xref: /AOO41X/main/vcl/aqua/source/dtrans/DropTarget.cxx (revision a29d375c28feefee5f66a5e3ed841463d3388e9b) 
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21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_vcl.hxx"
26 #include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
27 #include <com/sun/star/datatransfer/XTransferable.hpp>
28 #include <com/sun/star/datatransfer/dnd/DropTargetDragEnterEvent.hpp>
29 #include <rtl/unload.h>
30 
31 #ifndef COMPHELPER_MAKESEQUENCE_HXX_INCLUDED
32 #include "comphelper/makesequence.hxx"
33 #endif
34 #include <cppuhelper/interfacecontainer.hxx>
35 
36 #include "aqua_clipboard.hxx"
37 #include "DropTarget.hxx"
38 #include "DragActionConversion.hxx"
39 
40 #include "DragSource.hxx"
41 
42 #include <rtl/ustring.h>
43 #include <stdio.h>
44 
45 #include <premac.h>
46 #include <Carbon/Carbon.h>
47 #include <postmac.h>
48 
49 #include <aqua/salframe.h>
50 #include <aqua/salframeview.h>
51 
52 using namespace rtl;
53 using namespace cppu;
54 using namespace osl;
55 using namespace com::sun::star::datatransfer;
56 using namespace com::sun::star::datatransfer::dnd;
57 using namespace com::sun::star::datatransfer::dnd::DNDConstants;
58 using namespace com::sun::star::datatransfer::clipboard;
59 using namespace com::sun::star::lang;
60 using namespace com::sun::star::uno;
61 using namespace com::sun::star;
62 using namespace comphelper;
63 
64 OUString dropTarget_getImplementationName()
65 {
66   return OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.comp.datatransfer.dnd.OleDropTarget_V1"));
67 }
68 
69 
70 Sequence<OUString> dropTarget_getSupportedServiceNames()
71 {
72   return makeSequence(OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.datatransfer.dnd.OleDropTarget")));
73 }
74 
75 
76 namespace /* private */
77 {
78   // Cocoa's coordinate system has its origin lower-left, VCL's
79   // coordinate system upper-left hence we need to transform
80   // coordinates
81 
82   inline void CocoaToVCL(NSPoint& rPoint, const NSRect& bounds)
83   {
84     rPoint.y = bounds.size.height - rPoint.y;
85   }
86 
87   inline void CocoaToVCL(NSRect& rRect, const NSRect& bounds)
88   {
89     rRect.origin.y = bounds.size.height - (rRect.origin.y + rRect.size.height);
90   }
91 }
92 
93 
94 @implementation DropTargetHelper
95 
96 
97 -(DropTargetHelper*)initWithDropTarget:(DropTarget*)pdt
98 {
99   self = [super init];
100 
101   if (self)
102     {
103       mDropTarget = pdt;
104     }
105 
106   return self;
107 }
108 
109 
110 -(NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
111 {
112   return mDropTarget->draggingEntered(sender);
113 }
114 
115 
116 -(NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender
117 {
118   return mDropTarget->draggingUpdated(sender);
119 }
120 
121 
122 -(void)draggingExited:(id <NSDraggingInfo>)sender
123 {
124   mDropTarget->draggingExited(sender);
125 }
126 
127 
128 -(BOOL)prepareForDragOperation:(id <NSDraggingInfo>)sender
129 {
130   return mDropTarget->prepareForDragOperation(sender);
131 }
132 
133 
134 -(BOOL)performDragOperation:(id <NSDraggingInfo>)sender
135 {
136   return mDropTarget->performDragOperation(sender);
137 }
138 
139 
140 -(void)concludeDragOperation:(id <NSDraggingInfo>)sender
141 {
142   mDropTarget->concludeDragOperation(sender);
143 }
144 
145 
146 @end
147 
148 
149 DropTarget::DropTarget() :
150   WeakComponentImplHelper5<XInitialization, XDropTarget, XDropTargetDragContext, XDropTargetDropContext, XServiceInfo>(m_aMutex),
151   mView(nil),
152   mpFrame(NULL),
153   mDropTargetHelper(nil),
154   mbActive(false),
155   mDragSourceSupportedActions(DNDConstants::ACTION_NONE),
156   mSelectedDropAction(DNDConstants::ACTION_NONE),
157   mDefaultActions(DNDConstants::ACTION_COPY_OR_MOVE | DNDConstants::ACTION_LINK | DNDConstants::ACTION_DEFAULT)
158 {
159   mDataFlavorMapper = DataFlavorMapperPtr_t(new DataFlavorMapper());
160 }
161 
162 
163 DropTarget::~DropTarget()
164 {
165     if( AquaSalFrame::isAlive( mpFrame ) )
166         [(id <DraggingDestinationHandler>)mView unregisterDraggingDestinationHandler:mDropTargetHelper];
167     [mDropTargetHelper release];
168 }
169 
170 
171 sal_Int8 DropTarget::determineDropAction(sal_Int8 dropActions, id sender) const
172 {
173   sal_Int8 dropAct = dropActions;
174   bool srcAndDestEqual = false;
175 
176   if ([sender draggingSource] != nil)
177     {
178       // Internal DnD
179       NSView* destView = [[sender draggingDestinationWindow] contentView];
180       srcAndDestEqual = (DragSource::g_DragSourceView == destView);
181     }
182 
183   // If ACTION_DEFAULT is set this means NSDragOperationGeneric
184   // has been set and we map this to ACTION_MOVE or ACTION_COPY
185   // depending on whether or not source and dest are equal,
186   // this hopefully satisfies all parties
187   if( (dropActions == DNDConstants::ACTION_DEFAULT)
188   || ((dropActions == mDragSourceSupportedActions)
189      && !(~mDragSourceSupportedActions & DNDConstants::ACTION_COPY_OR_MOVE ) ) )
190     {
191       dropAct = srcAndDestEqual ? DNDConstants::ACTION_MOVE :
192         DNDConstants::ACTION_COPY;
193     }
194      // if more than one drop actions have been specified
195      // set ACTION_DEFAULT in order to let the drop target
196      // decide which one to use
197   else if (dropActions != DNDConstants::ACTION_NONE &&
198            dropActions != DNDConstants::ACTION_MOVE &&
199            dropActions != DNDConstants::ACTION_COPY &&
200            dropActions != DNDConstants::ACTION_LINK)
201     {
202       if (srcAndDestEqual)
203         {
204           dropAct = dropActions;
205         }
206       else // source and destination are different
207         {
208           if (dropActions & DNDConstants::ACTION_COPY)
209             dropAct = DNDConstants::ACTION_COPY;
210           else if (dropActions & DNDConstants::ACTION_MOVE)
211             dropAct = DNDConstants::ACTION_MOVE;
212           else if (dropActions & DNDConstants::ACTION_LINK)
213             dropAct = DNDConstants::ACTION_LINK;
214         }
215 
216       dropAct |= DNDConstants::ACTION_DEFAULT;
217     }
218 
219   return dropAct;
220 }
221 
222 
223 NSDragOperation DropTarget::draggingEntered(id sender)
224 {
225   // Initially when DnD will be started no modifier key can be pressed yet
226   // thus we are getting all actions that the drag source supports, we save
227   // this value because later the system masks the drag source actions if
228   // a modifier key will be pressed
229   mDragSourceSupportedActions = SystemToOfficeDragActions([sender draggingSourceOperationMask]);
230 
231   // Only if the drop target is really interessted in the drag actions
232   // supported by the source
233   if (mDragSourceSupportedActions & mDefaultActions)
234     {
235       sal_Int8 currentAction = determineDropAction(mDragSourceSupportedActions, sender);
236 
237       NSRect bounds = [mView bounds];
238       NSPoint dragLocation = [sender draggedImageLocation];
239 
240       CocoaToVCL(dragLocation, bounds);
241 
242       sal_Int32 posX = static_cast<sal_Int32>(dragLocation.x);
243       sal_Int32 posY = static_cast<sal_Int32>(dragLocation.y);
244 
245       NSPasteboard* dragPboard = [sender draggingPasteboard];
246       mXCurrentDragClipboard = new AquaClipboard(dragPboard, false);
247 
248       uno::Reference<XTransferable> xTransferable = DragSource::g_XTransferable.is() ?
249         DragSource::g_XTransferable : mXCurrentDragClipboard->getContents();
250 
251       DropTargetDragEnterEvent dtdee(static_cast<OWeakObject*>(this),
252                                      0,
253                                      this,
254                                      currentAction,
255                                      posX,
256                                      posY,
257                                      mDragSourceSupportedActions,
258                                      xTransferable->getTransferDataFlavors());
259 
260       fire_dragEnter(dtdee);
261     }
262 
263   return OfficeToSystemDragActions(mSelectedDropAction);
264 }
265 
266 
267 NSDragOperation DropTarget::draggingUpdated(id sender)
268 {
269   sal_Int8 currentDragSourceActions =
270     SystemToOfficeDragActions([sender draggingSourceOperationMask]);
271   NSDragOperation dragOp = NSDragOperationNone;
272 
273   if (currentDragSourceActions & mDefaultActions)
274     {
275       sal_Int8 currentAction = determineDropAction(currentDragSourceActions, sender);
276       NSRect bounds = [mView bounds];
277       NSPoint dragLocation = [sender draggedImageLocation];
278 
279       CocoaToVCL(dragLocation, bounds);
280 
281       sal_Int32 posX = static_cast<sal_Int32>(dragLocation.x);
282       sal_Int32 posY = static_cast<sal_Int32>(dragLocation.y);
283 
284       DropTargetDragEvent dtde(static_cast<OWeakObject*>(this),
285                                0,
286                                this,
287                                currentAction,
288                                posX,
289                                posY,
290                                mDragSourceSupportedActions);
291 
292       fire_dragOver(dtde);
293 
294       // drag over callbacks likely have rendered something
295       [mView setNeedsDisplay: TRUE];
296 
297       dragOp = OfficeToSystemDragActions(mSelectedDropAction);
298 
299       //NSLog(@"Drag update: Source actions: %x proposed action %x selected action %x", mDragSourceSupportedActions, currentAction, mSelectedDropAction);
300     }
301 
302   if (dragOp == NSDragOperationNone)
303     [[NSCursor operationNotAllowedCursor] set];
304   else if (dragOp == NSDragOperationCopy)
305     [[NSCursor dragCopyCursor] set];
306   else
307     [[NSCursor arrowCursor] set];
308 
309   return dragOp;
310 }
311 
312 
313 void DropTarget::draggingExited(id /*sender*/)
314 {
315     DropTargetEvent dte(static_cast<OWeakObject*>(this), 0);
316     fire_dragExit(dte);
317     mDragSourceSupportedActions = DNDConstants::ACTION_NONE;
318     mSelectedDropAction = DNDConstants::ACTION_NONE;
319     [[NSCursor arrowCursor] set];
320 }
321 
322 
323 BOOL DropTarget::prepareForDragOperation(id /*sender*/)
324 {
325     return 1;
326 }
327 
328 
329 BOOL DropTarget::performDragOperation(id sender)
330 {
331   bool bSuccess = false;
332 
333   if (mSelectedDropAction != DNDConstants::ACTION_NONE)
334     {
335         uno::Reference<XTransferable> xTransferable = DragSource::g_XTransferable;
336 
337       if (!DragSource::g_XTransferable.is())
338         {
339           xTransferable = mXCurrentDragClipboard->getContents();
340         }
341 
342       NSRect bounds = [mView bounds];
343       NSPoint dragLocation = [sender draggedImageLocation];
344 
345       CocoaToVCL(dragLocation, bounds);
346 
347       sal_Int32 posX = static_cast<sal_Int32>(dragLocation.x);
348       sal_Int32 posY = static_cast<sal_Int32>(dragLocation.y);
349 
350       DropTargetDropEvent dtde(static_cast<OWeakObject*>(this),
351                                0,
352                                this,
353                                mSelectedDropAction,
354                                posX,
355                                posY,
356                                mDragSourceSupportedActions,
357                                xTransferable);
358 
359       fire_drop(dtde);
360 
361       bSuccess = true;
362     }
363 
364   return bSuccess;
365 }
366 
367 
368 void DropTarget::concludeDragOperation(id /*sender*/)
369 {
370     mDragSourceSupportedActions = DNDConstants::ACTION_NONE;
371     mSelectedDropAction = DNDConstants::ACTION_NONE;
372     mXCurrentDragClipboard = uno::Reference<XClipboard>();
373     [[NSCursor arrowCursor] set];
374 }
375 
376 
377   // called from WeakComponentImplHelperX::dispose
378   // WeakComponentImplHelper calls disposing before it destroys
379   // itself.
380   void SAL_CALL DropTarget::disposing()
381   {
382   }
383 
384 
385   void SAL_CALL DropTarget::initialize(const Sequence< Any >& aArguments)
386     throw(Exception)
387   {
388     if (aArguments.getLength() < 2)
389       {
390         throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM("DropTarget::initialize: Cannot install window event handler")),
391                                static_cast<OWeakObject*>(this));
392       }
393 
394     Any pNSView = aArguments[0];
395     sal_uInt64 tmp = 0;
396     pNSView >>= tmp;
397     mView = (id)tmp;
398     mpFrame = [(SalFrameView*)mView getSalFrame];
399 
400     mDropTargetHelper = [[DropTargetHelper alloc] initWithDropTarget: this];
401 
402     [(id <DraggingDestinationHandler>)mView registerDraggingDestinationHandler:mDropTargetHelper];
403     [mView registerForDraggedTypes: mDataFlavorMapper->getAllSupportedPboardTypes()];
404 
405     id wnd = [mView window];
406     NSWindow* parentWnd = [wnd parentWindow];
407     unsigned int topWndStyle = (NSTitledWindowMask | NSClosableWindowMask | NSResizableWindowMask);
408     unsigned int wndStyles = [wnd styleMask] & topWndStyle;
409 
410     if (parentWnd == nil && (wndStyles == topWndStyle))
411       {
412         [wnd registerDraggingDestinationHandler:mDropTargetHelper];
413         [wnd registerForDraggedTypes: [NSArray arrayWithObjects: NSFilenamesPboardType, nil]];
414       }
415   }
416 
417 
418   void SAL_CALL DropTarget::addDropTargetListener(const uno::Reference<XDropTargetListener>& dtl)
419     throw(RuntimeException)
420   {
421     rBHelper.addListener(::getCppuType(&dtl), dtl);
422   }
423 
424 
425   void SAL_CALL DropTarget::removeDropTargetListener(const uno::Reference<XDropTargetListener>& dtl)
426     throw(RuntimeException)
427   {
428     rBHelper.removeListener(::getCppuType(&dtl), dtl);
429   }
430 
431 
432   sal_Bool SAL_CALL DropTarget::isActive(  ) throw(RuntimeException)
433   {
434     return mbActive;
435   }
436 
437 
438   void SAL_CALL DropTarget::setActive(sal_Bool active) throw(RuntimeException)
439   {
440     mbActive = active;
441   }
442 
443 
444   sal_Int8 SAL_CALL DropTarget::getDefaultActions() throw(RuntimeException)
445   {
446     return mDefaultActions;
447   }
448 
449 
450   void SAL_CALL DropTarget::setDefaultActions(sal_Int8 actions) throw(RuntimeException)
451   {
452     OSL_ENSURE( actions < 8, "No valid default actions");
453     mDefaultActions= actions;
454   }
455 
456 
457   // XDropTargetDragContext
458 
459   void SAL_CALL DropTarget::acceptDrag(sal_Int8 dragOperation) throw (RuntimeException)
460   {
461     mSelectedDropAction = dragOperation;
462   }
463 
464 
465   void SAL_CALL DropTarget::rejectDrag() throw (RuntimeException)
466   {
467     mSelectedDropAction = DNDConstants::ACTION_NONE;
468   }
469 
470 
471   //XDropTargetDropContext
472 
473   void SAL_CALL DropTarget::acceptDrop(sal_Int8 dropOperation) throw( RuntimeException)
474   {
475     mSelectedDropAction = dropOperation;
476   }
477 
478 
479   void SAL_CALL DropTarget::rejectDrop() throw (RuntimeException)
480   {
481     mSelectedDropAction = DNDConstants::ACTION_NONE;
482   }
483 
484 
485   void SAL_CALL DropTarget::dropComplete(sal_Bool success) throw (RuntimeException)
486   {
487     // Reset the internal transferable used as shortcut in case this is
488     // an internal D&D operation
489     DragSource::g_XTransferable = uno::Reference<XTransferable>();
490     DragSource::g_DropSuccessSet = true;
491     DragSource::g_DropSuccess = success;
492   }
493 
494 
495   void DropTarget::fire_drop( const DropTargetDropEvent& dte)
496   {
497       OInterfaceContainerHelper* pContainer= rBHelper.getContainer( getCppuType( (uno::Reference<XDropTargetListener>* )0 ) );
498     if( pContainer)
499       {
500         OInterfaceIteratorHelper iter( *pContainer);
501         while( iter.hasMoreElements())
502           {
503               uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
504 
505             try { listener->drop( dte); }
506             catch(RuntimeException&) {}
507           }
508       }
509   }
510 
511 
512   void DropTarget::fire_dragEnter(const DropTargetDragEnterEvent& e)
513   {
514       OInterfaceContainerHelper* pContainer= rBHelper.getContainer( getCppuType( (uno::Reference<XDropTargetListener>* )0 ) );
515     if( pContainer)
516       {
517         OInterfaceIteratorHelper iter( *pContainer);
518         while( iter.hasMoreElements())
519           {
520               uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
521 
522             try { listener->dragEnter( e); }
523             catch (RuntimeException&) {}
524           }
525       }
526   }
527 
528 
529   void DropTarget::fire_dragExit(const DropTargetEvent& dte)
530   {
531       OInterfaceContainerHelper* pContainer= rBHelper.getContainer( getCppuType( (uno::Reference<XDropTargetListener>* )0 ) );
532 
533     if( pContainer)
534       {
535         OInterfaceIteratorHelper iter( *pContainer);
536         while( iter.hasMoreElements())
537           {
538               uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
539 
540             try { listener->dragExit( dte); }
541             catch (RuntimeException&) {}
542           }
543       }
544   }
545 
546 
547   void DropTarget::fire_dragOver(const DropTargetDragEvent& dtde)
548   {
549       OInterfaceContainerHelper* pContainer= rBHelper.getContainer( getCppuType( (uno::Reference<XDropTargetListener>* )0 ) );
550     if( pContainer)
551       {
552         OInterfaceIteratorHelper iter( *pContainer );
553         while( iter.hasMoreElements())
554           {
555               uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
556 
557             try { listener->dragOver( dtde); }
558             catch (RuntimeException&) {}
559           }
560       }
561   }
562 
563 
564   void DropTarget::fire_dropActionChanged(const DropTargetDragEvent& dtde)
565   {
566       OInterfaceContainerHelper* pContainer= rBHelper.getContainer( getCppuType( (uno::Reference<XDropTargetListener>* )0 ) );
567     if( pContainer)
568       {
569         OInterfaceIteratorHelper iter( *pContainer);
570         while( iter.hasMoreElements())
571           {
572               uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
573 
574             try { listener->dropActionChanged( dtde); }
575             catch (RuntimeException&) {}
576           }
577       }
578   }
579 
580 
581   // XServiceInfo
582 
583   OUString SAL_CALL DropTarget::getImplementationName() throw (RuntimeException)
584   {
585     return dropTarget_getImplementationName();
586   }
587 
588 
589   sal_Bool SAL_CALL DropTarget::supportsService( const OUString& ServiceName ) throw (RuntimeException)
590   {
591     return ServiceName.equals(OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.datatransfer.dnd.OleDropTarget")));
592   }
593 
594 
595   Sequence< OUString > SAL_CALL DropTarget::getSupportedServiceNames(  ) throw (RuntimeException)
596   {
597     return dropTarget_getSupportedServiceNames();
598   }
599 
600