src/declarative/qml/qdeclarativevmemetaobject.cpp

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  41
  42 #include "private/qdeclarativevmemetaobject_p.h"
  43
  44 #include "qdeclarative.h"
  45 #include "private/qdeclarativerefcount_p.h"
  46 #include "qdeclarativeexpression.h"
  47 #include "private/qdeclarativeexpression_p.h"
  48 #include "private/qdeclarativecontext_p.h"
  49 #include "private/qdeclarativebinding_p.h"
  50
  51 Q_DECLARE_METATYPE(QScriptValue);
  52
  53 QT_BEGIN_NAMESPACE
  54
  55 class QDeclarativeVMEVariant
  56 {
  57 public:
  58     inline QDeclarativeVMEVariant();
  59     inline ~QDeclarativeVMEVariant();
  60
  61     inline const void *dataPtr() const;
  62     inline void *dataPtr();
  63     inline int dataType() const;
  64
  65     inline QObject *asQObject();
  66     inline const QVariant &asQVariant();
  67     inline int asInt();
  68     inline bool asBool();
  69     inline double asDouble();
  70     inline const QString &asQString();
  71     inline const QUrl &asQUrl();
  72     inline const QColor &asQColor();
  73     inline const QTime &asQTime();
  74     inline const QDate &asQDate();
  75     inline const QDateTime &asQDateTime();
  76     inline const QScriptValue &asQScriptValue();
  77
  78     inline void setValue(QObject *);
  79     inline void setValue(const QVariant &);
  80     inline void setValue(int);
  81     inline void setValue(bool);
  82     inline void setValue(double);
  83     inline void setValue(const QString &);
  84     inline void setValue(const QUrl &);
  85     inline void setValue(const QColor &);
  86     inline void setValue(const QTime &);
  87     inline void setValue(const QDate &);
  88     inline void setValue(const QDateTime &);
  89     inline void setValue(const QScriptValue &);
  90 private:
  91     int type;
  92     void *data[4]; // Large enough to hold all types
  93
  94     inline void cleanup();
  95 };
  96
  97 QDeclarativeVMEVariant::QDeclarativeVMEVariant()
  98 : type(QVariant::Invalid)
  99 {
 100 }
 101
 102 QDeclarativeVMEVariant::~QDeclarativeVMEVariant()
 103 {
 104     cleanup();
 105 }
 106
 107 void QDeclarativeVMEVariant::cleanup()
 108 {
 109     if (type == QVariant::Invalid) {
 110     } else if (type == QMetaType::Int ||
 111                type == QMetaType::Bool ||
 112                type == QMetaType::Double) {
 113         type = QVariant::Invalid;
 114     } else if (type == QMetaType::QObjectStar) {
 115         ((QDeclarativeGuard<QObject>*)dataPtr())->~QDeclarativeGuard<QObject>();
 116         type = QVariant::Invalid;
 117     } else if (type == QMetaType::QString) {
 118         ((QString *)dataPtr())->~QString();
 119         type = QVariant::Invalid;
 120     } else if (type == QMetaType::QUrl) {
 121         ((QUrl *)dataPtr())->~QUrl();
 122         type = QVariant::Invalid;
 123     } else if (type == QMetaType::QColor) {
 124         ((QColor *)dataPtr())->~QColor();
 125         type = QVariant::Invalid;
 126     } else if (type == QMetaType::QTime) {
 127         ((QTime *)dataPtr())->~QTime();
 128         type = QVariant::Invalid;
 129     } else if (type == QMetaType::QDate) {
 130         ((QDate *)dataPtr())->~QDate();
 131         type = QVariant::Invalid;
 132     } else if (type == QMetaType::QDateTime) {
 133         ((QDateTime *)dataPtr())->~QDateTime();
 134         type = QVariant::Invalid;
 135     } else if (type == qMetaTypeId<QVariant>()) {
 136         ((QVariant *)dataPtr())->~QVariant();
 137         type = QVariant::Invalid;
 138     } else if (type == qMetaTypeId<QScriptValue>()) {
 139         ((QScriptValue *)dataPtr())->~QScriptValue();
 140         type = QVariant::Invalid;
 141     }
 142
 143 }
 144
 145 int QDeclarativeVMEVariant::dataType() const
 146 {
 147     return type;
 148 }
 149
 150 const void *QDeclarativeVMEVariant::dataPtr() const
 151 {
 152     return &data;
 153 }
 154
 155 void *QDeclarativeVMEVariant::dataPtr()
 156 {
 157     return &data;
 158 }
 159
 160 QObject *QDeclarativeVMEVariant::asQObject()
 161 {
 162     if (type != QMetaType::QObjectStar)
 163         setValue((QObject *)0);
 164
 165     return *(QDeclarativeGuard<QObject> *)(dataPtr());
 166 }
 167
 168 const QVariant &QDeclarativeVMEVariant::asQVariant()
 169 {
 170     if (type != QMetaType::QVariant)
 171         setValue(QVariant());
 172
 173     return *(QVariant *)(dataPtr());
 174 }
 175
 176 int QDeclarativeVMEVariant::asInt()
 177 {
 178     if (type != QMetaType::Int)
 179         setValue(int(0));
 180
 181     return *(int *)(dataPtr());
 182 }
 183
 184 bool QDeclarativeVMEVariant::asBool()
 185 {
 186     if (type != QMetaType::Bool)
 187         setValue(bool(false));
 188
 189     return *(bool *)(dataPtr());
 190 }
 191
 192 double QDeclarativeVMEVariant::asDouble()
 193 {
 194     if (type != QMetaType::Double)
 195         setValue(double(0));
 196
 197     return *(double *)(dataPtr());
 198 }
 199
 200 const QString &QDeclarativeVMEVariant::asQString()
 201 {
 202     if (type != QMetaType::QString)
 203         setValue(QString());
 204
 205     return *(QString *)(dataPtr());
 206 }
 207
 208 const QUrl &QDeclarativeVMEVariant::asQUrl()
 209 {
 210     if (type != QMetaType::QUrl)
 211         setValue(QUrl());
 212
 213     return *(QUrl *)(dataPtr());
 214 }
 215
 216 const QColor &QDeclarativeVMEVariant::asQColor()
 217 {
 218     if (type != QMetaType::QColor)
 219         setValue(QColor());
 220
 221     return *(QColor *)(dataPtr());
 222 }
 223
 224 const QTime &QDeclarativeVMEVariant::asQTime()
 225 {
 226     if (type != QMetaType::QTime)
 227         setValue(QTime());
 228
 229     return *(QTime *)(dataPtr());
 230 }
 231
 232 const QDate &QDeclarativeVMEVariant::asQDate()
 233 {
 234     if (type != QMetaType::QDate)
 235         setValue(QDate());
 236
 237     return *(QDate *)(dataPtr());
 238 }
 239
 240 const QDateTime &QDeclarativeVMEVariant::asQDateTime()
 241 {
 242     if (type != QMetaType::QDateTime)
 243         setValue(QDateTime());
 244
 245     return *(QDateTime *)(dataPtr());
 246 }
 247
 248 const QScriptValue &QDeclarativeVMEVariant::asQScriptValue()
 249 {
 250     if (type != qMetaTypeId<QScriptValue>())
 251         setValue(QScriptValue());
 252
 253     return *(QScriptValue *)(dataPtr());
 254 }
 255
 256 void QDeclarativeVMEVariant::setValue(QObject *v)
 257 {
 258     if (type != QMetaType::QObjectStar) {
 259         cleanup();
 260         type = QMetaType::QObjectStar;
 261         new (dataPtr()) QDeclarativeGuard<QObject>();
 262     }
 263     *(QDeclarativeGuard<QObject>*)(dataPtr()) = v;
 264 }
 265
 266 void QDeclarativeVMEVariant::setValue(const QVariant &v)
 267 {
 268     if (type != qMetaTypeId<QVariant>()) {
 269         cleanup();
 270         type = qMetaTypeId<QVariant>();
 271         new (dataPtr()) QVariant(v);
 272     } else {
 273         *(QVariant *)(dataPtr()) = v;
 274     }
 275 }
 276
 277 void QDeclarativeVMEVariant::setValue(int v)
 278 {
 279     if (type != QMetaType::Int) {
 280         cleanup();
 281         type = QMetaType::Int;
 282     }
 283     *(int *)(dataPtr()) = v;
 284 }
 285
 286 void QDeclarativeVMEVariant::setValue(bool v)
 287 {
 288     if (type != QMetaType::Bool) {
 289         cleanup();
 290         type = QMetaType::Bool;
 291     }
 292     *(bool *)(dataPtr()) = v;
 293 }
 294
 295 void QDeclarativeVMEVariant::setValue(double v)
 296 {
 297     if (type != QMetaType::Double) {
 298         cleanup();
 299         type = QMetaType::Double;
 300     }
 301     *(double *)(dataPtr()) = v;
 302 }
 303
 304 void QDeclarativeVMEVariant::setValue(const QString &v)
 305 {
 306     if (type != QMetaType::QString) {
 307         cleanup();
 308         type = QMetaType::QString;
 309         new (dataPtr()) QString(v);
 310     } else {
 311         *(QString *)(dataPtr()) = v;
 312     }
 313 }
 314
 315 void QDeclarativeVMEVariant::setValue(const QUrl &v)
 316 {
 317     if (type != QMetaType::QUrl) {
 318         cleanup();
 319         type = QMetaType::QUrl;
 320         new (dataPtr()) QUrl(v);
 321     } else {
 322         *(QUrl *)(dataPtr()) = v;
 323     }
 324 }
 325
 326 void QDeclarativeVMEVariant::setValue(const QColor &v)
 327 {
 328     if (type != QMetaType::QColor) {
 329         cleanup();
 330         type = QMetaType::QColor;
 331         new (dataPtr()) QColor(v);
 332     } else {
 333         *(QColor *)(dataPtr()) = v;
 334     }
 335 }
 336
 337 void QDeclarativeVMEVariant::setValue(const QTime &v)
 338 {
 339     if (type != QMetaType::QTime) {
 340         cleanup();
 341         type = QMetaType::QTime;
 342         new (dataPtr()) QTime(v);
 343     } else {
 344         *(QTime *)(dataPtr()) = v;
 345     }
 346 }
 347
 348 void QDeclarativeVMEVariant::setValue(const QDate &v)
 349 {
 350     if (type != QMetaType::QDate) {
 351         cleanup();
 352         type = QMetaType::QDate;
 353         new (dataPtr()) QDate(v);
 354     } else {
 355         *(QDate *)(dataPtr()) = v;
 356     }
 357 }
 358
 359 void QDeclarativeVMEVariant::setValue(const QDateTime &v)
 360 {
 361     if (type != QMetaType::QDateTime) {
 362         cleanup();
 363         type = QMetaType::QDateTime;
 364         new (dataPtr()) QDateTime(v);
 365     } else {
 366         *(QDateTime *)(dataPtr()) = v;
 367     }
 368 }
 369
 370 void QDeclarativeVMEVariant::setValue(const QScriptValue &v)
 371 {
 372     if (type != qMetaTypeId<QScriptValue>()) {
 373         cleanup();
 374         type = qMetaTypeId<QScriptValue>();
 375         new (dataPtr()) QScriptValue(v);
 376     } else {
 377         *(QScriptValue *)(dataPtr()) = v;
 378     }
 379 }
 380
 381 QDeclarativeVMEMetaObject::QDeclarativeVMEMetaObject(QObject *obj,
 382                                                      const QMetaObject *other,
 383                                                      const QDeclarativeVMEMetaData *meta,
 384                                                      QDeclarativeCompiledData *cdata)
 385 : object(obj), compiledData(cdata), ctxt(QDeclarativeData::get(obj, true)->outerContext),
 386   metaData(meta), data(0), methods(0), parent(0)
 387 {
 388     compiledData->addref();
 389
 390     *static_cast<QMetaObject *>(this) = *other;
 391     this->d.superdata = obj->metaObject();
 392
 393     QObjectPrivate *op = QObjectPrivate::get(obj);
 394     if (op->metaObject)
 395         parent = static_cast<QAbstractDynamicMetaObject*>(op->metaObject);
 396     op->metaObject = this;
 397
 398     propOffset = QAbstractDynamicMetaObject::propertyOffset();
 399     methodOffset = QAbstractDynamicMetaObject::methodOffset();
 400
 401     data = new QDeclarativeVMEVariant[metaData->propertyCount];
 402
 403     aConnected.resize(metaData->aliasCount);
 404     int list_type = qMetaTypeId<QDeclarativeListProperty<QObject> >();
 405
 406     // ### Optimize
 407     for (int ii = 0; ii < metaData->propertyCount; ++ii) {
 408         int t = (metaData->propertyData() + ii)->propertyType;
 409         if (t == list_type) {
 410             listProperties.append(List(methodOffset + ii));
 411             data[ii].setValue(listProperties.count() - 1);
 412         }
 413     }
 414 }
 415
 416 QDeclarativeVMEMetaObject::~QDeclarativeVMEMetaObject()
 417 {
 418     compiledData->release();
 419     delete parent;
 420     delete [] data;
 421     delete [] methods;
 422 }
 423
 424 int QDeclarativeVMEMetaObject::metaCall(QMetaObject::Call c, int _id, void **a)
 425 {
 426     int id = _id;
 427     if(c == QMetaObject::WriteProperty) {
 428         int flags = *reinterpret_cast<int*>(a[3]);
 429         if (!(flags & QDeclarativePropertyPrivate::BypassInterceptor)
 430             && !aInterceptors.isEmpty()
 431             && aInterceptors.testBit(id)) {
 432             QPair<int, QDeclarativePropertyValueInterceptor*> pair = interceptors.value(id);
 433             int valueIndex = pair.first;
 434             QDeclarativePropertyValueInterceptor *vi = pair.second;
 435             int type = property(id).userType();
 436
 437             if (type != QVariant::Invalid) {
 438                 if (valueIndex != -1) {
 439                     QDeclarativeEnginePrivate *ep = ctxt?QDeclarativeEnginePrivate::get(ctxt->engine):0;
 440                     QDeclarativeValueType *valueType = 0;
 441                     if (ep) valueType = ep->valueTypes[type];
 442                     else valueType = QDeclarativeValueTypeFactory::valueType(type);
 443                     Q_ASSERT(valueType);
 444
 445                     valueType->setValue(QVariant(type, a[0]));
 446                     QMetaProperty valueProp = valueType->metaObject()->property(valueIndex);
 447                     vi->write(valueProp.read(valueType));
 448
 449                     if (!ep) delete valueType;
 450                     return -1;
 451                 } else {
 452                     vi->write(QVariant(type, a[0]));
 453                     return -1;
 454                 }
 455             }
 456         }
 457     }
 458     if(c == QMetaObject::ReadProperty || c == QMetaObject::WriteProperty) {
 459         if (id >= propOffset) {
 460             id -= propOffset;
 461
 462             if (id < metaData->propertyCount) {
 463                int t = (metaData->propertyData() + id)->propertyType;
 464                 bool needActivate = false;
 465
 466                 if (t == -1) {
 467
 468                     if (c == QMetaObject::ReadProperty) {
 469                         *reinterpret_cast<QVariant *>(a[0]) = readVarPropertyAsVariant(id);
 470                     } else if (c == QMetaObject::WriteProperty) {
 471                         writeVarProperty(id, *reinterpret_cast<QVariant *>(a[0]));
 472                     }
 473
 474                 } else {
 475
 476                     if (c == QMetaObject::ReadProperty) {
 477                         switch(t) {
 478                         case QVariant::Int:
 479                             *reinterpret_cast<int *>(a[0]) = data[id].asInt();
 480                             break;
 481                         case QVariant::Bool:
 482                             *reinterpret_cast<bool *>(a[0]) = data[id].asBool();
 483                             break;
 484                         case QVariant::Double:
 485                             *reinterpret_cast<double *>(a[0]) = data[id].asDouble();
 486                             break;
 487                         case QVariant::String:
 488                             *reinterpret_cast<QString *>(a[0]) = data[id].asQString();
 489                             break;
 490                         case QVariant::Url:
 491                             *reinterpret_cast<QUrl *>(a[0]) = data[id].asQUrl();
 492                             break;
 493                         case QVariant::Color:
 494                             *reinterpret_cast<QColor *>(a[0]) = data[id].asQColor();
 495                             break;
 496                         case QVariant::Date:
 497                             *reinterpret_cast<QDate *>(a[0]) = data[id].asQDate();
 498                             break;
 499                         case QVariant::DateTime:
 500                             *reinterpret_cast<QDateTime *>(a[0]) = data[id].asQDateTime();
 501                             break;
 502                         case QMetaType::QObjectStar:
 503                             *reinterpret_cast<QObject **>(a[0]) = data[id].asQObject();
 504                             break;
 505                         default:
 506                             break;
 507                         }
 508                         if (t == qMetaTypeId<QDeclarativeListProperty<QObject> >()) {
 509                             int listIndex = data[id].asInt();
 510                             const List *list = &listProperties.at(listIndex);
 511                             *reinterpret_cast<QDeclarativeListProperty<QObject> *>(a[0]) =
 512                                 QDeclarativeListProperty<QObject>(object, (void *)list,
 513                                                                   list_append, list_count, list_at,
 514                                                                   list_clear);
 515                         }
 516
 517                     } else if (c == QMetaObject::WriteProperty) {
 518
 519                         switch(t) {
 520                         case QVariant::Int:
 521                             needActivate = *reinterpret_cast<int *>(a[0]) != data[id].asInt();
 522                             data[id].setValue(*reinterpret_cast<int *>(a[0]));
 523                             break;
 524                         case QVariant::Bool:
 525                             needActivate = *reinterpret_cast<bool *>(a[0]) != data[id].asBool();
 526                             data[id].setValue(*reinterpret_cast<bool *>(a[0]));
 527                             break;
 528                         case QVariant::Double:
 529                             needActivate = *reinterpret_cast<double *>(a[0]) != data[id].asDouble();
 530                             data[id].setValue(*reinterpret_cast<double *>(a[0]));
 531                             break;
 532                         case QVariant::String:
 533                             needActivate = *reinterpret_cast<QString *>(a[0]) != data[id].asQString();
 534                             data[id].setValue(*reinterpret_cast<QString *>(a[0]));
 535                             break;
 536                         case QVariant::Url:
 537                             needActivate = *reinterpret_cast<QUrl *>(a[0]) != data[id].asQUrl();
 538                             data[id].setValue(*reinterpret_cast<QUrl *>(a[0]));
 539                             break;
 540                         case QVariant::Color:
 541                             needActivate = *reinterpret_cast<QColor *>(a[0]) != data[id].asQColor();
 542                             data[id].setValue(*reinterpret_cast<QColor *>(a[0]));
 543                             break;
 544                         case QVariant::Date:
 545                             needActivate = *reinterpret_cast<QDate *>(a[0]) != data[id].asQDate();
 546                             data[id].setValue(*reinterpret_cast<QDate *>(a[0]));
 547                             break;
 548                         case QVariant::DateTime:
 549                             needActivate = *reinterpret_cast<QDateTime *>(a[0]) != data[id].asQDateTime();
 550                             data[id].setValue(*reinterpret_cast<QDateTime *>(a[0]));
 551                             break;
 552                         case QMetaType::QObjectStar:
 553                             needActivate = *reinterpret_cast<QObject **>(a[0]) != data[id].asQObject();
 554                             data[id].setValue(*reinterpret_cast<QObject **>(a[0]));
 555                             break;
 556                         default:
 557                             break;
 558                         }
 559                     }
 560
 561                 }
 562
 563                 if (c == QMetaObject::WriteProperty && needActivate) {
 564                     activate(object, methodOffset + id, 0);
 565                 }
 566
 567                 return -1;
 568             }
 569
 570             id -= metaData->propertyCount;
 571
 572             if (id < metaData->aliasCount) {
 573
 574                 QDeclarativeVMEMetaData::AliasData *d = metaData->aliasData() + id;
 575
 576                 if (d->flags & QML_ALIAS_FLAG_PTR && c == QMetaObject::ReadProperty)
 577                         *reinterpret_cast<void **>(a[0]) = 0;
 578
 579                 if (!ctxt) return -1;
 580
 581                 QDeclarativeContext *context = ctxt->asQDeclarativeContext();
 582                 QDeclarativeContextPrivate *ctxtPriv = QDeclarativeContextPrivate::get(context);
 583
 584                 QObject *target = ctxtPriv->data->idValues[d->contextIdx].data();
 585                 if (!target)
 586                     return -1;
 587
 588                 connectAlias(id);
 589
 590                 if (d->isObjectAlias()) {
 591                     *reinterpret_cast<QObject **>(a[0]) = target;
 592                     return -1;
 593                 }
 594
 595                 // Remove binding (if any) on write
 596                 if(c == QMetaObject::WriteProperty) {
 597                     int flags = *reinterpret_cast<int*>(a[3]);
 598                     if (flags & QDeclarativePropertyPrivate::RemoveBindingOnAliasWrite) {
 599                         QDeclarativeData *targetData = QDeclarativeData::get(target);
 600                         if (targetData && targetData->hasBindingBit(d->propertyIndex())) {
 601                             QDeclarativeAbstractBinding *binding = QDeclarativePropertyPrivate::setBinding(target, d->propertyIndex(), d->isValueTypeAlias()?d->valueTypeIndex():-1, 0);
 602                             if (binding) binding->destroy();
 603                         }
 604                     }
 605                 }
 606
 607                 if (d->isValueTypeAlias()) {
 608                     // Value type property
 609                     QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(ctxt->engine);
 610
 611                     QDeclarativeValueType *valueType = ep->valueTypes[d->valueType()];
 612                     Q_ASSERT(valueType);
 613
 614                     valueType->read(target, d->propertyIndex());
 615                     int rv = QMetaObject::metacall(valueType, c, d->valueTypeIndex(), a);
 616
 617                     if (c == QMetaObject::WriteProperty)
 618                         valueType->write(target, d->propertyIndex(), 0x00);
 619
 620                     return rv;
 621
 622                 } else {
 623                     return QMetaObject::metacall(target, c, d->propertyIndex(), a);
 624                 }
 625
 626             }
 627             return -1;
 628
 629         }
 630
 631     } else if(c == QMetaObject::InvokeMetaMethod) {
 632
 633         if (id >= methodOffset) {
 634
 635             id -= methodOffset;
 636             int plainSignals = metaData->signalCount + metaData->propertyCount +
 637                                metaData->aliasCount;
 638             if (id < plainSignals) {
 639                 QMetaObject::activate(object, _id, a);
 640                 return -1;
 641             }
 642
 643             id -= plainSignals;
 644
 645             if (id < metaData->methodCount) {
 646                 if (!ctxt->engine)
 647                     return -1; // We can't run the method
 648
 649                 QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(ctxt->engine);
 650
 651                 QScriptValue function = method(id);
 652
 653                 QScriptValueList args;
 654                 QDeclarativeVMEMetaData::MethodData *data = metaData->methodData() + id;
 655                 if (data->parameterCount) {
 656                     for (int ii = 0; ii < data->parameterCount; ++ii) {
 657                         args << ep->scriptValueFromVariant(*(QVariant *)a[ii + 1]);
 658                     }
 659                 }
 660                 QScriptValue rv = function.call(ep->objectClass->newQObject(object), args);
 661
 662                 if (a[0]) *reinterpret_cast<QVariant *>(a[0]) = ep->scriptValueToVariant(rv);
 663
 664                 return -1;
 665             }
 666             return -1;
 667         }
 668     }
 669
 670     if (parent)
 671         return parent->metaCall(c, _id, a);
 672     else
 673         return object->qt_metacall(c, _id, a);
 674 }
 675
 676 QScriptValue QDeclarativeVMEMetaObject::method(int index)
 677 {
 678     if (!methods)
 679         methods = new QScriptValue[metaData->methodCount];
 680
 681     if (!methods[index].isValid()) {
 682         QDeclarativeVMEMetaData::MethodData *data = metaData->methodData() + index;
 683
 684         const QChar *body =
 685             (const QChar *)(((const char*)metaData) + data->bodyOffset);
 686
 687         QString code = QString::fromRawData(body, data->bodyLength);
 688
 689         // XXX Use QScriptProgram
 690         // XXX We should evaluate all methods in a single big script block to
 691         // improve the call time between dynamic methods defined on the same
 692         // object
 693         methods[index] = QDeclarativeExpressionPrivate::evalInObjectScope(ctxt, object, code, ctxt->url.toString(),
 694                                                                           data->lineNumber, 0);
 695     }
 696
 697     return methods[index];
 698 }
 699
 700 QScriptValue QDeclarativeVMEMetaObject::readVarProperty(int id)
 701 {
 702     if (data[id].dataType() == qMetaTypeId<QScriptValue>())
 703         return data[id].asQScriptValue();
 704     else if (data[id].dataType() == QMetaType::QObjectStar)
 705         return QDeclarativeEnginePrivate::get(ctxt->engine)->objectClass->newQObject(data[id].asQObject());
 706     else
 707         return QDeclarativeEnginePrivate::get(ctxt->engine)->scriptValueFromVariant(data[id].asQVariant());
 708 }
 709
 710 QVariant QDeclarativeVMEMetaObject::readVarPropertyAsVariant(int id)
 711 {
 712     if (data[id].dataType() == qMetaTypeId<QScriptValue>())
 713         return QDeclarativeEnginePrivate::get(ctxt->engine)->scriptValueToVariant(data[id].asQScriptValue());
 714     else if (data[id].dataType() == QMetaType::QObjectStar)
 715         return QVariant::fromValue(data[id].asQObject());
 716     else
 717         return data[id].asQVariant();
 718 }
 719
 720 void QDeclarativeVMEMetaObject::writeVarProperty(int id, const QScriptValue &value)
 721 {
 722     data[id].setValue(value);
 723     activate(object, methodOffset + id, 0);
 724 }
 725
 726 void QDeclarativeVMEMetaObject::writeVarProperty(int id, const QVariant &value)
 727 {
 728     bool needActivate = false;
 729     if (value.userType() == QMetaType::QObjectStar) {
 730         QObject *o = qvariant_cast<QObject *>(value);
 731         needActivate = (data[id].dataType() != QMetaType::QObjectStar || data[id].asQObject() != o);
 732         data[id].setValue(qvariant_cast<QObject *>(value));
 733     } else {
 734         needActivate = (data[id].dataType() != qMetaTypeId<QVariant>() ||
 735                         data[id].asQVariant().userType() != value.userType() ||
 736                         data[id].asQVariant() != value);
 737         data[id].setValue(value);
 738     }
 739     if (needActivate)
 740         activate(object, methodOffset + id, 0);
 741 }
 742
 743 void QDeclarativeVMEMetaObject::listChanged(int id)
 744 {
 745     activate(object, methodOffset + id, 0);
 746 }
 747
 748 void QDeclarativeVMEMetaObject::list_append(QDeclarativeListProperty<QObject> *prop, QObject *o)
 749 {
 750     List *list = static_cast<List *>(prop->data);
 751     list->append(o);
 752     QMetaObject::activate(prop->object, list->notifyIndex, 0);
 753 }
 754
 755 int QDeclarativeVMEMetaObject::list_count(QDeclarativeListProperty<QObject> *prop)
 756 {
 757     return static_cast<List *>(prop->data)->count();
 758 }
 759
 760 QObject *QDeclarativeVMEMetaObject::list_at(QDeclarativeListProperty<QObject> *prop, int index)
 761 {
 762     return static_cast<List *>(prop->data)->at(index);
 763 }
 764
 765 void QDeclarativeVMEMetaObject::list_clear(QDeclarativeListProperty<QObject> *prop)
 766 {
 767     List *list = static_cast<List *>(prop->data);
 768     list->clear();
 769     QMetaObject::activate(prop->object, list->notifyIndex, 0);
 770 }
 771
 772 void QDeclarativeVMEMetaObject::registerInterceptor(int index, int valueIndex, QDeclarativePropertyValueInterceptor *interceptor)
 773 {
 774     if (aInterceptors.isEmpty())
 775         aInterceptors.resize(propertyCount() + metaData->propertyCount);
 776     aInterceptors.setBit(index);
 777     interceptors.insert(index, qMakePair(valueIndex, interceptor));
 778 }
 779
 780 int QDeclarativeVMEMetaObject::vmeMethodLineNumber(int index)
 781 {
 782     if (index < methodOffset) {
 783         Q_ASSERT(parent);
 784         return static_cast<QDeclarativeVMEMetaObject *>(parent)->vmeMethodLineNumber(index);
 785     }
 786
 787     int plainSignals = metaData->signalCount + metaData->propertyCount + metaData->aliasCount;
 788     Q_ASSERT(index >= (methodOffset + plainSignals) && index < (methodOffset + plainSignals + metaData->methodCount));
 789
 790     int rawIndex = index - methodOffset - plainSignals;
 791
 792     QDeclarativeVMEMetaData::MethodData *data = metaData->methodData() + rawIndex;
 793     return data->lineNumber;
 794 }
 795
 796 QScriptValue QDeclarativeVMEMetaObject::vmeMethod(int index)
 797 {
 798     if (index < methodOffset) {
 799         Q_ASSERT(parent);
 800         return static_cast<QDeclarativeVMEMetaObject *>(parent)->vmeMethod(index);
 801     }
 802     int plainSignals = metaData->signalCount + metaData->propertyCount + metaData->aliasCount;
 803     Q_ASSERT(index >= (methodOffset + plainSignals) && index < (methodOffset + plainSignals + metaData->methodCount));
 804     return method(index - methodOffset - plainSignals);
 805 }
 806
 807 void QDeclarativeVMEMetaObject::setVmeMethod(int index, const QScriptValue &value)
 808 {
 809     if (index < methodOffset) {
 810         Q_ASSERT(parent);
 811         return static_cast<QDeclarativeVMEMetaObject *>(parent)->setVmeMethod(index, value);
 812     }
 813     int plainSignals = metaData->signalCount + metaData->propertyCount + metaData->aliasCount;
 814     Q_ASSERT(index >= (methodOffset + plainSignals) && index < (methodOffset + plainSignals + metaData->methodCount));
 815
 816     if (!methods)
 817         methods = new QScriptValue[metaData->methodCount];
 818     methods[index - methodOffset - plainSignals] = value;
 819 }
 820
 821 QScriptValue QDeclarativeVMEMetaObject::vmeProperty(int index)
 822 {
 823     if (index < propOffset) {
 824         Q_ASSERT(parent);
 825         return static_cast<QDeclarativeVMEMetaObject *>(parent)->vmeProperty(index);
 826     }
 827     return readVarProperty(index - propOffset);
 828 }
 829
 830 void QDeclarativeVMEMetaObject::setVMEProperty(int index, const QScriptValue &v)
 831 {
 832     if (index < propOffset) {
 833         Q_ASSERT(parent);
 834         static_cast<QDeclarativeVMEMetaObject *>(parent)->setVMEProperty(index, v);
 835     }
 836     return writeVarProperty(index - propOffset, v);
 837 }
 838
 839 bool QDeclarativeVMEMetaObject::aliasTarget(int index, QObject **target, int *coreIndex, int *valueTypeIndex) const
 840 {
 841     Q_ASSERT(index >= propOffset + metaData->propertyCount);
 842
 843     *target = 0;
 844     *coreIndex = -1;
 845     *valueTypeIndex = -1;
 846
 847     if (!ctxt)
 848         return false;
 849
 850     QDeclarativeVMEMetaData::AliasData *d = metaData->aliasData() + (index - propOffset - metaData->propertyCount);
 851     QDeclarativeContext *context = ctxt->asQDeclarativeContext();
 852     QDeclarativeContextPrivate *ctxtPriv = QDeclarativeContextPrivate::get(context);
 853
 854     *target = ctxtPriv->data->idValues[d->contextIdx].data();
 855     if (!*target)
 856         return false;
 857
 858     if (d->isObjectAlias()) {
 859     } else if (d->isValueTypeAlias()) {
 860         *coreIndex = d->propertyIndex();
 861         *valueTypeIndex = d->valueTypeIndex();
 862     } else {
 863         *coreIndex = d->propertyIndex();
 864     }
 865
 866     return true;
 867 }
 868
 869 void QDeclarativeVMEMetaObject::connectAlias(int aliasId)
 870 {
 871     if (!aConnected.testBit(aliasId)) {
 872         aConnected.setBit(aliasId);
 873
 874         QDeclarativeContext *context = ctxt->asQDeclarativeContext();
 875         QDeclarativeContextPrivate *ctxtPriv = QDeclarativeContextPrivate::get(context);
 876
 877         QDeclarativeVMEMetaData::AliasData *d = metaData->aliasData() + aliasId;
 878
 879         QObject *target = ctxtPriv->data->idValues[d->contextIdx].data();
 880         if (!target)
 881             return;
 882
 883         int sigIdx = methodOffset + aliasId + metaData->propertyCount;
 884         QMetaObject::connect(context, d->contextIdx + ctxtPriv->notifyIndex, object, sigIdx);
 885
 886         if (!d->isObjectAlias()) {
 887             QMetaProperty prop = target->metaObject()->property(d->propertyIndex());
 888             if (prop.hasNotifySignal())
 889                 QDeclarativePropertyPrivate::connect(target, prop.notifySignalIndex(), object, sigIdx);
 890         }
 891     }
 892 }
 893
 894 void QDeclarativeVMEMetaObject::connectAliasSignal(int index)
 895 {
 896     int aliasId = (index - methodOffset) - metaData->propertyCount;
 897     if (aliasId < 0 || aliasId >= metaData->aliasCount)
 898         return;
 899
 900     connectAlias(aliasId);
 901 }
 902
 903 QT_END_NAMESPACE