1 | // Copyright (C) 2016 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #include "qqmlproxymetaobject_p.h" |
5 | #include "qqmlproperty_p.h" |
6 | |
7 | QT_BEGIN_NAMESPACE |
8 | |
9 | QQmlProxyMetaObject::QQmlProxyMetaObject(QObject *obj, QList<ProxyData> *mList) |
10 | : metaObjects(mList), proxies(nullptr), parent(nullptr), object(obj) |
11 | { |
12 | metaObject = metaObjects->constFirst().metaObject; |
13 | |
14 | QObjectPrivate *op = QObjectPrivate::get(o: obj); |
15 | if (op->metaObject) |
16 | parent = op->metaObject; |
17 | |
18 | op->metaObject = this; |
19 | } |
20 | |
21 | QQmlProxyMetaObject::~QQmlProxyMetaObject() |
22 | { |
23 | if (parent) |
24 | delete parent; |
25 | parent = nullptr; |
26 | |
27 | if (proxies) |
28 | delete [] proxies; |
29 | proxies = nullptr; |
30 | } |
31 | |
32 | QObject *QQmlProxyMetaObject::getProxy(int index) |
33 | { |
34 | if (!proxies) { |
35 | proxies = new QObject *[metaObjects->size()]; |
36 | ::memset(s: proxies, c: 0, n: sizeof(QObject *) * metaObjects->size()); |
37 | } |
38 | |
39 | if (!proxies[index]) { |
40 | const ProxyData &data = metaObjects->at(i: index); |
41 | if (!data.createFunc) |
42 | return nullptr; |
43 | |
44 | QObject *proxy = data.createFunc(object); |
45 | const QMetaObject *metaObject = proxy->metaObject(); |
46 | proxies[index] = proxy; |
47 | |
48 | int localOffset = data.metaObject->methodOffset(); |
49 | int methodOffset = metaObject->methodOffset(); |
50 | int methods = metaObject->methodCount() - methodOffset; |
51 | |
52 | // ### - Can this be done more optimally? |
53 | for (int jj = 0; jj < methods; ++jj) { |
54 | QMetaMethod method = |
55 | metaObject->method(index: jj + methodOffset); |
56 | if (method.methodType() == QMetaMethod::Signal) |
57 | QQmlPropertyPrivate::connect(sender: proxy, signal_index: methodOffset + jj, receiver: object, method_index: localOffset + jj); |
58 | } |
59 | } |
60 | |
61 | return proxies[index]; |
62 | } |
63 | |
64 | int QQmlProxyMetaObject::metaCall(QObject *o, QMetaObject::Call c, int id, void **a) |
65 | { |
66 | Q_ASSERT(object == o); |
67 | |
68 | switch (c) { |
69 | case QMetaObject::ReadProperty: |
70 | case QMetaObject::WriteProperty: { |
71 | if (id < metaObjects->constLast().propertyOffset) |
72 | break; |
73 | |
74 | for (int ii = 0; ii < metaObjects->size(); ++ii) { |
75 | const int globalPropertyOffset = metaObjects->at(i: ii).propertyOffset; |
76 | if (id < globalPropertyOffset) |
77 | continue; |
78 | |
79 | QObject *proxy = getProxy(index: ii); |
80 | Q_ASSERT(proxy); |
81 | const int localProxyOffset = proxy->metaObject()->propertyOffset(); |
82 | const int localProxyId = id - globalPropertyOffset + localProxyOffset; |
83 | return proxy->qt_metacall(c, localProxyId, a); |
84 | } |
85 | break; |
86 | } |
87 | case QMetaObject::InvokeMetaMethod: { |
88 | if (id < metaObjects->constLast().methodOffset) |
89 | break; |
90 | |
91 | QMetaMethod m = object->metaObject()->method(index: id); |
92 | if (m.methodType() == QMetaMethod::Signal) { |
93 | QMetaObject::activate(sender: object, signal_index: id, argv: a); |
94 | return -1; |
95 | } |
96 | |
97 | for (int ii = 0; ii < metaObjects->size(); ++ii) { |
98 | const int globalMethodOffset = metaObjects->at(i: ii).methodOffset; |
99 | if (id < globalMethodOffset) |
100 | continue; |
101 | |
102 | QObject *proxy = getProxy(index: ii); |
103 | Q_ASSERT(proxy); |
104 | const int localMethodOffset = proxy->metaObject()->methodOffset(); |
105 | const int localMethodId = id - globalMethodOffset + localMethodOffset; |
106 | return proxy->qt_metacall(c, localMethodId, a); |
107 | } |
108 | |
109 | break; |
110 | } |
111 | case QMetaObject::CustomCall: { |
112 | if ((id & ~MaxExtensionCount) != ExtensionObjectId) |
113 | break; |
114 | int index = id & MaxExtensionCount; |
115 | if (qsizetype(index) >= metaObjects->size()) |
116 | break; |
117 | a[0] = getProxy(index); |
118 | return id; |
119 | } |
120 | default: |
121 | break; |
122 | } |
123 | |
124 | if (parent) |
125 | return parent->metaCall(o, c, id: id, a); |
126 | else |
127 | return object->qt_metacall(c, id, a); |
128 | } |
129 | |
130 | QMetaObject *QQmlProxyMetaObject::toDynamicMetaObject(QObject *) |
131 | { |
132 | return metaObject; |
133 | } |
134 | |
135 | QT_END_NAMESPACE |
136 | |