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处理键盘长按删除 撤销出现的bug

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CodeST
2025-12-23 18:05:01 +08:00
parent 73d6ec933a
commit 6a539dc3c5
6 changed files with 141 additions and 126 deletions
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40
CustomKeyboard/Utils/KBBackspaceLongPressHandler.m
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@@ -48,6 +48,8 @@ typedef NS_ENUM(NSInteger, KBBackspaceChunkClass) {
@property (nonatomic, assign) CGPoint backspaceLastTouchPointInSelf;
@property (nonatomic, assign) NSUInteger backspaceClearToken;
@property (nonatomic, strong) UILabel *backspaceClearLabel;
@property (nonatomic, copy) NSString *pendingClearBefore;
@property (nonatomic, copy) NSString *pendingClearAfter;
@end
@implementation KBBackspaceLongPressHandler
@@ -73,6 +75,8 @@ typedef NS_ENUM(NSInteger, KBBackspaceChunkClass) {
self.backspaceHasLastTouchPoint = NO;
self.backspaceHoldToken += 1;
[self kb_hideBackspaceClearLabel];
self.pendingClearBefore = nil;
self.pendingClearAfter = nil;
if (!button) { return; }
@@ -99,7 +103,10 @@ typedef NS_ENUM(NSInteger, KBBackspaceChunkClass) {
}
switch (gr.state) {
case UIGestureRecognizerStateBegan: {
[[KBBackspaceUndoManager shared] registerNonClearAction];
[self kb_captureDeletionSnapshotIfNeeded];
if (self.showClearLabelEnabled) {
[self kb_capturePendingClearSnapshotIfNeeded];
}
self.backspaceHoldToken += 1;
NSUInteger token = self.backspaceHoldToken;
self.backspaceHoldActive = YES;
@@ -310,6 +317,9 @@ typedef NS_ENUM(NSInteger, KBBackspaceChunkClass) {
[self kb_hideBackspaceClearLabel];
if (shouldClear) {
[self kb_clearAllInput];
} else {
self.pendingClearBefore = nil;
self.pendingClearAfter = nil;
}
}
@@ -421,9 +431,12 @@ typedef NS_ENUM(NSInteger, KBBackspaceChunkClass) {
UIResponder *start = (UIResponder *)([self kb_hostView] ?: self.backspaceButton);
UIInputViewController *ivc = KBFindInputViewController(start);
if (ivc) {
NSString *before = ivc.textDocumentProxy.documentContextBeforeInput ?: @"";
[[KBBackspaceUndoManager shared] recordClearWithContext:before];
NSString *before = self.pendingClearBefore ?: (ivc.textDocumentProxy.documentContextBeforeInput ?: @"");
NSString *after = self.pendingClearAfter ?: (ivc.textDocumentProxy.documentContextAfterInput ?: @"");
[[KBBackspaceUndoManager shared] recordClearWithContextBefore:before after:after];
}
self.pendingClearBefore = nil;
self.pendingClearAfter = nil;
self.backspaceClearToken += 1;
NSUInteger token = self.backspaceClearToken;
[self kb_clearAllInputStepForToken:token guard:0 emptyRounds:0];
@@ -489,4 +502,25 @@ typedef NS_ENUM(NSInteger, KBBackspaceChunkClass) {
return self.backspaceButton.superview;
}
- (void)kb_captureDeletionSnapshotIfNeeded {
if ([KBBackspaceUndoManager shared].hasUndo) { return; }
UIResponder *start = (UIResponder *)([self kb_hostView] ?: self.backspaceButton);
UIInputViewController *ivc = KBFindInputViewController(start);
if (!ivc) { return; }
id<UITextDocumentProxy> proxy = ivc.textDocumentProxy;
[[KBBackspaceUndoManager shared] recordDeletionSnapshotBefore:proxy.documentContextBeforeInput
after:proxy.documentContextAfterInput];
}
- (void)kb_capturePendingClearSnapshotIfNeeded {
if ([KBBackspaceUndoManager shared].hasUndo) { return; }
if (self.pendingClearBefore.length > 0 || self.pendingClearAfter.length > 0) { return; }
UIResponder *start = (UIResponder *)([self kb_hostView] ?: self.backspaceButton);
UIInputViewController *ivc = KBFindInputViewController(start);
if (!ivc) { return; }
id<UITextDocumentProxy> proxy = ivc.textDocumentProxy;
self.pendingClearBefore = proxy.documentContextBeforeInput ?: @"";
self.pendingClearAfter = proxy.documentContextAfterInput ?: @"";
}
@end