зеркало из https://github.com/mozilla/gecko-dev.git
67 строки
2.0 KiB
C++
67 строки
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
#ifndef _nsNativeDragSource_h_
|
|
#define _nsNativeDragSource_h_
|
|
|
|
#include "nscore.h"
|
|
#include "nsIDOMDataTransfer.h"
|
|
#include "nsCOMPtr.h"
|
|
#include <ole2.h>
|
|
#include <oleidl.h>
|
|
#include "mozilla/Attributes.h"
|
|
|
|
//class nsIDragSource;
|
|
|
|
/*
|
|
* nsNativeDragSource implements the IDropSource interface and gets
|
|
* most of its behavior from the associated adapter (m_dragDrop).
|
|
*/
|
|
class nsNativeDragSource final : public IDropSource
|
|
{
|
|
public:
|
|
|
|
// construct an nsNativeDragSource referencing adapter
|
|
// nsNativeDragSource(nsIDragSource * adapter);
|
|
explicit nsNativeDragSource(nsIDOMDataTransfer* aDataTransfer);
|
|
~nsNativeDragSource();
|
|
|
|
// IUnknown methods - see iunknown.h for documentation
|
|
|
|
STDMETHODIMP QueryInterface(REFIID, void**);
|
|
STDMETHODIMP_(ULONG) AddRef();
|
|
STDMETHODIMP_(ULONG) Release();
|
|
|
|
// IDropSource methods - see idropsrc.h for documentation
|
|
|
|
// Return DRAGDROP_S_USEDEFAULTCURSORS if this object lets OLE provide
|
|
// default cursors, otherwise return NOERROR. This method gets called in
|
|
// response to changes that the target makes to dEffect (DragEnter,
|
|
// DragOver).
|
|
STDMETHODIMP GiveFeedback(DWORD dEffect);
|
|
|
|
// This method gets called if there is any change in the mouse or key
|
|
// state. Return DRAGDROP_S_CANCEL to stop the drag, DRAGDROP_S_DROP
|
|
// to execute the drop, otherwise NOERROR.
|
|
STDMETHODIMP QueryContinueDrag(BOOL fESC, DWORD grfKeyState);
|
|
|
|
bool UserCancelled() { return mUserCancelled; }
|
|
|
|
protected:
|
|
// Reference count
|
|
ULONG m_cRef;
|
|
|
|
// Data object, hold information about cursor state
|
|
nsCOMPtr<nsIDOMDataTransfer> mDataTransfer;
|
|
|
|
// Custom drag cursor
|
|
HCURSOR m_hCursor;
|
|
|
|
// true if the user cancelled the drag by pressing escape
|
|
bool mUserCancelled;
|
|
};
|
|
|
|
#endif // _nsNativeDragSource_h_
|
|
|