Re: Overriding NSCell's editWithFrame:...
Re: Overriding NSCell's editWithFrame:...
- Subject: Re: Overriding NSCell's editWithFrame:...
- From: Mike Abdullah <email@hidden>
- Date: Wed, 4 Oct 2006 10:55:13 +0100
I don't know - you've reached the edge of my knowledge on the subject
I'm afraid!
Mike.
On 3 Oct 2006, at 19:20, David Aames wrote:
Hello Mike,
Firstly I would like to thank you for your help. That's very kind
of you. So the algorithm is (as far as I understand):
1. Get a pointer to the field editor (it's passed to me in the
function)
2. Make it a subview of the control view
3. Adjust the field editor's frame so it completely covers my drawn
text
4. Set the text of the field editor using its setString: method
Is that it? Do I have to call some other method to start the
editing or not?
Thanks very much,
David
On 3 Oct 2006, at 18:56, Mike Abdullah wrote:
I have to agree with you, Apple's docs aren;t too amazing on this
topic. I shall (attempt!) to explain:
Basically, when you edit some text, you use an NSTextView.
However, imagine you have 50 or so NSTextViews in your app, it
will get bogged down quite a bit!
So instead, we have NSTextField which is more "lightweight."
Additionally, every window has a Field Editor which is a single
instance of NSTextView.
When an NSTextFieldCell (or similar class) wants to edit some
text, it gets the field editor from the window and positions it
above itself. The user types into this NSTextView, and it is this
which provides the focus ring above the control.
So, in your method, you basically need to get the field editor
from the window and make it a subview of your controlview.
Mike.
On 3 Oct 2006, at 17:53, David Aames wrote:
Hello Mike,
I did and it included just general information and nothing
specific on implementing editWithFrame: from scratch.
Thanks
On 3 Oct 2006, at 11:53, Mike Abdullah wrote:
I think you need to read up on the window's fieldEditor.
Mike.
On 3 Oct 2006, at 02:26, David Aames wrote:
Hello all,
I'm writing my own NSCell and I want to be able to edit my cell
so I would like to learn the proper way of implementing this
method (editWithFrame:inView:editor:delegate:event:). I cannot
really understand what this method is supposed to do. I'm
deliberately not subclassing NSTextFieldCell to use it's
implementation of this method. So what am I supposed to do in
this method? I can get the text for this cell and also modify
the rectangle to match my text but how do I display the editing
rectangle and everything else? Has anyone actually overridden
this method without using the super implementation?
Thanks,
David
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