NSTextField自动完成

Question

有没有人知道任何可以实现NSTextField自动完成的类或库？

我试图让标准的自动完成工作,但它是作为一个同步api.我通过互联网上的api电话获得自动完成的话.

到目前为止我做了什么:

- (void)controlTextDidChange:(NSNotification *)obj
{
    if([obj object] == self.searchField)
    {
        [self.spinner startAnimation:nil];
        [self.wordcompletionStore completeString:self.searchField.stringValue];

        if(self.doingAutocomplete)
            return;
        else
        {
            self.doingAutocomplete = YES;
            [[[obj userInfo] objectForKey:@"NSFieldEditor"] complete:nil];
        }
    }
}

当我的商店完成后,我有一个被调用的委托:

- (void) completionStore:(WordcompletionStore *)store didFinishWithWords:(NSArray *)arrayOfWords
{
    [self.spinner stopAnimation:nil];
    self.completions = arrayOfWords;
    self.doingAutocomplete = NO;
}

将完成列表返回到nstextfield的代码是:

- (NSArray *)control:(NSControl *)control textView:(NSTextView *)textView completions:(NSArray *)words forPartialWordRange:(NSRange)charRange indexOfSelectedItem:(NSInteger *)index
{
    *index = -1;
    return self.completions;
}

我的问题是,这将始终是1个请求,完成列表仅显示用户输入的每个第2个字符.

我试图搜索谷歌和SO像疯子一样,但我似乎无法找到任何解决方案..

任何帮助深表感谢.

Answer 1

不要让布尔属性为doneAutocomplete,而是将属性作为发出请求的控件.我们称之为autoCompleteRequestor:

@property (strong) NSControl* autoCompleteRequestor;

因此,您将当前属性doesAutocomplete设置为YES,而是存储对控件的引用.

- (void)controlTextDidChange:(NSNotification *)obj
{
    if([obj object] == self.searchField)
    {
        [self.spinner startAnimation:nil];
        [self.wordcompletionStore completeString:self.searchField.stringValue];

        if(self.autoCompleteRequestor)
            return;
        else
        {
            self.autoCompleteRequestor = [[obj userInfo] objectForKey:@"NSFieldEditor"];
        }
    }
}

现在,当您的Web请求完成后,您可以在存储的对象上调用complete :.

- (void) completionStore:(WordcompletionStore *)store didFinishWithWords:(NSArray *)arrayOfWords
{
    [self.spinner stopAnimation:nil];
    self.completions = arrayOfWords;
    if (self.autoCompleteRequestor)
    {
       [self.autoCompleteRequestor complete:nil];
       self.autoCompleteRequestor = nil;
    }
}