我想出瞭如何使這項工作。
您需要重寫NSTextViews的NSFieldEditor。
提供重寫版本,在NSWindow的委託:
- (id)windowWillReturnFieldEditor:(NSWindow *)sender toObject:(id)client
{
if ([client isKindOfClass:[NSSearchField class]])
{
if (!_mlFieldEditor)
{
_mlFieldEditor = [[MLFieldEditor alloc] init];
[_mlFieldEditor setFieldEditor:YES];
}
return _mlFieldEditor;
}
return nil;
}
_mlFieldEditor是一個實例變量。這裏是定義:
@interface MLFieldEditor : NSTextView
@end
@implementation MLFieldEditor
- (void)insertCompletion:(NSString *)word forPartialWordRange:(NSRange)charRange movement:(NSInteger)movement isFinal:(BOOL)flag
{
// suppress completion if user types a space
if (movement == NSRightTextMovement) return;
// show full replacements
if (charRange.location != 0) {
charRange.length += charRange.location;
charRange.location = 0;
}
[super insertCompletion:word forPartialWordRange:charRange movement:movement isFinal:flag];
if (movement == NSReturnTextMovement)
{
[[NSNotificationCenter defaultCenter] postNotificationName:MLSearchFieldAutocompleted object:self userInfo:nil];
}
}
@end
關鍵部分是[super insertCompletion ...]之後的NSReturnTextMovement。
,第一部分將改變它,以便鍵入空格鍵將不執行自動完成,這是我在做了點評: How to prevent NSSearchField from overwriting entered strings using the first autocompletion list entry?