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TUIKit/TUIChat/UI_Classic/Input/TUIResponderTextView.m

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+//
+//  TResponderTextView.m
+//  TUIKit
+//
+//  Created by kennethmiao on 2018/10/25.
+//  Copyright © 2018 Tencent. All rights reserved.
+//
+
+#import "TUIResponderTextView.h"
+#import <TIMCommon/NSString+TUIEmoji.h>
+
+@implementation TUIResponderTextView
+
+- (UIResponder *)nextResponder {
+    if (_overrideNextResponder == nil) {
+        return [super nextResponder];
+    } else {
+        return _overrideNextResponder;
+    }
+}
+
+- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
+    if (_overrideNextResponder != nil)
+        return NO;
+    else
+        return [super canPerformAction:action withSender:sender];
+}
+
+- (void)buildMenuWithBuilder:(id<UIMenuBuilder>)builder API_AVAILABLE(ios(13.0)) {
+    if (@available(iOS 16.0, *)) {
+        [builder removeMenuForIdentifier:UIMenuLookup];
+    }
+    [super buildMenuWithBuilder:builder];
+}
+
+- (void)deleteBackward {
+    id<TUIResponderTextViewDelegate> delegate = (id<TUIResponderTextViewDelegate>)self.delegate;
+
+    if ([delegate respondsToSelector:@selector(onDeleteBackward:)]) {
+        [delegate onDeleteBackward:self];
+    }
+
+    [super deleteBackward];
+}
+
+- (void)setText:(NSString *)text {
+    [super setText:text];
+    if (self.delegate && [self.delegate respondsToSelector:@selector(textViewDidChange:)]) {
+        [self.delegate textViewDidChange:self];
+    }
+}
+
+- (void)copy:(__unused id)sender {
+    UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
+    pasteboard.string = [[self.textStorage attributedSubstringFromRange:self.selectedRange] tui_getPlainString];
+}
+
+- (void)cut:(nullable id)sender {
+    UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
+    pasteboard.string = [[self.textStorage attributedSubstringFromRange:self.selectedRange] tui_getPlainString];
+    UIFont *textFont = [UIFont systemFontOfSize:16.0];
+    NSAttributedString *spaceString = [[NSAttributedString alloc] initWithString:@"" attributes:@{NSFontAttributeName : textFont}];
+    [self.textStorage replaceCharactersInRange:self.selectedRange withAttributedString:spaceString];
+}
+
+@end