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Diffstat (limited to 'forms/source/xforms/pathexpression.cxx')
| -rw-r--r-- | forms/source/xforms/pathexpression.cxx | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/forms/source/xforms/pathexpression.cxx b/forms/source/xforms/pathexpression.cxx new file mode 100644 index 000000000000..ef82e87c4d18 --- /dev/null +++ b/forms/source/xforms/pathexpression.cxx @@ -0,0 +1,154 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_forms.hxx" + +#include "pathexpression.hxx" +#include "unohelper.hxx" +#include "evaluationcontext.hxx" +#include "NameContainer.hxx" + +#include <com/sun/star/xml/dom/XNode.hpp> +#include <com/sun/star/xml/dom/XNodeList.hpp> +#include <com/sun/star/xml/dom/NodeType.hpp> +#include <com/sun/star/xml/dom/events/XEventListener.hpp> +#include <com/sun/star/xml/dom/events/XEventTarget.hpp> +#include <com/sun/star/xml/xpath/XXPathObject.hpp> +#include <com/sun/star/container/XNameContainer.hpp> +#include <com/sun/star/uno/Sequence.hxx> +#include <rtl/ustrbuf.hxx> + +#include <unotools/textsearch.hxx> + +#include <algorithm> +#include <functional> + + +using rtl::OUString; +using rtl::OUStringBuffer; +using com::sun::star::uno::Reference; +using com::sun::star::uno::Sequence; +using com::sun::star::xml::dom::XNode; +using com::sun::star::xml::dom::XNodeList; +using com::sun::star::xml::dom::events::XEventListener; +using com::sun::star::xml::dom::events::XEventTarget; +using com::sun::star::container::XNameContainer; +using com::sun::star::xml::xpath::XXPathObject; +using com::sun::star::uno::RuntimeException; +using com::sun::star::uno::UNO_QUERY; +using com::sun::star::uno::UNO_QUERY_THROW; +using com::sun::star::xml::dom::NodeType_TEXT_NODE; +using com::sun::star::xml::xpath::XPathObjectType_XPATH_UNDEFINED; +using namespace std; + + + + +namespace xforms +{ + +PathExpression::PathExpression() + : ComputedExpression(), + maNodes() +{ +} + +PathExpression::~PathExpression() +{ +} + + + +void PathExpression::setExpression( const OUString& rExpression ) +{ + // set new expression, and clear pre-computed results + ComputedExpression::setExpression( rExpression ); + + // check expression against regular expression to determine + // whether it contains only 'simple' (i.e. static) conditions. For + // now, we check whether it only contains number positions. + // (TODO: Only works for names containing only ASCII letters+digits.) + mbIsSimple = + _checkExpression( "( */@?[a-zA-Z0-9:]+( *\\[ *[0-9 ]+ *\\] *)?)+" ); + + maNodes.clear(); +} + +const rtl::OUString PathExpression::_getExpressionForEvaluation() const +{ + OUString sExpr = ComputedExpression::_getExpressionForEvaluation(); + if( sExpr.getLength() == 0 ) + sExpr = OUSTRING("."); + return sExpr; +} + +bool PathExpression::evaluate( const EvaluationContext& rContext ) +{ + // for simple expression we don't need to re-bind (if we were bound before) + // (we will evaluate empty expressions, since they are interpreted as ".") + if( mxResult.is() && isSimpleExpression() ) + return true; + + bool bResult = _evaluate( rContext, _getExpressionForEvaluation() ); + + // clear old result, and copy new + maNodes.clear(); + if( mxResult.is() ) + { + // copy node list + Reference<XNodeList> xNodeList = mxResult->getNodeList(); + OSL_ENSURE( xNodeList.is(), "empty object (instead of empty list)" ); + sal_Int32 nLength = xNodeList.is() ? xNodeList->getLength() : 0; + for( sal_Int32 n = 0; n < nLength; n++ ) + maNodes.push_back( xNodeList->item( n ) ); + } + + return bResult; +} + + +Reference<XNode> PathExpression::getNode() const +{ + Reference<XNode> xResult; + if( ! maNodes.empty() ) + xResult = *maNodes.begin(); + return xResult; +} + +const PathExpression::NodeVector_t PathExpression::getNodeList() const +{ + return maNodes; +} + +Reference<XNodeList> PathExpression::getXNodeList() const +{ + return mxResult.is() ? mxResult->getNodeList() : Reference<XNodeList>(); +} + + +} // namespace xforms |