From b2c2182d36fab08e0b50cee67a6192d54f0579a1 Mon Sep 17 00:00:00 2001
From: ShikiSuen <shikisuen@outlook.com>
Date: Fri, 9 Dec 2022 14:45:06 +0800
Subject: [PATCH] TextEditorEX // Add SwiftUI tooltip binding support.

---
 .../SwiftExtension/SwiftUIExtension.swift        | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/Packages/vChewing_SwiftExtension/Sources/SwiftExtension/SwiftUIExtension.swift b/Packages/vChewing_SwiftExtension/Sources/SwiftExtension/SwiftUIExtension.swift
index f1b04f55..a534244e 100644
--- a/Packages/vChewing_SwiftExtension/Sources/SwiftExtension/SwiftUIExtension.swift
+++ b/Packages/vChewing_SwiftExtension/Sources/SwiftExtension/SwiftUIExtension.swift
@@ -89,9 +89,11 @@ public struct VisualEffectView: NSViewRepresentable {
 /// A much faster alternative than Apple official TextEditor.
 public struct TextEditorEX: NSViewRepresentable {
   @Binding var text: String
+  @Binding var tooltip: String
 
-  public init(text: Binding<String>) {
+  public init(text: Binding<String>, tooltip: Binding<String>) {
     _text = text
+    _tooltip = tooltip
   }
 
   public func makeNSView(context: Context) -> NSScrollView {
@@ -99,20 +101,23 @@ public struct TextEditorEX: NSViewRepresentable {
   }
 
   public func updateNSView(_ nsView: NSScrollView, context _: Context) {
-    if let textArea = nsView.documentView as? NSTextView, textArea.string != self.text {
-      textArea.string = text
+    if let textArea = nsView.documentView as? NSTextView {
+      if textArea.string != text { textArea.string = text }
+      if textArea.toolTip != tooltip { textArea.toolTip = tooltip }
     }
   }
 
   public func makeCoordinator() -> Coordinator {
-    Coordinator(text: $text)
+    Coordinator(text: $text, tooltip: $tooltip)
   }
 
   public class Coordinator: NSObject, NSTextViewDelegate {
     public var text: Binding<String>
+    public var tooltip: Binding<String>
 
-    public init(text: Binding<String>) {
+    public init(text: Binding<String>, tooltip: Binding<String>) {
       self.text = text
+      self.tooltip = tooltip
     }
 
     public func textView(_ textView: NSTextView, shouldChangeTextIn range: NSRange, replacementString text: String?)
@@ -120,6 +125,7 @@ public struct TextEditorEX: NSViewRepresentable {
     {
       defer {
         self.text.wrappedValue = (textView.string as NSString).replacingCharacters(in: range, with: text!)
+        self.tooltip.wrappedValue = (textView.toolTip as? NSString ?? "").replacingCharacters(in: range, with: text!)
       }
       return true
     }