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3 | ** Copyright (C) 2016 The Qt Company Ltd. |
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6 | ** This file is part of the QtQml module of the Qt Toolkit. |
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27 | ** General Public License version 2.0 or (at your option) the GNU General |
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38 | ****************************************************************************/ |
39 | |
40 | #include "qqmllistwrapper_p.h" |
41 | #include <private/qqmllist_p.h> |
42 | #include <private/qv4objectproto_p.h> |
43 | #include <qv4objectiterator_p.h> |
44 | |
45 | #include <private/qv4functionobject_p.h> |
46 | #include <private/qv4qobjectwrapper_p.h> |
47 | |
48 | QT_BEGIN_NAMESPACE |
49 | |
50 | using namespace QV4; |
51 | |
52 | DEFINE_OBJECT_VTABLE(QmlListWrapper); |
53 | |
54 | void Heap::QmlListWrapper::init() |
55 | { |
56 | Object::init(); |
57 | object.init(); |
58 | QV4::Scope scope(internalClass->engine); |
59 | QV4::ScopedObject o(scope, this); |
60 | o->setArrayType(Heap::ArrayData::Custom); |
61 | } |
62 | |
63 | void Heap::QmlListWrapper::destroy() |
64 | { |
65 | object.destroy(); |
66 | Object::destroy(); |
67 | } |
68 | |
69 | ReturnedValue QmlListWrapper::create(ExecutionEngine *engine, QObject *object, int propId, int propType) |
70 | { |
71 | if (!object || propId == -1) |
72 | return Encode::null(); |
73 | |
74 | Scope scope(engine); |
75 | |
76 | Scoped<QmlListWrapper> r(scope, engine->memoryManager->allocate<QmlListWrapper>()); |
77 | r->d()->object = object; |
78 | r->d()->propertyType = propType; |
79 | void *args[] = { &r->d()->property(), nullptr }; |
80 | QMetaObject::metacall(object, QMetaObject::ReadProperty, propId, args); |
81 | return r.asReturnedValue(); |
82 | } |
83 | |
84 | ReturnedValue QmlListWrapper::create(ExecutionEngine *engine, const QQmlListProperty<QObject> &prop, int propType) |
85 | { |
86 | Scope scope(engine); |
87 | |
88 | Scoped<QmlListWrapper> r(scope, engine->memoryManager->allocate<QmlListWrapper>()); |
89 | r->d()->object = prop.object; |
90 | r->d()->property() = prop; |
91 | r->d()->propertyType = propType; |
92 | return r.asReturnedValue(); |
93 | } |
94 | |
95 | QVariant QmlListWrapper::toVariant() const |
96 | { |
97 | if (!d()->object) |
98 | return QVariant(); |
99 | |
100 | return QVariant::fromValue(value: QQmlListReferencePrivate::init(d()->property(), d()->propertyType, engine()->qmlEngine())); |
101 | } |
102 | |
103 | |
104 | ReturnedValue QmlListWrapper::virtualGet(const Managed *m, PropertyKey id, const Value *receiver, bool *hasProperty) |
105 | { |
106 | Q_ASSERT(m->as<QmlListWrapper>()); |
107 | const QmlListWrapper *w = static_cast<const QmlListWrapper *>(m); |
108 | QV4::ExecutionEngine *v4 = w->engine(); |
109 | |
110 | if (id.isArrayIndex()) { |
111 | uint index = id.asArrayIndex(); |
112 | quint32 count = w->d()->property().count ? w->d()->property().count(&w->d()->property()) : 0; |
113 | if (index < count && w->d()->property().at) { |
114 | if (hasProperty) |
115 | *hasProperty = true; |
116 | return QV4::QObjectWrapper::wrap(engine: v4, object: w->d()->property().at(&w->d()->property(), index)); |
117 | } |
118 | |
119 | if (hasProperty) |
120 | *hasProperty = false; |
121 | return Value::undefinedValue().asReturnedValue(); |
122 | } |
123 | |
124 | if (id.isString() && id == v4->id_length()->propertyKey()) { |
125 | if (hasProperty) |
126 | *hasProperty = true; |
127 | quint32 count = w->d()->property().count ? w->d()->property().count(&w->d()->property()) : 0; |
128 | return Value::fromUInt32(i: count).asReturnedValue(); |
129 | } |
130 | |
131 | return Object::virtualGet(m, id, receiver, hasProperty); |
132 | } |
133 | |
134 | bool QmlListWrapper::virtualPut(Managed *m, PropertyKey id, const Value &value, Value *receiver) |
135 | { |
136 | Q_ASSERT(m->as<QmlListWrapper>()); |
137 | |
138 | const auto *w = static_cast<const QmlListWrapper *>(m); |
139 | QV4::ExecutionEngine *v4 = w->engine(); |
140 | |
141 | QQmlListProperty<QObject> *prop = &(w->d()->property()); |
142 | |
143 | if (id.isArrayIndex()) { |
144 | if (!prop->count || !prop->replace) |
145 | return false; |
146 | |
147 | const uint index = id.asArrayIndex(); |
148 | const int count = prop->count(prop); |
149 | if (count < 0 || index >= uint(count)) |
150 | return false; |
151 | |
152 | QV4::Scope scope(v4); |
153 | QV4::ScopedObject so(scope, value.toObject(e: scope.engine)); |
154 | if (auto *wrapper = so->as<QV4::QObjectWrapper>()) { |
155 | prop->replace(prop, index, wrapper->object()); |
156 | return true; |
157 | } |
158 | |
159 | return false; |
160 | } |
161 | |
162 | if (id.isString() && id == v4->id_length()->propertyKey()) { |
163 | if (!prop->count) |
164 | return false; |
165 | |
166 | const quint32 count = prop->count(prop); |
167 | |
168 | bool ok = false; |
169 | const uint newLength = value.asArrayLength(ok: &ok); |
170 | if (!ok) |
171 | return false; |
172 | |
173 | if (newLength == 0) { |
174 | if (!prop->clear) |
175 | return false; |
176 | prop->clear(prop); |
177 | return true; |
178 | } |
179 | |
180 | if (newLength < count) { |
181 | if (!prop->removeLast) |
182 | return false; |
183 | |
184 | for (uint i = newLength; i < count; ++i) |
185 | prop->removeLast(prop); |
186 | |
187 | return true; |
188 | } |
189 | |
190 | if (!prop->append) |
191 | return false; |
192 | |
193 | for (uint i = count; i < newLength; ++i) |
194 | prop->append(prop, nullptr); |
195 | |
196 | return true; |
197 | } |
198 | |
199 | return Object::virtualPut(m, id, value, receiver); |
200 | } |
201 | |
202 | struct QmlListWrapperOwnPropertyKeyIterator : ObjectOwnPropertyKeyIterator |
203 | { |
204 | ~QmlListWrapperOwnPropertyKeyIterator() override = default; |
205 | PropertyKey next(const Object *o, Property *pd = nullptr, PropertyAttributes *attrs = nullptr) override; |
206 | |
207 | }; |
208 | |
209 | PropertyKey QmlListWrapperOwnPropertyKeyIterator::next(const Object *o, Property *pd, PropertyAttributes *attrs) |
210 | { |
211 | const QmlListWrapper *w = static_cast<const QmlListWrapper *>(o); |
212 | |
213 | quint32 count = w->d()->property().count ? w->d()->property().count(&w->d()->property()) : 0; |
214 | if (arrayIndex < count) { |
215 | uint index = arrayIndex; |
216 | ++arrayIndex; |
217 | if (attrs) |
218 | *attrs = QV4::Attr_Data; |
219 | if (pd) |
220 | pd->value = QV4::QObjectWrapper::wrap(engine: w->engine(), object: w->d()->property().at(&w->d()->property(), index)); |
221 | return PropertyKey::fromArrayIndex(idx: index); |
222 | } |
223 | |
224 | return ObjectOwnPropertyKeyIterator::next(o, pd, attrs); |
225 | } |
226 | |
227 | OwnPropertyKeyIterator *QmlListWrapper::virtualOwnPropertyKeys(const Object *m, Value *target) |
228 | { |
229 | *target = *m; |
230 | return new QmlListWrapperOwnPropertyKeyIterator; |
231 | } |
232 | |
233 | void PropertyListPrototype::init(ExecutionEngine *) |
234 | { |
235 | defineDefaultProperty(QStringLiteral("push" ), code: method_push, argumentCount: 1); |
236 | } |
237 | |
238 | ReturnedValue PropertyListPrototype::method_push(const FunctionObject *b, const Value *thisObject, const Value *argv, int argc) |
239 | { |
240 | Scope scope(b); |
241 | ScopedObject instance(scope, thisObject->toObject(e: scope.engine)); |
242 | if (!instance) |
243 | RETURN_UNDEFINED(); |
244 | QmlListWrapper *w = instance->as<QmlListWrapper>(); |
245 | if (!w) |
246 | RETURN_UNDEFINED(); |
247 | if (!w->d()->property().append) |
248 | THROW_GENERIC_ERROR("List doesn't define an Append function" ); |
249 | |
250 | QV4::ScopedObject so(scope); |
251 | for (int i = 0, ei = argc; i < ei; ++i) |
252 | { |
253 | so = argv[i].toObject(e: scope.engine); |
254 | if (QV4::QObjectWrapper *wrapper = so->as<QV4::QObjectWrapper>()) |
255 | w->d()->property().append(&w->d()->property(), wrapper->object() ); |
256 | } |
257 | return Encode::undefined(); |
258 | } |
259 | |
260 | QT_END_NAMESPACE |
261 | |