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| 1 | // | ||
| 2 | // DataViewClass.cpp | ||
| 3 | // | ||
| 4 | // | ||
| 5 | // Created by Clement on 7/8/14. | ||
| 6 | // Copyright 2014 High Fidelity, Inc. | ||
| 7 | // | ||
| 8 | // Distributed under the Apache License, Version 2.0. | ||
| 9 | // See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html | ||
| 10 | // | ||
| 11 | |||
| 12 | #include "DataViewPrototype.h" | ||
| 13 | |||
| 14 | #include "DataViewClass.h" | ||
| 15 | |||
| 16 | Q_DECLARE_METATYPE(QByteArray*) | ||
| 17 | |||
| 18 | static const QString DATA_VIEW_NAME = "DataView"; | ||
| 19 | |||
| 20 | DataViewClass::DataViewClass(QScriptEngine* engine) : ArrayBufferViewClass(engine) { | ||
| 21 | QScriptValue global = engine->globalObject(); | ||
| 22 | |||
| 23 | // Save string handles for quick lookup | ||
| 24 | _name = engine->toStringHandle(DATA_VIEW_NAME.toLatin1()); | ||
| 25 | |||
| 26 | // build prototype | ||
| 27 | _proto = engine->newQObject(new DataViewPrototype(this), | ||
| 28 | QScriptEngine::QtOwnership, | ||
| 29 | QScriptEngine::SkipMethodsInEnumeration | | ||
| 30 | QScriptEngine::ExcludeSuperClassMethods | | ||
| 31 | QScriptEngine::ExcludeSuperClassProperties); | ||
| 32 | |||
| 33 | _proto.setPrototype(global.property("Object").property("prototype")); | ||
| 34 | |||
| 35 | _ctor = engine->newFunction(construct, _proto); | ||
| 36 | _ctor.setData(engine->toScriptValue(this)); | ||
| 37 | |||
| 38 | engine->globalObject().setProperty(name(), _ctor); | ||
| 39 | } | ||
| 40 | |||
| 41 | QScriptValue DataViewClass::newInstance(QScriptValue buffer, quint32 byteOffset, quint32 byteLentgh) { | ||
| 42 | QScriptValue data = engine()->newObject(); | ||
| 43 | data.setProperty(_bufferName, buffer); | ||
| 44 | data.setProperty(_byteOffsetName, byteOffset); | ||
| 45 | data.setProperty(_byteLengthName, byteLentgh); | ||
| 46 | |||
| 47 | return engine()->newObject(this, data); | ||
| 48 | } | ||
| 49 | |||
| 50 | QScriptValue DataViewClass::construct(QScriptContext *context, QScriptEngine *engine) { | ||
| 51 | DataViewClass* cls = qscriptvalue_cast<DataViewClass*>(context->callee().data()); | ||
| 52 | if (!cls || context->argumentCount() < 1) { | ||
| 53 | return QScriptValue(); | ||
| 54 | } | ||
| 55 | |||
| 56 | QScriptValue bufferArg = context->argument(0); | ||
| 57 | QScriptValue byteOffsetArg = (context->argumentCount() >= 2) ? context->argument(1) : QScriptValue(-1); | ||
| 58 | QScriptValue byteLengthArg = (context->argumentCount() >= 3) ? context->argument(2) : QScriptValue(-1); | ||
| 59 | |||
| 60 | QByteArray* arrayBuffer = (bufferArg.isValid()) ? qscriptvalue_cast<QByteArray*>(bufferArg.data()) :NULL; | ||
| 61 | if (!arrayBuffer) { | ||
| 62 | return QScriptValue(); | ||
| 63 | } | ||
| 64 | |||
| 65 | QScriptValue newObject = cls->newInstance(bufferArg, byteOffsetArg.toInt32(), byteLengthArg.toInt32()); | ||
| 66 | |||
| 67 | if (context->isCalledAsConstructor()) { | ||
| 68 | context->setThisObject(newObject); | ||
| 69 | return engine->undefinedValue(); | ||
| 70 | } | ||
| 71 | |||
| 72 | return newObject; | ||
| 73 | } | ||
| 74 | |||
| 75 | QString DataViewClass::name() const { | ||
| 76 | return _name.toString(); | ||
| 77 | } | ||
| 78 | |||
| 79 | QScriptValue DataViewClass::prototype() const { | ||
| 80 | return _proto; | ||
| 81 | } | ||