** Branch linked: lp:~tpeeters/ubuntu-ui-toolkit/qt56fixes2sections
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https://bugs.launchpad.net/bugs/1621509
Title:
'window' contextProperty is registered after components are completed
Status in ubuntu-ui-toolkit package in Ubuntu:
In Progress
Bug description:
This is the cause for the Sections index resetting after
initialization, see bug 1610231.
Use this code:
------ ModelFromList13.qml ------
import QtQuick 2.4
// This component is used in tst_listview_bug1621509.13.qml
Item {
id: root
property var myObject
property int count: 0 // will hold the number of changes to myObject
after Component.completed.
onMyObjectChanged: {
print("myObject changed to "+myObject)
count++;
}
Component.onCompleted: {
count = 0;
}
}
------ tst_list_model_from_list_bug1621509.13.qml ------
import QtQuick 2.4
import QtTest 1.0
// Ubuntu.Components is not explicitly used below, but its import causes bug
#1621509.
import Ubuntu.Components 1.3
TestCase {
id: testCase
name: "EmbeddedListView"
width: 100
height: 100
// Bug #1621509 only occurs when we wait for the window to be visible.
// Forces the components to be completed before the test functions are
executed.
when: windowShown
ModelFromList13 {
id: embeddedListView
QtObject {
objectName: "one"
id: objectOne
}
myObject: objectOne
}
Component.onCompleted: {
print("Component completed."); // must print something to reproduce
the bug.
}
function test_no_model_change_after_completed_bug1621509_bug1610231() {
compare(embeddedListView.count, 0,
"The model was changed after the component was completed.");
}
}
----------
the test will fail. Also, one can replace the TestCase by Item (and
remove when: windowShown) and simply use qmlscene to start the app. It
will show that myObject is set twice: before the component completed,
and then again afterwards. I suspect the reason for this is the change
of the 'window' context property which causes everything in the
context (objectOne) and properties that depend on that to be re-
evaluated.
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