Qt 4.8
qdeclarativecontext.h
Go to the documentation of this file.
1 /****************************************************************************
2 **
3 ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/legal
5 **
6 ** This file is part of the QtDeclarative 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 Digia. For licensing terms and
14 ** conditions see http://qt.digia.com/licensing. For further information
15 ** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL included in the
21 ** packaging of this file. Please review the following information to
22 ** ensure the GNU Lesser General Public License version 2.1 requirements
23 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24 **
25 ** In addition, as a special exception, Digia gives you certain additional
26 ** rights. These rights are described in the Digia Qt LGPL Exception
27 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
28 **
29 ** GNU General Public License Usage
30 ** Alternatively, this file may be used under the terms of the GNU
31 ** General Public License version 3.0 as published by the Free Software
32 ** Foundation and appearing in the file LICENSE.GPL included in the
33 ** packaging of this file. Please review the following information to
34 ** ensure the GNU General Public License version 3.0 requirements will be
35 ** met: http://www.gnu.org/copyleft/gpl.html.
36 **
37 **
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41 
42 #ifndef QDECLARATIVECONTEXT_H
43 #define QDECLARATIVECONTEXT_H
44 
45 #include <QtCore/qurl.h>
46 #include <QtCore/qobject.h>
47 #include <QtScript/qscriptvalue.h>
48 #include <QtCore/qmetatype.h>
49 #include <QtCore/qvariant.h>
50 
52 
54 
55 QT_MODULE(Declarative)
56 
57 class QString;
58 class QDeclarativeEngine;
61 class QDeclarativeCompositeTypeData;
63 
65 {
66  Q_OBJECT
68 
69 public:
70  QDeclarativeContext(QDeclarativeEngine *parent, QObject *objParent=0);
71  QDeclarativeContext(QDeclarativeContext *parent, QObject *objParent=0);
72  virtual ~QDeclarativeContext();
73 
74  bool isValid() const;
75 
76  QDeclarativeEngine *engine() const;
77  QDeclarativeContext *parentContext() const;
78 
79  QObject *contextObject() const;
80  void setContextObject(QObject *);
81 
82  QVariant contextProperty(const QString &) const;
83  void setContextProperty(const QString &, QObject *);
84  void setContextProperty(const QString &, const QVariant &);
85 
86  QUrl resolvedUrl(const QUrl &);
87 
88  void setBaseUrl(const QUrl &);
89  QUrl baseUrl() const;
90 
91 private:
92  friend class QDeclarativeVME;
93  friend class QDeclarativeEngine;
95  friend class QDeclarativeExpression;
99  friend class QDeclarativeComponent;
101  friend class QDeclarativeScriptPrivate;
102  friend class QDeclarativeBoundSignalProxy;
107 };
109 
111 
113 
114 #endif // QDECLARATIVECONTEXT_H
The QVariant class acts like a union for the most common Qt data types.
Definition: qvariant.h:92
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
#define QT_MODULE(x)
Definition: qglobal.h:2783
#define QT_BEGIN_HEADER
Definition: qglobal.h:136
#define Q_DISABLE_COPY(Class)
Disables the use of copy constructors and assignment operators for the given Class.
Definition: qglobal.h:2523
The QUrl class provides a convenient interface for working with URLs.
Definition: qurl.h:61
The QString class provides a Unicode character string.
Definition: qstring.h:83
The QObject class is the base class of all Qt objects.
Definition: qobject.h:111
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
The QDeclarativeComponent class encapsulates a QML component definition.
#define Q_OBJECT
Definition: qobjectdefs.h:157
#define Q_DECLARE_METATYPE(TYPE)
This macro makes the type Type known to QMetaType as long as it provides a public default constructor...
Definition: qmetatype.h:265
#define Q_DECLARATIVE_EXPORT
Definition: qglobal.h:1454
The QDeclarativeEngine class provides an environment for instantiating QML components.
The QDeclarativeContext class defines a context within a QML engine.
#define Q_DECLARE_PRIVATE(Class)
Definition: qglobal.h:2467
The QDeclarativeExpression class evaluates JavaScript in a QML context.
#define QT_END_HEADER
Definition: qglobal.h:137
The QList class is a template class that provides lists.
Definition: qdatastream.h:62