1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #import "chrome/browser/ui/cocoa/draggable_button.h" 6 7 #include "base/logging.h" 8 9 @implementation DraggableButton 10 11 - (id)initWithFrame:(NSRect)frame { 12 if ((self = [super initWithFrame:frame])) { 13 draggableButtonImpl_.reset( 14 [[DraggableButtonImpl alloc] initWithButton:self]); 15 } 16 return self; 17 } 18 19 - (id)initWithCoder:(NSCoder*)coder { 20 if ((self = [super initWithCoder:coder])) { 21 draggableButtonImpl_.reset( 22 [[DraggableButtonImpl alloc] initWithButton:self]); 23 } 24 return self; 25 } 26 27 - (DraggableButtonImpl*)draggableButton { 28 return draggableButtonImpl_.get(); 29 } 30 31 - (void)mouseUp:(NSEvent*)theEvent { 32 if ([draggableButtonImpl_ mouseUpImpl:theEvent] == 33 kDraggableButtonMixinCallSuper) { 34 [super mouseUp:theEvent]; 35 } 36 } 37 38 - (void)mouseDown:(NSEvent*)theEvent { 39 // The impl spins an event loop to distinguish clicks from drags, 40 // which could result in our destruction. Wire ourselves down for 41 // the duration. 42 base::scoped_nsobject<DraggableButton> keepAlive([self retain]); 43 44 if ([draggableButtonImpl_ mouseDownImpl:theEvent] == 45 kDraggableButtonMixinCallSuper) { 46 [super mouseDown:theEvent]; 47 } 48 } 49 50 - (void)beginDrag:(NSEvent*)dragEvent { 51 // Must be overridden by subclasses. 52 NOTREACHED(); 53 } 54 55 @end // @interface DraggableButton 56
