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296 lines
12 KiB
C++
296 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef _NSDATAOBJ_H_
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#define _NSDATAOBJ_H_
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#include <oleidl.h>
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#include <shldisp.h>
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsIFile.h"
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#include "nsIURI.h"
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#include "nsIInputStream.h"
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#include "nsIStreamListener.h"
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#include "nsIChannel.h"
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#include "nsCOMArray.h"
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#include "nsITimer.h"
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class nsIThread;
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class nsINode;
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// The SDK shipping with VC11 has renamed IAsyncOperation to
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// IDataObjectAsyncCapability. We try to detect this, and rename this in our
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// code too to make sure that we pick the correct name when building.
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#ifdef __IDataObjectAsyncCapability_INTERFACE_DEFINED__
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#define IAsyncOperation IDataObjectAsyncCapability
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#define IID_IAsyncOperation IID_IDataObjectAsyncCapability
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#else
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// XXX for older version of PSDK where IAsyncOperation and related stuff is not available
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// but thisdefine should be removed when parocles config is updated
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#ifndef __IAsyncOperation_INTERFACE_DEFINED__
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// IAsyncOperation interface definition
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EXTERN_C const IID IID_IAsyncOperation;
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MIDL_INTERFACE("3D8B0590-F691-11d2-8EA9-006097DF5BD4")
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IAsyncOperation : public IUnknown
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{
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virtual HRESULT STDMETHODCALLTYPE SetAsyncMode(BOOL fDoOpAsync) = 0;
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virtual HRESULT STDMETHODCALLTYPE GetAsyncMode(BOOL *pfIsOpAsync) = 0;
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virtual HRESULT STDMETHODCALLTYPE StartOperation(IBindCtx *pbcReserved) = 0;
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virtual HRESULT STDMETHODCALLTYPE InOperation(BOOL *pfInAsyncOp) = 0;
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virtual HRESULT STDMETHODCALLTYPE EndOperation(HRESULT hResult,
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IBindCtx *pbcReserved,
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DWORD dwEffects) = 0;
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};
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// this is not defined in the old headers for some reason
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#ifndef FD_PROGRESSUI
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#define FD_PROGRESSUI 0x4000
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#endif
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#endif // __IAsyncOperation_INTERFACE_DEFINED__
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#endif // __IDataObjectAsyncCapability_INTERFACE_DEFINED__
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/*
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* CFSTR_SHELLURL is deprecated and doesn't have a Unicode version.
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* Therefore we are using CFSTR_INETURL instead of CFSTR_SHELLURL.
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* See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/programmersguide/shell_basics/shell_basics_programming/transferring/clipboard.asp
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*/
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#ifndef CFSTR_INETURLA
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#define CFSTR_INETURLA L"UniformResourceLocator"
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#endif
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#ifndef CFSTR_INETURLW
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#define CFSTR_INETURLW L"UniformResourceLocatorW"
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#endif
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// For support of MinGW w32api v2.4.
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// When the next version of w32api is released with shlobj.h rev 1.35
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// http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/winsup/w32api/include/shlobj.h?cvsroot=src
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// then that can be made the base required version and this code should be removed.
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#ifndef CFSTR_FILEDESCRIPTORA
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# define CFSTR_FILEDESCRIPTORA L"FileGroupDescriptor"
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#endif
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#ifndef CFSTR_FILEDESCRIPTORW
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# define CFSTR_FILEDESCRIPTORW L"FileGroupDescriptorW"
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#endif
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class CEnumFormatEtc;
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class nsITransferable;
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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 nsDataObj : public IDataObject,
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public IAsyncOperation
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{
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protected:
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nsCOMPtr<nsIThread> mIOThread;
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public: // construction, destruction
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nsDataObj(nsIURI *uri = nullptr);
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virtual ~nsDataObj();
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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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// support for clipboard
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virtual void AddDataFlavor(const char* aDataFlavor, LPFORMATETC aFE);
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void SetTransferable(nsITransferable * aTransferable);
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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: // IDataObject methods - these are general comments. see CfDragDrop
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// for overriding behavior
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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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// IAsyncOperation methods
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STDMETHOD(EndOperation)(HRESULT hResult, IBindCtx *pbcReserved, DWORD dwEffects);
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STDMETHOD(GetAsyncMode)(BOOL *pfIsOpAsync);
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STDMETHOD(InOperation)(BOOL *pfInAsyncOp);
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STDMETHOD(SetAsyncMode)(BOOL fDoOpAsync);
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STDMETHOD(StartOperation)(IBindCtx *pbcReserved);
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public: // other methods
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// Gets the filename from the kFilePromiseURLMime flavour
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HRESULT GetDownloadDetails(nsIURI **aSourceURI,
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nsAString &aFilename);
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protected:
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// help determine the kind of drag
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bool IsFlavourPresent(const char *inFlavour);
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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 ( FORMATETC& aFE, STGMEDIUM& aSTG );
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virtual HRESULT GetText ( const nsACString& aDF, FORMATETC& aFE, STGMEDIUM & aSTG );
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virtual HRESULT GetDib ( const nsACString& inFlavor, FORMATETC &, STGMEDIUM & aSTG );
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virtual HRESULT GetMetafilePict(FORMATETC& FE, STGMEDIUM& STM);
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virtual HRESULT DropImage( FORMATETC& aFE, STGMEDIUM& aSTG );
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virtual HRESULT DropFile( FORMATETC& aFE, STGMEDIUM& aSTG );
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virtual HRESULT DropTempFile( FORMATETC& aFE, STGMEDIUM& aSTG );
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virtual HRESULT GetUniformResourceLocator ( FORMATETC& aFE, STGMEDIUM& aSTG, bool aIsUnicode ) ;
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virtual HRESULT ExtractUniformResourceLocatorA ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
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virtual HRESULT ExtractUniformResourceLocatorW ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
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virtual HRESULT GetFileDescriptor ( FORMATETC& aFE, STGMEDIUM& aSTG, bool aIsUnicode ) ;
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virtual HRESULT GetFileContents ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
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virtual HRESULT GetPreferredDropEffect ( FORMATETC& aFE, STGMEDIUM& aSTG );
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virtual HRESULT SetBitmap(FORMATETC& FE, STGMEDIUM& STM);
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virtual HRESULT SetDib (FORMATETC& FE, STGMEDIUM& STM);
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virtual HRESULT SetText (FORMATETC& FE, STGMEDIUM& STM);
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virtual HRESULT SetMetafilePict(FORMATETC& FE, STGMEDIUM& STM);
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// Provide the structures needed for an internet shortcut by the shell
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virtual HRESULT GetFileDescriptorInternetShortcutA ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
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virtual HRESULT GetFileDescriptorInternetShortcutW ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
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virtual HRESULT GetFileContentsInternetShortcut ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
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// IStream implementation
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virtual HRESULT GetFileDescriptor_IStreamA ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
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virtual HRESULT GetFileDescriptor_IStreamW ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
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virtual HRESULT GetFileContents_IStream ( FORMATETC& aFE, STGMEDIUM& aSTG ) ;
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nsresult ExtractShortcutURL ( nsString & outURL ) ;
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nsresult ExtractShortcutTitle ( nsString & outTitle ) ;
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// munge our HTML data to win32's CF_HTML spec. Will null terminate
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nsresult BuildPlatformHTML ( const char* inOurHTML, char** outPlatformHTML ) ;
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// Used for the SourceURL part of CF_HTML
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nsCString mSourceURL;
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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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nsTArray<nsCString> mDataFlavors;
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nsITransferable * mTransferable; // nsDataObj owns and ref counts nsITransferable,
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// the nsITransferable does know anything about the nsDataObj
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CEnumFormatEtc * m_enumFE; // Ownership Rules:
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// nsDataObj owns and ref counts CEnumFormatEtc,
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nsCOMPtr<nsIFile> mCachedTempFile;
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BOOL mIsAsyncMode;
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BOOL mIsInOperation;
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///////////////////////////////////////////////////////////////////////////////
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// CStream class implementation
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// this class is used in Drag and drop with download sample
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// called from IDataObject::GetData
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class CStream : public IStream, public nsIStreamListener
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{
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nsCOMPtr<nsIChannel> mChannel;
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nsTArray<uint8_t> mChannelData;
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bool mChannelRead;
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nsresult mChannelResult;
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uint32_t mStreamRead;
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protected:
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virtual ~CStream();
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nsresult WaitForCompletion();
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public:
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CStream();
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nsresult Init(nsIURI *pSourceURI, nsINode* aRequestingNode);
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NS_DECL_ISUPPORTS
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NS_DECL_NSIREQUESTOBSERVER
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NS_DECL_NSISTREAMLISTENER
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// IUnknown
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STDMETHOD(QueryInterface)(REFIID refiid, void** ppvResult);
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// IStream
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STDMETHOD(Clone)(IStream** ppStream);
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STDMETHOD(Commit)(DWORD dwFrags);
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STDMETHOD(CopyTo)(IStream* pDestStream, ULARGE_INTEGER nBytesToCopy, ULARGE_INTEGER* nBytesRead, ULARGE_INTEGER* nBytesWritten);
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STDMETHOD(LockRegion)(ULARGE_INTEGER nStart, ULARGE_INTEGER nBytes, DWORD dwFlags);
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STDMETHOD(Read)(void* pvBuffer, ULONG nBytesToRead, ULONG* nBytesRead);
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STDMETHOD(Revert)(void);
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STDMETHOD(Seek)(LARGE_INTEGER nMove, DWORD dwOrigin, ULARGE_INTEGER* nNewPos);
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STDMETHOD(SetSize)(ULARGE_INTEGER nNewSize);
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STDMETHOD(Stat)(STATSTG* statstg, DWORD dwFlags);
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STDMETHOD(UnlockRegion)(ULARGE_INTEGER nStart, ULARGE_INTEGER nBytes, DWORD dwFlags);
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STDMETHOD(Write)(const void* pvBuffer, ULONG nBytesToRead, ULONG* nBytesRead);
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};
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HRESULT CreateStream(IStream **outStream);
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private:
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// Drag and drop helper data for implementing drag and drop image support
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typedef struct {
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FORMATETC fe;
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STGMEDIUM stgm;
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} DATAENTRY, *LPDATAENTRY;
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nsTArray <LPDATAENTRY> mDataEntryList;
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nsCOMPtr<nsITimer> mTimer;
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bool LookupArbitraryFormat(FORMATETC *aFormat, LPDATAENTRY *aDataEntry, BOOL aAddorUpdate);
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bool CopyMediumData(STGMEDIUM *aMediumDst, STGMEDIUM *aMediumSrc, LPFORMATETC aFormat, BOOL aSetData);
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static void RemoveTempFile(nsITimer* aTimer, void* aClosure);
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};
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#endif // _NSDATAOBJ_H_
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