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widget/windows/nsDataObj.h@b8a032363ba2 (annotated)

widget/windows/nsDataObj.h

Thu, 22 Jan 2015 13:21:57 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 22 Jan 2015 13:21:57 +0100
branch
TOR_BUG_9701
changeset 15
b8a032363ba2
permissions
-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0 2 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #ifndef _NSDATAOBJ_H_
michael@0 7 #define _NSDATAOBJ_H_
michael@0 8
michael@0 9 #include <oleidl.h>
michael@0 10 #include <shldisp.h>
michael@0 11
michael@0 12 #include "nsCOMPtr.h"
michael@0 13 #include "nsString.h"
michael@0 14 #include "nsIFile.h"
michael@0 15 #include "nsIURI.h"
michael@0 16 #include "nsIInputStream.h"
michael@0 17 #include "nsIStreamListener.h"
michael@0 18 #include "nsIChannel.h"
michael@0 19 #include "nsCOMArray.h"
michael@0 20 #include "nsITimer.h"
michael@0 21
michael@0 22 class nsIThread;
michael@0 23
michael@0 24 // The SDK shipping with VC11 has renamed IAsyncOperation to
michael@0 25 // IDataObjectAsyncCapability. We try to detect this, and rename this in our
michael@0 26 // code too to make sure that we pick the correct name when building.
michael@0 27 #ifdef __IDataObjectAsyncCapability_INTERFACE_DEFINED__
michael@0 28 #define IAsyncOperation IDataObjectAsyncCapability
michael@0 29 #define IID_IAsyncOperation IID_IDataObjectAsyncCapability
michael@0 30 #else
michael@0 31 // XXX for older version of PSDK where IAsyncOperation and related stuff is not available
michael@0 32 // but thisdefine should be removed when parocles config is updated
michael@0 33 #ifndef __IAsyncOperation_INTERFACE_DEFINED__
michael@0 34 // IAsyncOperation interface definition
michael@0 35 EXTERN_C const IID IID_IAsyncOperation;
michael@0 36
michael@0 37 MIDL_INTERFACE("3D8B0590-F691-11d2-8EA9-006097DF5BD4")
michael@0 38 IAsyncOperation : public IUnknown
michael@0 39 {
michael@0 40 virtual HRESULT STDMETHODCALLTYPE SetAsyncMode(BOOL fDoOpAsync) = 0;
michael@0 41 virtual HRESULT STDMETHODCALLTYPE GetAsyncMode(BOOL *pfIsOpAsync) = 0;
michael@0 42 virtual HRESULT STDMETHODCALLTYPE StartOperation(IBindCtx *pbcReserved) = 0;
michael@0 43 virtual HRESULT STDMETHODCALLTYPE InOperation(BOOL *pfInAsyncOp) = 0;
michael@0 44 virtual HRESULT STDMETHODCALLTYPE EndOperation(HRESULT hResult,
michael@0 45 IBindCtx *pbcReserved,
michael@0 46 DWORD dwEffects) = 0;
michael@0 47 };
michael@0 48 // this is not defined in the old headers for some reason
michael@0 49 #ifndef FD_PROGRESSUI
michael@0 50 #define FD_PROGRESSUI 0x4000
michael@0 51 #endif
michael@0 52
michael@0 53 #endif // __IAsyncOperation_INTERFACE_DEFINED__
michael@0 54 #endif // __IDataObjectAsyncCapability_INTERFACE_DEFINED__
michael@0 55
michael@0 56 /*
michael@0 57 * CFSTR_SHELLURL is deprecated and doesn't have a Unicode version.
michael@0 58 * Therefore we are using CFSTR_INETURL instead of CFSTR_SHELLURL.
michael@0 59 * See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/programmersguide/shell_basics/shell_basics_programming/transferring/clipboard.asp
michael@0 60 */
michael@0 61 #ifndef CFSTR_INETURLA
michael@0 62 #define CFSTR_INETURLA L"UniformResourceLocator"
michael@0 63 #endif
michael@0 64 #ifndef CFSTR_INETURLW
michael@0 65 #define CFSTR_INETURLW L"UniformResourceLocatorW"
michael@0 66 #endif
michael@0 67
michael@0 68 // For support of MinGW w32api v2.4.
michael@0 69 // When the next version of w32api is released with shlobj.h rev 1.35
michael@0 70 // http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/winsup/w32api/include/shlobj.h?cvsroot=src
michael@0 71 // then that can be made the base required version and this code should be removed.
michael@0 72 #ifndef CFSTR_FILEDESCRIPTORA
michael@0 73 # define CFSTR_FILEDESCRIPTORA L"FileGroupDescriptor"
michael@0 74 #endif
michael@0 75 #ifndef CFSTR_FILEDESCRIPTORW
michael@0 76 # define CFSTR_FILEDESCRIPTORW L"FileGroupDescriptorW"
michael@0 77 #endif
michael@0 78
michael@0 79 class CEnumFormatEtc;
michael@0 80 class nsITransferable;
michael@0 81
michael@0 82 /*
michael@0 83 * This ole registered class is used to facilitate drag-drop of objects which
michael@0 84 * can be adapted by an object derived from CfDragDrop. The CfDragDrop is
michael@0 85 * associated with instances via SetDragDrop().
michael@0 86 */
michael@0 87 class nsDataObj : public IDataObject,
michael@0 88 public IAsyncOperation
michael@0 89 {
michael@0 90
michael@0 91 protected:
michael@0 92 nsCOMPtr<nsIThread> mIOThread;
michael@0 93
michael@0 94 public: // construction, destruction
michael@0 95 nsDataObj(nsIURI *uri = nullptr);
michael@0 96 virtual ~nsDataObj();
michael@0 97
michael@0 98 public: // IUnknown methods - see iunknown.h for documentation
michael@0 99 STDMETHODIMP_(ULONG) AddRef ();
michael@0 100 STDMETHODIMP QueryInterface(REFIID, void**);
michael@0 101 STDMETHODIMP_(ULONG) Release ();
michael@0 102
michael@0 103 // support for clipboard
michael@0 104 void AddDataFlavor(const char* aDataFlavor, LPFORMATETC aFE);
michael@0 105 void SetTransferable(nsITransferable * aTransferable);
michael@0 106
michael@0 107 // Return the registered OLE class ID of this object's CfDataObj.
michael@0 108 CLSID GetClassID() const;
michael@0 109
michael@0 110 public: // IDataObject methods - these are general comments. see CfDragDrop
michael@0 111 // for overriding behavior
michael@0 112
michael@0 113 // Store data in pSTM according to the format specified by pFE, if the
michael@0 114 // format is supported (supported formats are specified in CfDragDrop::
michael@0 115 // GetFormats) and return NOERROR; otherwise return DATA_E_FORMATETC. It
michael@0 116 // is the callers responsibility to free pSTM if NOERROR is returned.
michael@0 117 STDMETHODIMP GetData (LPFORMATETC pFE, LPSTGMEDIUM pSTM);
michael@0 118
michael@0 119 // Similar to GetData except that the caller allocates the structure
michael@0 120 // referenced by pSTM.
michael@0 121 STDMETHODIMP GetDataHere (LPFORMATETC pFE, LPSTGMEDIUM pSTM);
michael@0 122
michael@0 123 // Returns S_TRUE if this object supports the format specified by pSTM,
michael@0 124 // S_FALSE otherwise.
michael@0 125 STDMETHODIMP QueryGetData (LPFORMATETC pFE);
michael@0 126
michael@0 127 // Set pCanonFE to the canonical format of pFE if one exists and return
michael@0 128 // NOERROR, otherwise return DATA_S_SAMEFORMATETC. A canonical format
michael@0 129 // implies an identical rendering.
michael@0 130 STDMETHODIMP GetCanonicalFormatEtc (LPFORMATETC pFE, LPFORMATETC pCanonFE);
michael@0 131
michael@0 132 // Set this objects data according to the format specified by pFE and
michael@0 133 // the storage medium specified by pSTM and return NOERROR, if the format
michael@0 134 // is supported. If release is TRUE this object must release the storage
michael@0 135 // associated with pSTM.
michael@0 136 STDMETHODIMP SetData (LPFORMATETC pFE, LPSTGMEDIUM pSTM, BOOL release);
michael@0 137
michael@0 138 // Set ppEnum to an IEnumFORMATETC object which will iterate all of the
michael@0 139 // data formats that this object supports. direction is either DATADIR_GET
michael@0 140 // or DATADIR_SET.
michael@0 141 STDMETHODIMP EnumFormatEtc (DWORD direction, LPENUMFORMATETC* ppEnum);
michael@0 142
michael@0 143 // Set up an advisory connection to this object based on the format specified
michael@0 144 // by pFE, flags, and the pAdvise. Set pConn to the established advise
michael@0 145 // connection.
michael@0 146 STDMETHODIMP DAdvise (LPFORMATETC pFE, DWORD flags, LPADVISESINK pAdvise,
michael@0 147 DWORD* pConn);
michael@0 148
michael@0 149 // Turn off advising of a previous call to DAdvise which set pConn.
michael@0 150 STDMETHODIMP DUnadvise (DWORD pConn);
michael@0 151
michael@0 152 // Set ppEnum to an IEnumSTATDATA object which will iterate over the
michael@0 153 // existing objects which have established advisory connections to this
michael@0 154 // object.
michael@0 155 STDMETHODIMP EnumDAdvise (LPENUMSTATDATA *ppEnum);
michael@0 156
michael@0 157 // IAsyncOperation methods
michael@0 158 STDMETHOD(EndOperation)(HRESULT hResult, IBindCtx *pbcReserved, DWORD dwEffects);
michael@0 159 STDMETHOD(GetAsyncMode)(BOOL *pfIsOpAsync);
michael@0 160 STDMETHOD(InOperation)(BOOL *pfInAsyncOp);
michael@0 161 STDMETHOD(SetAsyncMode)(BOOL fDoOpAsync);
michael@0 162 STDMETHOD(StartOperation)(IBindCtx *pbcReserved);
michael@0 163
michael@0 164 public: // other methods
michael@0 165
michael@0 166 // Gets the filename from the kFilePromiseURLMime flavour
michael@0 167 HRESULT GetDownloadDetails(nsIURI **aSourceURI,
michael@0 168 nsAString &aFilename);
michael@0 169
michael@0 170 protected:
michael@0 171 // help determine the kind of drag
michael@0 172 bool IsFlavourPresent(const char *inFlavour);
michael@0 173
michael@0 174 virtual HRESULT AddSetFormat(FORMATETC& FE);
michael@0 175 virtual HRESULT AddGetFormat(FORMATETC& FE);
michael@0 176
michael@0 177 virtual HRESULT GetFile ( FORMATETC& aFE, STGMEDIUM& aSTG );
michael@0 178 virtual HRESULT GetText ( const nsACString& aDF, FORMATETC& aFE, STGMEDIUM & aSTG );
michael@0 179 virtual HRESULT GetDib ( const nsACString& inFlavor, FORMATETC &, STGMEDIUM & aSTG );
michael@0 180 virtual HRESULT GetMetafilePict(FORMATETC& FE, STGMEDIUM& STM);
michael@0 181
michael@0 182 virtual HRESULT DropImage( FORMATETC& aFE, STGMEDIUM& aSTG );
michael@0 183 virtual HRESULT DropFile( FORMATETC& aFE, STGMEDIUM& aSTG );
michael@0 184 virtual HRESULT DropTempFile( FORMATETC& aFE, STGMEDIUM& aSTG );
michael@0 185
michael@0 186 virtual HRESULT GetUniformResourceLocator ( FORMATETC& aFE, STGMEDIUM& aSTG, bool aIsUnicode ) ;
michael@0 187 virtual HRESULT ExtractUniformResourceLocatorA ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
michael@0 188 virtual HRESULT ExtractUniformResourceLocatorW ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
michael@0 189 virtual HRESULT GetFileDescriptor ( FORMATETC& aFE, STGMEDIUM& aSTG, bool aIsUnicode ) ;
michael@0 190 virtual HRESULT GetFileContents ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
michael@0 191 virtual HRESULT GetPreferredDropEffect ( FORMATETC& aFE, STGMEDIUM& aSTG );
michael@0 192
michael@0 193 virtual HRESULT SetBitmap(FORMATETC& FE, STGMEDIUM& STM);
michael@0 194 virtual HRESULT SetDib (FORMATETC& FE, STGMEDIUM& STM);
michael@0 195 virtual HRESULT SetText (FORMATETC& FE, STGMEDIUM& STM);
michael@0 196 virtual HRESULT SetMetafilePict(FORMATETC& FE, STGMEDIUM& STM);
michael@0 197
michael@0 198 // Provide the structures needed for an internet shortcut by the shell
michael@0 199 virtual HRESULT GetFileDescriptorInternetShortcutA ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
michael@0 200 virtual HRESULT GetFileDescriptorInternetShortcutW ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
michael@0 201 virtual HRESULT GetFileContentsInternetShortcut ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
michael@0 202
michael@0 203 // IStream implementation
michael@0 204 virtual HRESULT GetFileDescriptor_IStreamA ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
michael@0 205 virtual HRESULT GetFileDescriptor_IStreamW ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
michael@0 206 virtual HRESULT GetFileContents_IStream ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
michael@0 207
michael@0 208 nsresult ExtractShortcutURL ( nsString & outURL ) ;
michael@0 209 nsresult ExtractShortcutTitle ( nsString & outTitle ) ;
michael@0 210
michael@0 211 // munge our HTML data to win32's CF_HTML spec. Will null terminate
michael@0 212 nsresult BuildPlatformHTML ( const char* inOurHTML, char** outPlatformHTML ) ;
michael@0 213
michael@0 214 // Used for the SourceURL part of CF_HTML
michael@0 215 nsCString mSourceURL;
michael@0 216
michael@0 217 BOOL FormatsMatch(const FORMATETC& source, const FORMATETC& target) const;
michael@0 218
michael@0 219 ULONG m_cRef; // the reference count
michael@0 220
michael@0 221 nsTArray<nsCString> mDataFlavors;
michael@0 222
michael@0 223 nsITransferable * mTransferable; // nsDataObj owns and ref counts nsITransferable,
michael@0 224 // the nsITransferable does know anything about the nsDataObj
michael@0 225
michael@0 226 CEnumFormatEtc * m_enumFE; // Ownership Rules:
michael@0 227 // nsDataObj owns and ref counts CEnumFormatEtc,
michael@0 228
michael@0 229 nsCOMPtr<nsIFile> mCachedTempFile;
michael@0 230
michael@0 231 BOOL mIsAsyncMode;
michael@0 232 BOOL mIsInOperation;
michael@0 233 ///////////////////////////////////////////////////////////////////////////////
michael@0 234 // CStream class implementation
michael@0 235 // this class is used in Drag and drop with download sample
michael@0 236 // called from IDataObject::GetData
michael@0 237 class CStream : public IStream, public nsIStreamListener
michael@0 238 {
michael@0 239 nsCOMPtr<nsIChannel> mChannel;
michael@0 240 nsTArray<uint8_t> mChannelData;
michael@0 241 bool mChannelRead;
michael@0 242 nsresult mChannelResult;
michael@0 243 uint32_t mStreamRead;
michael@0 244
michael@0 245 protected:
michael@0 246 virtual ~CStream();
michael@0 247 nsresult WaitForCompletion();
michael@0 248
michael@0 249 public:
michael@0 250 CStream();
michael@0 251 nsresult Init(nsIURI *pSourceURI);
michael@0 252
michael@0 253 NS_DECL_ISUPPORTS
michael@0 254 NS_DECL_NSIREQUESTOBSERVER
michael@0 255 NS_DECL_NSISTREAMLISTENER
michael@0 256
michael@0 257 // IUnknown
michael@0 258 STDMETHOD(QueryInterface)(REFIID refiid, void** ppvResult);
michael@0 259
michael@0 260 // IStream
michael@0 261 STDMETHOD(Clone)(IStream** ppStream);
michael@0 262 STDMETHOD(Commit)(DWORD dwFrags);
michael@0 263 STDMETHOD(CopyTo)(IStream* pDestStream, ULARGE_INTEGER nBytesToCopy, ULARGE_INTEGER* nBytesRead, ULARGE_INTEGER* nBytesWritten);
michael@0 264 STDMETHOD(LockRegion)(ULARGE_INTEGER nStart, ULARGE_INTEGER nBytes, DWORD dwFlags);
michael@0 265 STDMETHOD(Read)(void* pvBuffer, ULONG nBytesToRead, ULONG* nBytesRead);
michael@0 266 STDMETHOD(Revert)(void);
michael@0 267 STDMETHOD(Seek)(LARGE_INTEGER nMove, DWORD dwOrigin, ULARGE_INTEGER* nNewPos);
michael@0 268 STDMETHOD(SetSize)(ULARGE_INTEGER nNewSize);
michael@0 269 STDMETHOD(Stat)(STATSTG* statstg, DWORD dwFlags);
michael@0 270 STDMETHOD(UnlockRegion)(ULARGE_INTEGER nStart, ULARGE_INTEGER nBytes, DWORD dwFlags);
michael@0 271 STDMETHOD(Write)(const void* pvBuffer, ULONG nBytesToRead, ULONG* nBytesRead);
michael@0 272 };
michael@0 273
michael@0 274 HRESULT CreateStream(IStream **outStream);
michael@0 275
michael@0 276 private:
michael@0 277
michael@0 278 // Drag and drop helper data for implementing drag and drop image support
michael@0 279 typedef struct {
michael@0 280 FORMATETC fe;
michael@0 281 STGMEDIUM stgm;
michael@0 282 } DATAENTRY, *LPDATAENTRY;
michael@0 283
michael@0 284 nsTArray <LPDATAENTRY> mDataEntryList;
michael@0 285 nsCOMPtr<nsITimer> mTimer;
michael@0 286
michael@0 287 bool LookupArbitraryFormat(FORMATETC *aFormat, LPDATAENTRY *aDataEntry, BOOL aAddorUpdate);
michael@0 288 bool CopyMediumData(STGMEDIUM *aMediumDst, STGMEDIUM *aMediumSrc, LPFORMATETC aFormat, BOOL aSetData);
michael@0 289 static void RemoveTempFile(nsITimer* aTimer, void* aClosure);
michael@0 290 };
michael@0 291
michael@0 292
michael@0 293 #endif // _NSDATAOBJ_H_
michael@0 294

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