Cleanup: replace NSTextInput with NSTextInputClient

This revision replaces the deprecated protocol NSTextInput with
NSTextInputClient in Cocoa Text View. No functional changes.

For more information of the methods, please see:
https://developer.apple.com/documentation/appkit/nstextinputclient

Differential Revision: https://developer.blender.org/D11407

intern/ghost/intern/GHOST_WindowViewCocoa.h

@@ -25,7 +25,7 @@
  * Objective-C does not have multiple inheritance. */
 
 // We need to subclass it in order to give Cocoa the feeling key events are trapped
-@interface COCOA_VIEW_CLASS : COCOA_VIEW_BASE_CLASS <NSTextInput>
+@interface COCOA_VIEW_CLASS : COCOA_VIEW_BASE_CLASS <NSTextInputClient>
 {
   GHOST_SystemCocoa *systemCocoa;
   GHOST_WindowCocoa *associatedWindow;
@@ -202,12 +202,14 @@
   }
 }
 
-- (void)insertText:(id)chars
+- (void)insertText:(id)chars replacementRange:(NSRange)replacementRange
 {
   [self composing_free];
 }
 
-- (void)setMarkedText:(id)chars selectedRange:(NSRange)range
+- (void)setMarkedText:(id)chars
+        selectedRange:(NSRange)range
+     replacementRange:(NSRange)replacementRange
 {
   [self composing_free];
   if ([chars length] == 0)
@@ -241,12 +243,8 @@
   return composing;
 }
 
-- (NSInteger)conversationIdentifier
-{
-  return (NSInteger)self;
-}
-
-- (NSAttributedString *)attributedSubstringFromRange:(NSRange)range
+- (NSAttributedString *)attributedSubstringForProposedRange:(NSRange)range
+                                                actualRange:(NSRangePointer)actualRange
 {
   return [[[NSAttributedString alloc] init] autorelease];
 }
@@ -267,7 +265,7 @@
   return NSMakeRange(0, length);
 }
 
-- (NSRect)firstRectForCharacterRange:(NSRange)range
+- (NSRect)firstRectForCharacterRange:(NSRange)range actualRange:(NSRangePointer)actualRange
 {
   return NSZeroRect;
 }