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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <o3tl/any.hxx>
+
+#include <stdio.h>
+#include <win/dnd_target.hxx>
+#include "idroptarget.hxx"
+#include "globals.hxx"
+#include "targetdropcontext.hxx"
+#include "targetdragcontext.hxx"
+#include <rtl/ustring.h>
+#include <osl/thread.h>
+#include <sal/log.hxx>
+#include <comphelper/windowserrorstring.hxx>
+
+#include "DOTransferable.hxx"
+
+using namespace cppu;
+using namespace osl;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::datatransfer::dnd;
+using namespace com::sun::star::datatransfer::dnd::DNDConstants;
+
+#define WM_REGISTERDRAGDROP WM_USER + 1
+#define WM_REVOKEDRAGDROP WM_USER + 2
+
+DWORD WINAPI DndTargetOleSTAFunc(LPVOID pParams);
+
+DropTarget::DropTarget( const Reference<XComponentContext>& rxContext):
+ WeakComponentImplHelper<XInitialization,XDropTarget, XServiceInfo>(m_aMutex),
+ m_hWnd( nullptr),
+ m_threadIdWindow(0),
+ m_threadIdTarget(0),
+ m_hOleThread(nullptr),
+ m_oleThreadId( 0),
+ m_pDropTarget( nullptr),
+ m_xContext( rxContext ),
+ m_bActive(true),
+ m_nDefaultActions(ACTION_COPY|ACTION_MOVE|ACTION_LINK|ACTION_DEFAULT),
+ m_nCurrentDropAction( ACTION_NONE),
+ m_nLastDropAction(0),
+ m_bDropComplete(false)
+{
+}
+
+DropTarget::~DropTarget()
+{
+}
+// called from WeakComponentImplHelperX::dispose
+// WeakComponentImplHelper calls disposing before it destroys
+// itself.
+// NOTE: RevokeDragDrop decrements the ref count on the IDropTarget
+// interface. (m_pDropTarget)
+// If the HWND is invalid then it doesn't decrement and
+// the IDropTarget object will live on. MEMORY LEAK
+void SAL_CALL DropTarget::disposing()
+{
+ if( m_threadIdTarget)
+ {
+ // Call RevokeDragDrop and wait for the OLE thread to die;
+ PostThreadMessageW( m_threadIdTarget, WM_REVOKEDRAGDROP, reinterpret_cast<WPARAM>(this), 0);
+ WaitForSingleObject( m_hOleThread, INFINITE);
+ CloseHandle( m_hOleThread);
+ //OSL_ENSURE( SUCCEEDED( hr), "HWND not valid!" );
+ }
+ else
+ {
+ RevokeDragDrop( m_hWnd);
+ m_hWnd= nullptr;
+ }
+ if( m_pDropTarget)
+ {
+ CoLockObjectExternal( m_pDropTarget, FALSE, TRUE);
+ m_pDropTarget->Release();
+ m_pDropTarget = nullptr;
+ }
+
+ if( m_oleThreadId)
+ {
+ if( m_oleThreadId == CoGetCurrentProcess() )
+ OleUninitialize();
+ }
+
+}
+
+void SAL_CALL DropTarget::initialize( const Sequence< Any >& aArguments )
+{
+ // The window must be registered for Dnd by RegisterDragDrop. We must ensure
+ // that RegisterDragDrop is called from an STA ( OleInitialize) thread.
+ // As long as the window is registered we need to receive OLE messages in
+ // an OLE thread. That is to say, if DropTarget::initialize was called from an
+ // MTA thread then we create an OLE thread in which the window is registered.
+ // The thread will stay alive until aver RevokeDragDrop has been called.
+
+ // Additionally even if RegisterDragDrop is called from an STA thread we have
+ // to ensure that it is called from the same thread that created the Window
+ // otherwise messages sent during DND won't reach the windows message queue.
+ // Calling AttachThreadInput first would resolve this problem but would block
+ // the message queue of the calling thread. So if the current thread
+ // (even if it's an STA thread) and the thread that created the window are not
+ // identical we need to create a new thread as we do when the calling thread is
+ // an MTA thread.
+
+ if( aArguments.getLength() > 0)
+ {
+ // Get the window handle from aArgument. It is needed for RegisterDragDrop.
+ m_hWnd= reinterpret_cast<HWND>(static_cast<sal_uIntPtr>(*o3tl::doAccess<sal_uInt64>(aArguments[0])));
+ OSL_ASSERT( IsWindow( m_hWnd) );
+
+ // Obtain the id of the thread that created the window
+ m_threadIdWindow= GetWindowThreadProcessId( m_hWnd, nullptr);
+
+ HRESULT hr= OleInitialize( nullptr);
+
+ // Current thread is MTA or Current thread and Window thread are not identical
+ if( hr == RPC_E_CHANGED_MODE || GetCurrentThreadId() != m_threadIdWindow )
+ {
+ OSL_ENSURE( ! m_threadIdTarget,"initialize was called twice");
+ // create the IDropTargetImplementation
+ m_pDropTarget= new IDropTargetImpl( *this );
+ m_pDropTarget->AddRef();
+
+ // Obtain the id of the thread that created the window
+ m_threadIdWindow= GetWindowThreadProcessId( m_hWnd, nullptr);
+ // The event is set by the thread that we will create momentarily.
+ // It indicates that the thread is ready to receive messages.
+ HANDLE m_evtThreadReady= CreateEventW( nullptr, FALSE, FALSE, nullptr);
+
+ m_hOleThread= CreateThread( nullptr, 0, DndTargetOleSTAFunc,
+ &m_evtThreadReady, 0, &m_threadIdTarget);
+ WaitForSingleObject( m_evtThreadReady, INFINITE);
+ CloseHandle( m_evtThreadReady);
+ PostThreadMessageW( m_threadIdTarget, WM_REGISTERDRAGDROP, reinterpret_cast<WPARAM>(this), 0);
+ }
+ else if( hr == S_OK || hr == S_FALSE)
+ {
+ // current thread is STA
+ // If OleInitialize has been called by the caller then we must not call
+ // OleUninitialize
+ if( hr == S_OK)
+ {
+ // caller did not call OleInitialize, so we call OleUninitialize
+ // remember the thread that will call OleUninitialize
+ m_oleThreadId= CoGetCurrentProcess(); // get a unique thread id
+ }
+
+ // Get the window handle from aArgument. It is needed for RegisterDragDrop.
+ // create the IDropTargetImplementation
+ m_pDropTarget= new IDropTargetImpl( *this );
+ m_pDropTarget->AddRef();
+ // CoLockObjectExternal is prescribed by the protocol. It bumps up the ref count
+ if( SUCCEEDED( CoLockObjectExternal( m_pDropTarget, TRUE, FALSE)))
+ {
+ if( FAILED( RegisterDragDrop( m_hWnd, m_pDropTarget) ) )
+ {
+ // do clean up if drag and drop is not possible
+ CoLockObjectExternal( m_pDropTarget, FALSE, FALSE);
+ m_pDropTarget->Release();
+ m_pDropTarget = nullptr;
+ m_hWnd= nullptr;
+ }
+ }
+ }
+ else
+ throw Exception("OleInitialize failed with " + OUString::number(hr), nullptr);
+
+ }
+}
+
+// This function is called as extra thread from DragSource::startDrag.
+// The function carries out a drag and drop operation by calling
+// DoDragDrop. The thread also notifies all XSourceListener.
+DWORD WINAPI DndTargetOleSTAFunc(LPVOID pParams)
+{
+ osl_setThreadName("DropTarget DndTargetOleSTAFunc");
+
+ HRESULT hr= OleInitialize( nullptr);
+ if( SUCCEEDED( hr) )
+ {
+ MSG msg;
+ // force the creation of a message queue
+ PeekMessageW( &msg, nullptr, 0, 0, PM_NOREMOVE);
+ // Signal the creator ( DropTarget::initialize) that the thread is
+ // ready to receive messages.
+ SetEvent( *static_cast<HANDLE*>(pParams));
+ // Thread id is needed for attaching this message queue to the one of the
+ // thread where the window was created.
+ DWORD threadId= GetCurrentThreadId();
+ // We force the creation of a thread message queue. This is necessary
+ // for a later call to AttachThreadInput
+ for (;;)
+ {
+ int const bRet = GetMessageW(&msg, nullptr, 0, 0);
+ if (bRet == 0)
+ {
+ break;
+ }
+ if (-1 == bRet)
+ {
+ SAL_WARN("vcl.win.dtrans", "GetMessageW failed: " << WindowsErrorString(GetLastError()));
+ break;
+ }
+ if( msg.message == WM_REGISTERDRAGDROP)
+ {
+ DropTarget *pTarget= reinterpret_cast<DropTarget*>(msg.wParam);
+ // This thread is attached to the thread that created the window. Hence
+ // this thread also receives all mouse and keyboard messages which are
+ // needed
+ AttachThreadInput( threadId , pTarget->m_threadIdWindow, TRUE );
+
+ if( SUCCEEDED( CoLockObjectExternal(pTarget-> m_pDropTarget, TRUE, FALSE)))
+ {
+ if( FAILED( RegisterDragDrop( pTarget-> m_hWnd, pTarget-> m_pDropTarget) ) )
+ {
+ // do clean up if drag and drop is not possible
+ CoLockObjectExternal( pTarget->m_pDropTarget, FALSE, FALSE);
+ pTarget->m_pDropTarget->Release();
+ pTarget->m_pDropTarget = nullptr;
+ pTarget->m_hWnd= nullptr;
+ }
+ }
+ }
+ else if( msg.message == WM_REVOKEDRAGDROP)
+ {
+ DropTarget *pTarget= reinterpret_cast<DropTarget*>(msg.wParam);
+ RevokeDragDrop( pTarget-> m_hWnd);
+ // Detach this thread from the window thread
+ AttachThreadInput( threadId, pTarget->m_threadIdWindow, FALSE);
+ pTarget->m_hWnd= nullptr;
+ break;
+ }
+ TranslateMessage( &msg);
+ DispatchMessageW( &msg);
+ }
+ OleUninitialize();
+ }
+ return 0;
+}
+
+// XServiceInfo
+OUString SAL_CALL DropTarget::getImplementationName( )
+{
+ return "com.sun.star.comp.datatransfer.dnd.OleDropTarget_V1";
+}
+// XServiceInfo
+sal_Bool SAL_CALL DropTarget::supportsService( const OUString& ServiceName )
+{
+ return cppu::supportsService(this, ServiceName);
+}
+
+Sequence< OUString > SAL_CALL DropTarget::getSupportedServiceNames( )
+{
+ return { "com.sun.star.datatransfer.dnd.OleDropTarget" };
+}
+
+// XDropTarget
+void SAL_CALL DropTarget::addDropTargetListener( const Reference< XDropTargetListener >& dtl )
+{
+ rBHelper.addListener( cppu::UnoType<decltype(dtl)>::get(), dtl );
+}
+
+void SAL_CALL DropTarget::removeDropTargetListener( const Reference< XDropTargetListener >& dtl )
+{
+ rBHelper.removeListener( cppu::UnoType<decltype(dtl)>::get(), dtl );
+}
+
+sal_Bool SAL_CALL DropTarget::isActive( )
+{
+ return m_bActive; //m_bDropTargetRegistered;
+}
+
+void SAL_CALL DropTarget::setActive( sal_Bool _b )
+{
+ MutexGuard g(m_aMutex);
+ m_bActive= _b;
+}
+
+sal_Int8 SAL_CALL DropTarget::getDefaultActions( )
+{
+ return m_nDefaultActions;
+}
+
+void SAL_CALL DropTarget::setDefaultActions( sal_Int8 actions )
+{
+ OSL_ENSURE( actions < 8, "No valid default actions");
+ m_nDefaultActions= actions;
+}
+
+HRESULT DropTarget::DragEnter( IDataObject *pDataObj,
+ DWORD grfKeyState,
+ POINTL pt,
+ DWORD *pdwEffect)
+{
+#if defined DBG_CONSOLE_OUT
+ printf("\nDropTarget::DragEnter state: %x effect %d", grfKeyState, *pdwEffect);
+#endif
+ if( m_bActive )
+ {
+ // Intersection of pdwEffect and the allowed actions ( setDefaultActions)
+ m_nCurrentDropAction= getFilteredActions( grfKeyState, *pdwEffect);
+ // m_nLastDropAction has to be set by a listener. If no listener calls
+ //XDropTargetDragContext::acceptDrag and specifies an action then pdwEffect
+ // will be DROPEFFECT_NONE throughout
+ m_nLastDropAction= ACTION_DEFAULT | ACTION_MOVE;
+
+ m_currentDragContext = new TargetDragContext(this);
+
+ //--> TRA
+
+ // shortcut
+ if ( g_XTransferable.is( ) )
+ m_currentData = g_XTransferable;
+ else
+ {
+ // Convert the IDataObject to a XTransferable
+ m_currentData = new CDOTransferable(m_xContext, IDataObjectPtr(pDataObj));
+ }
+
+ //<-- TRA
+
+ if( m_nCurrentDropAction != ACTION_NONE)
+ {
+ DropTargetDragEnterEvent e;
+ e.SupportedDataFlavors= m_currentData->getTransferDataFlavors();
+ e.DropAction= m_nCurrentDropAction;
+ e.Source.set( static_cast<XDropTarget*>(this),UNO_QUERY);
+ e.Context= m_currentDragContext;
+ POINT point={ pt.x, pt.y};
+ ScreenToClient( m_hWnd, &point);
+ e.LocationX= point.x;
+ e.LocationY= point.y;
+ e.SourceActions= dndOleDropEffectsToActions( *pdwEffect);
+
+ fire_dragEnter( e);
+ // Check if the action derived from grfKeyState (m_nCurrentDropAction) or the action set
+ // by the listener (m_nCurrentDropAction) is allowed by the source. Only an allowed action is set
+ // in pdwEffect. The listener notification is asynchronous, that is we cannot expect that the listener
+ // has already reacted to the notification.
+ // If there is more than one valid action which is the case when ALT or RIGHT MOUSE BUTTON is pressed
+ // then getDropEffect returns DROPEFFECT_MOVE which is the default value if no other modifier is pressed.
+ // On drop the target should present the user a dialog from which the user may change the action.
+ sal_Int8 allowedActions= dndOleDropEffectsToActions( *pdwEffect);
+ *pdwEffect= dndActionsToSingleDropEffect( m_nLastDropAction & allowedActions);
+ }
+ else
+ {
+ *pdwEffect= DROPEFFECT_NONE;
+ }
+ }
+ return S_OK;
+}
+
+HRESULT DropTarget::DragOver( DWORD grfKeyState,
+ POINTL pt,
+ DWORD *pdwEffect)
+{
+ if( m_bActive)
+ {
+ m_nCurrentDropAction= getFilteredActions( grfKeyState, *pdwEffect);
+
+ if( m_nCurrentDropAction)
+ {
+ DropTargetDragEvent e;
+ e.DropAction= m_nCurrentDropAction;
+ e.Source.set(static_cast<XDropTarget*>(this),UNO_QUERY);
+ e.Context= m_currentDragContext;
+ POINT point={ pt.x, pt.y};
+ ScreenToClient( m_hWnd, &point);
+ e.LocationX= point.x;
+ e.LocationY= point.y;
+ e.SourceActions= dndOleDropEffectsToActions( *pdwEffect);
+
+ // if grfKeyState has changed since the last DragOver then fire events.
+ // A listener might change m_nCurrentDropAction by calling the
+ // XDropTargetDragContext::acceptDrag function. But this is not important
+ // because in the afterwards fired dragOver event the action reflects
+ // grgKeyState again.
+ if( m_nLastDropAction != m_nCurrentDropAction)
+ fire_dropActionChanged( e);
+
+ // The Event contains a XDropTargetDragContext implementation.
+ fire_dragOver( e);
+ // Check if the action derived from grfKeyState (m_nCurrentDropAction) or the action set
+ // by the listener (m_nCurrentDropAction) is allowed by the source. Only an allowed action is set
+ // in pdwEffect. The listener notification is asynchronous, that is we cannot expect that the listener
+ // has already reacted to the notification.
+ // If there is more than one valid action which is the case when ALT or RIGHT MOUSE BUTTON is pressed
+ // then getDropEffect returns DROPEFFECT_MOVE which is the default value if no other modifier is pressed.
+ // On drop the target should present the user a dialog from which the user may change the action.
+ sal_Int8 allowedActions= dndOleDropEffectsToActions( *pdwEffect);
+ // set the last action to the current if listener has not changed the value yet
+ *pdwEffect= dndActionsToSingleDropEffect( m_nLastDropAction & allowedActions);
+ }
+ else
+ {
+ *pdwEffect= DROPEFFECT_NONE;
+ }
+ }
+#if defined DBG_CONSOLE_OUT
+ printf("\nDropTarget::DragOver %d", *pdwEffect );
+#endif
+ return S_OK;
+}
+
+HRESULT DropTarget::DragLeave()
+{
+#if defined DBG_CONSOLE_OUT
+ printf("\nDropTarget::DragLeave");
+#endif
+ if( m_bActive)
+ {
+
+ m_currentData=nullptr;
+ m_currentDragContext= nullptr;
+ m_currentDropContext= nullptr;
+ m_nLastDropAction= 0;
+
+ if( m_nDefaultActions != ACTION_NONE)
+ {
+ DropTargetEvent e;
+ e.Source= static_cast<XDropTarget*>(this);
+
+ fire_dragExit( e);
+ }
+ }
+ return S_OK;
+}
+
+HRESULT DropTarget::Drop( IDataObject * /*pDataObj*/,
+ DWORD grfKeyState,
+ POINTL pt,
+ DWORD *pdwEffect)
+{
+#if defined DBG_CONSOLE_OUT
+ printf("\nDropTarget::Drop");
+#endif
+ if( m_bActive)
+ {
+
+ m_bDropComplete= false;
+
+ m_nCurrentDropAction= getFilteredActions( grfKeyState, *pdwEffect);
+ m_currentDropContext = new TargetDropContext(this);
+ if( m_nCurrentDropAction)
+ {
+ DropTargetDropEvent e;
+ e.DropAction= m_nCurrentDropAction;
+ e.Source.set( static_cast<XDropTarget*>(this), UNO_QUERY);
+ e.Context= m_currentDropContext;
+ POINT point={ pt.x, pt.y};
+ ScreenToClient( m_hWnd, &point);
+ e.LocationX= point.x;
+ e.LocationY= point.y;
+ e.SourceActions= dndOleDropEffectsToActions( *pdwEffect);
+ e.Transferable= m_currentData;
+ fire_drop( e);
+
+ //if fire_drop returns than a listener might have modified m_nCurrentDropAction
+ if( m_bDropComplete )
+ {
+ sal_Int8 allowedActions= dndOleDropEffectsToActions( *pdwEffect);
+ *pdwEffect= dndActionsToSingleDropEffect( m_nCurrentDropAction & allowedActions);
+ }
+ else
+ *pdwEffect= DROPEFFECT_NONE;
+ }
+ else
+ *pdwEffect= DROPEFFECT_NONE;
+
+ m_currentData= nullptr;
+ m_currentDragContext= nullptr;
+ m_currentDropContext= nullptr;
+ m_nLastDropAction= 0;
+ }
+ return S_OK;
+}
+
+void DropTarget::fire_drop( const DropTargetDropEvent& dte)
+{
+ OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+ if( pContainer)
+ {
+ OInterfaceIteratorHelper iter( *pContainer);
+ while( iter.hasMoreElements())
+ {
+ Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+ listener->drop( dte);
+ }
+ }
+}
+
+void DropTarget::fire_dragEnter( const DropTargetDragEnterEvent& e )
+{
+ OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+ if( pContainer)
+ {
+ OInterfaceIteratorHelper iter( *pContainer);
+ while( iter.hasMoreElements())
+ {
+ Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+ listener->dragEnter( e);
+ }
+ }
+}
+
+void DropTarget::fire_dragExit( const DropTargetEvent& dte )
+{
+ OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+
+ if( pContainer)
+ {
+ OInterfaceIteratorHelper iter( *pContainer);
+ while( iter.hasMoreElements())
+ {
+ Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+ listener->dragExit( dte);
+ }
+ }
+}
+
+void DropTarget::fire_dragOver( const DropTargetDragEvent& dtde )
+{
+ OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+ if( pContainer)
+ {
+ OInterfaceIteratorHelper iter( *pContainer );
+ while( iter.hasMoreElements())
+ {
+ Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+ listener->dragOver( dtde);
+ }
+ }
+}
+
+void DropTarget::fire_dropActionChanged( const DropTargetDragEvent& dtde )
+{
+ OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+ if( pContainer)
+ {
+ OInterfaceIteratorHelper iter( *pContainer);
+ while( iter.hasMoreElements())
+ {
+ Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+ listener->dropActionChanged( dtde);
+ }
+ }
+}
+
+// Non - interface functions
+// DropTarget fires events to XDropTargetListeners. The event object contains an
+// XDropTargetDropContext implementation. When the listener calls on that interface
+// then the calls are delegated from DropContext (XDropTargetDropContext) to these
+// functions.
+// Only one listener which visible area is affected is allowed to call on
+// XDropTargetDropContext
+// Returning sal_False would cause the XDropTargetDropContext or ..DragContext implementation
+// to throw an InvalidDNDOperationException, meaning that a Drag is not currently performed.
+// return sal_False results in throwing an InvalidDNDOperationException in the caller.
+
+void DropTarget::_acceptDrop(sal_Int8 dropOperation, const Reference<XDropTargetDropContext>& context)
+{
+ if( context == m_currentDropContext)
+ {
+ m_nCurrentDropAction= dropOperation;
+ }
+}
+
+void DropTarget::_rejectDrop( const Reference<XDropTargetDropContext>& context)
+{
+ if( context == m_currentDropContext)
+ {
+ m_nCurrentDropAction= ACTION_NONE;
+ }
+}
+
+void DropTarget::_dropComplete(bool success, const Reference<XDropTargetDropContext>& context)
+{
+ if(context == m_currentDropContext)
+ {
+ m_bDropComplete= success;
+ }
+}
+
+// DropTarget fires events to XDropTargetListeners. The event object can contains an
+// XDropTargetDragContext implementation. When the listener calls on that interface
+// then the calls are delegated from DragContext (XDropTargetDragContext) to these
+// functions.
+// Only one listener which visible area is affected is allowed to call on
+// XDropTargetDragContext
+void DropTarget::_acceptDrag( sal_Int8 dragOperation, const Reference<XDropTargetDragContext>& context)
+{
+ if( context == m_currentDragContext)
+ {
+ m_nLastDropAction= dragOperation;
+ }
+}
+
+void DropTarget::_rejectDrag( const Reference<XDropTargetDragContext>& context)
+{
+ if(context == m_currentDragContext)
+ {
+ m_nLastDropAction= ACTION_NONE;
+ }
+}
+
+// This function determines the action dependent on the pressed
+// key modifiers ( CTRL, SHIFT, ALT, Right Mouse Button). The result
+// is then checked against the allowed actions which can be set through
+// XDropTarget::setDefaultActions. Only those values which are also
+// default actions are returned. If setDefaultActions has not been called
+// beforehand the default actions comprise all possible actions.
+// params: grfKeyState - the modifier keys and mouse buttons currently pressed
+inline sal_Int8 DropTarget::getFilteredActions( DWORD grfKeyState, DWORD dwEffect)
+{
+ sal_Int8 actions= dndOleKeysToAction( grfKeyState, dndOleDropEffectsToActions( dwEffect));
+ return actions & m_nDefaultActions;
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+dtrans_DropTarget_get_implementation(
+ css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&)
+{
+ return cppu::acquire(new DropTarget(context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */