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
25 ** and appearing in the file LICENSE.GPL included in the packaging of this
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>
46 #include <QtDeclarative/qdeclarativescriptstring.h>
48 #include <QtCore/qobject.h>
49 #include <QtCore/qvariant.h>
55 QT_MODULE(Declarative)
58 class QDeclarativeRefCount;
59 class QDeclarativeEngine;
60 class QDeclarativeContext;
61 class QDeclarativeExpressionPrivate;
62 class QDeclarativeContextData;
63 class Q_DECLARATIVE_EXPORT QDeclarativeExpression : public QObject
67 QDeclarativeExpression();
68 QDeclarativeExpression(QDeclarativeContext *, QObject *, const QString &, QObject * = 0);
69 explicit QDeclarativeExpression(const QDeclarativeScriptString &, QObject * = 0);
70 virtual ~QDeclarativeExpression();
72 QDeclarativeEngine *engine() const;
73 QDeclarativeContext *context() const;
75 QString expression() const;
76 void setExpression(const QString &);
78 bool notifyOnValueChanged() const;
79 void setNotifyOnValueChanged(bool);
81 QString sourceFile() const;
82 int lineNumber() const;
83 void setSourceLocation(const QString &fileName, int line);
85 QObject *scopeObject() const;
87 bool hasError() const;
89 QDeclarativeError error() const;
91 QVariant evaluate(bool *valueIsUndefined = 0);
97 QDeclarativeExpression(QDeclarativeContextData *, QObject *, const QString &,
98 QDeclarativeExpressionPrivate &dd);
99 QDeclarativeExpression(QDeclarativeContextData *, QObject *, void *,
100 QDeclarativeExpressionPrivate &dd);
101 QDeclarativeExpression(QDeclarativeContextData *, QObject *, const QString &, bool,
102 const QString &, int, QDeclarativeExpressionPrivate &dd);
105 QDeclarativeExpression(QDeclarativeContextData *, QObject *, const QString &);
107 Q_DISABLE_COPY(QDeclarativeExpression)
108 Q_DECLARE_PRIVATE(QDeclarativeExpression)
109 Q_PRIVATE_SLOT(d_func(), void _q_notify())
110 friend class QDeclarativeDebugger;
111 friend class QDeclarativeContext;
112 friend class QDeclarativeVME;
119 #endif // QDECLARATIVEEXPRESSION_H