зеркало из https://github.com/mozilla/pjs.git
168 строки
6.4 KiB
C++
168 строки
6.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Kyle Huey <me@kylehuey.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _NSDATAOBJCOLLECTION_H_
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#define _NSDATAOBJCOLLECTION_H_
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#include <oleidl.h>
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#include "nsString.h"
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#include "nsTArray.h"
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#include "nsAutoPtr.h"
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#include "nsDataObj.h"
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class CEnumFormatEtc;
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#define MULTI_MIME "Mozilla/IDataObjectCollectionFormat"
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EXTERN_C const IID IID_IDataObjCollection;
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// An interface to make sure we have the right kind of object for D&D
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// this way we can filter out collection objects that aren't ours
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class nsIDataObjCollection : public IUnknown {
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public:
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};
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/*
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* This ole registered class is used to facilitate drag-drop of objects which
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* can be adapted by an object derived from CfDragDrop. The CfDragDrop is
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* associated with instances via SetDragDrop().
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*/
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class nsDataObjCollection : public nsIDataObjCollection, public nsDataObj
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{
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public:
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nsDataObjCollection();
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~nsDataObjCollection();
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public: // IUnknown methods - see iunknown.h for documentation
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STDMETHODIMP_(ULONG) AddRef ();
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STDMETHODIMP QueryInterface(REFIID, void**);
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STDMETHODIMP_(ULONG) Release ();
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public: // DataGet and DataSet helper methods
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virtual HRESULT AddSetFormat(FORMATETC& FE);
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virtual HRESULT AddGetFormat(FORMATETC& FE);
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virtual HRESULT GetFile(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
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virtual HRESULT GetText(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
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virtual HRESULT GetFileDescriptors(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
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virtual HRESULT GetFileContents(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
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virtual HRESULT GetFirstSupporting(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
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// support for clipboard
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void AddDataFlavor(const char * aDataFlavor, LPFORMATETC aFE);
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// from nsPIDataObjCollection
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void AddDataObject(IDataObject * aDataObj);
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PRInt32 GetNumDataObjects() { return mDataObjects.Length(); }
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nsDataObj* GetDataObjectAt(PRUint32 aItem)
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{ return mDataObjects.SafeElementAt(aItem, nsRefPtr<nsDataObj>()); }
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// Return the registered OLE class ID of this object's CfDataObj.
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CLSID GetClassID() const;
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public:
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// Store data in pSTM according to the format specified by pFE, if the
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// format is supported (supported formats are specified in CfDragDrop::
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// GetFormats) and return NOERROR; otherwise return DATA_E_FORMATETC. It
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// is the callers responsibility to free pSTM if NOERROR is returned.
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STDMETHODIMP GetData (LPFORMATETC pFE, LPSTGMEDIUM pSTM);
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// Similar to GetData except that the caller allocates the structure
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// referenced by pSTM.
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STDMETHODIMP GetDataHere (LPFORMATETC pFE, LPSTGMEDIUM pSTM);
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// Returns S_TRUE if this object supports the format specified by pSTM,
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// S_FALSE otherwise.
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STDMETHODIMP QueryGetData (LPFORMATETC pFE);
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// Set pCanonFE to the canonical format of pFE if one exists and return
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// NOERROR, otherwise return DATA_S_SAMEFORMATETC. A canonical format
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// implies an identical rendering.
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STDMETHODIMP GetCanonicalFormatEtc (LPFORMATETC pFE, LPFORMATETC pCanonFE);
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// Set this objects data according to the format specified by pFE and
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// the storage medium specified by pSTM and return NOERROR, if the format
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// is supported. If release is TRUE this object must release the storage
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// associated with pSTM.
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STDMETHODIMP SetData (LPFORMATETC pFE, LPSTGMEDIUM pSTM, BOOL release);
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// Set ppEnum to an IEnumFORMATETC object which will iterate all of the
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// data formats that this object supports. direction is either DATADIR_GET
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// or DATADIR_SET.
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STDMETHODIMP EnumFormatEtc (DWORD direction, LPENUMFORMATETC* ppEnum);
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// Set up an advisory connection to this object based on the format specified
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// by pFE, flags, and the pAdvise. Set pConn to the established advise
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// connection.
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STDMETHODIMP DAdvise (LPFORMATETC pFE, DWORD flags, LPADVISESINK pAdvise,
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DWORD* pConn);
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// Turn off advising of a previous call to DAdvise which set pConn.
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STDMETHODIMP DUnadvise (DWORD pConn);
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// Set ppEnum to an IEnumSTATDATA object which will iterate over the
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// existing objects which have established advisory connections to this
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// object.
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STDMETHODIMP EnumDAdvise (LPENUMSTATDATA *ppEnum);
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public:
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// Set the adapter to dragDrop
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//void SetDragDrop(CfDragDrop& dragDrop);
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// Return the adapter
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//CfDragDrop& GetDragDrop() const;
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protected:
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BOOL FormatsMatch(const FORMATETC& source, const FORMATETC& target) const;
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ULONG m_cRef; // the reference count
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// nsDataObjCollection owns and ref counts CEnumFormatEtc
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CEnumFormatEtc * m_enumFE;
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nsTArray<nsRefPtr<nsDataObj> > mDataObjects;
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BOOL mIsAsyncMode;
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BOOL mIsInOperation;
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};
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#endif //
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