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/toolbar/toolbar_button.h" 6 7 @implementation ToolbarButton 8 9 @synthesize handleMiddleClick = handleMiddleClick_; 10 11 - (void)otherMouseDown:(NSEvent*)theEvent { 12 if (![self shouldHandleEvent:theEvent]) { 13 [super otherMouseDown:theEvent]; 14 return; 15 } 16 17 NSEvent* nextEvent = theEvent; 18 BOOL isInside; 19 20 // Loop until middle button is released. Also, the mouse cursor is outside of 21 // the button, the button should not be highlighted. 22 do { 23 NSPoint mouseLoc = [self convertPoint:[nextEvent locationInWindow] 24 fromView:nil]; 25 isInside = [self mouse:mouseLoc inRect:[self bounds]]; 26 [self highlight:isInside]; 27 [self setState:isInside ? NSOnState : NSOffState]; 28 29 NSUInteger mask = NSOtherMouseDraggedMask | NSOtherMouseUpMask; 30 nextEvent = [[self window] nextEventMatchingMask:mask]; 31 } while (!([nextEvent buttonNumber] == 2 && 32 [nextEvent type] == NSOtherMouseUp)); 33 34 // Discard the events before the middle button up event. 35 // If we don't discard it, the events will be re-processed later. 36 [[self window] discardEventsMatchingMask:NSAnyEventMask 37 beforeEvent:nextEvent]; 38 39 [self highlight:NO]; 40 [self setState:NSOffState]; 41 if (isInside) 42 [self sendAction:[self action] to:[self target]]; 43 } 44 45 - (BOOL)shouldHandleEvent:(NSEvent*)theEvent { 46 // |buttonNumber| is the mouse button whose action triggered theEvent. 47 // 2 corresponds to the middle mouse button. 48 return handleMiddleClick_ && [theEvent buttonNumber] == 2; 49 } 50 51 @end 52
