StackView: add attached activated() etc. signals

For initializing and cleaning up item-specific resources, these are
much more convenient than a StackView.onStatusChanged handler.

[ChangeLog][StackView] Added attached activated(), deactivated(),
activating(), and deactivating() signals that are convenient for
initializing and cleaning up item-specific resources.

Change-Id: If8df45b31a14cd2491db2c87eeb1c071af4e695f
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 38 insertions, 0 deletions

diff --git a/src/quicktemplates2/qquickstackview.cpp b/src/quicktemplates2/qquickstackview.cpp
index 9c9cd5c2..d75dfc23 100644
--- a/src/quicktemplates2/qquickstackview.cpp
+++ b/src/quicktemplates2/qquickstackview.cpp
@@ -988,4 +988,42 @@ QQuickStackView::Status QQuickStackAttached::status() const
     return d->element ? d->element->status : QQuickStackView::Inactive;
 }
 
+/*!
+    \qmlattachedsignal QtQuick.Controls::StackView::activated()
+    \since QtQuick.Controls 2.1
+
+    This attached signal is emitted when the item it's attached to is activated in the stack.
+
+    \sa status
+*/
+
+/*!
+    \qmlattachedsignal QtQuick.Controls::StackView::deactivated()
+    \since QtQuick.Controls 2.1
+
+    This attached signal is emitted when the item it's attached to is deactivated in the stack.
+
+    \sa status
+*/
+
+/*!
+    \qmlattachedsignal QtQuick.Controls::StackView::activating()
+    \since QtQuick.Controls 2.1
+
+    This attached signal is emitted when the item it's attached to is in the process of being
+    activated in the stack.
+
+    \sa status
+*/
+
+/*!
+    \qmlattachedsignal QtQuick.Controls::StackView::deactivating()
+    \since QtQuick.Controls 2.1
+
+    This attached signal is emitted when the item it's attached to is in the process of being
+    dectivated in the stack.
+
+    \sa status
+*/
+
 QT_END_NAMESPACE