重构键盘长按删除

CustomKeyboard/View/KBFunctionView.m

@@ -25,6 +25,7 @@
 #import "KBTagItemModel.h"
 #import <MJExtension/MJExtension.h>
 #import "KBBizCode.h"
+#import "KBBackspaceLongPressHandler.h"
 
 @interface KBFunctionView () <KBFunctionBarViewDelegate, KBStreamOverlayViewDelegate, KBFunctionTagListViewDelegate>
 // UI
@@ -59,6 +60,7 @@
 // UL 双路兜底
 @property (nonatomic, assign) NSUInteger kb_ulSeq;      // 当前 UL 发起序号
 @property (nonatomic, assign) BOOL kb_ulHandledFlag;    // 主 App 已确认处理 UL
+@property (nonatomic, strong) KBBackspaceLongPressHandler *backspaceHandler;
 @end
 
 @implementation KBFunctionView
@@ -67,6 +69,7 @@
     if (self = [super initWithFrame:frame]) {
         // 背景使用当前主题强调色
         [self kb_applyTheme];
+        self.backspaceHandler = [[KBBackspaceLongPressHandler alloc] initWithContainerView:self];
 
         [self setupUI];
 //        [self reloadDemoData];
@@ -770,22 +773,9 @@ static void KBULDarwinCallback(CFNotificationCenterRef center, void *observer, C
     id<UITextDocumentProxy> proxy = ivc.textDocumentProxy;
     [proxy deleteBackward];
 }
-    - (void)onTapClear {
+- (void)onTapClear {
     NSLog(@"点击：清空");
-    // 连续删除：仅清空光标之前的输入（不改动 pasteView 的内容）
-    UIInputViewController *ivc = KBFindInputViewController(self);
-    id<UITextDocumentProxy> proxy = ivc.textDocumentProxy;
-    // 逐批读取 documentContextBeforeInput 并删除，避免 50 字符窗口限制带来的残留
-    NSInteger guard = 0; // 上限保护，避免极端情况下长时间阻塞
-    while (guard < 10000) {
-        NSString *before = proxy.documentContextBeforeInput ?: @"";
-        NSInteger count = before.length;
-        if (count <= 0) { break; } // 光标前已无内容
-        for (NSInteger i = 0; i < count; i++) {
-            [proxy deleteBackward];
-        }
-        guard += count;
-    }
+    [self.backspaceHandler performClearAction];
 }
     - (void)onTapSend {
     NSLog(@"点击：发送");
@@ -872,6 +862,7 @@ static void KBULDarwinCallback(CFNotificationCenterRef center, void *observer, C
         [_deleteButtonInternal setImage:[UIImage imageNamed:@"kb_del_icon"] forState:UIControlStateNormal];
 
         [_deleteButtonInternal addTarget:self action:@selector(onTapDelete) forControlEvents:UIControlEventTouchUpInside];
+        [self.backspaceHandler bindDeleteButton:_deleteButtonInternal];
     }
     return _deleteButtonInternal;
 }