WebNSViewExtras.h revision 8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2 
1/*
2 * Copyright (C) 2005, 2006 Apple Computer, Inc.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#import <AppKit/AppKit.h>
30
31#define WebDragImageAlpha 0.75f
32
33@class DOMElement;
34@class WebFrameView;
35@class WebView;
36
37@interface NSView (WebExtras)
38
39// Returns the nearest enclosing view of the given class, or nil if none.
40- (NSView *)_web_superviewOfClass:(Class)viewClass;
41- (WebFrameView *)_web_parentWebFrameView;
42- (WebView *)_webView;
43
44// returns whether a drag should begin starting with mouseDownEvent; if the time
45// passes expiration or the mouse moves less than the hysteresis before the mouseUp event,
46// returns NO, else returns YES.
47- (BOOL)_web_dragShouldBeginFromMouseDown:(NSEvent *)mouseDownEvent
48                           withExpiration:(NSDate *)expiration
49                              xHysteresis:(float)xHysteresis
50                              yHysteresis:(float)yHysteresis;
51
52// Calls _web_dragShouldBeginFromMouseDown:withExpiration:xHysteresis:yHysteresis: with
53// the default values for xHysteresis and yHysteresis
54- (BOOL)_web_dragShouldBeginFromMouseDown:(NSEvent *)mouseDownEvent
55                           withExpiration:(NSDate *)expiration;
56
57// Convenience method. Returns NSDragOperationCopy if _web_bestURLFromPasteboard doesn't return nil.
58// Returns NSDragOperationNone otherwise.
59- (NSDragOperation)_web_dragOperationForDraggingInfo:(id <NSDraggingInfo>)sender;
60
61// Resizes and applies alpha to image and drags it.
62- (void)_web_DragImageForElement:(DOMElement *)element
63                         rect:(NSRect)rect
64                        event:(NSEvent *)event
65                   pasteboard:(NSPasteboard *)pasteboard
66                       source:(id)source
67                       offset:(NSPoint *)dragImageOffset;
68
69- (BOOL)_web_firstResponderIsSelfOrDescendantView;
70
71- (NSRect)_web_convertRect:(NSRect)aRect toView:(NSView *)aView;
72
73@end
74