Improved transitions for Row, Column, Grid, Flow

The view transitions functionality for ListView and GridView has been
integrated into the positioner elements. Not all of this
functionality is available for positioners, though, since they don't
have models (and thus cannot identify certain model operations) and
they don't manage the lifetime of their children.

Task-number: QTBUG-24336

Change-Id: I71588de289555d2ef5a763af11358bc0af7b31a7
Reviewed-by: Alan Alpert <alan.alpert@nokia.com>

1 files changed, 4 insertions, 7 deletions

diff --git a/src/quick/items/qquickpositioners_p_p.h b/src/quick/items/qquickpositioners_p_p.h
index d281f1a372..f1d174dc0a 100644
--- a/src/quick/items/qquickpositioners_p_p.h
+++ b/src/quick/items/qquickpositioners_p_p.h
@@ -66,6 +66,8 @@
 
 QT_BEGIN_NAMESPACE
 
+class QQuickItemViewTransitioner;
+
 class QQuickBasePositionerPrivate : public QQuickImplicitSizeItemPrivate, public QQuickItemChangeListener
 {
     Q_DECLARE_PUBLIC(QQuickBasePositioner)
@@ -73,7 +75,7 @@ class QQuickBasePositionerPrivate : public QQuickImplicitSizeItemPrivate, public
 public:
     QQuickBasePositionerPrivate()
         : spacing(0), type(QQuickBasePositioner::None)
-        , moveTransition(0), addTransition(0), positioningDirty(false)
+        , transitioner(0), positioningDirty(false)
         , doingPositioning(false), anchorConflict(false), layoutDirection(Qt::LeftToRight)
     {
     }
@@ -87,12 +89,7 @@ public:
     qreal spacing;
 
     QQuickBasePositioner::PositionerType type;
-    QDeclarativeTransition *moveTransition;
-    QDeclarativeTransition *addTransition;
-    QDeclarativeStateOperation::ActionList addActions;
-    QDeclarativeStateOperation::ActionList moveActions;
-    QDeclarativeTransitionManager addTransitionManager;
-    QDeclarativeTransitionManager moveTransitionManager;
+    QQuickItemViewTransitioner *transitioner;
 
     void watchChanges(QQuickItem *other);
     void unwatchChanges(QQuickItem* other);