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#include "config.h"
27#include "DragController.h"
28
29#include "DataTransfer.h"
30#include "DragData.h"
31#include "Element.h"
32#include "FrameSelection.h"
33#include "Pasteboard.h"
34#include "markup.h"
35#include "windows.h"
36#include <wtf/RefPtr.h>
37
38namespace WebCore {
39
40const int DragController::LinkDragBorderInset = 2;
41const int DragController::MaxOriginalImageArea = 1500 * 1500;
42const int DragController::DragIconRightInset = 7;
43const int DragController::DragIconBottomInset = 3;
44
45const float DragController::DragImageAlpha = 0.75f;
46
47DragOperation DragController::dragOperation(DragData& dragData)
48{
49    //FIXME: to match the macos behaviour we should return DragOperationNone
50    //if we are a modal window, we are the drag source, or the window is an attached sheet
51    //If this can be determined from within WebCore operationForDrag can be pulled into
52    //WebCore itself
53    return dragData.containsURL(0) && !m_didInitiateDrag ? DragOperationCopy : DragOperationNone;
54}
55
56bool DragController::isCopyKeyDown(DragData&)
57{
58    return ::GetAsyncKeyState(VK_CONTROL);
59}
60
61const IntSize& DragController::maxDragImageSize()
62{
63    static const IntSize maxDragImageSize(200, 200);
64
65    return maxDragImageSize;
66}
67
68void DragController::cleanupAfterSystemDrag()
69{
70}
71
72void DragController::declareAndWriteDragImage(DataTransfer& dataTransfer, Element& element, const URL& url, const String& label)
73{
74    Pasteboard& pasteboard = dataTransfer.pasteboard();
75
76    // FIXME: Do we really need this check?
77    if (!pasteboard.writableDataObject())
78        return;
79
80    // Order is important here for Explorer's sake
81    pasteboard.writeURLToWritableDataObject(url, label);
82    pasteboard.writeImageToDataObject(element, url);
83    pasteboard.writeMarkup(createMarkup(element, IncludeNode, 0, ResolveAllURLs));
84}
85
86}
87