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27 
28 #ifndef _DTRANS_X11_SELECTION_HXX_
29 #define _DTRANS_X11_SELECTION_HXX_
30 
31 #include <cppuhelper/compbase3.hxx>
32 #include <cppuhelper/compbase4.hxx>
33 #include <com/sun/star/datatransfer/XTransferable.hpp>
34 #include <com/sun/star/datatransfer/dnd/XDropTarget.hpp>
35 #include <com/sun/star/datatransfer/dnd/XDragSource.hpp>
36 #include <com/sun/star/awt/XDisplayConnection.hpp>
37 #include <com/sun/star/lang/XInitialization.hpp>
38 #include <com/sun/star/lang/XServiceInfo.hpp>
39 #include <com/sun/star/script/XInvocation.hpp>
40 #include <com/sun/star/frame/XDesktop.hpp>
41 #include <osl/thread.h>
42 
43 #ifndef _OSL_CONDITION_HXX_
44 #include <osl/conditn.hxx>
45 #endif
46 
47 #include <hash_map>
48 #include <list>
49 
50 #include "tools/prex.h"
51 #include <X11/Xlib.h>
52 #include "tools/postx.h"
53 
54 #define XDND_IMPLEMENTATION_NAME "com.sun.star.datatransfer.dnd.XdndSupport"
55 #define XDND_DROPTARGET_IMPLEMENTATION_NAME "com.sun.star.datatransfer.dnd.XdndDropTarget"
56 
57 using namespace ::com::sun::star::uno;
58 
59 namespace x11 {
60 
61 	class PixmapHolder; // in bmp.hxx
62 
63 // ------------------------------------------------------------------------
64 	rtl_TextEncoding getTextPlainEncoding( const ::rtl::OUString& rMimeType );
65 
66 	class SelectionAdaptor
67 	{
68 	public:
69 		virtual com::sun::star::uno::Reference< ::com::sun::star::datatransfer::XTransferable > getTransferable() = 0;
70 		virtual void clearTransferable() = 0;
71         virtual void fireContentsChanged() = 0;
72         virtual com::sun::star::uno::Reference< XInterface > getReference() = 0;
73         // returns a reference that will keep the SelectionAdaptor alive until the
74         // refernce is released
75 	};
76 
77 	class DropTarget :
78 		public ::cppu::WeakComponentImplHelper3<
79 			::com::sun::star::datatransfer::dnd::XDropTarget,
80 			::com::sun::star::lang::XInitialization,
81 			::com::sun::star::lang::XServiceInfo
82 		>
83 	{
84 	public:
85 		::osl::Mutex				m_aMutex;
86 		bool						m_bActive;
87 		sal_Int8					m_nDefaultActions;
88 		XLIB_Window					m_aTargetWindow;
89 		class SelectionManager*		m_pSelectionManager;
90 		com::sun::star::uno::Reference< ::com::sun::star::datatransfer::dnd::XDragSource >
91 									m_xSelectionManager;
92 		::std::list< com::sun::star::uno::Reference< ::com::sun::star::datatransfer::dnd::XDropTargetListener > >
93 							m_aListeners;
94 
95 		DropTarget();
96 		virtual ~DropTarget();
97 
98 		// convenience functions that loop over listeners
99 		void dragEnter( const ::com::sun::star::datatransfer::dnd::DropTargetDragEnterEvent& dtde ) throw();
100 		void dragExit( const ::com::sun::star::datatransfer::dnd::DropTargetEvent& dte ) throw();
101 		void dragOver( const ::com::sun::star::datatransfer::dnd::DropTargetDragEvent& dtde ) throw();
102 		void drop( const ::com::sun::star::datatransfer::dnd::DropTargetDropEvent& dtde ) throw();
103 
104 		// XInitialization
105 		virtual void		SAL_CALL initialize( const Sequence< Any >& args ) throw ( ::com::sun::star::uno::Exception );
106 
107 		// XDropTarget
108 		virtual void		SAL_CALL addDropTargetListener( const com::sun::star::uno::Reference< ::com::sun::star::datatransfer::dnd::XDropTargetListener >& ) throw();
109 		virtual void		SAL_CALL removeDropTargetListener( const com::sun::star::uno::Reference< ::com::sun::star::datatransfer::dnd::XDropTargetListener >& ) throw();
110 		virtual sal_Bool	SAL_CALL isActive() throw();
111 		virtual void		SAL_CALL setActive( sal_Bool active ) throw();
112 		virtual sal_Int8 	SAL_CALL getDefaultActions() throw();
113 		virtual void		SAL_CALL setDefaultActions( sal_Int8 actions ) throw();
114 
115 		// XServiceInfo
116 		virtual ::rtl::OUString SAL_CALL getImplementationName() throw();
117 		virtual sal_Bool	SAL_CALL supportsService( const ::rtl::OUString& ServiceName ) throw();
118 		virtual ::com::sun::star::uno::Sequence< ::rtl::OUString >
119 							SAL_CALL getSupportedServiceNames() throw();
120 	};
121 
122 	class SelectionManagerHolder :
123 		public ::cppu::WeakComponentImplHelper3<
124 			::com::sun::star::datatransfer::dnd::XDragSource,
125 			::com::sun::star::lang::XInitialization,
126 			::com::sun::star::lang::XServiceInfo
127 		>
128 	{
129 		::osl::Mutex m_aMutex;
130 		com::sun::star::uno::Reference< ::com::sun::star::datatransfer::dnd::XDragSource >
131 			m_xRealDragSource;
132 	public:
133 		SelectionManagerHolder();
134 		virtual ~SelectionManagerHolder();
135 
136 		// XServiceInfo
137 		virtual ::rtl::OUString SAL_CALL getImplementationName() throw();
138 		virtual sal_Bool	SAL_CALL supportsService( const ::rtl::OUString& ServiceName ) throw();
139 		virtual ::com::sun::star::uno::Sequence< ::rtl::OUString >
140 							SAL_CALL getSupportedServiceNames() throw();
141 
142 		// XInitialization
143 		virtual void		SAL_CALL initialize( const Sequence< Any >& arguments ) throw( ::com::sun::star::uno::Exception );
144 
145 		// XDragSource
146 		virtual sal_Bool	SAL_CALL isDragImageSupported() throw();
147 		virtual sal_Int32	SAL_CALL getDefaultCursor( sal_Int8 dragAction ) throw();
148 		virtual void		SAL_CALL startDrag(
149 			const ::com::sun::star::datatransfer::dnd::DragGestureEvent& trigger,
150 			sal_Int8 sourceActions, sal_Int32 cursor, sal_Int32 image,
151 			const com::sun::star::uno::Reference< ::com::sun::star::datatransfer::XTransferable >& transferable,
152 			const com::sun::star::uno::Reference< ::com::sun::star::datatransfer::dnd::XDragSourceListener >& listener
153 			) throw();
154 
155 	};
156 
157 
158 	class SelectionManager :
159 		public ::cppu::WeakImplHelper4<
160 			::com::sun::star::datatransfer::dnd::XDragSource,
161 			::com::sun::star::lang::XInitialization,
162 			::com::sun::star::awt::XEventHandler,
163 			::com::sun::star::frame::XTerminateListener
164 		>,
165 		public SelectionAdaptor
166 	{
167         static ::std::hash_map< ::rtl::OUString, SelectionManager*, ::rtl::OUStringHash >& getInstances();
168 
169 		// for INCR type selection transfer
170 		// INCR protocol is used if the data cannot
171 		// be transported at once but in parts
172 		// IncrementalTransfer holds the bytes to be transmitted
173 		// as well a the current position
174 		// INCR triggers the delivery of the next part by deleting the
175 		// property used to transfer the data
176 		struct IncrementalTransfer
177 		{
178 			Sequence< sal_Int8 >			m_aData;
179 			int								m_nBufferPos;
180 			XLIB_Window							m_aRequestor;
181 			Atom							m_aProperty;
182 			Atom							m_aTarget;
183 			int								m_nFormat;
184 			int								m_nTransferStartTime;
185 		};
186         int m_nIncrementalThreshold;
187 
188 		// a struct to hold the data associated with a selection
189 		struct Selection
190 		{
191 			enum State
192 			{
193 				Inactive, WaitingForResponse, WaitingForData, IncrementalTransfer
194 			};
195 
196 			State						m_eState;
197 			SelectionAdaptor*			m_pAdaptor;
198 			Atom						m_aAtom;
199 			::osl::Condition			m_aDataArrived;
200 			Sequence< sal_Int8 >		m_aData;
201 			Sequence< ::com::sun::star::datatransfer::DataFlavor >
202 										m_aTypes;
203             std::vector< Atom >			m_aNativeTypes;
204 			// this is used for caching
205 			// m_aTypes is invalid after 2 seconds
206             // m_aNativeTypes contains the corresponding original atom
207             Atom						m_aRequestedType;
208             // m_aRequestedType is only valid while WaitingForResponse and WaitingFotData
209 			int							m_nLastTimestamp;
210 			bool						m_bHaveUTF16;
211             Atom                        m_aUTF8Type;
212             bool						m_bHaveCompound;
213             bool						m_bOwner;
214             XLIB_Window					m_aLastOwner;
215             PixmapHolder*				m_pPixmap;
216             // m_nOrigXLIB_Timestamp contains the XLIB_Timestamp at which the seclection
217             // was acquired; needed for XLIB_TimeSTAMP target
218             XLIB_Time                        m_nOrigTimestamp;
219 
220 			Selection() : m_eState( Inactive ),
221 						  m_pAdaptor( NULL ),
222 						  m_aAtom( None ),
223                           m_aRequestedType( None ),
224 						  m_nLastTimestamp( 0 ),
225 						  m_bHaveUTF16( false ),
226                           m_aUTF8Type( None ),
227                           m_bHaveCompound( false ),
228                           m_bOwner( false ),
229                           m_aLastOwner( None ),
230                           m_pPixmap( NULL ),
231                           m_nOrigTimestamp( CurrentTime )
232 				{}
233 		};
234 
235 		// a struct to hold data associated with a XDropTarget
236 		struct DropTargetEntry
237 		{
238 			DropTarget*		m_pTarget;
239 			XLIB_Window		m_aRootWindow;
240 
241 			DropTargetEntry() : m_pTarget( NULL ), m_aRootWindow( None ) {}
242 			DropTargetEntry( DropTarget* pTarget ) :
243 					m_pTarget( pTarget ),
244 					m_aRootWindow( None )
245 				{}
246 			DropTargetEntry( const DropTargetEntry& rEntry ) :
247 					m_pTarget( rEntry.m_pTarget ),
248 					m_aRootWindow( rEntry.m_aRootWindow )
249 				{}
250 			~DropTargetEntry() {}
251 
252 			DropTarget* operator->() const { return m_pTarget; }
253 			DropTargetEntry& operator=(const DropTargetEntry& rEntry)
254 				{ m_pTarget = rEntry.m_pTarget; m_aRootWindow = rEntry.m_aRootWindow; return *this; }
255 		};
256 
257 		// internal data
258 		Display*					m_pDisplay;
259 		oslThread					m_aThread;
260 		oslThread					m_aDragExecuteThread;
261         ::osl::Condition			m_aDragRunning;
262 		XLIB_Window					m_aWindow;
263 		com::sun::star::uno::Reference< ::com::sun::star::awt::XDisplayConnection >
264 									m_xDisplayConnection;
265         com::sun::star::uno::Reference< com::sun::star::script::XInvocation >
266         							m_xBitmapConverter;
267         sal_Int32                   m_nSelectionTimeout;
268         XLIB_Time                   m_nSelectionTimestamp;
269 
270 
271 		// members used for Xdnd
272 
273 		// drop only
274 
275 		// contains the XdndEnterEvent of a drop action running
276 		// with one of our targets. The data.l[0] member
277 		// (conatining the drag source XLIB_Window) is set
278 		// to None while that is not the case
279 		XClientMessageEvent			m_aDropEnterEvent;
280 		// set to false on XdndEnter
281 		// set to true on first XdndPosition or XdndLeave
282 		bool						m_bDropEnterSent;
283 		XLIB_Window					m_aCurrentDropWindow;
284 		// XLIB_Time code of XdndDrop
285 		XLIB_Time					m_nDropTime;
286 		sal_Int8					m_nLastDropAction;
287 		// XTransferable for Xdnd with foreign drag source
288 		com::sun::star::uno::Reference< ::com::sun::star::datatransfer::XTransferable >
289 									m_xDropTransferable;
290 		int							m_nLastX, m_nLastY;
291 		XLIB_Time					m_nDropTimestamp;
292         // set to true when calling drop()
293         // if another XdndEnter is received this shows that
294         // someone forgot to call dropComplete - we should reset
295         // and react to the new drop
296         bool                        m_bDropWaitingForCompletion;
297 
298 		// drag only
299 
300 		// None if no Dnd action is running with us as source
301 		XLIB_Window					m_aDropWindow;
302 		// either m_aDropXLIB_Window or its XdndProxy
303 		XLIB_Window					m_aDropProxy;
304         XLIB_Window					m_aDragSourceWindow;
305 		// XTransferable for Xdnd when we are drag source
306 		com::sun::star::uno::Reference< ::com::sun::star::datatransfer::XTransferable >
307 									m_xDragSourceTransferable;
308 		com::sun::star::uno::Reference< ::com::sun::star::datatransfer::dnd::XDragSourceListener >
309 									m_xDragSourceListener;
310 		// root coordinates
311 		int							m_nLastDragX, m_nLastDragY;
312 		Sequence< ::com::sun::star::datatransfer::DataFlavor >
313 									m_aDragFlavors;
314 		// the rectangle the pointer must leave until a new XdndPosition should
315 		// be sent. empty unless the drop target told to fill
316 		int							m_nNoPosX, m_nNoPosY, m_nNoPosWidth, m_nNoPosHeight;
317 		unsigned int				m_nDragButton;
318 		sal_Int8					m_nUserDragAction;
319         sal_Int8					m_nTargetAcceptAction;
320 		sal_Int8					m_nSourceActions;
321         bool						m_bLastDropAccepted;
322 		bool						m_bDropSuccess;
323 		bool						m_bDropSent;
324 		time_t						m_nDropTimeout;
325 		bool						m_bWaitingForPrimaryConversion;
326 		XLIB_Time					m_nDragTimestamp;
327 
328 		// drag cursors
329 		XLIB_Cursor                 m_aMoveCursor;
330 		XLIB_Cursor                 m_aCopyCursor;
331 		XLIB_Cursor                 m_aLinkCursor;
332 		XLIB_Cursor                 m_aNoneCursor;
333 		XLIB_Cursor                 m_aCurrentCursor;
334 
335 
336 		// drag and drop
337 
338 		int							m_nCurrentProtocolVersion;
339 		::std::hash_map< XLIB_Window, DropTargetEntry >
340 									m_aDropTargets;
341 
342 
343 		// some special atoms that are needed often
344 		Atom						m_nCLIPBOARDAtom;
345 		Atom						m_nTARGETSAtom;
346         Atom                        m_nTIMESTAMPAtom;
347 		Atom						m_nTEXTAtom;
348 		Atom						m_nINCRAtom;
349         Atom						m_nCOMPOUNDAtom;
350         Atom						m_nMULTIPLEAtom;
351         Atom						m_nUTF16Atom;
352         Atom                        m_nImageBmpAtom;
353 		Atom						m_nXdndAware;
354 		Atom						m_nXdndEnter;
355 		Atom						m_nXdndLeave;
356 		Atom						m_nXdndPosition;
357 		Atom						m_nXdndStatus;
358 		Atom						m_nXdndDrop;
359 		Atom						m_nXdndFinished;
360 		Atom						m_nXdndSelection;
361 		Atom						m_nXdndTypeList;
362 		Atom						m_nXdndProxy;
363 		Atom						m_nXdndActionCopy;
364 		Atom						m_nXdndActionMove;
365 		Atom						m_nXdndActionLink;
366 		Atom						m_nXdndActionAsk;
367 		Atom						m_nXdndActionPrivate;
368 
369 		// caching for atoms
370 		::std::hash_map< Atom, ::rtl::OUString >
371 									m_aAtomToString;
372 		::std::hash_map< ::rtl::OUString, Atom, ::rtl::OUStringHash >
373 									m_aStringToAtom;
374 
375 		// the registered selections
376 		::std::hash_map< Atom, Selection* >
377 									m_aSelections;
378 		// IncrementalTransfers in progress
379 		std::hash_map< XLIB_Window, std::hash_map< Atom, IncrementalTransfer > >
380 									m_aIncrementals;
381 
382 		// do not use X11 multithreading capabilities
383 		// since this leads to deadlocks in different Xlib implentations
384 		// (XFree as well as Xsun) use an own mutex instead
385 		::osl::Mutex				m_aMutex;
386         bool                        m_bShutDown;
387 
388 		SelectionManager();
389 		~SelectionManager();
390 
391 		SelectionAdaptor* getAdaptor( Atom selection );
392         PixmapHolder* getPixmapHolder( Atom selection );
393 
394 		// handle various events
395 		bool handleSelectionRequest( XSelectionRequestEvent& rRequest );
396 		bool handleSendPropertyNotify( XPropertyEvent& rNotify );
397 		bool handleReceivePropertyNotify( XPropertyEvent& rNotify );
398 		bool handleSelectionNotify( XSelectionEvent& rNotify );
399 		bool handleDragEvent( XEvent& rMessage );
400 		bool handleDropEvent( XClientMessageEvent& rMessage );
401 
402 		// dnd helpers
403 		void sendDragStatus( Atom nDropAction );
404 		void sendDropPosition( bool bForce, XLIB_Time eventXLIB_Time );
405 		bool updateDragAction( int modifierState );
406 		int getXdndVersion( XLIB_Window aXLIB_Window, XLIB_Window& rProxy );
407 		XLIB_Cursor createCursor( const char* pPointerData, const char* pMaskData, int width, int height, int hotX, int hotY );
408 		// coordinates on root XLIB_Window
409 		void updateDragWindow( int nX, int nY, XLIB_Window aRoot );
410 
411 		bool getPasteData( Atom selection, Atom type, Sequence< sal_Int8 >& rData );
412 		// returns true if conversion was successful
413 		bool convertData( const com::sun::star::uno::Reference< ::com::sun::star::datatransfer::XTransferable >& xTransferable,
414 						  Atom nType,
415                           Atom nSelection,
416                           int & rFormat,
417 						  Sequence< sal_Int8 >& rData );
418         bool sendData( SelectionAdaptor* pAdaptor, XLIB_Window requestor, Atom target, Atom property, Atom selection );
419 
420 		// thread dispatch loop
421         public:
422         // public for extern "C" stub
423 		static void run( void* );
424         private:
425 		void dispatchEvent( int millisec );
426 		// drag thread dispatch
427         public:
428         // public for extern "C" stub
429 		static void runDragExecute( void* );
430         private:
431 		void dragDoDispatch();
432 		bool handleXEvent( XEvent& rEvent );
433 
434         // compound text conversion
435         ::rtl::OString convertToCompound( const ::rtl::OUString& rText );
436         ::rtl::OUString convertFromCompound( const char* pText, int nLen = -1 );
437 
438         sal_Int8 getUserDragAction() const;
439         sal_Int32 getSelectionTimeout();
440 	public:
441 		static SelectionManager& get( const ::rtl::OUString& rDisplayName = ::rtl::OUString() );
442 
443 		Display * getDisplay() { return m_pDisplay; };
444 		XLIB_Window getWindow() { return m_aWindow; };
445 
446 
447 		void registerHandler( Atom selection, SelectionAdaptor& rAdaptor );
448 		void deregisterHandler( Atom selection );
449 		bool requestOwnership( Atom selection );
450 
451         // allow for synchronization over one mutex for XClipboard
452         osl::Mutex& getMutex() { return m_aMutex; }
453 
454 
455 		Atom getAtom( const ::rtl::OUString& rString );
456 		const ::rtl::OUString& getString( Atom nAtom );
457 
458 		// type conversion
459         // note: convertTypeToNative does NOT clear the list, so you can append
460         // multiple types to the same list
461 		void convertTypeToNative( const ::rtl::OUString& rType, Atom selection, int& rFormat, ::std::list< Atom >& rConversions, bool bPushFront = false );
462 		::rtl::OUString convertTypeFromNative( Atom nType, Atom selection, int& rFormat );
463         void getNativeTypeList( const Sequence< com::sun::star::datatransfer::DataFlavor >& rTypes, std::list< Atom >& rOutTypeList, Atom targetselection );
464 
465 		// methods for transferable
466 		bool getPasteDataTypes( Atom selection, Sequence< ::com::sun::star::datatransfer::DataFlavor >& rTypes );
467 		bool getPasteData( Atom selection, const ::rtl::OUString& rType, Sequence< sal_Int8 >& rData );
468 
469 		// for XDropTarget to register/deregister itself
470 		void registerDropTarget( XLIB_Window aXLIB_Window, DropTarget* pTarget );
471 		void deregisterDropTarget( XLIB_Window aXLIB_Window );
472 
473 		// for XDropTarget{Drag|Drop}Context
474 		void accept( sal_Int8 dragOperation, XLIB_Window aDropXLIB_Window, XLIB_Time aXLIB_Timestamp );
475 		void reject( XLIB_Window aDropXLIB_Window, XLIB_Time aXLIB_Timestamp );
476 		void dropComplete( sal_Bool success, XLIB_Window aDropXLIB_Window, XLIB_Time aXLIB_Timestamp );
477 
478 		// for XDragSourceContext
479 		sal_Int32 getCurrentCursor();
480 		void setCursor( sal_Int32 cursor, XLIB_Window aDropXLIB_Window, XLIB_Time aXLIB_Timestamp );
481 		void setImage( sal_Int32 image, XLIB_Window aDropXLIB_Window, XLIB_Time aXLIB_Timestamp );
482 		void transferablesFlavorsChanged();
483 
484         void shutdown() throw();
485 
486 		// XInitialization
487 		virtual void		SAL_CALL initialize( const Sequence< Any >& arguments ) throw( ::com::sun::star::uno::Exception );
488 
489 		// XEventHandler
490 		virtual sal_Bool	SAL_CALL handleEvent( const Any& event ) throw();
491 
492 		// XDragSource
493 		virtual sal_Bool	SAL_CALL isDragImageSupported() throw();
494 		virtual sal_Int32	SAL_CALL getDefaultCursor( sal_Int8 dragAction ) throw();
495 		virtual void		SAL_CALL startDrag(
496 			const ::com::sun::star::datatransfer::dnd::DragGestureEvent& trigger,
497 			sal_Int8 sourceActions, sal_Int32 cursor, sal_Int32 image,
498 			const com::sun::star::uno::Reference< ::com::sun::star::datatransfer::XTransferable >& transferable,
499 			const com::sun::star::uno::Reference< ::com::sun::star::datatransfer::dnd::XDragSourceListener >& listener
500 			) throw();
501 
502 		// SelectionAdaptor for XdndSelection Drag (we are drag source)
503 		virtual com::sun::star::uno::Reference< ::com::sun::star::datatransfer::XTransferable > getTransferable() throw();
504 		virtual void clearTransferable() throw();
505         virtual void fireContentsChanged() throw();
506         virtual com::sun::star::uno::Reference< XInterface > getReference() throw();
507 
508         // XEventListener
509         virtual void SAL_CALL disposing( const ::com::sun::star::lang::EventObject& Source ) throw( ::com::sun::star::uno::RuntimeException );
510 
511         // XTerminateListener
512         virtual void SAL_CALL queryTermination( const ::com::sun::star::lang::EventObject& aEvent )
513                 throw( ::com::sun::star::frame::TerminationVetoException, ::com::sun::star::uno::RuntimeException );
514         virtual void SAL_CALL notifyTermination( const ::com::sun::star::lang::EventObject& aEvent )
515                 throw( ::com::sun::star::uno::RuntimeException );
516 	};
517 
518 // ------------------------------------------------------------------------
519 
520 	::com::sun::star::uno::Sequence< ::rtl::OUString > SAL_CALL Xdnd_getSupportedServiceNames();
521 	::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > SAL_CALL Xdnd_createInstance(
522 		const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory > & xMultiServiceFactory);
523 
524 	::com::sun::star::uno::Sequence< ::rtl::OUString > SAL_CALL Xdnd_dropTarget_getSupportedServiceNames();
525 	::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > SAL_CALL Xdnd_dropTarget_createInstance(
526 		const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory > & xMultiServiceFactory);
527 
528 // ------------------------------------------------------------------------
529 
530 }
531 
532 #endif
533