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Check out KeyEvents interpretation: but pass unwanted items to the responder chain?

I would really like to have my custom view worked with -moveLeft:, -deleteForward:, -selectAll:and so on, but I would also like to convey any clues, I did not like, right now I overrides -keyDown:for the call [self interpretKeyEvents:[NSArray arrayWithObject:event]];, but it seems to cause all of the key events, even those to which my opinion does not respond.

Is there a way to pass unwanted events in a chain, but still respond to -moveLeft:, etc.? Or do I need to implement all my own actions in -keyDown:order for me to know what I have done and not answered?

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2 answers

, . , -, , , . :

NSTextView ( , ) , .,.

@interface MyTextView : NSTextView {
    NSEvent* _keyDownEvent;
}

@end

: ( ) /:

@implementation MyTextView

- (id)initWithFrame:(NSRect)frame {
    if (self = [super initWithFrame:frame]) {
        _keyDownEvent = nil;
    }

    return self;
}

- (void)keyDown:(NSEvent*)event {
    [_keyDownEvent release];
    _keyDownEvent = [event retain];
    [super keyDown:event];
}

- (void)doCommandBySelector:(SEL)selector {
    if (_keyDownEvent && selector == @selector(noop:)) {
        if ([self nextResponder]) {
            [[self nextResponder] keyDown:[_keyDownEvent autorelease]];
        } else {
            [_keyDownEvent release];
        }
        _keyDownEvent = nil;
    } else {
        [super doCommandBySelector:selector];
    }
}

- (void)dealloc {
    [_keyDownEvent release];

    [super dealloc];
}

@end

. , . , NSBeep(), , GDB:

#0  0x00007fff96eb1c2d in NSBeep ()
#1  0x00007fff96e6d739 in -[NSResponder doCommandBySelector:] ()
#2  0x00007fff96e6d72b in -[NSResponder doCommandBySelector:] ()
#3  0x00007fff96fda826 in -[NSWindow doCommandBySelector:] ()
#4  0x00007fff96e6d72b in -[NSResponder doCommandBySelector:] ()
#5  0x00007fff96e6d72b in -[NSResponder doCommandBySelector:] ()
#6  0x00007fff96e6d72b in -[NSResponder doCommandBySelector:] ()
#7  0x00007fff96e6d72b in -[NSResponder doCommandBySelector:] ()
#8  0x00007fff96e6d72b in -[NSResponder doCommandBySelector:] ()
#9  0x00007fff96e6d72b in -[NSResponder doCommandBySelector:] ()
#10 0x00007fff96e6d72b in -[NSResponder doCommandBySelector:] ()
#11 0x00007fff96f486ce in -[NSTextView doCommandBySelector:] ()
#12 0x00007fff96da1c93 in -[NSKeyBindingManager(NSKeyBindingManager_MultiClients) interpretEventAsCommand:forClient:] ()
#13 0x00007fff970f5382 in -[NSTextInputContext handleEvent:] ()
#14 0x00007fff96fbfd2a in -[NSView interpretKeyEvents:] ()
#15 0x00007fff96f38a25 in -[NSTextView keyDown:] ()
#16 0x0000000100012889 in -[MyTextView keyDown:] (self=0x1004763a0, _cmd=0x7fff972b0234, event=0x100197320) at /path/MyTextView.m:24
#17 0x00007fff96a16b44 in -[NSWindow sendEvent:] ()
#18 0x00007fff969af16d in -[NSApplication sendEvent:] ()
#19 0x00007fff969451f2 in -[NSApplication run] ()
#20 0x00007fff96bc3b88 in NSApplicationMain ()
#21 0x00000001000015e2 in main (argc=3, argv=0x7fff5fbff8f0) at /path/main.m:12

: , "noop" . , . NSTextView noop keyDown . NSWindow KeyDown .

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@daxnitro , , :

import Cocoa

class EditorTextView: NSTextView {

    private var keyDownEvent: NSEvent?

    required init?(coder aCoder: NSCoder) {
        super.init(coder: aCoder)
    }

    override init() {
        super.init()
    }

    override init(frame frameRect: NSRect, textContainer aTextContainer: NSTextContainer!) {
        super.init(frame: frameRect, textContainer: aTextContainer)
    }

    override func keyDown(event: NSEvent) {
        keyDownEvent = event
        super.keyDown(event)
    }

    override func doCommandBySelector(aSelector: Selector) {
        if aSelector != NSSelectorFromString("noop:") {
            super.doCommandBySelector(aSelector)
        } else if  keyDownEvent != nil {
            self.nextResponder?.keyDown(keyDownEvent!)
        }
        keyDownEvent = nil
    }

}
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