forked from mirrors/gecko-dev
1c8569bf0b
* Removed dead code. * Removed a duplicated field (`m_cRef`) from the derived class. * Removed #ifdefs for older SDKs that we no longer support. * Made access specifiers more restrictive. * Added `override` and `final`. * De-virtualized member functions unless it is neccessary. Differential Revision: https://phabricator.services.mozilla.com/D21864 --HG-- extra : moz-landing-system : lando
92 lines
3.2 KiB
C++
92 lines
3.2 KiB
C++
/* -*- 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 //
|