NSTextField: drag-and-drop + Command keypresses
NSTextField: drag-and-drop + Command keypresses
- Subject: NSTextField: drag-and-drop + Command keypresses
- From: Alex Reynolds <email@hidden>
- Date: Fri, 20 Oct 2006 06:35:12 -0400
I have a NSTextField which I subclassed and enabled with the
NSDraggingInfo protocol. I set the delegate of this NSTextField and
its enclosing NSWindow to my custom Controller class.
Drag and drop works. Specifically I am dragging a file or URL object
from a web browser into the NSTextField. It inserts the URI into the
insertion point within the NSTextField.
However, I would like to do the following:
1. I would like to replace all the text inside the NSTextField with
the URI contained inside the NSPasteboard object
2. Enable Command-C, Command-V etc. keypresses, to be able to copy
and paste from the NSPasteboard into my NSTextField
How can I add these features?
To try to answer 1. I looked at the following method which I obtained
from http://www.stone.com/The_Cocoa_Files/
Ins_and_Outs_of_Drag_and_D.html:
- (unsigned int) draggingEnteredOrUpdated:(id <NSDraggingInfo>)sender
{
// we want to ignore drags originating in our own window:
if ([sender draggingSource] == controllerWindow)
{
return NSDragOperationNone;
}
else
{
unsigned int sourceMask = [sender draggingSourceOperationMask];
NSPasteboard *pboard = [sender draggingPasteboard];
NSString *type = [pboard availableTypeFromArray:[self
acceptableDragTypes]];
if (type) return sourceMask;
NSLog (@"Type: %s",type);
return NSDragOperationNone;
}
}
I tried adding NSLog statements within this method to track what data
gets passed around. Unfortunately, the above NSLog never gets called
for some reason, even though the drag-and-drop appears to work. Is
there another method being called?
To try to answer 2., I have subclassed the enclosing NSWindow to
handle sendEvent:
- (void) sendEvent: (NSEvent *) theEvent
{
if (([theEvent type]==NSKeyDown) && ([theEvent keyCode] == 53))
{
[[NSNotificationCenter defaultCenter]
postNotificationName:@"notifyEscapeKeyPressed" object:self];
}
[super sendEvent: theEvent];
}
Is this overriding my ability to send Command keypresses to the
custom NSTextField object?
If I am calling the super's sendEvent:, why wouldn't this just pass
on Command-keypresses upwards?
Thanks for any advice!
Regards,
Alex
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