1 files changed, 92 insertions, 0 deletions
diff --git a/widget/windows/nsDataObjCollection.h b/widget/windows/nsDataObjCollection.h
new file mode 100644
index 0000000000..02ec7e8916
--- /dev/null
+++ b/widget/windows/nsDataObjCollection.h
@@ -0,0 +1,92 @@
+/* -*- 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();
+
+ private:
+  ~nsDataObjCollection() final;
+
+ public:  // IUnknown methods - see iunknown.h for documentation
+  STDMETHODIMP_(ULONG) AddRef() final;
+  STDMETHODIMP QueryInterface(REFIID, void**) final;
+  STDMETHODIMP_(ULONG) Release() final;
+
+ private:  // DataGet and DataSet helper methods
+  HRESULT GetFile(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
+  HRESULT GetText(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
+  HRESULT GetFileDescriptors(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
+  HRESULT GetFileContents(LPFORMATETC pFE, LPSTGMEDIUM pSTM);
+  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) final;
+
+ public:  // from nsPIDataObjCollection
+  void AddDataObject(IDataObject* aDataObj);
+  int32_t GetNumDataObjects() { return mDataObjects.Length(); }
+  nsDataObj* GetDataObjectAt(uint32_t aItem) {
+    return mDataObjects.SafeElementAt(aItem, RefPtr<nsDataObj>());
+  }
+
+ 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) final;
+
+  // Similar to GetData except that the caller allocates the structure
+  // referenced by pSTM.
+  STDMETHODIMP GetDataHere(LPFORMATETC pFE, LPSTGMEDIUM pSTM) final;
+
+  // Returns S_TRUE if this object supports the format specified by pSTM,
+  // S_FALSE otherwise.
+  STDMETHODIMP QueryGetData(LPFORMATETC pFE) final;
+
+  // 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) final;
+
+ private:
+  nsTArray<RefPtr<nsDataObj> > mDataObjects;
+};
+
+#endif  //