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During the registerTypes() callback in a QML module plugin we only allow
types to be registered that match the module URI specified in the
qmldir.
We can observe in QtQuickControls 2 that sometimes we need to register
types outside of the namespace of the module itself. QQC2 is in
QtQuick.Controls but the module has internal types that are in
QtQuick.Controls.impl.
Types are intended to be registered once in the virtual registerTypes()
function. However as we don't allow for the registration of .impl to
happen in registerTypes(), QQC2 works around this by registering the
types in initializeEngine(), during which the namespace restriction is
not in place.
This workaround means that every time an application creates a
QQuickView (and thus new QML engine) and loads a QML file that imports
QQC2, we end up calling initializeEngine(), as opposed to
registerTypes() that is called only one single time in the application
process. As a consequence each time this happens we and up calling
qmlRegisterTypes() with the same times and leak memory this way, as
qmlRegisterType*() is supposed to register a new type and return a new
type id that can be passed to qmlUnregisterType.
To solve this this patch lifts the restriction on namespaces for
registered types during registerTypes(). The real world case of QQC2
shows that the restriction is limiting and also easy to work around.
With the restriction lifted QQC2 can now register all types once in
registerTypes() instead.
[ChangeLog][QtQml][Important Behavior Changes] QML module plugins used
to be limited to type registrations in the primary module namespace in
the virtual registerTypes() function. Module authors worked around this
limitation by placing necessary internal type registrations into
initializeEngine() that may cause memory leaks. Therefore this
restriction has been moved and types in any (non-protected) namespaces
can be registered in the registerTypes() function.
Change-Id: I5baf9718a0b0a591f6eb6d7e2dc83e13b204800d
Reviewed-by: J-P Nurmi <jpnurmi@qt.io>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
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Conflicts:
src/quick/items/qquickimagebase.cpp
src/imports/layouts/plugin.cpp
Change-Id: I5f48474df4034a1347ec74795c85d369a55b6b21
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When instantiating static plugins no check is done whether the
QQmlExtensionInterface is declared. Therefore all user plugins are
instantiated in the Qml thread, which may cause problems.
Task-number: QTBUG-52012
Change-Id: Ia91ec5ec7b2a9721bd11e3648cdc161855b4454e
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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From Qt 5.7 -> tools & applications are lisenced under GPL v3 with some
exceptions, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new GPL-EXCEPT header instead of LGPL21 one
(in those files which will be under GPL 3 with exceptions)
Change-Id: I04760a0801837cfc516d1c7c02d4f503f6bb70b6
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Change-Id: I61120571787870c0ed17066afb31779b1e6e30e9
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>
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- Renamed LICENSE.LGPL to LICENSE.LGPLv21
- Added LICENSE.LGPLv3 & LICENSE.GPLv2
- Removed LICENSE.GPL
Change-Id: I84a565e2e0caa3b76bf291a7d188a57a4b00e1b0
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
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Change-Id: I674da7f77dde380fb0772d5077da84de875b6ce8
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
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Change-Id: I6c3bd7bebe3d62d1cfd0fa6334544c9db8398c76
Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
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Change copyrights and license headers from Nokia to Digia
Change-Id: Ie7f5d49ed8235d7a7845ab68f99ad1c220e64d5c
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Allow a module's qmldir to contain a module directive, which when
present specifies 'strict mode' import processing. In strict mode,
type registrations are only permitted into the namespace identified
in the qmldir file's module directive. In addition, any type
registrations to that namespace originating from other modules are
treated as error conditions.
Task-number: QTBUG-26551
Change-Id: I081bde2d3b83d3f28524440177fb2cd1ccee34ad
Reviewed-by: Chris Adams <christopher.adams@nokia.com>
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>
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