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/*
* Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DragController_h
#define DragController_h
#include "DragActions.h"
#include "DragImage.h"
#include "IntPoint.h"
#include "KURL.h"
namespace WebCore {
class Clipboard;
class Document;
class DragClient;
class DragData;
class Element;
class Frame;
class Image;
class IntRect;
class Node;
class Page;
class PlatformMouseEvent;
class Range;
class SelectionController;
class DragController {
WTF_MAKE_NONCOPYABLE(DragController); WTF_MAKE_FAST_ALLOCATED;
public:
DragController(Page*, DragClient*);
~DragController();
DragClient* client() const { return m_client; }
DragOperation dragEntered(DragData*);
void dragExited(DragData*);
DragOperation dragUpdated(DragData*);
bool performDrag(DragData*);
// FIXME: It should be possible to remove a number of these accessors once all
// drag logic is in WebCore.
void setDidInitiateDrag(bool initiated) { m_didInitiateDrag = initiated; }
bool didInitiateDrag() const { return m_didInitiateDrag; }
void setIsHandlingDrag(bool handling) { m_isHandlingDrag = handling; }
bool isHandlingDrag() const { return m_isHandlingDrag; }
DragOperation sourceDragOperation() const { return m_sourceDragOperation; }
const KURL& draggingImageURL() const { return m_draggingImageURL; }
void setDragOffset(const IntPoint& offset) { m_dragOffset = offset; }
const IntPoint& dragOffset() const { return m_dragOffset; }
DragSourceAction dragSourceAction() const { return m_dragSourceAction; }
Document* documentUnderMouse() const { return m_documentUnderMouse.get(); }
DragDestinationAction dragDestinationAction() const { return m_dragDestinationAction; }
DragSourceAction delegateDragSourceAction(const IntPoint& pagePoint);
bool mayStartDragAtEventLocation(const Frame*, const IntPoint& framePos, Node*);
void dragEnded();
void placeDragCaret(const IntPoint&);
bool startDrag(Frame* src, Clipboard*, DragOperation srcOp, const PlatformMouseEvent& dragEvent, const IntPoint& dragOrigin, bool isDHTMLDrag);
static const IntSize& maxDragImageSize();
static const int LinkDragBorderInset;
static const int MaxOriginalImageArea;
static const int DragIconRightInset;
static const int DragIconBottomInset;
static const float DragImageAlpha;
private:
bool dispatchTextInputEventFor(Frame*, DragData*);
bool canProcessDrag(DragData*);
bool concludeEditDrag(DragData*);
DragOperation dragEnteredOrUpdated(DragData*);
DragOperation operationForLoad(DragData*);
bool tryDocumentDrag(DragData*, DragDestinationAction, DragOperation&);
bool tryDHTMLDrag(DragData*, DragOperation&);
DragOperation dragOperation(DragData*);
void cancelDrag();
bool dragIsMove(SelectionController*, DragData*);
bool isCopyKeyDown(DragData*);
void mouseMovedIntoDocument(Document*);
IntRect selectionDraggingRect(Frame*);
bool doDrag(Frame* src, Clipboard* clipboard, DragImageRef dragImage, const KURL& linkURL, const KURL& imageURL, Node* node, IntPoint& dragLoc, IntPoint& dragImageOffset);
void doImageDrag(Element*, const IntPoint&, const IntRect&, Clipboard*, Frame*, IntPoint&);
void doSystemDrag(DragImageRef, const IntPoint&, const IntPoint&, Clipboard*, Frame*, bool forLink);
void cleanupAfterSystemDrag();
Page* m_page;
DragClient* m_client;
RefPtr<Document> m_documentUnderMouse; // The document the mouse was last dragged over.
RefPtr<Document> m_dragInitiator; // The Document (if any) that initiated the drag.
DragDestinationAction m_dragDestinationAction;
DragSourceAction m_dragSourceAction;
bool m_didInitiateDrag;
bool m_isHandlingDrag;
DragOperation m_sourceDragOperation; // Set in startDrag when a drag starts from a mouse down within WebKit
IntPoint m_dragOffset;
KURL m_draggingImageURL;
};
}
#endif
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