173 lines
7.6 KiB
C++
173 lines
7.6 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: container.cxx,v $
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*
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* $Revision: 1.6 $
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*
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* last change: $Author: obo $ $Date: 2006-09-17 17:06:35 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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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 2005 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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// MARKER(update_precomp.py): autogen include statement, do not remove
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#include "precompiled_comphelper.hxx"
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#ifndef _COM_SUN_STAR_UNO_XINTERFACE_HPP_
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#include <com/sun/star/uno/XInterface.hpp>
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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_CONTAINER_XCHILD_HPP_
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#include <com/sun/star/container/XChild.hpp>
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#endif
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#ifndef _COMPHELPER_CONTAINER_HXX_
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#include <comphelper/container.hxx>
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#endif
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#ifndef _OSL_DIAGNOSE_H_
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#include <osl/diagnose.h>
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#endif
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//.........................................................................
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namespace comphelper
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{
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//.........................................................................
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//==============================================================================
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IndexAccessIterator::IndexAccessIterator(::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface> xStartingPoint)
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:m_xStartingPoint(xStartingPoint)
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,m_xCurrentObject(NULL)
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{
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OSL_ENSURE(m_xStartingPoint.is(), "IndexAccessIterator::IndexAccessIterator : no starting point !");
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}
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IndexAccessIterator::~IndexAccessIterator() {}
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//------------------------------------------------------------------------------
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::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface> IndexAccessIterator::Next()
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{
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sal_Bool bCheckingStartingPoint = !m_xCurrentObject.is();
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// ist die aktuelle Node der Anfangspunkt ?
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sal_Bool bAlreadyCheckedCurrent = m_xCurrentObject.is();
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// habe ich die aktuelle Node schon mal mittels ShouldHandleElement testen ?
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if (!m_xCurrentObject.is())
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m_xCurrentObject = m_xStartingPoint;
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::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface> xSearchLoop( m_xCurrentObject);
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sal_Bool bHasMoreToSearch = sal_True;
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sal_Bool bFoundSomething = sal_False;
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while (!bFoundSomething && bHasMoreToSearch)
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{
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// pre-order-traversierung
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if (!bAlreadyCheckedCurrent && ShouldHandleElement(xSearchLoop))
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{
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m_xCurrentObject = xSearchLoop;
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bFoundSomething = sal_True;
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}
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else
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{
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// zuerst absteigen, wenn moeglich
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::com::sun::star::uno::Reference< ::com::sun::star::container::XIndexAccess> xContainerAccess(xSearchLoop, ::com::sun::star::uno::UNO_QUERY);
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if (xContainerAccess.is() && xContainerAccess->getCount() && ShouldStepInto(xContainerAccess))
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{ // zum ersten Child
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::com::sun::star::uno::Any aElement(xContainerAccess->getByIndex(0));
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xSearchLoop = *(::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>*)aElement.getValue();
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bCheckingStartingPoint = sal_False;
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m_arrChildIndizies.push_back((sal_Int32)0);
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}
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else
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{
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// dann nach oben und nach rechts, wenn moeglich
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while (m_arrChildIndizies.size() > 0)
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{ // (mein Stack ist nich leer, also kann ich noch nach oben gehen)
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::com::sun::star::uno::Reference< ::com::sun::star::container::XChild> xChild(xSearchLoop, ::com::sun::star::uno::UNO_QUERY);
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OSL_ENSURE(xChild.is(), "IndexAccessIterator::Next : a content has no approriate interface !");
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::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface> xParent( xChild->getParent());
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xContainerAccess = ::com::sun::star::uno::Reference< ::com::sun::star::container::XIndexAccess>(xParent, ::com::sun::star::uno::UNO_QUERY);
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OSL_ENSURE(xContainerAccess.is(), "IndexAccessIterator::Next : a content has an invalid parent !");
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// den Index, den SearchLoop in diesem Parent hatte, von meinem 'Stack'
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sal_Int32 nOldSearchChildIndex = m_arrChildIndizies[m_arrChildIndizies.size() - 1];
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m_arrChildIndizies.pop_back();
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if (nOldSearchChildIndex < xContainerAccess->getCount() - 1)
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{ // auf dieser Ebene geht es noch nach rechts
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++nOldSearchChildIndex;
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// also das naechste Child
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::com::sun::star::uno::Any aElement(xContainerAccess->getByIndex(nOldSearchChildIndex));
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xSearchLoop = *(::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>*) aElement.getValue();
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bCheckingStartingPoint = sal_False;
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// und dessen Position auf den 'Stack'
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m_arrChildIndizies.push_back((sal_Int32)nOldSearchChildIndex);
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break;
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}
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// hierher komme ich, wenn es auf der aktuellen Ebene nicht nach rechts geht, dann mache ich eine darueber weiter
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xSearchLoop = xParent;
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bCheckingStartingPoint = sal_False;
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}
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if ((m_arrChildIndizies.size() == 0) && !bCheckingStartingPoint)
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{ // das ist genau dann der Fall, wenn ich keinen rechten Nachbarn fuer irgendeinen der direkten Vorfahren des
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// urspruenglichen xSearchLoop gefunden habe
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bHasMoreToSearch = sal_False;
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}
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}
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if (bHasMoreToSearch)
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{ // ich habe in xSearchLoop jetzt ein Interface eines 'Knotens' meines 'Baumes', den ich noch abtesten kann
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if (ShouldHandleElement(xSearchLoop))
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{
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m_xCurrentObject = xSearchLoop;
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bFoundSomething = sal_True;
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}
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else
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if (bCheckingStartingPoint)
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// ich bin noch am Anfang, konnte nicht absteigen, und habe an diesem Anfang nix gefunden -> nix mehr zu tun
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bHasMoreToSearch = sal_False;
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bAlreadyCheckedCurrent = sal_True;
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}
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}
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}
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if (!bFoundSomething)
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{
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OSL_ENSURE(m_arrChildIndizies.size() == 0, "IndexAccessIterator::Next : items left on stack ! how this ?");
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Invalidate();
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}
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return m_xCurrentObject;
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}
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//.........................................................................
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} // namespace comphelper
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//.........................................................................
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