--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/page/DragController.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,129 @@
+/*
+ * 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 : public Noncopyable {
+    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; }
+        void setDraggingImageURL(const KURL& url) { m_draggingImageURL = url; }
+        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 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*);
+        bool isCopyKeyDown();
+
+        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