DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 * Kyle Huey <me@kylehuey.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef _NSDATAOBJCOLLECTION_H_
#define _NSDATAOBJCOLLECTION_H_

#include <oleidl.h>

#include "nsString.h"
#include "nsTArray.h"
#include "nsAutoPtr.h"
#include "nsDataObj.h"

class CEnumFormatEtc;

#define MULTI_MIME "Mozilla/IDataObjectCollectionFormat"

EXTERN_C const IID IID_IDataObjCollection;

// An interface to make sure we have the right kind of object for D&D
// this way we can filter out collection objects that aren't ours
class nsIDataObjCollection : public IUnknown {
public:
  
};

/*
 * This ole registered class is used to facilitate drag-drop of objects which
 * can be adapted by an object derived from CfDragDrop. The CfDragDrop is
 * associated with instances via SetDragDrop().
 */
 
class nsDataObjCollection : public nsIDataObjCollection, public nsDataObj
{
  public:
    nsDataObjCollection();
    ~nsDataObjCollection();

  public: // IUnknown methods - see iunknown.h for documentation
    STDMETHODIMP_(ULONG) AddRef        ();
    STDMETHODIMP       QueryInterface(REFIID, void**);
    STDMETHODIMP_(ULONG) Release       ();

  public: // DataGet and DataSet helper methods
    virtual HRESULT AddSetFormat(FORMATETC&  FE);
    virtual HRESULT AddGetFormat(FORMATETC&  FE);

    virtual HRESULT GetFile(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
    virtual HRESULT GetText(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
    virtual HRESULT GetFileDescriptors(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
    virtual HRESULT GetFileContents(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
    virtual HRESULT GetFirstSupporting(LPFORMATETC pFE, LPSTGMEDIUM pSTM);

    // support for clipboard
    void AddDataFlavor(const char * aDataFlavor, LPFORMATETC aFE);

    // from nsPIDataObjCollection
    void AddDataObject(IDataObject * aDataObj);
    PRInt32 GetNumDataObjects() { return mDataObjects.Length(); }
    nsDataObj* GetDataObjectAt(PRUint32 aItem)
            { return mDataObjects.SafeElementAt(aItem, nsRefPtr<nsDataObj>()); }

    // Return the registered OLE class ID of this object's CfDataObj.
    CLSID GetClassID() const;

  public:
    // Store data in pSTM according to the format specified by pFE, if the
    // format is supported (supported formats are specified in CfDragDrop::
    // GetFormats) and return NOERROR; otherwise return DATA_E_FORMATETC. It
    // is the callers responsibility to free pSTM if NOERROR is returned.
    STDMETHODIMP GetData  (LPFORMATETC pFE, LPSTGMEDIUM pSTM);

    // Similar to GetData except that the caller allocates the structure
    // referenced by pSTM.
    STDMETHODIMP GetDataHere (LPFORMATETC pFE, LPSTGMEDIUM pSTM);

    // Returns S_TRUE if this object supports the format specified by pSTM,
    // S_FALSE otherwise.
    STDMETHODIMP QueryGetData (LPFORMATETC pFE);

    // Set pCanonFE to the canonical format of pFE if one exists and return
    // NOERROR, otherwise return DATA_S_SAMEFORMATETC. A canonical format
    // implies an identical rendering.
    STDMETHODIMP GetCanonicalFormatEtc (LPFORMATETC pFE, LPFORMATETC pCanonFE);

    // Set this objects data according to the format specified by pFE and
    // the storage medium specified by pSTM and return NOERROR, if the format
    // is supported. If release is TRUE this object must release the storage
    // associated with pSTM.
    STDMETHODIMP SetData  (LPFORMATETC pFE, LPSTGMEDIUM pSTM, BOOL release);

    // Set ppEnum to an IEnumFORMATETC object which will iterate all of the
    // data formats that this object supports. direction is either DATADIR_GET
    // or DATADIR_SET.
    STDMETHODIMP EnumFormatEtc  (DWORD direction, LPENUMFORMATETC* ppEnum);

    // Set up an advisory connection to this object based on the format specified
    // by pFE, flags, and the pAdvise. Set pConn to the established advise
    // connection.
    STDMETHODIMP DAdvise  (LPFORMATETC pFE, DWORD flags, LPADVISESINK pAdvise,
                   DWORD* pConn);

    // Turn off advising of a previous call to DAdvise which set pConn.
    STDMETHODIMP DUnadvise (DWORD pConn);

    // Set ppEnum to an IEnumSTATDATA object which will iterate over the
    // existing objects which have established advisory connections to this
      // object.
    STDMETHODIMP EnumDAdvise (LPENUMSTATDATA *ppEnum);

  public:
    // Set the adapter to dragDrop 
    //void SetDragDrop(CfDragDrop& dragDrop);

    // Return the adapter
    //CfDragDrop& GetDragDrop() const;

  protected:
    BOOL FormatsMatch(const FORMATETC& source, const FORMATETC& target) const;

    ULONG m_cRef;              // the reference count

    // nsDataObjCollection owns and ref counts CEnumFormatEtc
    CEnumFormatEtc   * m_enumFE;

    nsTArray<nsRefPtr<nsDataObj> > mDataObjects;
    
    BOOL mIsAsyncMode;
    BOOL mIsInOperation;
};

#endif  //