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98 lines
2 KiB
Mathematica
98 lines
2 KiB
Mathematica
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/*
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NSObjectProtocols.h
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Various informal protocols.
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Copyright (C) 1999 Free Software Foundation, Inc.
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Author: Adam Fedor <fedor@gnu.org>
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Date: Jul 1999
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This file is part of the GNUstep GUI Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <AppKit/NSDragging.h>
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@implementation NSObject (NSDraggingDestination)
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//
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// Before the Image is Released
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//
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- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
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{
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return NSDragOperationNone;
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}
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- (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender
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{
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return NSDragOperationNone;
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}
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- (void)draggingExited:(id <NSDraggingInfo>)sender
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{
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}
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//
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// After the Image is Released
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//
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- (BOOL)prepareForDragOperation:(id <NSDraggingInfo>)sender
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{
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return NO;
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}
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- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
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{
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return NO;
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}
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- (void)concludeDragOperation:(id <NSDraggingInfo>)sender
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{
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}
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@end
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@implementation NSObject (NSDraggingSource)
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//
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// Querying the Source
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//
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- (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)isLocal
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{
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return NSDragOperationNone;
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}
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- (BOOL)ignoreModifierKeysWhileDragging
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{
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return NO;
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}
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//
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// Informing the Source
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//
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- (void)draggedImage:(NSImage *)image
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beganAt:(NSPoint)screenPoint
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{
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}
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- (void)draggedImage: (NSImage*)image
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endedAt: (NSPoint)screenPoint
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deposited: (BOOL)didDeposit
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{
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}
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@end
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