Re: NSTextView with custom space width
Re: NSTextView with custom space width
- Subject: Re: NSTextView with custom space width
- From: Ross Carter <email@hidden>
- Date: Thu, 21 Apr 2011 10:07:26 -0400
On Apr 21, 2011, at 6:35 AM, Michael Dautermann wrote:
> On Apr 18, 2011, at 5:37 AM, Дмитрий Николаев wrote:
>> I need to implement custom separator with custom width between two part of paragraph in text view:
>>
>> AAAA AA A BBB BBBBB B
>>
>> This is separator must be included as non-editable character. So user can't delete it or modify.
>> I understand, that i must overload standard behavior of textview in some points (for example, when user press "delete" right after separator nothing will be deleted)
>
> The potential user interface you're describing sounds quite scary. Are you certain the end result is going to make sense to customers?
>
> But anyways, to get to where you want to be, look at the [NSTextViewDelegate textView: shouldChangeTextInRange: replacementString:] method or -- since you're likely to be subclassing NSTextView in order to do custom drawing of whatever character / thing you're going to use as a separator -- you can also look at [NSTextView shouldChangeTextInRange: replacementString:].
>
> If these methods are called and the range crosses your "non-editable" character, you can return NO and disallow the user from deleting anything that includes that separator.
I agree with Michael that your proposed interface seems quite strange. Perhaps if we knew what you are trying to achieve we could propose a different solution. I can't tell if you are trying to separate a paragraph into left and right halves, adding arbitrary space after certain words or characters, or something else.
Ross_______________________________________________
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