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Diffstat (limited to 'src/3rdparty/phonon/mmf/objecttree.cpp')
-rw-r--r-- | src/3rdparty/phonon/mmf/objecttree.cpp | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/3rdparty/phonon/mmf/objecttree.cpp b/src/3rdparty/phonon/mmf/objecttree.cpp new file mode 100644 index 0000000..06b0ced --- /dev/null +++ b/src/3rdparty/phonon/mmf/objecttree.cpp @@ -0,0 +1,100 @@ +/* This file is part of the KDE project. + +Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). + +This library is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation, either version 2.1 or 3 of the License. + +This library 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 for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this library. If not, see <http://www.gnu.org/licenses/>. + +*/ + +#include <QTextStream> +#include <QWidget> +#include "objecttree.h" + +QT_BEGIN_NAMESPACE + +namespace ObjectTree +{ + +DepthFirstConstIterator::DepthFirstConstIterator() + : m_pointee(0) +{ + +} + +DepthFirstConstIterator::DepthFirstConstIterator + (const QObject& root) + : m_pointee(&root) +{ + +} + +DepthFirstConstIterator& + DepthFirstConstIterator::operator++() +{ + const QObjectList& children = m_pointee->children(); + + if (children.count() == 0) { + backtrack(); + } + else { + m_history.push(0); + m_pointee = children.first(); + } + + return *this; +} + +void DepthFirstConstIterator::backtrack() +{ + if (m_history.count()) { + const int index = m_history.top(); + m_history.pop(); + + const QObjectList& siblings = m_pointee->parent()->children(); + if (siblings.count() > index + 1) { + m_history.push(index + 1); + m_pointee = siblings[index + 1]; + } + else { + m_pointee = m_pointee->parent(); + backtrack(); + } + } + else { + // Reached end of search + m_pointee = 0; + } +} + + + +AncestorConstIterator::AncestorConstIterator() +{ + +} + +AncestorConstIterator::AncestorConstIterator(const QObject& leaf) +{ + m_ancestors.push(&leaf); + QObject* ancestor = leaf.parent(); + while(ancestor) + { + m_ancestors.push(ancestor); + ancestor = ancestor->parent(); + } +} + +} // namespace ObjectTree + +QT_END_NAMESPACE + |