StackView: add removed() attached signal

This provides an opportunity for users to destroy items that StackView
doesn't, like objects that are pushed as Items.

[ChangeLog][Controls][StackView] Added StackView.removed() attached
signal to provide a way to delete items that StackView won't.

Task-number: QTBUG-55405
Change-Id: I59096efaf1a95d36451fbf1f46b8f68ee96c20de
Reviewed-by: J-P Nurmi <jpnurmi@qt.io>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/quicktemplates2/qquickstackview_p.cpp b/src/quicktemplates2/qquickstackview_p.cpp
index 0f5674c2..438b4269 100644
--- a/src/quicktemplates2/qquickstackview_p.cpp
+++ b/src/quicktemplates2/qquickstackview_p.cpp
@@ -85,6 +85,7 @@ QQuickStackElement::~QQuickStackElement()
     if (ownComponent)
         delete component;
 
+    QQuickStackAttached *attached = attachedStackObject(this);
     if (item) {
         if (ownItem) {
             item->setParentItem(nullptr);
@@ -99,13 +100,15 @@ QQuickStackElement::~QQuickStackElement()
             if (item->parentItem() != originalParent) {
                 item->setParentItem(originalParent);
             } else {
-                QQuickStackAttached *attached = attachedStackObject(this);
                 if (attached)
                     QQuickStackAttachedPrivate::get(attached)->itemParentChanged(item, nullptr);
             }
         }
     }
 
+    if (attached)
+        emit attached->removed();
+
     delete context;
 }