1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtXmlPatterns module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#include "qdaytimeduration_p.h"
41
42#include "qfocus_p.h"
43
44QT_BEGIN_NAMESPACE
45
46using namespace QPatternist;
47
48Focus::Focus(const DynamicContext::Ptr &prevContext) : DelegatingDynamicContext(prevContext),
49 m_contextSizeCached(-1)
50{
51 Q_ASSERT(prevContext);
52 Q_ASSERT(prevContext != this);
53}
54
55xsInteger Focus::contextPosition() const
56{
57 Q_ASSERT(m_focusIterator);
58 return m_focusIterator->position();
59}
60
61Item Focus::contextItem() const
62{
63 Q_ASSERT(m_focusIterator);
64 return m_focusIterator->current();
65}
66
67xsInteger Focus::contextSize()
68{
69 Q_ASSERT(m_focusIterator);
70 if(m_contextSizeCached == -1)
71 m_contextSizeCached = m_focusIterator->copy()->count();
72
73 Q_ASSERT_X(m_contextSizeCached == m_focusIterator->copy()->count(), Q_FUNC_INFO,
74 "If our cache is not the same as the real count, something is wrong.");
75
76 return m_contextSizeCached;
77}
78
79void Focus::setFocusIterator(const Item::Iterator::Ptr &it)
80{
81 Q_ASSERT(it);
82 m_focusIterator = it;
83}
84
85Item::Iterator::Ptr Focus::focusIterator() const
86{
87 return m_focusIterator;
88}
89
90Item Focus::currentItem() const
91{
92 /* In the case that there is no top level expression that creates a focus,
93 * fn:current() should return the focus. This logic achieves this.
94 * Effectively we traverse up our "context stack" through recursion, and
95 * start returning when we've found the top most focus. */
96
97 const Item current(m_prevContext->currentItem());
98
99 if(current.isNull())
100 return m_focusIterator->current();
101 else
102 return current;
103}
104
105QT_END_NAMESPACE
106

source code of qtxmlpatterns/src/xmlpatterns/environment/qfocus.cpp