1/* 2 * Copyright (C) 2007 Apple 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 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 27#ifndef DragClient_h 28#define DragClient_h 29 30#include "DragActions.h" 31#include "DragImage.h" 32#include "IntPoint.h" 33 34#if PLATFORM(MAC) 35OBJC_CLASS DOMElement; 36OBJC_CLASS NSURL; 37OBJC_CLASS NSString; 38#endif 39 40namespace WebCore { 41 42 class Clipboard; 43 class DragData; 44 class Frame; 45 class Image; 46 class HTMLImageElement; 47 48 class DragClient { 49 public: 50 virtual void willPerformDragDestinationAction(DragDestinationAction, DragData*) = 0; 51 virtual void willPerformDragSourceAction(DragSourceAction, const IntPoint&, Clipboard*) = 0; 52 virtual DragDestinationAction actionMaskForDrag(DragData*) = 0; 53 54 virtual DragSourceAction dragSourceActionMaskForPoint(const IntPoint& rootViewPoint) = 0; 55 56 virtual void startDrag(DragImageRef dragImage, const IntPoint& dragImageOrigin, const IntPoint& eventPos, Clipboard*, Frame*, bool linkDrag = false) = 0; 57 58 virtual void dragControllerDestroyed() = 0; 59 60#if PLATFORM(MAC) 61 // Mac-specific helper function to allow access to web archives and NSPasteboard extras in WebKit. 62 // This is not abstract as that would require another #if PLATFORM(MAC) for the SVGImage client empty implentation. 63 virtual void declareAndWriteDragImage(const String&, DOMElement*, NSURL *, NSString *, Frame*) { } 64#endif 65 66 virtual void dragEnded() { } 67 68 virtual ~DragClient() { } 69 }; 70 71} 72 73#endif // !DragClient_h 74 75