On Jan 2, 2009, at 3:45 PM, Mr. Gecko wrote:
Hello, I've been trying to override the NSTextField keyDown method, but it didn't seem to work. I've searched in the archives, but got nowhere, all I could find is to override the text field editor. But how could I do that? This is all very confusing. All I really need to do is when the user push return (36) or enter (76) it will run a method goTo. and eventually I'll want to do the up and down arrows.
You really don't want to do that. What you need to do is to work with the frameworks rather than against them, and everything will go smoothly. NSTextFields and other controls handle all of the standard keystrokes themselves, but of course they allow you to override their behavior at many points. The first thing to do would be to try some of the tutorials that handle text fields, in particular using IB to set up the target-action mechanism.
If that doesn't quite suit your needs, but what you're interested in is learning when a particular field has ended editing, there's a standard notification you can listen for. If you want to customize a text field and give special handling to certain special keys, there's a delegate method -control:textView:doCommandBySelector:.
What you definitely don't want to do is override keyDown:. In the first place, it isn't the text field that gets the keyDown:, but the field editor; but even if you had a custom field editor, you wouldn't want to override keyDown:, because doing so will break most input methods. Dealing with raw key strokes is too crude for the needs of modern text input--that's why we have all of these other override points. Check the archives for my earlier messages on this topic.
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