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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <sal/config.h>
21 :
22 : #include <cassert>
23 :
24 : #include "ChildrenManagerImpl.hxx"
25 : #include <svx/ShapeTypeHandler.hxx>
26 : #include <svx/AccessibleShapeInfo.hxx>
27 : #include <vcl/svapp.hxx>
28 : #include <com/sun/star/accessibility/AccessibleStateType.hpp>
29 : #include <com/sun/star/view/XSelectionSupplier.hpp>
30 : #include <com/sun/star/container/XChild.hpp>
31 : #include <comphelper/uno3.hxx>
32 :
33 : #include <rtl/ustring.hxx>
34 : #include <tools/debug.hxx>
35 : #include <svx/SvxShapeTypes.hxx>
36 : #include <vcl/window.hxx>
37 :
38 : using namespace ::com::sun::star;
39 : using namespace ::com::sun::star::accessibility;
40 : using ::com::sun::star::uno::Reference;
41 :
42 : namespace accessibility {
43 :
44 : namespace
45 : {
46 0 : void adjustIndexInParentOfShapes(ChildDescriptorListType& _rList)
47 : {
48 0 : ChildDescriptorListType::iterator aEnd = _rList.end();
49 0 : sal_Int32 i=0;
50 0 : for ( ChildDescriptorListType::iterator aIter = _rList.begin(); aIter != aEnd; ++aIter,++i)
51 0 : aIter->setIndexAtAccessibleShape(i);
52 0 : }
53 : }
54 :
55 : //===== AccessibleChildrenManager ===========================================
56 :
57 0 : ChildrenManagerImpl::ChildrenManagerImpl (
58 : const uno::Reference<XAccessible>& rxParent,
59 : const uno::Reference<drawing::XShapes>& rxShapeList,
60 : const AccessibleShapeTreeInfo& rShapeTreeInfo,
61 : AccessibleContextBase& rContext)
62 : : ::cppu::WeakComponentImplHelper2<
63 : ::com::sun::star::document::XEventListener,
64 : ::com::sun::star::view::XSelectionChangeListener>(maMutex),
65 : mxShapeList (rxShapeList),
66 : mxParent (rxParent),
67 : maShapeTreeInfo (rShapeTreeInfo),
68 : mrContext (rContext),
69 : mnNewNameIndex(1),
70 0 : mpFocusedShape(NULL)
71 : {
72 0 : }
73 :
74 :
75 :
76 :
77 0 : ChildrenManagerImpl::~ChildrenManagerImpl (void)
78 : {
79 : DBG_ASSERT (rBHelper.bDisposed || rBHelper.bInDispose,
80 : "~AccessibleDrawDocumentView: object has not been disposed");
81 0 : }
82 :
83 :
84 :
85 :
86 0 : void ChildrenManagerImpl::Init (void)
87 : {
88 : // Register as view::XSelectionChangeListener.
89 0 : Reference<frame::XController> xController(maShapeTreeInfo.GetController());
90 : Reference<view::XSelectionSupplier> xSelectionSupplier (
91 0 : xController, uno::UNO_QUERY);
92 0 : if (xSelectionSupplier.is())
93 : {
94 0 : xController->addEventListener(
95 0 : static_cast<document::XEventListener*>(this));
96 :
97 0 : xSelectionSupplier->addSelectionChangeListener (
98 0 : static_cast<view::XSelectionChangeListener*>(this));
99 : }
100 :
101 : // Register at model as document::XEventListener.
102 0 : if (maShapeTreeInfo.GetModelBroadcaster().is())
103 0 : maShapeTreeInfo.GetModelBroadcaster()->addEventListener (
104 0 : static_cast<document::XEventListener*>(this));
105 0 : }
106 :
107 :
108 :
109 :
110 0 : long ChildrenManagerImpl::GetChildCount (void) const throw ()
111 : {
112 0 : return maVisibleChildren.size();
113 : }
114 :
115 :
116 : ::com::sun::star::uno::Reference<
117 0 : ::com::sun::star::drawing::XShape> ChildrenManagerImpl::GetChildShape(long nIndex)
118 : throw (::com::sun::star::uno::RuntimeException,
119 : ::com::sun::star::lang::IndexOutOfBoundsException)
120 : {
121 0 : uno::Reference<XAccessible> xAcc = GetChild(nIndex);
122 0 : ChildDescriptorListType::iterator I, aEnd = maVisibleChildren.end();
123 0 : for (I = maVisibleChildren.begin(); I != aEnd; ++I)
124 : {
125 0 : if (I->mxAccessibleShape == xAcc)
126 0 : return I->mxShape;
127 : }
128 0 : return uno::Reference< drawing::XShape > ();
129 : }
130 :
131 : /** Return the requested accessible child object. Create it if it is not
132 : yet in the cache.
133 : */
134 : uno::Reference<XAccessible>
135 0 : ChildrenManagerImpl::GetChild (long nIndex)
136 : throw (::com::sun::star::uno::RuntimeException,
137 : ::com::sun::star::lang::IndexOutOfBoundsException)
138 : {
139 : // Check whether the given index is valid.
140 0 : if (nIndex < 0 || (unsigned long)nIndex >= maVisibleChildren.size())
141 : throw lang::IndexOutOfBoundsException (
142 0 : "no accessible child with index " + OUString::number(nIndex),
143 0 : mxParent);
144 :
145 0 : return GetChild (maVisibleChildren[nIndex],nIndex);
146 : }
147 :
148 :
149 :
150 :
151 : /** Return the requested accessible child object. Create it if it is not
152 : yet in the cache.
153 : */
154 : uno::Reference<XAccessible>
155 0 : ChildrenManagerImpl::GetChild (ChildDescriptor& rChildDescriptor,sal_Int32 _nIndex)
156 : throw (::com::sun::star::uno::RuntimeException)
157 : {
158 0 : if ( ! rChildDescriptor.mxAccessibleShape.is())
159 : {
160 0 : SolarMutexGuard g;
161 : // Make sure that the requested accessible object has not been
162 : // created while locking the global mutex.
163 0 : if ( ! rChildDescriptor.mxAccessibleShape.is())
164 : {
165 : AccessibleShapeInfo aShapeInfo(
166 : rChildDescriptor.mxShape,
167 : mxParent,
168 : this,
169 0 : mnNewNameIndex++);
170 : // Create accessible object that corresponds to the descriptor's
171 : // shape.
172 : AccessibleShape* pShape =
173 0 : ShapeTypeHandler::Instance().CreateAccessibleObject (
174 : aShapeInfo,
175 0 : maShapeTreeInfo);
176 0 : rChildDescriptor.mxAccessibleShape = uno::Reference<XAccessible> (
177 : static_cast<uno::XWeak*>(pShape),
178 0 : uno::UNO_QUERY);
179 : // Now that there is a reference to the new accessible shape we
180 : // can safely call its Init() method.
181 0 : if ( pShape != NULL )
182 : {
183 0 : pShape->Init();
184 0 : pShape->setIndexInParent(_nIndex);
185 0 : }
186 0 : }
187 : }
188 :
189 0 : return rChildDescriptor.mxAccessibleShape;
190 : }
191 :
192 :
193 :
194 :
195 : uno::Reference<XAccessible>
196 0 : ChildrenManagerImpl::GetChild (const uno::Reference<drawing::XShape>& xShape)
197 : throw (uno::RuntimeException)
198 : {
199 0 : ChildDescriptorListType::iterator I, aEnd = maVisibleChildren.end();
200 0 : for (I = maVisibleChildren.begin(); I != aEnd; ++I)
201 : {
202 0 : if ( I->mxShape.get() == xShape.get() )
203 0 : return I->mxAccessibleShape;
204 : }
205 0 : return uno::Reference<XAccessible> ();
206 : }
207 :
208 :
209 :
210 :
211 : /** Find all shapes among the specified shapes that lie fully or partially
212 : inside the visible area. Put those shapes into the cleared cache. The
213 : corresponding accessible objects will be created on demand.
214 :
215 : At the moment, first all accessible objects are removed from the cache
216 : and the appropriate listeners are informed of this. Next, the list is
217 : created again. This should be optimized in the future to not remove and
218 : create objects that will be in the list before and after the update
219 : method.
220 : */
221 0 : void ChildrenManagerImpl::Update (bool bCreateNewObjectsOnDemand)
222 : {
223 0 : if (maShapeTreeInfo.GetViewForwarder() == NULL)
224 0 : return;
225 0 : Rectangle aVisibleArea = maShapeTreeInfo.GetViewForwarder()->GetVisibleArea();
226 :
227 : // 1. Create a local list of visible shapes.
228 0 : ChildDescriptorListType aChildList;
229 0 : CreateListOfVisibleShapes (aChildList);
230 :
231 : // 2. Merge the information that is already known about the visible
232 : // shapes from the current list into the new list.
233 0 : MergeAccessibilityInformation (aChildList);
234 :
235 : // 3. Replace the current list of visible shapes with the new one. Do
236 : // the same with the visible area.
237 : {
238 0 : SolarMutexGuard g;
239 0 : adjustIndexInParentOfShapes(aChildList);
240 :
241 : // Use swap to copy the contents of the new list in constant time.
242 0 : maVisibleChildren.swap (aChildList);
243 :
244 : // aChildList now contains all the old children, while maVisibleChildren
245 : // contains all the current children
246 :
247 : // 4. Find all shapes in the old list that are not in the current list,
248 : // send appropriate events and remove the accessible shape.
249 :
250 : // Do this *after* we have set our new list of children, because
251 : // removing a child may cause
252 :
253 : // ChildDescriptor::disposeAccessibleObject -->
254 : // AccessibleContextBase::CommitChange -->
255 : // AtkListener::notifyEvent ->
256 : // AtkListener::handleChildRemoved ->
257 : // AtkListener::updateChildList
258 : // AccessibleDrawDocumentView::getAccessibleChildCount ->
259 : // ChildrenManagerImpl::GetChildCount ->
260 : // maVisibleChildren.size()
261 :
262 : // to be fired, and so the operations will take place on
263 : // the list we are trying to replace
264 :
265 0 : RemoveNonVisibleChildren (maVisibleChildren, aChildList);
266 :
267 0 : aChildList.clear();
268 :
269 0 : maVisibleArea = aVisibleArea;
270 : }
271 :
272 : // 5. If the visible area has changed then send events that signal a
273 : // change of their bounding boxes for all shapes that are members of
274 : // both the current and the new list of visible shapes.
275 0 : if (maVisibleArea != aVisibleArea)
276 0 : SendVisibleAreaEvents (maVisibleChildren);
277 :
278 : // 6. If children have to be created immediately and not on demand then
279 : // create the missing accessible objects now.
280 0 : if ( ! bCreateNewObjectsOnDemand)
281 0 : CreateAccessibilityObjects (maVisibleChildren);
282 : }
283 :
284 :
285 :
286 :
287 0 : void ChildrenManagerImpl::CreateListOfVisibleShapes (
288 : ChildDescriptorListType& raDescriptorList)
289 : {
290 0 : SolarMutexGuard g;
291 :
292 : OSL_ASSERT (maShapeTreeInfo.GetViewForwarder() != NULL);
293 :
294 0 : Rectangle aVisibleArea = maShapeTreeInfo.GetViewForwarder()->GetVisibleArea();
295 :
296 : // Add the visible shapes for which the accessible objects already exist.
297 0 : AccessibleShapeList::iterator I,aEnd = maAccessibleShapes.end();
298 0 : for (I=maAccessibleShapes.begin(); I != aEnd; ++I)
299 : {
300 0 : if (I->is())
301 : {
302 : uno::Reference<XAccessibleComponent> xComponent (
303 0 : (*I)->getAccessibleContext(), uno::UNO_QUERY);
304 0 : if (xComponent.is())
305 : {
306 : // The bounding box of the object already is clipped to the
307 : // visible area. The object is therefore visible if the
308 : // bounding box has non-zero extensions.
309 0 : awt::Rectangle aPixelBBox (xComponent->getBounds());
310 0 : if ((aPixelBBox.Width > 0) && (aPixelBBox.Height > 0))
311 0 : raDescriptorList.push_back (ChildDescriptor (*I));
312 0 : }
313 : }
314 : }
315 :
316 : // Add the visible shapes for which only the XShapes exist.
317 0 : uno::Reference<container::XIndexAccess> xShapeAccess (mxShapeList, uno::UNO_QUERY);
318 0 : if (xShapeAccess.is())
319 : {
320 0 : sal_Int32 nShapeCount = xShapeAccess->getCount();
321 0 : raDescriptorList.reserve( nShapeCount );
322 0 : awt::Point aPos;
323 0 : awt::Size aSize;
324 0 : Rectangle aBoundingBox;
325 0 : uno::Reference<drawing::XShape> xShape;
326 0 : for (sal_Int32 i=0; i<nShapeCount; ++i)
327 : {
328 0 : xShapeAccess->getByIndex(i) >>= xShape;
329 0 : aPos = xShape->getPosition();
330 0 : aSize = xShape->getSize();
331 :
332 0 : aBoundingBox.Left() = aPos.X;
333 0 : aBoundingBox.Top() = aPos.Y;
334 0 : aBoundingBox.Right() = aPos.X + aSize.Width;
335 0 : aBoundingBox.Bottom() = aPos.Y + aSize.Height;
336 :
337 : // Insert shape if it is visible, i.e. its bounding box overlaps
338 : // the visible area.
339 0 : if ( aBoundingBox.IsOver (aVisibleArea) )
340 0 : raDescriptorList.push_back (ChildDescriptor (xShape));
341 0 : }
342 0 : }
343 0 : }
344 :
345 :
346 :
347 :
348 0 : void ChildrenManagerImpl::RemoveNonVisibleChildren (
349 : const ChildDescriptorListType& rNewChildList,
350 : ChildDescriptorListType& rOldChildList)
351 : {
352 : // Iterate over list of formerly visible children and remove those that
353 : // are not visible anymore, i.e. member of the new list of visible
354 : // children.
355 0 : ChildDescriptorListType::iterator I, aEnd = rOldChildList.end();
356 0 : for (I=rOldChildList.begin(); I != aEnd; ++I)
357 : {
358 0 : if (::std::find(rNewChildList.begin(), rNewChildList.end(), *I) == rNewChildList.end())
359 : {
360 : // The child is disposed when there is a UNO shape from which
361 : // the accessible shape can be created when the shape becomes
362 : // visible again. When there is no such UNO shape then simply
363 : // reset the descriptor but keep the accessibility object.
364 0 : if (I->mxShape.is())
365 : {
366 0 : UnregisterAsDisposeListener (I->mxShape);
367 0 : I->disposeAccessibleObject (mrContext);
368 : }
369 : else
370 : {
371 0 : AccessibleShape* pAccessibleShape = I->GetAccessibleShape();
372 0 : pAccessibleShape->ResetState (AccessibleStateType::VISIBLE);
373 0 : I->mxAccessibleShape = NULL;
374 : }
375 : }
376 : }
377 0 : }
378 :
379 :
380 :
381 :
382 0 : void ChildrenManagerImpl::MergeAccessibilityInformation (
383 : ChildDescriptorListType& raNewChildList)
384 : {
385 0 : ChildDescriptorListType::iterator aOldChildDescriptor;
386 0 : ChildDescriptorListType::iterator I, aEnd = raNewChildList.end();
387 0 : for (I=raNewChildList.begin(); I != aEnd; ++I)
388 : {
389 0 : aOldChildDescriptor = ::std::find (maVisibleChildren.begin(), maVisibleChildren.end(), *I);
390 :
391 : // Copy accessible shape if that exists in the old descriptor.
392 0 : bool bRegistrationIsNecessary = true;
393 0 : if (aOldChildDescriptor != maVisibleChildren.end())
394 0 : if (aOldChildDescriptor->mxAccessibleShape.is())
395 : {
396 0 : I->mxAccessibleShape = aOldChildDescriptor->mxAccessibleShape;
397 0 : I->mbCreateEventPending = false;
398 0 : bRegistrationIsNecessary = false;
399 : }
400 0 : if (bRegistrationIsNecessary)
401 0 : RegisterAsDisposeListener (I->mxShape);
402 : }
403 0 : }
404 :
405 :
406 :
407 :
408 0 : void ChildrenManagerImpl::SendVisibleAreaEvents (
409 : ChildDescriptorListType& raNewChildList)
410 : {
411 0 : ChildDescriptorListType::iterator I,aEnd = raNewChildList.end();
412 0 : for (I=raNewChildList.begin(); I != aEnd; ++I)
413 : {
414 : // Tell shape of changed visible area. To do this, fake a
415 : // change of the view forwarder. (Actually we usually get here
416 : // as a result of a change of the view forwarder).
417 0 : AccessibleShape* pShape = I->GetAccessibleShape ();
418 0 : if (pShape != NULL)
419 : pShape->ViewForwarderChanged (
420 : IAccessibleViewForwarderListener::VISIBLE_AREA,
421 0 : maShapeTreeInfo.GetViewForwarder());
422 : }
423 0 : }
424 :
425 :
426 :
427 :
428 0 : void ChildrenManagerImpl::CreateAccessibilityObjects (
429 : ChildDescriptorListType& raNewChildList)
430 : {
431 0 : ChildDescriptorListType::iterator I, aEnd = raNewChildList.end();
432 0 : sal_Int32 nPos = 0;
433 0 : for ( I = raNewChildList.begin(); I != aEnd; ++I,++nPos)
434 : {
435 : // Create the associated accessible object when the flag says so and
436 : // it does not yet exist.
437 0 : if ( ! I->mxAccessibleShape.is() )
438 0 : GetChild (*I,nPos);
439 0 : if (I->mxAccessibleShape.is() && I->mbCreateEventPending)
440 : {
441 0 : I->mbCreateEventPending = false;
442 : mrContext.CommitChange (
443 : AccessibleEventId::CHILD,
444 0 : uno::makeAny(I->mxAccessibleShape),
445 0 : uno::Any());
446 : }
447 : }
448 0 : }
449 :
450 :
451 :
452 :
453 0 : void ChildrenManagerImpl::AddShape (const Reference<drawing::XShape>& rxShape)
454 : {
455 0 : if (rxShape.is())
456 : {
457 0 : SolarMutexClearableGuard aGuard;
458 :
459 : // Test visibility of the shape.
460 0 : Rectangle aVisibleArea = maShapeTreeInfo.GetViewForwarder()->GetVisibleArea();
461 0 : awt::Point aPos = rxShape->getPosition();
462 0 : awt::Size aSize = rxShape->getSize();
463 :
464 : Rectangle aBoundingBox (
465 : aPos.X,
466 : aPos.Y,
467 : aPos.X + aSize.Width,
468 0 : aPos.Y + aSize.Height);
469 :
470 : // Add the shape only when it belongs to the list of shapes stored
471 : // in mxShapeList (which is either a page or a group shape).
472 0 : Reference<container::XChild> xChild (rxShape, uno::UNO_QUERY);
473 0 : if (xChild.is())
474 : {
475 0 : Reference<drawing::XShapes> xParent (xChild->getParent(), uno::UNO_QUERY);
476 0 : if (xParent == mxShapeList)
477 0 : if (aBoundingBox.IsOver (aVisibleArea))
478 : {
479 : // Add shape to list of visible shapes.
480 0 : maVisibleChildren.push_back (ChildDescriptor (rxShape));
481 :
482 : // Create accessibility object.
483 0 : ChildDescriptor& rDescriptor = maVisibleChildren.back();
484 0 : GetChild (rDescriptor, maVisibleChildren.size()-1);
485 :
486 : // Inform listeners about new child.
487 0 : uno::Any aNewShape;
488 0 : aNewShape <<= rDescriptor.mxAccessibleShape;
489 0 : aGuard.clear();
490 : mrContext.CommitChange (
491 : AccessibleEventId::CHILD,
492 : aNewShape,
493 0 : uno::Any());
494 0 : RegisterAsDisposeListener(rxShape);
495 0 : }
496 0 : }
497 : }
498 0 : }
499 :
500 :
501 :
502 :
503 0 : void ChildrenManagerImpl::RemoveShape (const Reference<drawing::XShape>& rxShape)
504 : {
505 0 : if (rxShape.is())
506 : {
507 0 : SolarMutexGuard g;
508 :
509 : // Search shape in list of visible children.
510 : ChildDescriptorListType::iterator I (
511 : ::std::find (maVisibleChildren.begin(), maVisibleChildren.end(),
512 0 : ChildDescriptor (rxShape)));
513 0 : if (I != maVisibleChildren.end())
514 : {
515 : // Remove descriptor from that list.
516 0 : Reference<XAccessible> xAccessibleShape (I->mxAccessibleShape);
517 :
518 0 : UnregisterAsDisposeListener (I->mxShape);
519 : // Dispose the accessible object.
520 0 : I->disposeAccessibleObject (mrContext);
521 :
522 : // Now we can safely remove the child descriptor and thus
523 : // invalidate the iterator.
524 0 : maVisibleChildren.erase (I);
525 :
526 0 : adjustIndexInParentOfShapes(maVisibleChildren);
527 0 : }
528 : }
529 0 : }
530 :
531 :
532 :
533 :
534 0 : void ChildrenManagerImpl::SetShapeList (const ::com::sun::star::uno::Reference<
535 : ::com::sun::star::drawing::XShapes>& xShapeList)
536 : {
537 0 : mxShapeList = xShapeList;
538 0 : }
539 :
540 :
541 :
542 :
543 0 : void ChildrenManagerImpl::AddAccessibleShape (css::uno::Reference<css::accessibility::XAccessible> const & shape)
544 : {
545 : assert(shape.is());
546 0 : maAccessibleShapes.push_back (shape);
547 0 : }
548 :
549 :
550 :
551 :
552 0 : void ChildrenManagerImpl::ClearAccessibleShapeList (void)
553 : {
554 : // Copy the list of (visible) shapes to local lists and clear the
555 : // originals.
556 0 : ChildDescriptorListType aLocalVisibleChildren;
557 0 : aLocalVisibleChildren.swap(maVisibleChildren);
558 0 : AccessibleShapeList aLocalAccessibleShapes;
559 0 : aLocalAccessibleShapes.swap(maAccessibleShapes);
560 :
561 : // Tell the listeners that all children are gone.
562 : mrContext.CommitChange (
563 : AccessibleEventId::INVALIDATE_ALL_CHILDREN,
564 : uno::Any(),
565 0 : uno::Any());
566 :
567 : // There are no accessible shapes left so the index assigned to new
568 : // accessible shapes can be reset.
569 0 : mnNewNameIndex = 1;
570 :
571 : // Now the objects in the local lists can be safely disposed without
572 : // having problems with callers that want to update their child lists.
573 :
574 : // Clear the list of visible accessible objects. Objects not created on
575 : // demand for XShapes are treated below.
576 0 : ChildDescriptorListType::iterator I,aEnd = aLocalVisibleChildren.end();
577 0 : for (I=aLocalVisibleChildren.begin(); I != aEnd; ++I)
578 0 : if ( I->mxAccessibleShape.is() && I->mxShape.is() )
579 : {
580 0 : ::comphelper::disposeComponent(I->mxAccessibleShape);
581 0 : I->mxAccessibleShape = NULL;
582 : }
583 :
584 : // Dispose all objects in the accessible shape list.
585 0 : AccessibleShapeList::iterator J,aEnd2 = aLocalAccessibleShapes.end();
586 0 : for (J=aLocalAccessibleShapes.begin(); J != aEnd2; ++J)
587 0 : if (J->is())
588 : {
589 : // Dispose the object.
590 0 : ::comphelper::disposeComponent(*J);
591 0 : *J = NULL;
592 0 : }
593 0 : }
594 :
595 :
596 :
597 :
598 : /** If the broadcasters change at which this object is registered then
599 : unregister at old and register at new broadcasters.
600 : */
601 0 : void ChildrenManagerImpl::SetInfo (const AccessibleShapeTreeInfo& rShapeTreeInfo)
602 : {
603 : // Remember the current broadcasters and exchange the shape tree info.
604 0 : Reference<document::XEventBroadcaster> xCurrentBroadcaster;
605 0 : Reference<frame::XController> xCurrentController;
606 0 : Reference<view::XSelectionSupplier> xCurrentSelectionSupplier;
607 : {
608 0 : SolarMutexGuard g;
609 0 : xCurrentBroadcaster = maShapeTreeInfo.GetModelBroadcaster();
610 0 : xCurrentController = maShapeTreeInfo.GetController();
611 0 : xCurrentSelectionSupplier = Reference<view::XSelectionSupplier> (
612 0 : xCurrentController, uno::UNO_QUERY);
613 0 : maShapeTreeInfo = rShapeTreeInfo;
614 : }
615 :
616 : // Move registration to new model.
617 0 : if (maShapeTreeInfo.GetModelBroadcaster() != xCurrentBroadcaster)
618 : {
619 : // Register at new broadcaster.
620 0 : if (maShapeTreeInfo.GetModelBroadcaster().is())
621 0 : maShapeTreeInfo.GetModelBroadcaster()->addEventListener (
622 0 : static_cast<document::XEventListener*>(this));
623 :
624 : // Unregister at old broadcaster.
625 0 : if (xCurrentBroadcaster.is())
626 0 : xCurrentBroadcaster->removeEventListener (
627 0 : static_cast<document::XEventListener*>(this));
628 : }
629 :
630 : // Move registration to new selection supplier.
631 0 : Reference<frame::XController> xNewController(maShapeTreeInfo.GetController());
632 : Reference<view::XSelectionSupplier> xNewSelectionSupplier (
633 0 : xNewController, uno::UNO_QUERY);
634 0 : if (xNewSelectionSupplier != xCurrentSelectionSupplier)
635 : {
636 : // Register at new broadcaster.
637 0 : if (xNewSelectionSupplier.is())
638 : {
639 0 : xNewController->addEventListener(
640 0 : static_cast<document::XEventListener*>(this));
641 :
642 0 : xNewSelectionSupplier->addSelectionChangeListener (
643 0 : static_cast<view::XSelectionChangeListener*>(this));
644 : }
645 :
646 : // Unregister at old broadcaster.
647 0 : if (xCurrentSelectionSupplier.is())
648 : {
649 0 : xCurrentSelectionSupplier->removeSelectionChangeListener (
650 0 : static_cast<view::XSelectionChangeListener*>(this));
651 :
652 0 : xCurrentController->removeEventListener(
653 0 : static_cast<document::XEventListener*>(this));
654 : }
655 0 : }
656 0 : }
657 :
658 :
659 :
660 :
661 : //===== lang::XEventListener ================================================
662 :
663 : void SAL_CALL
664 0 : ChildrenManagerImpl::disposing (const lang::EventObject& rEventObject)
665 : throw (uno::RuntimeException, std::exception)
666 : {
667 0 : if (rEventObject.Source == maShapeTreeInfo.GetModelBroadcaster()
668 0 : || rEventObject.Source == maShapeTreeInfo.GetController())
669 : {
670 0 : impl_dispose();
671 : }
672 :
673 : // Handle disposing UNO shapes.
674 : else
675 : {
676 0 : Reference<drawing::XShape> xShape (rEventObject.Source, uno::UNO_QUERY);
677 :
678 : // Find the descriptor for the given shape.
679 : ChildDescriptorListType::iterator I (
680 : ::std::find (maVisibleChildren.begin(), maVisibleChildren.end(),
681 0 : ChildDescriptor (xShape)));
682 0 : if (I != maVisibleChildren.end())
683 : {
684 : // Clear the descriptor.
685 0 : I->disposeAccessibleObject (mrContext);
686 0 : I->mxShape = NULL;
687 0 : }
688 : }
689 0 : }
690 :
691 :
692 :
693 :
694 : //===== document::XEventListener ============================================
695 :
696 : /** Listen for new and removed shapes.
697 : */
698 : void SAL_CALL
699 0 : ChildrenManagerImpl::notifyEvent (
700 : const document::EventObject& rEventObject)
701 : throw (uno::RuntimeException, std::exception)
702 : {
703 0 : static const OUString sShapeInserted ("ShapeInserted");
704 0 : static const OUString sShapeRemoved ("ShapeRemoved");
705 :
706 :
707 0 : if (rEventObject.EventName == sShapeInserted)
708 0 : AddShape (Reference<drawing::XShape>(rEventObject.Source, uno::UNO_QUERY));
709 0 : else if (rEventObject.EventName == sShapeRemoved)
710 0 : RemoveShape (Reference<drawing::XShape>(rEventObject.Source, uno::UNO_QUERY));
711 : // else ignore unknown event.
712 0 : }
713 :
714 :
715 :
716 :
717 : //===== view::XSelectionChangeListener ======================================
718 :
719 : void SAL_CALL
720 0 : ChildrenManagerImpl::selectionChanged (const lang::EventObject& /*rEvent*/)
721 : throw (uno::RuntimeException, std::exception)
722 : {
723 0 : UpdateSelection ();
724 0 : }
725 :
726 :
727 :
728 :
729 0 : void ChildrenManagerImpl::impl_dispose (void)
730 : {
731 0 : Reference<frame::XController> xController(maShapeTreeInfo.GetController());
732 : // Remove from broadcasters.
733 : try
734 : {
735 : Reference<view::XSelectionSupplier> xSelectionSupplier (
736 0 : xController, uno::UNO_QUERY);
737 0 : if (xSelectionSupplier.is())
738 : {
739 0 : xSelectionSupplier->removeSelectionChangeListener (
740 0 : static_cast<view::XSelectionChangeListener*>(this));
741 0 : }
742 : }
743 0 : catch( uno::RuntimeException&)
744 : {}
745 :
746 : try
747 : {
748 0 : if (xController.is())
749 0 : xController->removeEventListener(
750 0 : static_cast<document::XEventListener*>(this));
751 : }
752 0 : catch( uno::RuntimeException&)
753 : {}
754 :
755 0 : maShapeTreeInfo.SetController (NULL);
756 :
757 : try
758 : {
759 : // Remove from broadcaster.
760 0 : if (maShapeTreeInfo.GetModelBroadcaster().is())
761 0 : maShapeTreeInfo.GetModelBroadcaster()->removeEventListener (
762 0 : static_cast<document::XEventListener*>(this));
763 0 : maShapeTreeInfo.SetModelBroadcaster (NULL);
764 : }
765 0 : catch( uno::RuntimeException& )
766 : {}
767 :
768 0 : ClearAccessibleShapeList ();
769 0 : SetShapeList (NULL);
770 0 : }
771 :
772 :
773 :
774 0 : void SAL_CALL ChildrenManagerImpl::disposing (void)
775 : {
776 0 : impl_dispose();
777 0 : }
778 :
779 : //===== IAccessibleViewForwarderListener ====================================
780 :
781 0 : void ChildrenManagerImpl::ViewForwarderChanged (ChangeType aChangeType,
782 : const IAccessibleViewForwarder* pViewForwarder)
783 : {
784 0 : if (aChangeType == IAccessibleViewForwarderListener::VISIBLE_AREA)
785 0 : Update (false);
786 : else
787 : {
788 0 : SolarMutexGuard g;
789 0 : ChildDescriptorListType::iterator I, aEnd = maVisibleChildren.end();
790 0 : for (I=maVisibleChildren.begin(); I != aEnd; ++I)
791 : {
792 0 : AccessibleShape* pShape = I->GetAccessibleShape();
793 0 : if (pShape != NULL)
794 0 : pShape->ViewForwarderChanged (aChangeType, pViewForwarder);
795 0 : }
796 : }
797 0 : }
798 :
799 :
800 :
801 :
802 : //===== IAccessibleParent ===================================================
803 :
804 0 : bool ChildrenManagerImpl::ReplaceChild (
805 : AccessibleShape* pCurrentChild,
806 : const ::com::sun::star::uno::Reference< ::com::sun::star::drawing::XShape >& _rxShape,
807 : const long _nIndex,
808 : const AccessibleShapeTreeInfo& _rShapeTreeInfo)
809 : throw (uno::RuntimeException)
810 : {
811 0 : AccessibleShapeInfo aShapeInfo( _rxShape, pCurrentChild->getAccessibleParent(), this, _nIndex );
812 : // create the new child
813 0 : AccessibleShape* pNewChild = ShapeTypeHandler::Instance().CreateAccessibleObject (
814 : aShapeInfo,
815 : _rShapeTreeInfo
816 0 : );
817 0 : Reference< XAccessible > xNewChild( pNewChild ); // keep this alive (do this before calling Init!)
818 0 : if ( pNewChild )
819 0 : pNewChild->Init();
820 :
821 0 : bool bResult = false;
822 :
823 : // Iterate over the visible children. If one of them has an already
824 : // created accessible object that matches pCurrentChild then replace
825 : // it. Otherwise the child to replace is either not in the list or has
826 : // not ye been created (and is therefore not in the list, too) and a
827 : // replacement is not necessary.
828 0 : ChildDescriptorListType::iterator I,aEnd = maVisibleChildren.end();
829 0 : for (I=maVisibleChildren.begin(); I != aEnd; ++I)
830 : {
831 0 : if (I->GetAccessibleShape() == pCurrentChild)
832 : {
833 : // Dispose the current child and send an event about its deletion.
834 0 : pCurrentChild->dispose();
835 : mrContext.CommitChange (
836 : AccessibleEventId::CHILD,
837 : uno::Any(),
838 0 : uno::makeAny (I->mxAccessibleShape));
839 :
840 : // Replace with replacement and send an event about existance
841 : // of the new child.
842 0 : I->mxAccessibleShape = pNewChild;
843 : mrContext.CommitChange (
844 : AccessibleEventId::CHILD,
845 0 : uno::makeAny (I->mxAccessibleShape),
846 0 : uno::Any());
847 0 : bResult = true;
848 0 : break;
849 : }
850 : }
851 :
852 : // When not found among the visible children we have to search the list
853 : // of accessible shapes. This is not yet implemented.
854 :
855 0 : return bResult;
856 : }
857 :
858 : // Add the impl method for IAccessibleParent interface
859 0 : AccessibleControlShape * ChildrenManagerImpl::GetAccControlShapeFromModel(::com::sun::star::beans::XPropertySet* pSet) throw (::com::sun::star::uno::RuntimeException)
860 : {
861 0 : sal_Int32 count = GetChildCount();
862 0 : for (sal_Int32 index=0;index<count;index++)
863 : {
864 0 : AccessibleShape* pAccShape = maVisibleChildren[index].GetAccessibleShape();
865 0 : if (pAccShape && ::accessibility::ShapeTypeHandler::Instance().GetTypeId (pAccShape->GetXShape()) == DRAWING_CONTROL)
866 : {
867 0 : ::accessibility::AccessibleControlShape *pCtlAccShape = static_cast < ::accessibility::AccessibleControlShape* >(pAccShape);
868 0 : if (pCtlAccShape && pCtlAccShape->GetControlModel() == pSet)
869 0 : return pCtlAccShape;
870 : }
871 : }
872 0 : return NULL;
873 : }
874 : uno::Reference<XAccessible>
875 0 : ChildrenManagerImpl::GetAccessibleCaption (const uno::Reference<drawing::XShape>& xShape)
876 : throw (uno::RuntimeException)
877 : {
878 0 : ChildDescriptorListType::iterator I, aEnd = maVisibleChildren.end();
879 0 : for (I = maVisibleChildren.begin(); I != aEnd; ++I)
880 : {
881 0 : if ( I->mxShape.get() == xShape.get() )
882 0 : return I->mxAccessibleShape;
883 : }
884 0 : return uno::Reference<XAccessible> ();
885 : }
886 :
887 : /** Update the <const>SELECTED</const> and the <const>FOCUSED</const> state
888 : of all visible children. Maybe this should be changed to all children.
889 :
890 : Iterate over all descriptors of visible accessible shapes and look them
891 : up in the selection.
892 :
893 : If there is no valid controller then all shapes are deselected and
894 : unfocused. If the controller's frame is not active then all shapes are
895 : unfocused.
896 : */
897 0 : void ChildrenManagerImpl::UpdateSelection (void)
898 : {
899 0 : Reference<frame::XController> xController(maShapeTreeInfo.GetController());
900 : Reference<view::XSelectionSupplier> xSelectionSupplier (
901 0 : xController, uno::UNO_QUERY);
902 :
903 : // Try to cast the selection both to a multi selection and to a single
904 : // selection.
905 0 : Reference<container::XIndexAccess> xSelectedShapeAccess;
906 0 : Reference<drawing::XShape> xSelectedShape;
907 0 : if (xSelectionSupplier.is())
908 : {
909 0 : xSelectedShapeAccess = Reference<container::XIndexAccess> (
910 0 : xSelectionSupplier->getSelection(), uno::UNO_QUERY);
911 0 : xSelectedShape = Reference<drawing::XShape> (
912 0 : xSelectionSupplier->getSelection(), uno::UNO_QUERY);
913 : }
914 :
915 : // Remember the current and new focused shape.
916 0 : AccessibleShape* pCurrentlyFocusedShape = NULL;
917 0 : AccessibleShape* pNewFocusedShape = NULL;
918 : typedef std::pair< AccessibleShape* , sal_Bool > PAIR_SHAPE;//sal_Bool Selected,UnSelected.
919 : typedef std::vector< PAIR_SHAPE > VEC_SHAPE;
920 0 : VEC_SHAPE vecSelect;
921 0 : int nAddSelect=0;
922 0 : int nRemoveSelect=0;
923 0 : sal_Bool bHasSelectedShape=sal_False;
924 0 : ChildDescriptorListType::iterator I, aEnd = maVisibleChildren.end();
925 0 : for (I=maVisibleChildren.begin(); I != aEnd; ++I)
926 : {
927 0 : AccessibleShape* pAccessibleShape = I->GetAccessibleShape();
928 0 : if (I->mxAccessibleShape.is() && I->mxShape.is() && pAccessibleShape!=NULL)
929 : {
930 0 : short nRole = pAccessibleShape->getAccessibleRole();
931 : bool bDrawShape = (
932 0 : nRole == AccessibleRole::GRAPHIC ||
933 0 : nRole == AccessibleRole::EMBEDDED_OBJECT ||
934 0 : nRole == AccessibleRole::SHAPE ||
935 0 : nRole == AccessibleRole::IMAGE_MAP ||
936 0 : nRole == AccessibleRole::TABLE_CELL ||
937 0 : nRole == AccessibleRole::TABLE );
938 0 : bool bShapeIsSelected = false;
939 :
940 : // Look up the shape in the (single or multi-) selection.
941 0 : if (xSelectedShape.is())
942 : {
943 0 : if (I->mxShape == xSelectedShape)
944 : {
945 0 : bShapeIsSelected = true;
946 0 : pNewFocusedShape = pAccessibleShape;
947 : }
948 : }
949 0 : else if (xSelectedShapeAccess.is())
950 : {
951 0 : sal_Int32 nCount=xSelectedShapeAccess->getCount();
952 0 : for (sal_Int32 i=0; i<nCount&&!bShapeIsSelected; i++)
953 0 : if (xSelectedShapeAccess->getByIndex(i) == I->mxShape)
954 : {
955 0 : bShapeIsSelected = true;
956 : // In a multi-selection no shape has the focus.
957 0 : if (nCount == 1)
958 0 : pNewFocusedShape = pAccessibleShape;
959 : }
960 : }
961 :
962 : // Set or reset the SELECTED state.
963 0 : if (bShapeIsSelected)
964 : {
965 0 : if (pAccessibleShape->SetState (AccessibleStateType::SELECTED))
966 : {
967 0 : if (bDrawShape)
968 : {
969 0 : vecSelect.push_back(std::make_pair(pAccessibleShape,sal_True));
970 0 : ++nAddSelect;
971 : }
972 : }
973 : else
974 : {//Selected not change,has selected shape before
975 0 : bHasSelectedShape=sal_True;
976 : }
977 : }
978 : else
979 : //pAccessibleShape->ResetState (AccessibleStateType::SELECTED);
980 : {
981 0 : if(pAccessibleShape->ResetState (AccessibleStateType::SELECTED))
982 : {
983 0 : if(bDrawShape)
984 : {
985 0 : vecSelect.push_back(std::make_pair(pAccessibleShape,sal_False));
986 0 : ++nRemoveSelect;
987 : }
988 : }
989 : }
990 : // Does the shape have the current selection?
991 0 : if (pAccessibleShape->GetState (AccessibleStateType::FOCUSED))
992 0 : pCurrentlyFocusedShape = pAccessibleShape;
993 : }
994 : }
995 :
996 0 : Window *pParentWindow = maShapeTreeInfo.GetWindow();
997 0 : bool bShapeActive= false;
998 : // For table cell, the table's parent must be checked to make sure it has focus.
999 0 : if (pParentWindow)
1000 : {
1001 0 : Window *pPWindow = pParentWindow->GetParent();
1002 0 : if (pParentWindow->HasFocus() || (pPWindow && pPWindow->HasFocus()))
1003 0 : bShapeActive =true;
1004 : }
1005 : // Move focus from current to newly focused shape.
1006 0 : if (pCurrentlyFocusedShape != pNewFocusedShape)
1007 : {
1008 0 : if (pCurrentlyFocusedShape != NULL)
1009 0 : pCurrentlyFocusedShape->ResetState (AccessibleStateType::FOCUSED);
1010 0 : if (pNewFocusedShape != NULL && bShapeActive)
1011 0 : pNewFocusedShape->SetState (AccessibleStateType::FOCUSED);
1012 : }
1013 :
1014 0 : if (nAddSelect >= 10 )//fire selection within
1015 : {
1016 0 : mrContext.CommitChange(AccessibleEventId::SELECTION_CHANGED_WITHIN,uno::Any(),uno::Any());
1017 0 : nAddSelect =0 ;//not fire selection event
1018 : }
1019 : //VEC_SHAPE::iterator vi = vecSelect.begin();
1020 : //for (; vi != vecSelect.end() ;++vi)
1021 0 : VEC_SHAPE::reverse_iterator vi = vecSelect.rbegin();
1022 0 : for (; vi != vecSelect.rend() ;++vi)
1023 :
1024 : {
1025 0 : PAIR_SHAPE &pairShape= *vi;
1026 0 : Reference< XAccessible > xShape(pairShape.first);
1027 0 : uno::Any anyShape;
1028 0 : anyShape <<= xShape;
1029 :
1030 0 : if (pairShape.second)//Selection add
1031 : {
1032 0 : if (bHasSelectedShape)
1033 : {
1034 0 : if ( nAddSelect > 0 )
1035 : {
1036 0 : mrContext.CommitChange(AccessibleEventId::SELECTION_CHANGED_ADD,anyShape,uno::Any());
1037 : }
1038 : }
1039 : else
1040 : {
1041 : //if has not selected shape ,first selected shape is fire selection event;
1042 0 : if (nAddSelect > 0 )
1043 : {
1044 0 : mrContext.CommitChange(AccessibleEventId::SELECTION_CHANGED,anyShape,uno::Any());
1045 : }
1046 0 : if (nAddSelect > 1 )//check other selected shape fire selection add event
1047 : {
1048 0 : bHasSelectedShape=sal_True;
1049 : }
1050 : }
1051 : }
1052 : else //selection remove
1053 : {
1054 0 : mrContext.CommitChange(AccessibleEventId::SELECTION_CHANGED_REMOVE,anyShape,uno::Any());
1055 : }
1056 0 : }
1057 :
1058 : // Remember whether there is a shape that now has the focus.
1059 0 : mpFocusedShape = pNewFocusedShape;
1060 0 : }
1061 :
1062 :
1063 :
1064 :
1065 0 : bool ChildrenManagerImpl::HasFocus (void)
1066 : {
1067 0 : return mpFocusedShape != NULL;
1068 : }
1069 :
1070 :
1071 :
1072 :
1073 0 : void ChildrenManagerImpl::RemoveFocus (void)
1074 : {
1075 0 : if (mpFocusedShape != NULL)
1076 : {
1077 0 : mpFocusedShape->ResetState (AccessibleStateType::FOCUSED);
1078 0 : mpFocusedShape = NULL;
1079 : }
1080 0 : }
1081 :
1082 :
1083 :
1084 0 : void ChildrenManagerImpl::RegisterAsDisposeListener (
1085 : const Reference<drawing::XShape>& xShape)
1086 : {
1087 0 : Reference<lang::XComponent> xComponent (xShape, uno::UNO_QUERY);
1088 0 : if (xComponent.is())
1089 0 : xComponent->addEventListener (
1090 0 : static_cast<document::XEventListener*>(this));
1091 0 : }
1092 :
1093 :
1094 :
1095 :
1096 0 : void ChildrenManagerImpl::UnregisterAsDisposeListener (
1097 : const Reference<drawing::XShape>& xShape)
1098 : {
1099 0 : Reference<lang::XComponent> xComponent (xShape, uno::UNO_QUERY);
1100 0 : if (xComponent.is())
1101 0 : xComponent->removeEventListener (
1102 0 : static_cast<document::XEventListener*>(this));
1103 0 : }
1104 :
1105 :
1106 :
1107 :
1108 : //===== AccessibleChildDescriptor ===========================================
1109 :
1110 0 : ChildDescriptor::ChildDescriptor (const Reference<drawing::XShape>& xShape)
1111 : : mxShape (xShape),
1112 : mxAccessibleShape (NULL),
1113 0 : mbCreateEventPending (true)
1114 : {
1115 : // Empty.
1116 0 : }
1117 :
1118 :
1119 :
1120 :
1121 0 : ChildDescriptor::ChildDescriptor (const Reference<XAccessible>& rxAccessibleShape)
1122 : : mxShape (NULL),
1123 : mxAccessibleShape (rxAccessibleShape),
1124 0 : mbCreateEventPending (true)
1125 : {
1126 : // Make sure that the accessible object has the <const>VISIBLE</const>
1127 : // state set.
1128 0 : AccessibleShape* pAccessibleShape = GetAccessibleShape();
1129 0 : pAccessibleShape->SetState (AccessibleStateType::VISIBLE);
1130 0 : }
1131 :
1132 :
1133 :
1134 :
1135 0 : ChildDescriptor::~ChildDescriptor (void)
1136 : {
1137 0 : }
1138 :
1139 :
1140 :
1141 :
1142 0 : AccessibleShape* ChildDescriptor::GetAccessibleShape (void) const
1143 : {
1144 0 : return static_cast<AccessibleShape*> (mxAccessibleShape.get());
1145 : }
1146 :
1147 0 : void ChildDescriptor::setIndexAtAccessibleShape(sal_Int32 _nIndex)
1148 : {
1149 0 : AccessibleShape* pShape = GetAccessibleShape();
1150 0 : if ( pShape )
1151 0 : pShape->setIndexInParent(_nIndex);
1152 0 : }
1153 :
1154 :
1155 :
1156 :
1157 :
1158 0 : void ChildDescriptor::disposeAccessibleObject (AccessibleContextBase& rParent)
1159 : {
1160 0 : if (mxAccessibleShape.is())
1161 : {
1162 : // Send event that the shape has been removed.
1163 0 : uno::Any aOldValue;
1164 0 : aOldValue <<= mxAccessibleShape;
1165 : rParent.CommitChange (
1166 : AccessibleEventId::CHILD,
1167 : uno::Any(),
1168 0 : aOldValue);
1169 :
1170 : // Dispose and remove the object.
1171 0 : Reference<lang::XComponent> xComponent (mxAccessibleShape, uno::UNO_QUERY);
1172 0 : if (xComponent.is())
1173 0 : xComponent->dispose ();
1174 :
1175 0 : mxAccessibleShape = NULL;
1176 : }
1177 0 : }
1178 :
1179 :
1180 : } // end of namespace accessibility
1181 :
1182 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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