src/corelib/kernel/qmetaobject.h
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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 (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtCore module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #ifndef QMETAOBJECT_H
       
    43 #define QMETAOBJECT_H
       
    44 
       
    45 #include <QtCore/qobjectdefs.h>
       
    46 #include <QtCore/qvariant.h>
       
    47 
       
    48 QT_BEGIN_HEADER
       
    49 
       
    50 QT_BEGIN_NAMESPACE
       
    51 
       
    52 QT_MODULE(Core)
       
    53 
       
    54 template <typename T> class QList;
       
    55 
       
    56 class Q_CORE_EXPORT QMetaMethod
       
    57 {
       
    58 public:
       
    59     inline QMetaMethod() : mobj(0),handle(0) {}
       
    60 
       
    61     const char *signature() const;
       
    62     const char *typeName() const;
       
    63     QList<QByteArray> parameterTypes() const;
       
    64     QList<QByteArray> parameterNames() const;
       
    65     const char *tag() const;
       
    66     enum Access { Private, Protected, Public };
       
    67     Access access() const;
       
    68     enum MethodType { Method, Signal, Slot, Constructor };
       
    69     MethodType methodType() const;
       
    70     enum Attributes { Compatibility = 0x1, Cloned = 0x2, Scriptable = 0x4 };
       
    71     int attributes() const;
       
    72     int methodIndex() const;
       
    73 
       
    74     inline const QMetaObject *enclosingMetaObject() const { return mobj; }
       
    75 
       
    76     bool invoke(QObject *object,
       
    77                 Qt::ConnectionType connectionType,
       
    78                 QGenericReturnArgument returnValue,
       
    79                 QGenericArgument val0 = QGenericArgument(0),
       
    80                 QGenericArgument val1 = QGenericArgument(),
       
    81                 QGenericArgument val2 = QGenericArgument(),
       
    82                 QGenericArgument val3 = QGenericArgument(),
       
    83                 QGenericArgument val4 = QGenericArgument(),
       
    84                 QGenericArgument val5 = QGenericArgument(),
       
    85                 QGenericArgument val6 = QGenericArgument(),
       
    86                 QGenericArgument val7 = QGenericArgument(),
       
    87                 QGenericArgument val8 = QGenericArgument(),
       
    88                 QGenericArgument val9 = QGenericArgument()) const;
       
    89     inline bool invoke(QObject *object,
       
    90                        QGenericReturnArgument returnValue,
       
    91                        QGenericArgument val0 = QGenericArgument(0),
       
    92                        QGenericArgument val1 = QGenericArgument(),
       
    93                        QGenericArgument val2 = QGenericArgument(),
       
    94                        QGenericArgument val3 = QGenericArgument(),
       
    95                        QGenericArgument val4 = QGenericArgument(),
       
    96                        QGenericArgument val5 = QGenericArgument(),
       
    97                        QGenericArgument val6 = QGenericArgument(),
       
    98                        QGenericArgument val7 = QGenericArgument(),
       
    99                        QGenericArgument val8 = QGenericArgument(),
       
   100                        QGenericArgument val9 = QGenericArgument()) const
       
   101     {
       
   102         return invoke(object, Qt::AutoConnection, returnValue,
       
   103                       val0, val1, val2, val3, val4, val5, val6, val7, val8, val9);
       
   104     }
       
   105     inline bool invoke(QObject *object,
       
   106                        Qt::ConnectionType connectionType,
       
   107                        QGenericArgument val0 = QGenericArgument(0),
       
   108                        QGenericArgument val1 = QGenericArgument(),
       
   109                        QGenericArgument val2 = QGenericArgument(),
       
   110                        QGenericArgument val3 = QGenericArgument(),
       
   111                        QGenericArgument val4 = QGenericArgument(),
       
   112                        QGenericArgument val5 = QGenericArgument(),
       
   113                        QGenericArgument val6 = QGenericArgument(),
       
   114                        QGenericArgument val7 = QGenericArgument(),
       
   115                        QGenericArgument val8 = QGenericArgument(),
       
   116                        QGenericArgument val9 = QGenericArgument()) const
       
   117     {
       
   118         return invoke(object, connectionType, QGenericReturnArgument(),
       
   119                       val0, val1, val2, val3, val4, val5, val6, val7, val8, val9);
       
   120     }
       
   121     inline bool invoke(QObject *object,
       
   122                        QGenericArgument val0 = QGenericArgument(0),
       
   123                        QGenericArgument val1 = QGenericArgument(),
       
   124                        QGenericArgument val2 = QGenericArgument(),
       
   125                        QGenericArgument val3 = QGenericArgument(),
       
   126                        QGenericArgument val4 = QGenericArgument(),
       
   127                        QGenericArgument val5 = QGenericArgument(),
       
   128                        QGenericArgument val6 = QGenericArgument(),
       
   129                        QGenericArgument val7 = QGenericArgument(),
       
   130                        QGenericArgument val8 = QGenericArgument(),
       
   131                        QGenericArgument val9 = QGenericArgument()) const
       
   132     {
       
   133         return invoke(object, Qt::AutoConnection, QGenericReturnArgument(),
       
   134                       val0, val1, val2, val3, val4, val5, val6, val7, val8, val9);
       
   135     }
       
   136 
       
   137 private:
       
   138     const QMetaObject *mobj;
       
   139     uint handle;
       
   140     friend struct QMetaObject;
       
   141 };
       
   142 Q_DECLARE_TYPEINFO(QMetaMethod, Q_MOVABLE_TYPE);
       
   143 
       
   144 class Q_CORE_EXPORT QMetaEnum
       
   145 {
       
   146 public:
       
   147     inline QMetaEnum() : mobj(0),handle(0) {}
       
   148 
       
   149     const char *name() const;
       
   150     bool isFlag() const;
       
   151 
       
   152     int keyCount() const;
       
   153     const char *key(int index) const;
       
   154     int value(int index) const;
       
   155 
       
   156     const char *scope() const;
       
   157 
       
   158     int keyToValue(const char *key) const;
       
   159     const char* valueToKey(int value) const;
       
   160     int keysToValue(const char * keys) const;
       
   161     QByteArray valueToKeys(int value) const;
       
   162 
       
   163     inline const QMetaObject *enclosingMetaObject() const { return mobj; }
       
   164 
       
   165     inline bool isValid() const { return name() != 0; }
       
   166 private:
       
   167     const QMetaObject *mobj;
       
   168     uint handle;
       
   169     friend struct QMetaObject;
       
   170 };
       
   171 Q_DECLARE_TYPEINFO(QMetaEnum, Q_MOVABLE_TYPE);
       
   172 
       
   173 class Q_CORE_EXPORT QMetaProperty
       
   174 {
       
   175 public:
       
   176     QMetaProperty();
       
   177 
       
   178     const char *name() const;
       
   179     const char *typeName() const;
       
   180     QVariant::Type type() const;
       
   181     int userType() const;
       
   182     int propertyIndex() const;
       
   183 
       
   184     bool isReadable() const;
       
   185     bool isWritable() const;
       
   186     bool isResettable() const;
       
   187     bool isDesignable(const QObject *obj = 0) const;
       
   188     bool isScriptable(const QObject *obj = 0) const;
       
   189     bool isStored(const QObject *obj = 0) const;
       
   190     bool isEditable(const QObject *obj = 0) const;
       
   191     bool isUser(const QObject *obj = 0) const;
       
   192     bool isConstant() const;
       
   193     bool isFinal() const;
       
   194 
       
   195     bool isFlagType() const;
       
   196     bool isEnumType() const;
       
   197     QMetaEnum enumerator() const;
       
   198 
       
   199     bool hasNotifySignal() const;
       
   200     QMetaMethod notifySignal() const;
       
   201     int notifySignalIndex() const;
       
   202 
       
   203     QVariant read(const QObject *obj) const;
       
   204     bool write(QObject *obj, const QVariant &value) const;
       
   205     bool reset(QObject *obj) const;
       
   206 
       
   207     bool hasStdCppSet() const;
       
   208     inline bool isValid() const { return isReadable(); }
       
   209     inline const QMetaObject *enclosingMetaObject() const { return mobj; }
       
   210 
       
   211 private:
       
   212     const QMetaObject *mobj;
       
   213     uint handle;
       
   214     int idx;
       
   215     QMetaEnum menum;
       
   216     friend struct QMetaObject;
       
   217 };
       
   218 
       
   219 class Q_CORE_EXPORT QMetaClassInfo
       
   220 {
       
   221 public:
       
   222     inline QMetaClassInfo() : mobj(0),handle(0) {}
       
   223     const char *name() const;
       
   224     const char *value() const;
       
   225     inline const QMetaObject *enclosingMetaObject() const { return mobj; }
       
   226 private:
       
   227     const QMetaObject *mobj;
       
   228     uint handle;
       
   229     friend struct QMetaObject;
       
   230 };
       
   231 Q_DECLARE_TYPEINFO(QMetaClassInfo, Q_MOVABLE_TYPE);
       
   232 
       
   233 QT_END_NAMESPACE
       
   234 
       
   235 QT_END_HEADER
       
   236 
       
   237 #endif // QMETAOBJECT_H