163 lines
3.8 KiB
C++
163 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL") you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "stdafx.h"
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#include "DropTarget.h"
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#ifndef CFSTR_SHELLURL
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#define CFSTR_SHELLURL _T("UniformResourceLocator")
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#endif
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static const UINT g_cfURL = RegisterClipboardFormat(CFSTR_SHELLURL);
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CDropTarget::CDropTarget()
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{
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m_pOwner = NULL;
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}
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CDropTarget::~CDropTarget()
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{
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}
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void CDropTarget::SetOwner(CMozillaBrowser *pOwner)
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{
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m_pOwner = pOwner;
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}
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///////////////////////////////////////////////////////////////////////////////
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// IDropTarget implementation
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HRESULT STDMETHODCALLTYPE CDropTarget::DragEnter(/* [unique][in] */ IDataObject __RPC_FAR *pDataObj, /* [in] */ DWORD grfKeyState, /* [in] */ POINTL pt, /* [out][in] */ DWORD __RPC_FAR *pdwEffect)
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{
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if (pdwEffect == NULL || pDataObj == NULL)
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{
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NG_ASSERT(0);
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return E_INVALIDARG;
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}
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if (m_spDataObject != NULL)
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{
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NG_ASSERT(0);
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return E_UNEXPECTED;
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}
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// TODO process Internet Shortcuts (*.URL) files
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// Test if the data object supports types we can handle
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BOOL bSupported = FALSE;
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FORMATETC formatetc;
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memset(&formatetc, 0, sizeof(formatetc));
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formatetc.dwAspect = DVASPECT_CONTENT;
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formatetc.lindex = -1;
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formatetc.tymed = TYMED_HGLOBAL;
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formatetc.cfFormat = g_cfURL;
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if (pDataObj->QueryGetData(&formatetc) == S_OK)
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{
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bSupported = TRUE;
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}
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if (bSupported)
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{
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m_spDataObject = pDataObj;
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*pdwEffect = DROPEFFECT_LINK;
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}
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else
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{
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*pdwEffect = DROPEFFECT_NONE;
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}
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CDropTarget::DragOver(/* [in] */ DWORD grfKeyState, /* [in] */ POINTL pt, /* [out][in] */ DWORD __RPC_FAR *pdwEffect)
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{
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if (pdwEffect == NULL)
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{
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NG_ASSERT(0);
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return E_INVALIDARG;
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}
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*pdwEffect = m_spDataObject ? DROPEFFECT_LINK : DROPEFFECT_NONE;
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CDropTarget::DragLeave(void)
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{
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if (m_spDataObject)
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{
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m_spDataObject.Release();
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}
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CDropTarget::Drop(/* [unique][in] */ IDataObject __RPC_FAR *pDataObj, /* [in] */ DWORD grfKeyState, /* [in] */ POINTL pt, /* [out][in] */ DWORD __RPC_FAR *pdwEffect)
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{
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if (pdwEffect == NULL)
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{
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NG_ASSERT(0);
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return E_INVALIDARG;
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}
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if (m_spDataObject == NULL)
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{
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*pdwEffect = DROPEFFECT_NONE;
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return S_OK;
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}
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*pdwEffect = DROPEFFECT_LINK;
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// TODO process Internet Shortcuts (*.URL) files
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// Get the URL from the data object
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FORMATETC formatetc;
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STGMEDIUM stgmedium;
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memset(&formatetc, 0, sizeof(formatetc));
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memset(&stgmedium, 0, sizeof(formatetc));
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formatetc.dwAspect = DVASPECT_CONTENT;
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formatetc.lindex = -1;
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formatetc.tymed = TYMED_HGLOBAL;
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formatetc.cfFormat = g_cfURL;
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if (m_spDataObject->GetData(&formatetc, &stgmedium) == S_OK)
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{
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NG_ASSERT(stgmedium.tymed == TYMED_HGLOBAL);
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NG_ASSERT(stgmedium.hGlobal);
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char *pszURL = (char *) GlobalLock(stgmedium.hGlobal);
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NG_TRACE("URL \"%s\" dragged over control\n", pszURL);
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// Browse to the URL
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if (m_pOwner)
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{
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USES_CONVERSION;
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BSTR bstrURL = SysAllocString(A2OLE(pszURL));
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m_pOwner->Navigate(bstrURL, NULL, NULL, NULL, NULL);
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SysFreeString(bstrURL);
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}
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GlobalUnlock(stgmedium.hGlobal);
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ReleaseStgMedium(&stgmedium);
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}
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m_spDataObject.Release();
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return S_OK;
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}
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