mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
100 lines
3.1 KiB
C++
100 lines
3.1 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 _nsNativeDragTarget_h_
|
|
#define _nsNativeDragTarget_h_
|
|
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIDragSession.h"
|
|
#include <ole2.h>
|
|
#include <shlobj.h>
|
|
|
|
#ifndef IDropTargetHelper
|
|
#include <shobjidl.h> // Vista drag image interfaces
|
|
#endif
|
|
|
|
class nsIDragService;
|
|
class nsIWidget;
|
|
|
|
struct IDataObject;
|
|
|
|
/*
|
|
* nsNativeDragTarget implements the IDropTarget interface and gets most of its
|
|
* behavior from the associated adapter (m_dragDrop).
|
|
*/
|
|
|
|
class nsNativeDragTarget : public IDropTarget
|
|
{
|
|
public:
|
|
nsNativeDragTarget(nsIWidget * aWnd);
|
|
~nsNativeDragTarget();
|
|
|
|
// IUnknown members - see iunknown.h for documentation
|
|
STDMETHODIMP QueryInterface(REFIID, void**);
|
|
STDMETHODIMP_(ULONG) AddRef();
|
|
STDMETHODIMP_(ULONG) Release();
|
|
|
|
// IDataTarget members
|
|
|
|
// Set pEffect based on whether this object can support a drop based on
|
|
// the data available from pSource, the key and mouse states specified
|
|
// in grfKeyState, and the coordinates specified by point. This is
|
|
// called by OLE when a drag enters this object's window (as registered
|
|
// by Initialize).
|
|
STDMETHODIMP DragEnter(LPDATAOBJECT pSource, DWORD grfKeyState,
|
|
POINTL point, DWORD* pEffect);
|
|
|
|
// Similar to DragEnter except it is called frequently while the drag
|
|
// is over this object's window.
|
|
STDMETHODIMP DragOver(DWORD grfKeyState, POINTL point, DWORD* pEffect);
|
|
|
|
// Release the drag-drop source and put internal state back to the point
|
|
// before the call to DragEnter. This is called when the drag leaves
|
|
// without a drop occurring.
|
|
STDMETHODIMP DragLeave();
|
|
|
|
// If point is within our region of interest and pSource's data supports
|
|
// one of our formats, get the data and set pEffect according to
|
|
// grfKeyState (DROPEFFECT_MOVE if the control key was not pressed,
|
|
// DROPEFFECT_COPY if the control key was pressed). Otherwise return
|
|
// E_FAIL.
|
|
STDMETHODIMP Drop(LPDATAOBJECT pSource, DWORD grfKeyState,
|
|
POINTL point, DWORD* pEffect);
|
|
/**
|
|
* Cancel the current drag session, if any.
|
|
*/
|
|
void DragCancel();
|
|
|
|
protected:
|
|
|
|
void GetGeckoDragAction(DWORD grfKeyState, LPDWORD pdwEffect,
|
|
PRUint32 * aGeckoAction);
|
|
void ProcessDrag(PRUint32 aEventType, DWORD grfKeyState,
|
|
POINTL pt, DWORD* pdwEffect);
|
|
void DispatchDragDropEvent(PRUint32 aType, POINTL pt);
|
|
void AddLinkSupportIfCanBeGenerated(LPDATAOBJECT aIDataSource);
|
|
|
|
// Native Stuff
|
|
ULONG m_cRef; // reference count
|
|
HWND mHWnd;
|
|
DWORD mEffectsAllowed;
|
|
DWORD mEffectsPreferred;
|
|
bool mTookOwnRef;
|
|
|
|
// Gecko Stuff
|
|
nsIWidget * mWindow;
|
|
nsIDragService * mDragService;
|
|
// Drag target helper
|
|
IDropTargetHelper * GetDropTargetHelper();
|
|
|
|
|
|
private:
|
|
// Drag target helper
|
|
IDropTargetHelper * mDropTargetHelper;
|
|
};
|
|
|
|
#endif // _nsNativeDragTarget_h_
|
|
|
|
|