Don't restore stale navigation control when a dialog closes

[kryksyh]

Resolves: audacity/audacity#11659

ProgressBar saves the active navigation control on open and re-activates it on close. If focus in the parent window changed while the dialog is opened (eg a track created), the close restores the incorrect control.

We need to update which control should be activated on close.

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Build configuration

audacity: audacity/audacity/master
audacity platforms: linux_x64
musescore: musescore/MuseScore/main
musescore platforms: linux_x64

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Reviewing files that changed from the base of the PR and between 697a594 and e16985b.

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• framework/uicomponents/qml/Muse/UiComponents/windowview.cpp

📝 Walkthrough

Walkthrough

WindowView now updates its navigation parent control when navigation changes. Control ownership is centralized in setNavigationParentControl, which disconnects the previous destruction callback and clears the property when the new QML control is destroyed. Resolution uses the active control through this setter. Updates apply only to opened windows whose parent window matches the active control’s window.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the primary change: preventing restoration of a stale navigation control when a dialog closes.
Description check	✅ Passed	The description identifies the linked issue, explains the stale-control problem, summarizes the intended fix, and completes the required checklist except for the optional test item and the placeholder…
Linked Issues check	✅ Passed	The changes update the active navigation control when navigation changes and before dialog closure, which directly addresses the stale-control behavior reported in issue #11659 [#11659].
Out of Scope Changes check	✅ Passed	The changes are limited to WindowView navigation-control ownership, resolution, and update behavior. They align with the stated issue and do not introduce unrelated code changes.

Full details: Description check

Explanation

The description identifies the linked issue, explains the stale-control problem, summarizes the intended fix, and completes the required checklist except for the optional test item and the placeholder username.

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Actionable comments posted: 1

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Inline comments:
In `@framework/uicomponents/qml/Muse/UiComponents/windowview.cpp`:
- Around line 545-547: Update the QObject::destroyed callback in WindowView to
clear m_navigationParentControl directly without calling
setNavigationParentControl or casting the expired interface pointer, then emit
navigationParentControlChanged(nullptr) explicitly.

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📒 Files selected for processing (2)

• framework/uicomponents/qml/Muse/UiComponents/windowview.cpp
• framework/uicomponents/qml/Muse/UiComponents/windowview.h

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