Update for Swift 4, Upgrading possibilities

.gitignore

@@ -0,0 +1,77 @@
+### Swift ###
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## Build generated
+build/
+DerivedData/
+
+## Various settings
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata/
+
+## Other
+*.moved-aside
+*.xccheckout
+*.xcscmblueprint
+
+## Obj-C/Swift specific
+*.hmap
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# Swift Package Manager
+#
+# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
+# Packages/
+# Package.pins
+.build/
+
+# CocoaPods - Refactored to standalone file
+
+# Carthage - Refactored to standalone file
+
+# fastlane
+#
+# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
+# screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/#source-control
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots
+fastlane/test_output
+
+### Xcode ###
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## Build generated
+
+## Various settings
+
+## Other
+
+### Xcode Patch ###
+*.xcodeproj/*
+!*.xcodeproj/project.pbxproj
+!*.xcodeproj/xcshareddata/
+!*.xcworkspace/contents.xcworkspacedata
+/*.gcno
+CodeEditor/Assets.xcassets/.DS_Store
+.DS_Store

CodeEditor/AppDelegate.swift

@@ -7,35 +7,67 @@
 //
 
 import Cocoa
+import NotificationCenter
 
 @NSApplicationMain
 class AppDelegate: NSObject, NSApplicationDelegate {
 
     var appFolderName = "MacawEditor"
     var appFolderUrl: URL?
     var filename: String = ""
-    var settings = Settings()
+    var currentBuild = Int(Bundle.main.infoDictionary?["CFBundleVersion"] as! String)!
+    var preferencesController: NSWindowController?
 
     override init(){
         super.init()
-        print("Hello!")
+
+        DistributedNotificationCenter.default.addObserver(
+            self,
+            selector: #selector(interfaceColorChanged),
+            name: .AppleInterfaceThemeChangedNotification,
+            object: nil
+        )
+
         setupAppFolder()
-        settings.load()
+        Settings.shared.load()
+    }
+
+    @objc func interfaceColorChanged() {
+        NotificationCenter.default.post(name: .updateTheme, object: nil)
     }
 
     func setupAppFolder() {
-
+        var forceInstall = false
+        var installError = false
         let filer = FileManager.default
 
-        if let libFolder = filer.urls(for: .applicationSupportDirectory, in: .userDomainMask).first {
+        if let libFolder = filer.urls(
+            for: .applicationSupportDirectory,
+            in: .userDomainMask
+            ).first {
+
+            appFolderUrl = libFolder.appendingPathComponent(
+                appFolderName, isDirectory: true
+            )
 
-            appFolderUrl = libFolder.appendingPathComponent(appFolderName, isDirectory: true)
+            if let lastInstall = UserDefaults.standard.object(forKey: "installed") {
+                if Int(lastInstall as! Int) < currentBuild {
+                    forceInstall = true
+                }
+            }
 
-            if !filer.fileExists(atPath: appFolderUrl!.path) {
-                print("Setting up app folder")
+            if forceInstall || !filer.fileExists(atPath: appFolderUrl!.path) {
+                print(forceInstall ? "Upgrading app folder to build \(currentBuild)" : "Setting up app folder")
                 do {
                     try filer.createDirectory(at: appFolderUrl!, withIntermediateDirectories: true, attributes: nil)
-
+                    UserDefaults.standard.set(currentBuild, forKey: "installed")
+                } catch {
+                    installError = true
+                    print("Error creating app folder and copying syntax files")
+                    Alert("Error creating app folder. Syntax files not loaded. Verify you have permissions to write in folder ~/Library/Application Support/").show()
+                }
+
+                if !installError {
                     // Copy syntax files to appFolder
                     let files = [
                         "Settings.yaml",
@@ -45,23 +77,35 @@ class AppDelegate: NSObject, NSApplicationDelegate {
                         "json.default.yaml",
                         "swift.default.yaml",
                         "xml.default.yaml",
+                        "php.default.yaml",
                         "yaml.default.yaml"
                     ]
 
                     print("Copying syntax files to app folder")
-
+                    
                     for item in files {
+                        if filer.fileExists(atPath: (appFolderUrl?.appendingPathComponent(item).path)!) {
+                            do {
+                                try filer.removeItem(at: (appFolderUrl?.appendingPathComponent(item))!)
+                            }
+                            catch {
+                                print("Failed to upgrade \(item)")
+                                Alert("Error accessing app folder. Syntax files not loaded. Verify you have permissions to read from folder ~/Library/Application Support/").show()
+                            }
+                        }
+
                         if  let source = Bundle.main.url(file: item),
                             let target = appFolderUrl?.appendingPathComponent(item)
                         {
-                            //print("Copying file \(source) to \(target)")
-                            try filer.copyItem(at: source, to: target)
+                            do {
+                                try filer.copyItem(at: source, to: target)
+                            }
+                            catch {
+                                print("Failed to upgrade \(item)")
+                                Alert("Error accessing app folder. Syntax files not loaded. Verify you have permissions to read from folder ~/Library/Application Support/").show()
+                            }
                         }
                     }
-
-                } catch {
-                    print("Error creating app folder and copying syntax files")
-                    Alert("Error creating app folder. Syntax files not loaded. Verify you have permissions to write in folder ~/Library/Application Support/").show()
                 }
             }
         } else {
@@ -77,7 +121,18 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         main.fileOpenByOS(filename)
         return true
     }
-
+
+    @IBAction func showPreferences(_ sender: Any) {
+        if (preferencesController == nil) {
+            let storyboard = NSStoryboard(name: NSStoryboard.Name("Preferences"), bundle: nil)
+            preferencesController = storyboard.instantiateInitialController() as? NSWindowController
+        }
+
+        if (preferencesController != nil) {
+            preferencesController!.showWindow(sender)
+        }
+    }
+
     func applicationDidFinishLaunching(_ notification: Notification) {
         //
     }
@@ -87,7 +142,6 @@ class AppDelegate: NSObject, NSApplicationDelegate {
     }
 
     func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
-        print("Goodbye!")
         return true
     }