Re: editing in a custom NSView
Re: editing in a custom NSView
- Subject: Re: editing in a custom NSView
- From: Jens Alfke <email@hidden>
- Date: Fri, 18 Apr 2008 18:12:19 -0700
On 18 Apr '08, at 4:32 PM, Torsten Curdt wrote:
So I already got a custom view that is manually bound to
NSArrayController and draws the objects. Now I need to make one of
the object's string attributes editable. How to do that best?
I assume I could catch the click on the item, then (somehow) show in
place a NSTextView and have the user do the changes to the text. On
every change I would check the height of the NSTextView and apply
that to the drawing of the item. Once done I'll hide the NSTextView
again. Does that sound like reasonable approach? Or how would you
tackle this?
I'd implement your view as a container of NSTextField views. Listen
for control-text-changed notifications from the subviews, and when you
get one, check the view's field-editor* to see how high its content
is, and update the view's size accordingly (which means moving other
views up or down.)
*Controls with editable text don't do their own text editing. Instead
they swap in a single NSTextView, called the field editor, that's
usually shared between all controls in a window. So while the user's
editing in a text field, you have to look at the field's currentEditor
to get information about the text editing state.
—Jens
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