Fix add/removeMapItemGroup not checking if the item is added to a map

Currently these methods aren't checking if a group is already added
to another map.
This patch fixes it.

Change-Id: I58a5e633b44abfcae5c362f8e97d4c6706869ac5
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>

3 files changed, 20 insertions, 6 deletions

diff --git a/src/location/declarativemaps/qdeclarativegeomap.cpp b/src/location/declarativemaps/qdeclarativegeomap.cpp
index 1f2886d8..f5d2bdb5 100644
--- a/src/location/declarativemaps/qdeclarativegeomap.cpp
+++ b/src/location/declarativemaps/qdeclarativegeomap.cpp
@@ -1849,13 +1849,11 @@ void QDeclarativeGeoMap::clearMapItems()
 */
 void QDeclarativeGeoMap::addMapItemGroup(QDeclarativeGeoMapItemGroup *itemGroup)
 {
-    if (!itemGroup)
+    if (!itemGroup || itemGroup->quickMap()) // || Already added to some map
         return;
 
+    itemGroup->setQuickMap(this);
     QPointer<QDeclarativeGeoMapItemGroup> g(itemGroup);
-    if (m_mapItemGroups.contains(g))
-        return;
-
     m_mapItemGroups.append(g);
     const QList<QQuickItem *> quickKids = g->childItems();
     for (auto c: quickKids) {
@@ -1877,7 +1875,7 @@ void QDeclarativeGeoMap::addMapItemGroup(QDeclarativeGeoMapItemGroup *itemGroup)
 */
 void QDeclarativeGeoMap::removeMapItemGroup(QDeclarativeGeoMapItemGroup *itemGroup)
 {
-    if (!itemGroup)
+    if (!itemGroup || itemGroup->quickMap() != this) // cant remove an itemGroup added to another map
         return;
 
     QPointer<QDeclarativeGeoMapItemGroup> g(itemGroup);
@@ -1890,6 +1888,7 @@ void QDeclarativeGeoMap::removeMapItemGroup(QDeclarativeGeoMapItemGroup *itemGro
         if (mapItem)
             removeMapItem(mapItem);
     }
+    itemGroup->setQuickMap(nullptr);
     itemGroup->setParentItem(0);
 }
 
diff --git a/src/location/declarativemaps/qdeclarativegeomapitemgroup.cpp b/src/location/declarativemaps/qdeclarativegeomapitemgroup.cpp
index ee382353..59aaaa26 100644
--- a/src/location/declarativemaps/qdeclarativegeomapitemgroup.cpp
+++ b/src/location/declarativemaps/qdeclarativegeomapitemgroup.cpp
@@ -135,7 +135,7 @@ QT_BEGIN_NAMESPACE
     \image api-mapitemgroup.png
 */
 
-QDeclarativeGeoMapItemGroup::QDeclarativeGeoMapItemGroup(QQuickItem *parent): QQuickItem(parent)
+QDeclarativeGeoMapItemGroup::QDeclarativeGeoMapItemGroup(QQuickItem *parent): QQuickItem(parent), m_quickMap(nullptr)
 {
 
 }
@@ -145,4 +145,14 @@ QDeclarativeGeoMapItemGroup::~QDeclarativeGeoMapItemGroup()
 
 }
 
+void QDeclarativeGeoMapItemGroup::setQuickMap(QDeclarativeGeoMap *quickMap)
+{
+    m_quickMap = quickMap;
+}
+
+QDeclarativeGeoMap *QDeclarativeGeoMapItemGroup::quickMap() const
+{
+    return m_quickMap;
+}
+
 QT_END_NAMESPACE
diff --git a/src/location/declarativemaps/qdeclarativegeomapitemgroup_p.h b/src/location/declarativemaps/qdeclarativegeomapitemgroup_p.h
index 1b008d71..f91d291c 100644
--- a/src/location/declarativemaps/qdeclarativegeomapitemgroup_p.h
+++ b/src/location/declarativemaps/qdeclarativegeomapitemgroup_p.h
@@ -53,6 +53,7 @@
 
 QT_BEGIN_NAMESPACE
 
+class QDeclarativeGeoMap;
 class Q_LOCATION_PRIVATE_EXPORT QDeclarativeGeoMapItemGroup : public QQuickItem
 {
     Q_OBJECT
@@ -60,6 +61,10 @@ public:
     explicit QDeclarativeGeoMapItemGroup(QQuickItem *parent = 0);
     virtual ~QDeclarativeGeoMapItemGroup();
 
+    void setQuickMap(QDeclarativeGeoMap *quickMap);
+    QDeclarativeGeoMap *quickMap() const;
+private:
+    QDeclarativeGeoMap *m_quickMap;
 };
 
 QT_END_NAMESPACE