Showing the changes to libraries/script-engine/src/DataViewClass.cpp (1 of 4 files). Show all
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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 | +} | |