diff options
author | Simon Hausmann <simon.hausmann@theqtcompany.com> | 2015-08-15 01:31:13 +0200 |
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committer | Simon Hausmann <simon.hausmann@theqtcompany.com> | 2015-08-19 05:03:50 +0000 |
commit | 4876ea6a18ccdfd72014582aa5d50ab9f6b6ec9e (patch) | |
tree | 73e9a9ce3ed28b817c77d3d48475c76a7d54c9cf /src/qml/qml/qqmlopenmetaobject_p.h | |
parent | 7fccfc4663c362d717383493732849237562f0c7 (diff) |
Fix performance of ListModel::get()
When called, the function would return a full-fledged QObject that maps the
list element addressed. It would contain a _copy_ of all values in the list
item and it would create a new meta-object for each list element.
This function exists for the JavaScript API, and therefore we now return a much
more lightweight object. For compatbility reasons it still has to be a QObject,
but the meta-object of it is created on-demand, i.e. only when accessing
properties from the C++ side or when connecting to the changed signal of a
property. Otherwise the JavaScript wrapper will return the live values from the
model without copying them.
Change-Id: Iabf3ca22192d2aee06ae9d4b4cfb2fcde2a021b1
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Reviewed-by: Michael Brasser <michael.brasser@live.com>
Reviewed-by: Spencer Schumann <spencer.schumann@echostar.com>
Diffstat (limited to 'src/qml/qml/qqmlopenmetaobject_p.h')
-rw-r--r-- | src/qml/qml/qqmlopenmetaobject_p.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/qml/qml/qqmlopenmetaobject_p.h b/src/qml/qml/qqmlopenmetaobject_p.h index 6a29d08d4e..75ce9addd6 100644 --- a/src/qml/qml/qqmlopenmetaobject_p.h +++ b/src/qml/qml/qqmlopenmetaobject_p.h @@ -54,6 +54,7 @@ public: QQmlOpenMetaObjectType(const QMetaObject *base, QQmlEngine *engine); ~QQmlOpenMetaObjectType(); + void createProperties(const QVector<QByteArray> &names); int createProperty(const QByteArray &name); int propertyOffset() const; @@ -101,6 +102,8 @@ public: QQmlOpenMetaObjectType *type() const; + void emitPropertyNotification(const QByteArray &propertyName); + protected: virtual int metaCall(QMetaObject::Call _c, int _id, void **_a); virtual int createProperty(const char *, const char *); |