source: trunk/src/script/api/qscriptclasspropertyiterator.cpp@ 636

Last change on this file since 636 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.
  • Property svn:eol-style set to native
File size: 5.1 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtScript module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL-ONLY$
10** GNU Lesser General Public License Usage
11** This file may be used under the terms of the GNU Lesser
12** General Public License version 2.1 as published by the Free Software
13** Foundation and appearing in the file LICENSE.LGPL included in the
14** packaging of this file. Please review the following information to
15** ensure the GNU Lesser General Public License version 2.1 requirements
16** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
17**
18** If you have questions regarding the use of this file, please contact
19** Nokia at [email protected].
20** $QT_END_LICENSE$
21**
22****************************************************************************/
23
24#include "qscriptclasspropertyiterator.h"
25
26#include "qscriptstring.h"
27
28QT_BEGIN_NAMESPACE
29
30/*!
31 \since 4.4
32 \class QScriptClassPropertyIterator
33
34 \brief The QScriptClassPropertyIterator class provides an iterator interface for custom Qt Script objects.
35
36 \ingroup script
37
38 This class is only relevant if you have subclassed QScriptClass and
39 want to provide enumeration of your custom properties (e.g. when
40 objects of your class are used with QScriptValueIterator, or with
41 the for-in statement in scripts).
42
43 The object() function returns the Qt Script object the iterator is
44 traversing.
45
46 toFront(), hasNext() and next() provide forward iteration.
47
48 toBack(), hasPrevious() and previous() provide backward iteration.
49
50 name(), id() and flags() return information about the last property
51 that was jumped over using next() or previous().
52
53 \sa QScriptClass::newIterator(), QScriptValueIterator
54*/
55
56class QScriptClassPropertyIteratorPrivate
57{
58 Q_DECLARE_PUBLIC(QScriptClassPropertyIterator)
59public:
60 QScriptClassPropertyIteratorPrivate() {}
61 virtual ~QScriptClassPropertyIteratorPrivate() {}
62
63 QScriptValue object;
64
65 QScriptClassPropertyIterator *q_ptr;
66};
67
68/*!
69 Constructs an iterator for traversing \a object.
70
71 Subclasses should ensure that the iterator is set to the front of the
72 sequence of properties (before the first property).
73*/
74QScriptClassPropertyIterator::QScriptClassPropertyIterator(const QScriptValue &object)
75 : d_ptr(new QScriptClassPropertyIteratorPrivate)
76{
77 d_ptr->q_ptr = this;
78 d_ptr->object = object;
79}
80
81/*!
82 \internal
83*/
84QScriptClassPropertyIterator::QScriptClassPropertyIterator(const QScriptValue &object,
85 QScriptClassPropertyIteratorPrivate &dd)
86 : d_ptr(&dd)
87{
88 d_ptr->q_ptr = this;
89 d_ptr->object = object;
90}
91
92/*!
93 Destroys the iterator.
94*/
95QScriptClassPropertyIterator::~QScriptClassPropertyIterator()
96{
97}
98
99/*!
100 Returns the Qt Script object this iterator is traversing.
101*/
102QScriptValue QScriptClassPropertyIterator::object() const
103{
104 Q_D(const QScriptClassPropertyIterator);
105 return d->object;
106}
107
108/*!
109 \fn bool QScriptClassPropertyIterator::hasNext() const
110
111 Returns true if there is at least one item ahead of the iterator
112 (i.e. the iterator is \e not at the back of the property sequence);
113 otherwise returns false.
114
115 \sa next(), hasPrevious()
116*/
117
118/*!
119 \fn void QScriptClassPropertyIterator::next()
120
121 Advances the iterator by one position.
122
123 Calling this function on an iterator located at the back of the
124 container leads to undefined results.
125
126 \sa hasNext(), previous(), name()
127*/
128
129/*!
130 \fn bool QScriptClassPropertyIterator::hasPrevious() const
131
132 Returns true if there is at least one item behind the iterator
133 (i.e. the iterator is \e not at the front of the property sequence);
134 otherwise returns false.
135
136 \sa previous(), hasNext()
137*/
138
139/*!
140 \fn void QScriptClassPropertyIterator::previous()
141
142 Moves the iterator back by one position.
143
144 Calling this function on an iterator located at the front of the
145 container leads to undefined results.
146
147 \sa hasPrevious(), next(), name()
148*/
149
150/*!
151 \fn void QScriptClassPropertyIterator::toFront()
152
153 Moves the iterator to the front of the QScriptValue (before the
154 first property).
155
156 \sa toBack(), next()
157*/
158
159/*!
160 \fn void QScriptClassPropertyIterator::toBack()
161
162 Moves the iterator to the back of the QScriptValue (after the
163 last property).
164
165 \sa toFront(), previous()
166*/
167
168/*!
169 \fn QScriptString QScriptClassPropertyIterator::name() const
170
171 Returns the name of the last property that was jumped over using
172 next() or previous().
173
174 \sa id()
175*/
176
177/*!
178 \fn uint QScriptClassPropertyIterator::id() const
179
180 Returns the id of the last property that was jumped over using
181 next() or previous().
182
183 The default implementation returns 0.
184
185 \sa name()
186*/
187uint QScriptClassPropertyIterator::id() const
188{
189 return 0;
190}
191
192/*!
193 Returns the flags of the last property that was jumped over using
194 next() or previous().
195
196 The default implementation calls the propertyFlags() function of
197 object() with argument name().
198*/
199QScriptValue::PropertyFlags QScriptClassPropertyIterator::flags() const
200{
201 return object().propertyFlags(name());
202}
203
204QT_END_NAMESPACE
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