1.5.0 Action extension to create class diagrams directly from Finder (#23)

Author: MarcoEidinger

ActionExtension/ActionExtension.entitlements

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>com.apple.security.app-sandbox</key>
+    <true/>
+    <key>com.apple.security.files.user-selected.read-only</key>
+    <true/>
+</dict>
+</plist>

ActionExtension/ActionRequestHandler.swift

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+import Foundation
+import XPCService
+
+class ActionRequestHandler: NSObject, NSExtensionRequestHandling {
+    lazy var connection: NSXPCConnection = {
+        let connection = NSXPCConnection(serviceName: "us.eidinger.SwiftPlantUMLXPCService")
+        connection.remoteObjectInterface = NSXPCInterface(with: XPCServiceProtocol.self)
+        connection.resume()
+        return connection
+    }()
+
+    deinit {
+        connection.invalidate()
+    }
+
+    func beginRequest(with context: NSExtensionContext) {
+        // For an Action Extension there will only ever be one extension item.
+        precondition(context.inputItems.count == 1)
+        guard let inputItem = context.inputItems[0] as? NSExtensionItem
+        else { preconditionFailure("Expected an extension item") }
+
+        // The extension item's attachments hold the set of files to process.
+        guard let inputAttachments = inputItem.attachments
+        else { preconditionFailure("Expected a valid array of attachments") }
+        precondition(inputAttachments.isEmpty == false, "Expected at least one attachment")
+
+        // The output of this extension is the existing swift files
+        guard let inputAttachments = inputItem.attachments
+        else { preconditionFailure("Expected a valid array of attachments") }
+
+        let handler: (Error) -> Void = { error in
+            print("remote proxy error: \(error)")
+        }
+        let service = connection.remoteObjectProxyWithErrorHandler(handler) as! XPCServiceProtocol
+        var paths: [String] = []
+
+        // Use a dispatch group to synchronise asynchronous calls to loadInPlaceFileRepresentation.
+        let dispatchGroup = DispatchGroup()
+
+        for attachment in inputAttachments {
+            dispatchGroup.enter()
+
+            attachment.loadInPlaceFileRepresentation(forTypeIdentifier: "public.swift-source") { url, _, _ in
+                if let url = url {
+                    paths.append(url.path)
+                }
+
+                dispatchGroup.leave()
+            }
+        }
+
+        dispatchGroup.notify(queue: DispatchQueue.main) {
+            service.generateDiagram(for: paths) {
+                context.completeRequest(returningItems: [inputItem], completionHandler: nil)
+            }
+        }
+    }
+}

ActionExtension/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>NSExtensionActivationRule</key>
+			<string>SUBQUERY (
+    extensionItems,
+    $extensionItem,
+        SUBQUERY (
+            $extensionItem.attachments,
+            $attachment,
+            ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.swift-source"
+        ).@count == $extensionItem.attachments.@count
+).@count == 1</string>
+			<key>NSExtensionServiceAllowsFinderPreviewItem</key>
+			<true/>
+			<key>NSExtensionServiceAllowsTouchBarItem</key>
+			<false/>
+			<key>NSExtensionServiceFinderPreviewIconName</key>
+			<string>Symbol</string>
+			<key>NSExtensionServiceRoleType</key>
+			<string>NSExtensionServiceRoleTypeEditor</string>
+			<key>NSExtensionServiceTouchBarBezelColorName</key>
+			<string>TouchBarBezel</string>
+			<key>NSExtensionServiceTouchBarIconName</key>
+			<string>Symbol</string>
+		</dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.services</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).ActionRequestHandler</string>
+	</dict>
+</dict>
+</plist>

ActionExtension/Media.xcassets/Contents.json

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+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

ActionExtension/Media.xcassets/Symbol.symbolset/Contents.json

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+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "symbols" : [
+    {
+      "filename" : "doc.badge.gearshape.svg",
+      "idiom" : "universal"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "light"
+        }
+      ],
+      "idiom" : "universal"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "idiom" : "universal"
+    }
+  ]
+}