From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- widget/windows/nsDataObjCollection.h | 95 ++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 widget/windows/nsDataObjCollection.h (limited to 'widget/windows/nsDataObjCollection.h') diff --git a/widget/windows/nsDataObjCollection.h b/widget/windows/nsDataObjCollection.h new file mode 100644 index 000000000..06bd36a7d --- /dev/null +++ b/widget/windows/nsDataObjCollection.h @@ -0,0 +1,95 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef _NSDATAOBJCOLLECTION_H_ +#define _NSDATAOBJCOLLECTION_H_ + +#include + +#include "mozilla/RefPtr.h" +#include "nsString.h" +#include "nsTArray.h" +#include "nsDataObj.h" +#include "mozilla/Attributes.h" + +#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 final : 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 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); + + using nsDataObj::GetFile; + using nsDataObj::GetFileContents; + using nsDataObj::GetText; + + // support for clipboard + void AddDataFlavor(const char * aDataFlavor, LPFORMATETC aFE); + + // from nsPIDataObjCollection + void AddDataObject(IDataObject * aDataObj); + int32_t GetNumDataObjects() { return mDataObjects.Length(); } + nsDataObj* GetDataObjectAt(uint32_t aItem) + { return mDataObjects.SafeElementAt(aItem, RefPtr()); } + + // 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 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); + + protected: + ULONG m_cRef; // the reference count + + nsTArray > mDataObjects; +}; + +#endif // -- cgit v1.2.3