1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtDeclarative module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser General Public
11 ** License version 2.1 as published by the Free Software Foundation and
12 ** appearing in the file LICENSE.LGPL included in the packaging of this
13 ** file. Please review the following information to ensure the GNU Lesser
14 ** General Public License version 2.1 requirements will be met:
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17 ** In addition, as a special exception, Nokia gives you certain additional
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19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
21 ** GNU General Public License Usage
22 ** Alternatively, this file may be used under the terms of the GNU General
23 ** Public License version 3.0 as published by the Free Software Foundation
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25 ** 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>
57 class QDeclarativeRefCount;
58 class QDeclarativeEngine;
59 class QDeclarativeContext;
60 class QDeclarativeExpressionPrivate;
61 class QDeclarativeContextData;
62 class Q_DECLARATIVE_EXPORT QDeclarativeExpression : public QObject
66 QDeclarativeExpression();
67 QDeclarativeExpression(QDeclarativeContext *, QObject *, const QString &, QObject * = 0);
68 explicit QDeclarativeExpression(const QDeclarativeScriptString &, 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 int columnNumber() const;
83 void setSourceLocation(const QString &fileName, int line, int column = 0);
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, int, QDeclarativeExpressionPrivate &dd);
105 QDeclarativeExpression(QDeclarativeContextData *, QObject *, const QString &);
107 Q_DISABLE_COPY(QDeclarativeExpression)
108 Q_DECLARE_PRIVATE(QDeclarativeExpression)
109 friend class QDeclarativeDebugger;
110 friend class QDeclarativeContext;
111 friend class QDeclarativeVME;
118 #endif // QDECLARATIVEEXPRESSION_H