Moved CEScrollView to separate file and used documentRange.endLocation to simplify textView range calculation (#56)

Author: RenanGreca

Sources/CodeEditTextView/CEScrollView.swift

@@ -0,0 +1,28 @@
+//
+//  CEScrollView.swift
+//  
+//
+//  Created by Renan Greca on 18/02/23.
+//
+
+import AppKit
+import STTextView
+
+class CEScrollView: NSScrollView {
+
+    override func mouseDown(with event: NSEvent) {
+
+        if let textView = self.documentView as? STTextView,
+            !textView.visibleRect.contains(event.locationInWindow) {
+            // If the `scrollView` was clicked, but the click did not happen within the `textView`,
+            // set cursor to the last index of the `textView`.
+            
+            let endLocation = textView.textLayoutManager.documentRange.endLocation
+            let range = NSTextRange(location: endLocation)
+            _ = textView.becomeFirstResponder()
+            textView.setSelectedRange(range)
+        }
+
+        super.mouseDown(with: event)
+    }
+}

Sources/CodeEditTextView/STTextViewController.swift

@@ -342,30 +342,3 @@ public class STTextViewController: NSViewController, STTextViewDelegate, ThemeAt
         highlighter = nil
     }
 }
-
-class CEScrollView: NSScrollView {
-
-    override func mouseDown(with event: NSEvent) {
-
-        if let textView = self.documentView as? STTextView,
-            !textView.visibleRect.contains(event.locationInWindow) {
-            // If the `scrollView` was clicked, but the click did not happen within the `textView`,
-            // set cursor to the last index of the `textView`.
-
-            guard let provider = textView.textLayoutManager.textContentManager else {
-                return
-            }
-
-            let string = textView.string
-
-            let range = NSRange(string.endIndex..<string.endIndex, in: string)
-            if let newRange = NSTextRange(range, provider: provider) {
-                _ = textView.becomeFirstResponder()
-                textView.setSelectedRange(newRange)
-                return
-            }
-        }
-
-        super.mouseDown(with: event)
-    }
-}