1 /****************************************************************************
3 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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5 ** Contact: Nokia Corporation (qt-info@nokia.com)
7 ** This file is part of the QtDeclarative module of the Qt Toolkit.
9 ** $QT_BEGIN_LICENSE:LGPL$
10 ** GNU Lesser General Public License Usage
11 ** This file may be used under the terms of the GNU Lesser General Public
12 ** License version 2.1 as published by the Free Software Foundation and
13 ** appearing in the file LICENSE.LGPL included in the packaging of this
14 ** file. Please review the following information to ensure the GNU Lesser
15 ** General Public License version 2.1 requirements will be met:
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18 ** In addition, as a special exception, Nokia gives you certain additional
19 ** rights. These rights are described in the Nokia Qt LGPL Exception
20 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
22 ** GNU General Public License Usage
23 ** Alternatively, this file may be used under the terms of the GNU General
24 ** Public License version 3.0 as published by the Free Software Foundation
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26 ** file. Please review the following information to ensure the GNU General
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40 ****************************************************************************/
42 #ifndef QDECLARATIVEEXPRESSION_H
43 #define QDECLARATIVEEXPRESSION_H
45 #include <QtDeclarative/qdeclarativeerror.h>
47 #include <QtCore/qobject.h>
48 #include <QtCore/qvariant.h>
54 QT_MODULE(Declarative)
57 class QDeclarativeRefCount;
58 class QDeclarativeEngine;
59 class QDeclarativeContext;
60 class QDeclarativeExpressionPrivate;
61 class QDeclarativeContextData;
63 class Q_DECLARATIVE_EXPORT QDeclarativeExpression : public QObject
67 QDeclarativeExpression();
68 QDeclarativeExpression(QDeclarativeContext *, QObject *, const QString &, QObject * = 0);
69 virtual ~QDeclarativeExpression();
71 QDeclarativeEngine *engine() const;
72 QDeclarativeContext *context() const;
74 QString expression() const;
75 void setExpression(const QString &);
77 bool notifyOnValueChanged() const;
78 void setNotifyOnValueChanged(bool);
80 QString sourceFile() const;
81 int lineNumber() const;
82 void setSourceLocation(const QString &fileName, int line);
84 QObject *scopeObject() const;
86 bool hasError() const;
88 QDeclarativeError error() const;
90 QVariant evaluate(bool *valueIsUndefined = 0);
96 QDeclarativeExpression(QDeclarativeContextData *, QObject *, const QString &,
97 QDeclarativeExpressionPrivate &dd);
98 QDeclarativeExpression(QDeclarativeContextData *, QObject *, const QScriptValue &,
99 QDeclarativeExpressionPrivate &dd);
100 QDeclarativeExpression(QDeclarativeContextData *, void *, QDeclarativeRefCount *rc,
101 QObject *me, const QString &, int, QDeclarativeExpressionPrivate &dd);
104 QDeclarativeExpression(QDeclarativeContextData *, QObject *, const QString &);
106 Q_DISABLE_COPY(QDeclarativeExpression)
107 Q_DECLARE_PRIVATE(QDeclarativeExpression)
108 Q_PRIVATE_SLOT(d_func(), void _q_notify())
109 friend class QDeclarativeDebugger;
110 friend class QDeclarativeContext;
111 friend class QDeclarativeVME;
118 #endif // QDECLARATIVEEXPRESSION_H