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 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 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 #pragma once 27 28 #include "DragActions.h" 29 #include "DragImage.h" 30 #include "FloatPoint.h" 31 #include "IntPoint.h" 32 33 namespace WebCore { 34 35 class DataTransfer; 36 class DragData; 37 class Element; 38 class Frame; 39 class Image; 40 41 class DragClient { 42 public: 43 virtual void dragControllerDestroyed() = 0; 44 45 virtual void willPerformDragDestinationAction(DragDestinationAction, const DragData&) = 0; 46 virtual void willPerformDragSourceAction(DragSourceAction, const IntPoint&, DataTransfer&) = 0; 47 virtual DragDestinationAction actionMaskForDrag(const DragData&) = 0; 48 virtual DragSourceAction dragSourceActionMaskForPoint(const IntPoint& rootViewPoint) = 0; 49 50 virtual void startDrag(DragImage, const IntPoint& dragImageOrigin, const IntPoint& eventPos, const FloatPoint& dragImageAnchor, DataTransfer&, Frame&, DragSourceAction) = 0; 51 virtual void dragEnded() { } 52 53 #if PLATFORM(COCOA) 54 // Mac-specific helper function to allow access to web archives and NSPasteboard extras in WebKit. 55 // This is not abstract as that would require another #if PLATFORM(COCOA) for the SVGImage client empty implentation. 56 virtual void declareAndWriteDragImage(const String&, Element&, const URL&, const String&, Frame*) { } 57 #if ENABLE(ATTACHMENT_ELEMENT) 58 virtual void declareAndWriteAttachment(const String&, Element&, const URL&, const String&, Frame*) { } 59 #endif 60 #endif 61 62 virtual ~DragClient() { } 63 }; 64 65 } // namespace WebCore