188 lines
8.4 KiB
C
188 lines
8.4 KiB
C
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/*****************************************************************************\
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FILE: ftpdrop.h - IDropTarget interface
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Remarks:
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Note that you cannot create a shortcut on an FTP site. Although
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there's nothing technically preventing it, it's not done because
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the shortcut won't be of much use on an FTP site. (It points to
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your local machine, which doesn't help much for people not on the
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same network!)
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If you really want to put a shortcut file on an FTP site, create
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it on the desktop, then drag the shortcut onto the FTP site.
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The default verb for FTP sites is always "Copy". This is true
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even if an intra-site drag-drop is being done.
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DESCRIPTION:
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DefView will cache the IDropTarget pointer (CFtpDrop) for a shell extension.
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When it calls CFtpDrop::Drop(), the work needs to be done on a background
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thread in order to not block the UI thread. The problem is that if the user
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does another drag to the same Ftp Window, CFtpDrop::Drop() will be called again.
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For this reasons, CFtpDrop::Drop() cannot have any state after it returns.
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In order to accomplish this with the asynch background thread, we have
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CFtpDrop::Drop() call CDropOperation_Create(), and then CDropOperation->DoOperation().
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And then it will orphan (call Release()) the CDropOperation. The CDropOperation
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will then destroy itself when the copy is finishes. This enables subsequent calls
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to CFtpDrop::Drop() to spawn separate CDropOperation objects so each can maintain
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the state for that specifc operation and CFtpDrop remains stateless.
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\*****************************************************************************/
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#ifndef _FTPDROP_H
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#define _FTPDROP_H
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#include "util.h"
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typedef enum OPS
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{ // Overwrite prompt status
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opsPrompt, // Prompt each collision
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opsYesToAll, // Overwrite unconditionally
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opsNoToAll, // Never overwrite
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opsCancel, // Stop the operation
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} OPS;
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#define COHDI_FILESIZE_COUNT 5
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#define COHDI_COPY_FILES 6
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typedef struct tagCOPYONEHDROPINFO
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{
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CFtpFolder * pff;
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LPCWSTR pszFSSource;
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LPCWSTR pszFtpDest;
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LPCWSTR pszDir;
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DWORD dwOperation; // COHDI_FILESIZE_COUNT, COHDI_COPY_FILES, etc.
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OPS ops;
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BOOL fIsRoot;
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CMultiLanguageCache * pmlc;
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LPITEMIDLIST pidlServer;
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BOOL fFireChangeNotify; // Don't fire change notify on BrowserOnly when replacing a file.
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PROGRESSINFO progInfo;
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} COPYONEHDROPINFO, * LPCOPYONEHDROPINFO;
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typedef HRESULT (*STREAMCOPYPROC)(IStream * pstm, DWORD dwFlags, DWORD dwFileSizeHigh, DWORD dwFileSizeLow, LPVOID pv, ULARGE_INTEGER *pqw);
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#ifdef UNICODE
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#define _EnumOneHdrop _EnumOneHdropW
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#else // UNICODE
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#define _EnumOneHdrop _EnumOneHdropA
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#endif // UNICODE
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/*****************************************************************************\
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CFtpDrop
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de and pde are rather gnarly.
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pde is where the output drop effect is kept. A drop handler
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can force the effect to be DROPEFFECT_COPY if it encounters a
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situation that indicates that the source shouldn't be deleted.
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(E.g., if a file is not copied due to an illegal file name.)
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de is where the current effect is kept. A drop handler
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should consult de to decide whether or not the source
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should be deleted. (Used by the HDROP handler, because it is
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the drop target's responsibility to delete the source of an
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HDROP if applicable.)
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You should read from de and write to *pde. Don't
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write to de or read from *pde.
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The overwrite prompting state tells us how to handle
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the case where an incoming file collides with an existing file.
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DESCRIPTION:
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DefView will cache the IDropTarget pointer (CFtpDrop) for a shell extension.
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When it calls CFtpDrop::Drop(), the work needs to be done on a background
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thread in order to not block the UI thread. The problem is that if the user
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does another drag to the same Ftp Window, CFtpDrop::Drop() will be called again.
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For this reasons, CFtpDrop::Drop() cannot have any state after it returns.
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In order to accomplish this with the asynch background thread, we have
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CFtpDrop::Drop() call CDropOperation_Create(), and then CDropOperation->DoOperation().
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And then it will orphan (call Release()) the CDropOperation. The CDropOperation
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will then destroy itself when the copy is finishes. This enables subsequent calls
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to CFtpDrop::Drop() to spawn separate CDropOperation objects so each can maintain
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the state for that specifc operation and CFtpDrop remains stateless.
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\*****************************************************************************/
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class CFtpDrop : public IDropTarget
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{
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public:
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//////////////////////////////////////////////////////
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// Public Interfaces
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//////////////////////////////////////////////////////
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// *** IUnknown ***
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virtual STDMETHODIMP_(ULONG) AddRef(void);
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virtual STDMETHODIMP_(ULONG) Release(void);
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virtual STDMETHODIMP QueryInterface(REFIID riid, LPVOID * ppvObj);
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// *** IDropTarget ***
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virtual STDMETHODIMP DragEnter(IDataObject *pdtobj, DWORD grfKeyState, POINTL pt, DWORD *pdwEffect);
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virtual STDMETHODIMP DragOver(DWORD grfKeyState, POINTL pt, DWORD *pdwEffect);
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virtual STDMETHODIMP DragLeave(void);
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virtual STDMETHODIMP Drop(IDataObject *pdtobj, DWORD grfKeyState, POINTL pt, DWORD *pdwEffect);
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public:
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CFtpDrop();
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~CFtpDrop(void);
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// Public Member Functions
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DWORD GetEffectsAvail(IDataObject * pdto);
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STDMETHODIMP EnumHdrop(HGLOBAL hdrop, HGLOBAL hmap, BOOL fCopy);
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static HRESULT _CopyHglobal(IStream * pstm, DWORD dwFlags, DWORD dwFileSizeHigh, DWORD dwFileSizeLow, LPVOID pvSrc, ULARGE_INTEGER *pqw);
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static HRESULT CopyStream(IStream * pstm, DWORD dwFlags, DWORD dwFileSizeHigh, DWORD dwFileSizeLow, LPVOID pvSrc, ULARGE_INTEGER *pqw);
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// Friend Functions
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friend HRESULT CFtpDrop_Create(CFtpFolder * pff, HWND hwnd, CFtpDrop ** ppfm);
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protected:
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// Protected Member Variables
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int m_cRef;
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CFtpFolder * m_pff; // The owner
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CFtpDir * m_pfd; // The FtpDir of the owner
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HWND m_hwnd; // The window being drug over
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DWORD m_grfks; // Last grfKeyState seen
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DWORD m_grfksAvail; // Effects available
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DROPEFFECT m_de; // Effect being performed
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DROPEFFECT * m_pde; // Output effect
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OPS m_ops; // Overwrite prompting state
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int m_cobj; // Number of objects being dropped
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// Private Member Functions
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HRESULT SetEffect(DROPEFFECT * pde);
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HRESULT _InvokePaste(LPCMINVOKECOMMANDINFO pici);
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BOOL _HasData(IDataObject * pdto, FORMATETC * pformatetc) { return (S_OK == pdto->QueryGetData(pformatetc)); };
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DROPEFFECT GetEffect(POINTL pt);
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HRESULT CopyStorage(LPCTSTR pszFile, IStorage * pstgIn);
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HRESULT CopyHdrop(IDataObject * pdto, STGMEDIUM *psm);
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HRESULT CopyAsStream(LPCTSTR pszName, DWORD dwFileAttributes, DWORD dwFlags, DWORD dwFileSizeHigh, DWORD dwFileSizeLow, STREAMCOPYPROC pfn, LPVOID pv);
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HRESULT CopyFCont(LPCTSTR pszName, DWORD dwFileAttributes, DWORD dwFlags, DWORD dwFileSizeHigh, DWORD dwFileSizeLow, STGMEDIUM *psm);
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HRESULT CopyFGD(IDataObject * pdto, STGMEDIUM *psm, BOOL fUnicode);
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HRESULT _Copy(IDataObject * pdto);
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HRESULT _CopyOneHdrop(LPCTSTR pszFSSource, LPCTSTR pszFtpDest, IProgressDialog * ppd);
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HRESULT _StartBackgroundInteration(void);
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HRESULT _DoCountIteration(void);
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HRESULT _GetFSSourcePaths(HGLOBAL hdrop, BOOL * pfAnsi);
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HRESULT _GetFtpDestPaths(HGLOBAL hmap, BOOL fAnsi);
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private:
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// Private Member Variables
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LPCTSTR m_pszzFSSource; // Paths
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LPCTSTR m_pszzFtpDest; // Map
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HRESULT _CalcSizeOneHdrop(LPCWSTR pszFSSource, LPCWSTR pszFtpDest, IProgressDialog * ppd);
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HRESULT _GetFileDescriptor(LONG nIndex, LPFILEGROUPDESCRIPTORW pfgdW, LPFILEGROUPDESCRIPTORA pfgdA, BOOL fUnicode, LPFILEDESCRIPTOR pfd);
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HRESULT _CreateFGDDirectory(LPFILEDESCRIPTOR pfd);
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BOOL _IsFTPOperationAllowed(IDataObject * pdto);
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CFtpDir * _GetRelativePidl(LPCWSTR pszFullPath, DWORD dwFileAttributes, DWORD dwFileSizeHigh, DWORD dwFileSizeLow, LPITEMIDLIST * ppidl);
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};
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#endif // _FTPDROP_H
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