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Details

Type: User Story
Resolution: Unresolved
Priority: P1: Critical
Fix Version/s: 6.x
Affects Version/s: None
Component/s: QML: Declarative and Javascript Engine, Quick: Core Declarative QML
Labels:
- qmlnext

Epic Link:
Adopting bindable QProperty throughout Qt

Description

We have QProperty in in qtbase, and the QML engine already has support for it. However, all the classes that we currently expose still use the old property implementation. For Qt 6, we want to introduce QProperty at least in some places:

to validate the design and test the implementation of QProperty and
to improve the performance of QML

Attachments

Issue Links

depends on

QTBUG-90493 Investigate interaction of Qml Binding element and QProperty backed bindings

Closed

mentioned in: Page Loading...

Sub-Tasks

1.	Port QQuickItem's x and y property to QProperty	Closed	Fabian Kosmale
2.	QNotifiedProperty: Allow callback to obtain old value	Closed	Fabian Kosmale
3.	Investigate adding a guard callback to QNotifiedProperty	Closed	Fabian Kosmale
4.	Q(Notified)Property: Consider supporting comparison policies	Closed	Fabian Kosmale
5.	Investigate QQuickItem::setParentItem <-> focus relationship	Reported	Fabian Kosmale
6.	Investigate why BINDABLE + MEMBER properties are readonly	Reported	Lars Knoll
7.	Revisit tst_qqmlecmascript::bindingOnQPropertyContextProperty	In Progress	Lars Knoll
8.	Ensure that QProperty is bugfree	Closed	Fabian Kosmale

Gerrit Reviews

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For Gerrit Dashboard: QTBUG-84909
#	Subject	Branch	Project	Status	CR	V
305075,12	QNotifiedProperty: Add guard callback	dev	qt/qtbase	Status: MERGED	+2	0
307482,2	Convert QQmlComponent to new properties	dev	qt/qtdeclarative	Status: ABANDONED	0	0
312570,7	Adjust to qtbase changes	dev	qt/qtdeclarative	Status: MERGED	+2	0
312570,7	Adjust to qtbase changes	dev	qt/qtdeclarative	Status: MERGED	+2	0
316302,14	Handle notifier list modification during iteration	dev	qt/qtbase	Status: MERGED	+2	0
317778,1	Remove disabled test case	dev	qt/qtdeclarative	Status: ABANDONED	-1	0
325247,3	QML engine: Fix binding setup	dev	qt/qtdeclarative	Status: MERGED	+2	0
325296,2	QML engine: Fix binding setup	6.0	qt/qtdeclarative	Status: MERGED	+2	0
325412,2	QBindable: Disallow mutation if read-only	dev	qt/qtbase	Status: MERGED	+2	0
325457,2	QBindable: Disallow mutation if read-only	6.0	qt/qtbase	Status: MERGED	+2	0
326069,4	QProperty: Handle eager binding calling setBinding	dev	qt/qtbase	Status: MERGED	+2	0
326175,2	QProperty: Handle eager binding calling setBinding	6.0	qt/qtbase	Status: MERGED	+2	0
344571,3	tst_qquickstates: Prepare test for properties becoming bindable	dev	qt/qtdeclarative	Status: MERGED	+2	0