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
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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 #include "qdeclarativeopenmetaobject_p.h"
43 #include <private/qdeclarativepropertycache_p.h>
44 #include <private/qdeclarativedata_p.h>
45 #include <private/qmetaobjectbuilder_p.h>
51 class QDeclarativeOpenMetaObjectTypePrivate
54 QDeclarativeOpenMetaObjectTypePrivate() : mem(0), cache(0), engine(0) {}
56 void init(const QMetaObject *metaObj);
60 QHash<QByteArray, int> names;
61 QMetaObjectBuilder mob;
63 QDeclarativePropertyCache *cache;
64 QDeclarativeEngine *engine;
65 QSet<QDeclarativeOpenMetaObject*> referers;
68 QDeclarativeOpenMetaObjectType::QDeclarativeOpenMetaObjectType(const QMetaObject *base, QDeclarativeEngine *engine)
69 : QDeclarativeCleanup(engine), d(new QDeclarativeOpenMetaObjectTypePrivate)
75 QDeclarativeOpenMetaObjectType::~QDeclarativeOpenMetaObjectType()
84 void QDeclarativeOpenMetaObjectType::clear()
89 int QDeclarativeOpenMetaObjectType::propertyOffset() const
91 return d->propertyOffset;
94 int QDeclarativeOpenMetaObjectType::signalOffset() const
96 return d->signalOffset;
99 int QDeclarativeOpenMetaObjectType::createProperty(const QByteArray &name)
101 int id = d->mob.propertyCount();
102 d->mob.addSignal("__" + QByteArray::number(id) + "()");
103 QMetaPropertyBuilder build = d->mob.addProperty(name, "QVariant", id);
104 propertyCreated(id, build);
106 d->mem = d->mob.toMetaObject();
107 d->names.insert(name, id);
108 QSet<QDeclarativeOpenMetaObject*>::iterator it = d->referers.begin();
109 while (it != d->referers.end()) {
110 QDeclarativeOpenMetaObject *omo = *it;
111 *static_cast<QMetaObject *>(omo) = *d->mem;
113 d->cache->update(d->engine, omo);
117 return d->propertyOffset + id;
120 void QDeclarativeOpenMetaObjectType::propertyCreated(int id, QMetaPropertyBuilder &builder)
122 if (d->referers.count())
123 (*d->referers.begin())->propertyCreated(id, builder);
126 void QDeclarativeOpenMetaObjectTypePrivate::init(const QMetaObject *metaObj)
129 mob.setSuperClass(metaObj);
130 mob.setClassName(metaObj->className());
131 mob.setFlags(QMetaObjectBuilder::DynamicMetaObject);
133 mem = mob.toMetaObject();
135 propertyOffset = mem->propertyOffset();
136 signalOffset = mem->methodOffset();
140 //----------------------------------------------------------------------------
142 class QDeclarativeOpenMetaObjectPrivate
145 QDeclarativeOpenMetaObjectPrivate(QDeclarativeOpenMetaObject *_q)
146 : q(_q), parent(0), type(0), cacheProperties(false) {}
148 inline QVariant &getData(int idx) {
149 while (data.count() <= idx)
150 data << QPair<QVariant, bool>(QVariant(), false);
151 QPair<QVariant, bool> &prop = data[idx];
153 prop.first = q->initialValue(idx);
159 inline void writeData(int idx, const QVariant &value) {
160 while (data.count() <= idx)
161 data << QPair<QVariant, bool>(QVariant(), false);
162 QPair<QVariant, bool> &prop = data[idx];
167 inline bool hasData(int idx) const {
168 if (idx >= data.count())
170 return data[idx].second;
174 QDeclarativeOpenMetaObject *q;
175 QAbstractDynamicMetaObject *parent;
176 QList<QPair<QVariant, bool> > data;
178 QDeclarativeOpenMetaObjectType *type;
179 bool cacheProperties;
182 QDeclarativeOpenMetaObject::QDeclarativeOpenMetaObject(QObject *obj, bool automatic)
183 : d(new QDeclarativeOpenMetaObjectPrivate(this))
185 d->autoCreate = automatic;
188 d->type = new QDeclarativeOpenMetaObjectType(obj->metaObject(), 0);
189 d->type->d->referers.insert(this);
191 QObjectPrivate *op = QObjectPrivate::get(obj);
192 d->parent = static_cast<QAbstractDynamicMetaObject *>(op->metaObject);
193 *static_cast<QMetaObject *>(this) = *d->type->d->mem;
194 op->metaObject = this;
197 QDeclarativeOpenMetaObject::QDeclarativeOpenMetaObject(QObject *obj, QDeclarativeOpenMetaObjectType *type, bool automatic)
198 : d(new QDeclarativeOpenMetaObjectPrivate(this))
200 d->autoCreate = automatic;
205 d->type->d->referers.insert(this);
207 QObjectPrivate *op = QObjectPrivate::get(obj);
208 d->parent = static_cast<QAbstractDynamicMetaObject *>(op->metaObject);
209 *static_cast<QMetaObject *>(this) = *d->type->d->mem;
210 op->metaObject = this;
213 QDeclarativeOpenMetaObject::~QDeclarativeOpenMetaObject()
217 d->type->d->referers.remove(this);
222 QDeclarativeOpenMetaObjectType *QDeclarativeOpenMetaObject::type() const
227 int QDeclarativeOpenMetaObject::metaCall(QMetaObject::Call c, int id, void **a)
229 if (( c == QMetaObject::ReadProperty || c == QMetaObject::WriteProperty)
230 && id >= d->type->d->propertyOffset) {
231 int propId = id - d->type->d->propertyOffset;
232 if (c == QMetaObject::ReadProperty) {
233 propertyRead(propId);
234 *reinterpret_cast<QVariant *>(a[0]) = d->getData(propId);
235 } else if (c == QMetaObject::WriteProperty) {
236 if (propId <= d->data.count() || d->data[propId].first != *reinterpret_cast<QVariant *>(a[0])) {
237 propertyWrite(propId);
238 d->writeData(propId, *reinterpret_cast<QVariant *>(a[0]));
239 propertyWritten(propId);
240 activate(d->object, d->type->d->signalOffset + propId, 0);
246 return d->parent->metaCall(c, id, a);
248 return d->object->qt_metacall(c, id, a);
252 QAbstractDynamicMetaObject *QDeclarativeOpenMetaObject::parent() const
257 QVariant QDeclarativeOpenMetaObject::value(int id) const
259 return d->getData(id);
262 void QDeclarativeOpenMetaObject::setValue(int id, const QVariant &value)
264 d->writeData(id, value);
265 activate(d->object, id + d->type->d->signalOffset, 0);
268 QVariant QDeclarativeOpenMetaObject::value(const QByteArray &name) const
270 QHash<QByteArray, int>::ConstIterator iter = d->type->d->names.find(name);
271 if (iter == d->type->d->names.end())
274 return d->getData(*iter);
277 QVariant &QDeclarativeOpenMetaObject::operator[](const QByteArray &name)
279 QHash<QByteArray, int>::ConstIterator iter = d->type->d->names.find(name);
280 Q_ASSERT(iter != d->type->d->names.end());
282 return d->getData(*iter);
285 QVariant &QDeclarativeOpenMetaObject::operator[](int id)
287 return d->getData(id);
290 bool QDeclarativeOpenMetaObject::setValue(const QByteArray &name, const QVariant &val)
292 QHash<QByteArray, int>::ConstIterator iter = d->type->d->names.find(name);
295 if (iter == d->type->d->names.end()) {
296 id = createProperty(name.constData(), "") - d->type->d->propertyOffset;
302 QVariant &dataVal = d->getData(id);
307 activate(d->object, id + d->type->d->signalOffset, 0);
314 // returns true if this value has been initialized by a call to either value() or setValue()
315 bool QDeclarativeOpenMetaObject::hasValue(int id) const
317 return d->hasData(id);
320 void QDeclarativeOpenMetaObject::setCached(bool c)
322 if (c == d->cacheProperties || !d->type->d->engine)
325 d->cacheProperties = c;
327 QDeclarativeData *qmldata = QDeclarativeData::get(d->object, true);
328 if (d->cacheProperties) {
329 if (!d->type->d->cache)
330 d->type->d->cache = new QDeclarativePropertyCache(d->type->d->engine, this);
331 qmldata->propertyCache = d->type->d->cache;
332 d->type->d->cache->addref();
334 if (d->type->d->cache)
335 d->type->d->cache->release();
336 qmldata->propertyCache = 0;
341 int QDeclarativeOpenMetaObject::createProperty(const char *name, const char *)
344 return d->type->createProperty(name);
349 void QDeclarativeOpenMetaObject::propertyRead(int)
353 void QDeclarativeOpenMetaObject::propertyWrite(int)
357 void QDeclarativeOpenMetaObject::propertyWritten(int)
361 void QDeclarativeOpenMetaObject::propertyCreated(int, QMetaPropertyBuilder &)
365 QVariant QDeclarativeOpenMetaObject::initialValue(int)
370 int QDeclarativeOpenMetaObject::count() const
372 return d->type->d->names.count();
375 QByteArray QDeclarativeOpenMetaObject::name(int idx) const
377 Q_ASSERT(idx >= 0 && idx < d->type->d->names.count());
379 return d->type->d->mob.property(idx).name();
382 QObject *QDeclarativeOpenMetaObject::object() const