1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 #ifndef _DROPTARGET_HXX_ 24 #define _DROPTARGET_HXX_ 25 26 #include <com/sun/star/lang/XInitialization.hpp> 27 #include <com/sun/star/datatransfer/dnd/XDropTarget.hpp> 28 #include <com/sun/star/datatransfer/dnd/XDropTargetDragContext.hpp> 29 #include <com/sun/star/datatransfer/dnd/XDropTargetDropContext.hpp> 30 #include <com/sun/star/datatransfer/dnd/DropTargetDragEnterEvent.hpp> 31 #include <com/sun/star/lang/XServiceInfo.hpp> 32 33 #include <cppuhelper/basemutex.hxx> 34 #include <cppuhelper/compbase5.hxx> 35 #include <cppuhelper/interfacecontainer.hxx> 36 #include <osl/mutex.hxx> 37 38 #include "globals.hxx" 39 40 41 using namespace cppu; 42 using namespace osl; 43 using namespace rtl; 44 using namespace com::sun::star::datatransfer; 45 using namespace com::sun::star::datatransfer::dnd; 46 using namespace com::sun::star::lang; 47 using namespace com::sun::star::uno; 48 49 50 // The client 51 // has to call XComponent::dispose. The thread that calls initialize 52 // must also execute the destruction of the instance. This is because 53 // initialize calls OleInitialize and the destructor calls OleUninitialize. 54 // If the service calls OleInitialize then it also calls OleUnitialize when 55 // it is destroyed. Therefore no second instance may exist which was 56 // created in the same thread and still needs OLE. 57 class DropTarget: public cppu::BaseMutex, 58 public WeakComponentImplHelper5< XInitialization, 59 XDropTarget, 60 XDropTargetDragContext, 61 XDropTargetDropContext, 62 XServiceInfo> 63 { 64 private: 65 Reference<XMultiServiceFactory> m_serviceFactory; 66 // The native window which acts as drop target. 67 HWND m_hWnd; 68 POINTL ptlMouse; 69 // OS/2 does not provide a DM_DRAGENTER message, provide emulation 70 bool dragEnterEmulation; 71 // If mbActive == sal_True then events are fired to XDropTargetListener s, 72 // none otherwise. The default value is sal_True. 73 bool mbActive; 74 sal_Int8 mDragSourceSupportedActions; 75 sal_Int8 mSelectedDropAction; 76 sal_Int8 mDefaultActions; 77 Reference<XTransferable> mXTransferable; 78 79 public: 80 DropTarget( const Reference<XMultiServiceFactory>& sf); 81 virtual ~DropTarget(); 82 83 // Overrides WeakComponentImplHelper::disposing which is called by 84 // WeakComponentImplHelper::dispose 85 // Must be called. 86 virtual void SAL_CALL disposing(); 87 88 // XInitialization 89 virtual void SAL_CALL initialize( const Sequence< Any >& aArguments) 90 throw(Exception); 91 92 // XDropTarget 93 virtual void SAL_CALL addDropTargetListener( const Reference< XDropTargetListener >& dtl ) 94 throw(RuntimeException); 95 virtual void SAL_CALL removeDropTargetListener( const Reference< XDropTargetListener >& dtl ) 96 throw(RuntimeException); 97 98 // Default is not active 99 virtual sal_Bool SAL_CALL isActive() throw(RuntimeException); 100 virtual void SAL_CALL setActive(sal_Bool) throw(RuntimeException); 101 virtual sal_Int8 SAL_CALL getDefaultActions() throw(RuntimeException); 102 virtual void SAL_CALL setDefaultActions(sal_Int8) throw(RuntimeException); 103 104 // XDropTargetDragContext 105 virtual void SAL_CALL acceptDrag( sal_Int8) throw(RuntimeException); 106 virtual void SAL_CALL rejectDrag() throw(RuntimeException); 107 108 // XDropTargetDropContext 109 virtual void SAL_CALL acceptDrop(sal_Int8) throw (RuntimeException); 110 virtual void SAL_CALL rejectDrop() throw (RuntimeException); 111 virtual void SAL_CALL dropComplete(sal_Bool) throw (RuntimeException); 112 113 // XServiceInfo 114 virtual rtl::OUString SAL_CALL getImplementationName() throw (RuntimeException); 115 virtual sal_Bool SAL_CALL supportsService(const rtl::OUString& ServiceName) throw (RuntimeException); 116 virtual Sequence< rtl::OUString > SAL_CALL getSupportedServiceNames() throw (RuntimeException); 117 118 // OS/2 window messaging handlers 119 MRESULT dragEnter( PDRAGINFO dragInfo); 120 MRESULT dragOver( PDRAGINFO dragInfo); 121 MRESULT dragLeave( PDRAGINFO dragInfo); 122 MRESULT drop( PDRAGINFO dragInfo); 123 MRESULT renderComplete( PDRAGTRANSFER); 124 125 public: 126 // default window frame procedure 127 PFNWP defWndProc; 128 129 private: 130 void fire_drop(const DropTargetDropEvent& dte); 131 void fire_dragEnter(const DropTargetDragEnterEvent& dtdee); 132 void fire_dragExit(const DropTargetEvent& dte); 133 void fire_dragOver(const DropTargetDragEvent& dtde); 134 void fire_dropActionChanged(const DropTargetDragEvent& dtde); 135 136 }; 137 #endif // _DROPTARGET_HXX_ 138