CODEWITHSUNDEEP
cocoaautocompletenstextfield
Le roukin
Le roukin

Reputation: 95

NSTextfield complete

It is there a solution to have a completion of a NSTextField with method : 

- (NSArray *)control:(NSControl *)control textView:(NSTextView *)textView completions:(NSArray *)words forPartialWordRange:(NSRange)charRange indexOfSelectedItem:(int*)index

with several words and not one? Because when you type a space, the completion start again...

Thanks.

Upvotes: 1

Views: 1301

Answers (1)

Micha Mazaheri
Micha Mazaheri

Reputation: 3481

Better late than never, it might be helpful for others:

It's a little tricky problem, since NSControlTextEditingDelegate / NSTextFieldDelegate doesn't offer a way to solve it directly. What you need to do is creating a custom subclass of NSTextView (yes, text view), and override the method - (NSRange)rangeForUserCompletion:

- (NSRange)rangeForUserCompletion
{
    return [self selectedRange];
}

And then subclass NSTextFieldCell to override the method - (NSTextView *)fieldEditorForView::

- (NSTextView *)fieldEditorForView:(NSView *)aControlView
{
    static MyTextView* _myFieldEditor = nil;
    if (_myFieldEditor == nil) {
        _myFieldEditor = [[MyTextView alloc] init];
        [_myFieldEditor setFieldEditor:YES];
    }
    return _myFieldEditor;
}

Then in Interface Builder, set the class of your text field's cell to your subclass of NSTextFieldCell. What will happen is when your text field becomes first responder, the window will call your cell's -fieldEditorForView: method, and use your custom text view as the field editor. So during editing the value of your text field, any completion will call -(NSRange)rangeForUserCompletion on your text view.

Then you can fine tune your -rangeForUserCompletion to make it return the exact range you want for the completion.

Also, the code in fieldEditorForView: assumes that your app uses only one window, if you are using multiple windows (e.g. document-based apps), you'll have to change it and keep one field editor instance per window.

Hope it helps :)

Upvotes: 4

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