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Diffstat (limited to 'src/xmlpatterns/environment/qfocus.cpp')
| -rw-r--r-- | src/xmlpatterns/environment/qfocus.cpp | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/xmlpatterns/environment/qfocus.cpp b/src/xmlpatterns/environment/qfocus.cpp new file mode 100644 index 0000000..72031bf --- /dev/null +++ b/src/xmlpatterns/environment/qfocus.cpp @@ -0,0 +1,107 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtXmlPatterns module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qdaytimeduration_p.h" + +#include "qfocus_p.h" + +QT_BEGIN_NAMESPACE + +using namespace QPatternist; + +Focus::Focus(const DynamicContext::Ptr &prevContext) : DelegatingDynamicContext(prevContext), + m_contextSizeCached(-1) +{ + Q_ASSERT(prevContext); + Q_ASSERT(prevContext != this); +} + +xsInteger Focus::contextPosition() const +{ + Q_ASSERT(m_focusIterator); + return m_focusIterator->position(); +} + +Item Focus::contextItem() const +{ + Q_ASSERT(m_focusIterator); + return m_focusIterator->current(); +} + +xsInteger Focus::contextSize() +{ + Q_ASSERT(m_focusIterator); + if(m_contextSizeCached == -1) + m_contextSizeCached = m_focusIterator->copy()->count(); + + Q_ASSERT_X(m_contextSizeCached == m_focusIterator->copy()->count(), Q_FUNC_INFO, + "If our cache is not the same as the real count, something is wrong."); + + return m_contextSizeCached; +} + +void Focus::setFocusIterator(const Item::Iterator::Ptr &it) +{ + Q_ASSERT(it); + m_focusIterator = it; +} + +Item::Iterator::Ptr Focus::focusIterator() const +{ + return m_focusIterator; +} + +Item Focus::currentItem() const +{ + /* In the case that there is no top level expression that creates a focus, + * fn:current() should return the focus. This logic achieves this. + * Effectively we traverse up our "context stack" through recursion, and + * start returning when we've found the top most focus. */ + + const Item current(m_prevContext->currentItem()); + + if(current.isNull()) + return m_focusIterator->current(); + else + return current; +} + +QT_END_NAMESPACE |