Utils: Allow a BoolAspect to adopt an external button

This will be used by the apply machinery and allows more
complex setups than the automatically generated internal
CheckBox button.

Change-Id: I237a9283253f11bcb76e0366a0b6c5a0346fdfd8
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/libs/utils/aspects.cpp

@@ -587,6 +587,7 @@ public:
     BoolAspect::LabelPlacement m_labelPlacement = BoolAspect::LabelPlacement::AtCheckBox;
     QPointer<QAbstractButton> m_button; // Owned by configuration widget
     QPointer<QGroupBox> m_groupBox; // For BoolAspects handling GroupBox check boxes
+    bool m_buttonIsAdopted = false;
 };
 
 class ColorAspectPrivate
@@ -1446,8 +1447,10 @@ BoolAspect::~BoolAspect() = default;
 */
 void BoolAspect::addToLayout(Layouting::LayoutItem &parent)
 {
+    if (!d->m_buttonIsAdopted) {
         QTC_CHECK(!d->m_button);
         d->m_button = createSubWidget<QCheckBox>();
+    }
     switch (d->m_labelPlacement) {
     case LabelPlacement::AtCheckBoxWithoutDummyLabel:
         d->m_button->setText(labelText());
@@ -1474,6 +1477,15 @@ void BoolAspect::addToLayout(Layouting::LayoutItem &parent)
             this, &BoolAspect::volatileValueChanged);
 }
 
+void BoolAspect::adoptButton(QAbstractButton *button)
+{
+    QTC_ASSERT(button, return);
+    QTC_CHECK(!d->m_button);
+    d->m_button = button;
+    d->m_buttonIsAdopted = true;
+    registerSubWidget(button);
+}
+
 std::function<void (QObject *)> BoolAspect::groupChecker()
 {
     return [this](QObject *target) {

src/libs/utils/aspects.h

@@ -240,6 +240,8 @@ public:
                   LabelPlacement labelPlacement = LabelPlacement::InExtraLabel);
     void setLabelPlacement(LabelPlacement labelPlacement);
 
+    void adoptButton(QAbstractButton *button);
+
 signals:
     void valueChanged(bool newValue);
     void volatileValueChanged(bool newValue);