emit currentSectionChanged when section changes in ListView.

Task-number: QTBUG-13981
Reviewed-by: Michael Brasser

2 files changed, 18 insertions, 3 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativelistview.cpp b/src/declarative/graphicsitems/qdeclarativelistview.cpp
index 6b46bc5..4943aef 100644
--- a/src/declarative/graphicsitems/qdeclarativelistview.cpp
+++ b/src/declarative/graphicsitems/qdeclarativelistview.cpp
@@ -1009,18 +1009,27 @@ void QDeclarativeListViewPrivate::updateSections()
 
 void QDeclarativeListViewPrivate::updateCurrentSection()
 {
+    Q_Q(QDeclarativeListView);
     if (!sectionCriteria || visibleItems.isEmpty()) {
-        currentSection.clear();
+        if (!currentSection.isEmpty()) {
+            currentSection.clear();
+            emit q->currentSectionChanged();
+        }
         return;
     }
     int index = 0;
     while (index < visibleItems.count() && visibleItems.at(index)->endPosition() < position())
         ++index;
 
+    QString newSection = currentSection;
     if (index < visibleItems.count())
-        currentSection = visibleItems.at(index)->attached->section();
+        newSection = visibleItems.at(index)->attached->section();
     else
-        currentSection = visibleItems.first()->attached->section();
+        newSection = visibleItems.first()->attached->section();
+    if (newSection != currentSection) {
+        currentSection = newSection;
+        emit q->currentSectionChanged();
+    }
 }
 
 void QDeclarativeListViewPrivate::updateCurrent(int modelIndex)
diff --git a/tests/auto/declarative/qdeclarativelistview/tst_qdeclarativelistview.cpp b/tests/auto/declarative/qdeclarativelistview/tst_qdeclarativelistview.cpp
index 6452bae..65ff635 100644
--- a/tests/auto/declarative/qdeclarativelistview/tst_qdeclarativelistview.cpp
+++ b/tests/auto/declarative/qdeclarativelistview/tst_qdeclarativelistview.cpp
@@ -937,6 +937,8 @@ void tst_QDeclarativeListView::sections()
         QCOMPARE(next->text().toInt(), (i+1)/5);
     }
 
+    QSignalSpy currentSectionChangedSpy(listview, SIGNAL(currentSectionChanged()));
+
     // Remove section boundary
     model.removeItem(5);
 
@@ -972,9 +974,13 @@ void tst_QDeclarativeListView::sections()
     listview->setContentY(140);
     QTRY_COMPARE(listview->currentSection(), QString("1"));
 
+    QTRY_COMPARE(currentSectionChangedSpy.count(), 1);
+
     listview->setContentY(20);
     QTRY_COMPARE(listview->currentSection(), QString("0"));
 
+    QTRY_COMPARE(currentSectionChangedSpy.count(), 2);
+
     item = findItem<QDeclarativeItem>(contentItem, "wrapper", 1);
     QTRY_VERIFY(item);
     QTRY_COMPARE(item->height(), 20.0);