTypeIdentifier(type) {
+                        provider.loadDataRepresentation(forTypeIdentifier: type, completionHandler: { (data, error) in
+                            OperationQueue.main.addOperation {
+                                self.typeToSend = mimeType
+                                self.dataToSend = data
+                            }
+                        })
+                        return
+                    }
+                }
+            }
+        }
+    }
+
+    public func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
+        print("Message received: \(message.name) with body: \(message.body)")
+        if (message.name == "loaded") {
+                let stringToSend = "window.sendBase64EncodedFromSwift('data:\(self.typeToSend ?? "application/octet-stream");base64,\(self.dataToSend?.base64EncodedString() ?? "")')";
+                self.webView.evaluateJavaScript(stringToSend) { (object: Any?, error: Error?) -> Void in
+                    print("completed")
+                }
+        } else if (message.name == "copy") {
+            UIPasteboard.general.string = "\(message.body)"
+        }
+    }
+
+    override func didReceiveMemoryWarning() {
+        super.didReceiveMemoryWarning()
+        // Dispose of any resources that can be recreated.
+    }
+
+    @IBAction func done() {
+        // Return any edited content to the host app.
+        // This template doesn't do anything, so we just echo the passed in items.
+        self.extensionContext!.completeRequest(returningItems: self.extensionContext!.inputItems, completionHandler: nil)
+    }
+
+}