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 "DragData.h"
30#include "DragItem.h"
31#include "FloatPoint.h"
32#include "IntPoint.h"
33
34namespace WebCore {
35
36class DataTransfer;
37class Element;
38class Frame;
39class Image;
40struct PromisedAttachmentInfo;
41
42class DragClient {
43public:
44 virtual void dragControllerDestroyed() = 0;
45
46 virtual bool useLegacyDragClient() { return true; }
47
48 virtual void willPerformDragDestinationAction(DragDestinationAction, const DragData&) = 0;
49 virtual void willPerformDragSourceAction(DragSourceAction, const IntPoint&, DataTransfer&) = 0;
50 virtual void didConcludeEditDrag() { }
51 virtual DragSourceAction dragSourceActionMaskForPoint(const IntPoint& rootViewPoint) = 0;
52
53 virtual void startDrag(DragItem, DataTransfer&, Frame&) = 0;
54 virtual void dragEnded() { }
55
56 virtual void beginDrag(DragItem, Frame&, const IntPoint&, const IntPoint&, DataTransfer&, DragSourceAction) { }
57
58#if PLATFORM(COCOA)
59 // Mac-specific helper function to allow access to web archives and NSPasteboard extras in WebKit.
60 // This is not abstract as that would require another #if PLATFORM(COCOA) for the SVGImage client empty implentation.
61 virtual void declareAndWriteDragImage(const String&, Element&, const URL&, const String&, Frame*) { }
62#endif
63
64 virtual ~DragClient() = default;
65};
66
67} // namespace WebCore
68