Filesystem monitor and refactor.

src/AppDelegate.swift

@@ -6,9 +6,12 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
     let fileManager = FileManager.default
 
     let window = PopoverPanel(viewController: SearchViewController())
+    let aboutWindow = MenulessWindow(viewController: AboutViewController())
 
     func applicationDidFinishLaunching(_ notification: Notification) {
-        PathManager.shared.rebuildIndex()
+        aboutWindow.level = .statusBar
+
+        PathManager.shared.updateIndex()
 
         window.delegate = self
 
@@ -30,19 +33,15 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
         }
 
         HotKeyManager.shared.enable()
-        if let code =
-                UserDefaults.standard.object(forKey: "keyCode") as? Int,
-           let mods =
-            UserDefaults.standard.object(forKey: "keyModifiers") as? Int
+        if let code = UserDefaults.standard.object(forKey: "keyCode") as? Int,
+           let mods = UserDefaults.standard.object(forKey: "keyModifiers") as? Int
         {
-            HotKeyManager.shared.registerHotKey(key: code,
-                modifiers: mods)
+            HotKeyManager.shared.registerHotKey(key: code, modifiers: mods)
         } else {
             // NOTE: This is the default shortcut. If you want to change
             //       it, do not forget to change it in other files
             //       (SettingsViewController).
-            HotKeyManager.shared.registerHotKey(key: kVK_Space,
-                modifiers: optionKey)
+            HotKeyManager.shared.registerHotKey(key: kVK_Space, modifiers: optionKey)
         }
     }
 
@@ -52,9 +51,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
         }
     }
 
-    func applicationShouldHandleReopen(_ sender: NSApplication,
-        hasVisibleWindows: Bool) -> Bool 
-    {
+    func applicationShouldHandleReopen(_ sender: NSApplication, hasVisibleWindows: Bool) -> Bool {
         if !window.isKeyWindow {
             window.makeKeyAndOrderFront(nil)
         }
@@ -79,4 +76,49 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
             return false
         }
     }
+
+    public func showAboutWindow() {
+        NSApplication.shared.activate(ignoringOtherApps: true)
+        aboutWindow.makeKeyAndOrderFront(nil)
+    }
+
+    // NOTE: This function is triggered by DirMonitor.
+    public func fsEventTriggered(_ path: String, _ flags: Int) {
+        var shouldReload = false
+        print("PATH: \(path)")
+        // if containsFlags(key: kFSEventStreamEventFlagNone, in: flags) {
+        // }
+        // if containsFlags(key: kFSEventStreamEventFlagRootChanged, in: flags) {
+        // }
+        // if containsFlags(key: kFSEventStreamEventFlagMustScanSubDirs, in: flags) {
+        // }
+        // if containsFlags(key: kFSEventStreamEventFlagItemInodeMetaMod, in: flags) {
+        // }
+        if containsFlags(key: kFSEventStreamEventFlagItemCreated, in: flags) {
+            print("    CREATED")
+            shouldReload = true
+        }
+        if containsFlags(key: kFSEventStreamEventFlagItemRemoved, in: flags) {
+            print("    REMOVED")
+            shouldReload = true
+        }
+        if containsFlags(key: kFSEventStreamEventFlagItemCloned, in: flags) {
+            print("    CLONED")
+            shouldReload = true
+        }
+        if containsFlags(key: kFSEventStreamEventFlagItemRenamed, in: flags) {
+            print("    RENAMED")
+            shouldReload = true
+        }
+
+        // TODO: This should also trigger SearchViewController's search re-index.
+        if shouldReload {
+            for dir in PathManager.shared.paths {
+                if path.hasPrefix(dir.key) {
+                    PathManager.shared.rebuildIndex(at: dir.key)
+                }
+            }
+            PathManager.shared.refreshFilesystemWatchers()
+        }
+    }
 }