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-rw-r--r--widget/windows/nsDataObjCollection.h95
1 files changed, 95 insertions, 0 deletions
diff --git a/widget/windows/nsDataObjCollection.h b/widget/windows/nsDataObjCollection.h
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+++ b/widget/windows/nsDataObjCollection.h
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+/* -*- 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 <oleidl.h>
+
+#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<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 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<RefPtr<nsDataObj> > mDataObjects;
+};
+
+#endif //