237 lines
7.1 KiB
C++
237 lines
7.1 KiB
C++
/*************************************************************************
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*
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* $RCSfile: ChildrenManager.cxx,v $
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*
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* $Revision: 1.3 $
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*
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* last change: $Author: af $ $Date: 2002-02-08 16:59:32 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#ifndef _SVX_ACCESSIBILITY_CHILDREN_MANAGER_HXX
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#include "ChildrenManager.hxx"
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#endif
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#ifndef _SVX_ACCESSIBILITY_SHAPE_TYPE_HANDLER_HXX
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#include "ShapeTypeHandler.hxx"
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#endif
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#ifndef _COM_SUN_STAR_CONTAINER_XIndexAccess_HPP_
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#include <com/sun/star/container/XIndexAccess.hpp>
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#endif
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#ifndef _COM_SUN_STAR_LANG_INDEXOUTOFBOUNDSEXCEPTION_HPP_
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#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
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#endif
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using namespace ::rtl;
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using namespace ::com::sun::star;
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using namespace ::drafts::com::sun::star::accessibility;
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namespace accessibility {
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//===== AccessibleChildrenManager ===========================================
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ChildrenManager::ChildrenManager (
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const ::com::sun::star::uno::Reference<
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::drafts::com::sun::star::accessibility::XAccessible>& rxParent)
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: mxParent (rxParent)
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{
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// emtpy
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}
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ChildrenManager::~ChildrenManager (void)
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{
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// emtpy
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}
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long ChildrenManager::getChildCount (void) const throw ()
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{
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return maChildDescriptorList.size();
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}
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/** Return the requested accessible child object. Create it if it is not
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yet in the cache.
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*/
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::com::sun::star::uno::Reference<
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::drafts::com::sun::star::accessibility::XAccessible>
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ChildrenManager::getChild (long nIndex)
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throw (::com::sun::star::uno::RuntimeException)
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{
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// Check wether the given index is valid.
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if (nIndex < 0 || (unsigned long)nIndex >= maChildDescriptorList.size())
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throw lang::IndexOutOfBoundsException (
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::rtl::OUString::createFromAscii ("no accessible child with index " + nIndex),
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mxParent);
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ChildDescriptor& aChildDescriptor = maChildDescriptorList[nIndex];
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if ( ! aChildDescriptor.mxAccessibleShape.is())
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{
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::osl::Guard< ::osl::Mutex> aGuard (::osl::Mutex::getGlobalMutex());
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// Make sure that the requested accessible object has not been
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// created while locking the global mutex.
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if ( ! aChildDescriptor.mxAccessibleShape.is())
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{
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// Create corresponding accessible object.
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aChildDescriptor.mxAccessibleShape =
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ShapeTypeHandler::Instance().createAccessibleObject (
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aChildDescriptor.mxShape,
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mxParent);
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}
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}
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return aChildDescriptor.mxAccessibleShape;
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}
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/** For now forward the update of the shape list to the general update
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method.
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*/
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void ChildrenManager::update (const ::com::sun::star::uno::Reference<
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::com::sun::star::drawing::XShapes>& xShapeList)
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{
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update (xShapeList, maVisibleArea);
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}
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/** For now forward the update of the visible area to the general update
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method.
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*/
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void ChildrenManager::update (const Rectangle& aVisibleArea)
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{
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update (mxOriginalShapeList, aVisibleArea);
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}
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/** Find all shapes among the specified shapes that lie fully or partially inside the
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visible area. Put those shapes into the cleared cache. The
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corresponding accessible objects will be created on demand.
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*/
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void ChildrenManager::update (const ::com::sun::star::uno::Reference<
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::com::sun::star::drawing::XShapes>& xShapeList,
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const Rectangle& aVisibleArea)
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{
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::osl::Guard< ::osl::Mutex> aGuard (::osl::Mutex::getGlobalMutex());
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// Clear the list of children.
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maChildDescriptorList.clear ();
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// Remember the new list and visible area for later use.
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mxOriginalShapeList = xShapeList;
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maVisibleArea = aVisibleArea;
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// Determine all fully and partially visible shapes and add those to the list
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// of managed children.
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uno::Reference<container::XIndexAccess> xIA (mxOriginalShapeList, uno::UNO_QUERY);
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long n = xIA->getCount();
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for (long i=0; i<n; i++)
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{
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uno::Reference<drawing::XShape> xShape (xIA->getByIndex(i), uno::UNO_QUERY);
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Rectangle aBoundingBox (xShape->getPosition().X, xShape->getPosition().Y,
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xShape->getSize().Width, xShape->getSize().Height);
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if (aBoundingBox.IsOver (maVisibleArea))
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{
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// Add shape to list of visible children.
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maChildDescriptorList.push_back (ChildDescriptor (xShape));
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}
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}
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}
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// This method is experimental. Use with care.
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long int ChildrenManager::getChildIndex (const ::com::sun::star::uno::Reference<
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::drafts::com::sun::star::accessibility::XAccessible>& xChild) const
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throw (::com::sun::star::uno::RuntimeException)
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{
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for (long i=0; i<maChildDescriptorList.size(); i++)
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{
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// Is this euqality comparison valid?
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if (maChildDescriptorList[i].mxAccessibleShape == xChild)
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return i;
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}
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return -1;
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}
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//===== AccessibleChildDescriptor ===========================================
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ChildDescriptor::ChildDescriptor (const uno::Reference<
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drawing::XShape>& xShape)
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: mxShape (xShape)
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{
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// Empty.
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}
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} // end of namespace accessibility
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