summaryrefslogtreecommitdiffstats
path: root/src/declarative/qml/qdeclarativepropertycache_p.h
blob: c648d25cb7c502ae3310b3dbc1011ae38c757318 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QDECLARATIVEPROPERTYCACHE_P_H
#define QDECLARATIVEPROPERTYCACHE_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "private/qdeclarativerefcount_p.h"
#include "private/qdeclarativecleanup_p.h"
#include "private/qdeclarativenotifier_p.h"

#include <QtCore/qvector.h>

#include <QtScript/private/qscriptdeclarativeclass_p.h>
QT_BEGIN_NAMESPACE

class QDeclarativeEngine;
class QMetaProperty;

class Q_AUTOTEST_EXPORT QDeclarativePropertyCache : public QDeclarativeRefCount, public QDeclarativeCleanup
{
public:
    QDeclarativePropertyCache(QDeclarativeEngine *);
    QDeclarativePropertyCache(QDeclarativeEngine *, const QMetaObject *);
    virtual ~QDeclarativePropertyCache();

    struct Data {
        inline Data(); 
        inline bool operator==(const Data &);

        enum Flag { 
                    NoFlags           = 0x00000000,

                    // Can apply to all properties, except IsFunction
                    IsConstant        = 0x00000001,
                    IsWritable        = 0x00000002,
                    IsResettable      = 0x00000004,
                    IsAlias           = 0x00000008,

                    // These are mutualy exclusive
                    IsFunction        = 0x00000010,
                    IsQObjectDerived  = 0x00000020,
                    IsEnumType        = 0x00000040,
                    IsQList           = 0x00000080,
                    IsQmlBinding      = 0x00000100,
                    IsQScriptValue    = 0x00000200,

                    // Apply only to IsFunctions
                    IsVMEFunction     = 0x00000400,
                    HasArguments      = 0x00000800,
                    IsSignal          = 0x00001000,
                    IsVMESignal       = 0x00002000
        };
        Q_DECLARE_FLAGS(Flags, Flag)

        bool isValid() const { return coreIndex != -1; } 

        Flags flags;
        int propType;
        int coreIndex;
        union {
            int notifyIndex; // When !IsFunction
            int relatedIndex; // When IsFunction
        };
        uint overrideIndexIsProperty : 1;
        signed int overrideIndex : 31;
        int revision; 
        int metaObjectOffset;

        static Flags flagsForProperty(const QMetaProperty &, QDeclarativeEngine *engine = 0);
        void load(const QMetaProperty &, QDeclarativeEngine *engine = 0);
        void load(const QMetaMethod &);
        QString name(QObject *);
        QString name(const QMetaObject *);
    };

    struct ValueTypeData {
        inline ValueTypeData();
        inline bool operator==(const ValueTypeData &);
        Data::Flags flags;     // flags of the access property on the value type proxy object
        int valueTypeCoreIdx;  // The prop index of the access property on the value type proxy object
        int valueTypePropType; // The QVariant::Type of access property on the value type proxy object
    };

    void update(QDeclarativeEngine *, const QMetaObject *);

    QDeclarativePropertyCache *copy() const;
    void append(QDeclarativeEngine *, const QMetaObject *, Data::Flag propertyFlags = Data::NoFlags,
                Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags);
    void append(QDeclarativeEngine *, const QMetaObject *, int revision, Data::Flag propertyFlags = Data::NoFlags,
                Data::Flag methodFlags = Data::NoFlags, Data::Flag signalFlags = Data::NoFlags);

    static Data create(const QMetaObject *, const QString &);

    inline Data *property(const QScriptDeclarativeClass::Identifier &id) const;
    Data *property(const QString &) const;
    Data *property(int) const;
    Data *method(int) const;
    QStringList propertyNames() const;

    inline Data *overrideData(Data *) const;
    inline bool isAllowedInRevision(Data *) const;

    inline QDeclarativeEngine *qmlEngine() const;
    static Data *property(QDeclarativeEngine *, QObject *, const QScriptDeclarativeClass::Identifier &, Data &);
    static Data *property(QDeclarativeEngine *, QObject *, const QString &, Data &);

protected:
    virtual void clear();

private:
    friend class QDeclarativeEnginePrivate;

    struct RData : public Data, public QDeclarativeRefCount { 
        QScriptDeclarativeClass::PersistentIdentifier identifier;
    };

    typedef QVector<RData *> IndexCache;
    typedef QHash<QString, RData *> StringCache;
    typedef QHash<QScriptDeclarativeClass::Identifier, RData *> IdentifierCache;
    typedef QVector<int> AllowedRevisionCache;

    void updateRecur(QDeclarativeEngine *, const QMetaObject *);

    QDeclarativeEngine *engine;
    IndexCache indexCache;
    IndexCache methodIndexCache;
    StringCache stringCache;
    IdentifierCache identifierCache;
    AllowedRevisionCache allowedRevisionCache;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QDeclarativePropertyCache::Data::Flags);
  
QDeclarativePropertyCache::Data::Data()
: flags(0), propType(0), coreIndex(-1), notifyIndex(-1), overrideIndexIsProperty(false), overrideIndex(-1),
  revision(0), metaObjectOffset(-1)
{
}

bool QDeclarativePropertyCache::Data::operator==(const QDeclarativePropertyCache::Data &other)
{
    return flags == other.flags &&
           propType == other.propType &&
           coreIndex == other.coreIndex &&
           notifyIndex == other.notifyIndex &&
           revision == other.revision;
}

QDeclarativePropertyCache::Data *
QDeclarativePropertyCache::overrideData(Data *data) const
{
    if (data->overrideIndex < 0)
        return 0;

    if (data->overrideIndexIsProperty)
        return indexCache.at(data->overrideIndex);
    else
        return methodIndexCache.at(data->overrideIndex);
}

QDeclarativePropertyCache::Data *
QDeclarativePropertyCache::property(const QScriptDeclarativeClass::Identifier &id) const 
{
    return identifierCache.value(id);
}

QDeclarativePropertyCache::ValueTypeData::ValueTypeData()
: flags(QDeclarativePropertyCache::Data::NoFlags), valueTypeCoreIdx(-1), valueTypePropType(0) 
{
}

bool QDeclarativePropertyCache::ValueTypeData::operator==(const ValueTypeData &o) 
{ 
    return flags == o.flags &&
           valueTypeCoreIdx == o.valueTypeCoreIdx &&
           valueTypePropType == o.valueTypePropType; 
}

bool QDeclarativePropertyCache::isAllowedInRevision(Data *data) const
{
    return (data->metaObjectOffset == -1 && data->revision == 0) ||
           (allowedRevisionCache[data->metaObjectOffset] >= data->revision);
}

QDeclarativeEngine *QDeclarativePropertyCache::qmlEngine() const
{
    return engine;
}

QT_END_NAMESPACE

#endif // QDECLARATIVEPROPERTYCACHE_P_H