Enable incremental updates in PlaceSearchModel

This way pages can be changed without resetting the model.
To achieve this, new members into QPlaceSearchRequestPrivate
are introduced, to keep the relationship between a request
for one page, and the previous or the next page.
In this way sparse population of the model becomes possible.

Change-Id: Ic8db0281408f3500ba83f78c7e152ee0b68cd099
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/plugins/geoservices/osm/qplacesearchreplyosm.cpp b/src/plugins/geoservices/osm/qplacesearchreplyosm.cpp
index 0228a975..80c50d1b 100644
--- a/src/plugins/geoservices/osm/qplacesearchreplyosm.cpp
+++ b/src/plugins/geoservices/osm/qplacesearchreplyosm.cpp
@@ -48,6 +48,7 @@
 #include <QtPositioning/QGeoRectangle>
 #include <QtLocation/QPlaceResult>
 #include <QtLocation/QPlaceSearchRequest>
+#include <QtLocation/private/qplacesearchrequest_p.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -135,6 +136,9 @@ void QPlaceSearchReplyOsm::replyFinished()
 
         parameters.insert(QStringLiteral("ExcludePlaceIds"), epi);
         r.setSearchContext(parameters);
+        QPlaceSearchRequestPrivate *rpimpl = QPlaceSearchRequestPrivate::get(r);
+        rpimpl->related = true;
+        rpimpl->page--;
         setPreviousPageRequest(r);
     }
 
@@ -147,6 +151,9 @@ void QPlaceSearchReplyOsm::replyFinished()
 
         parameters.insert(QStringLiteral("ExcludePlaceIds"), epi);
         r.setSearchContext(parameters);
+        QPlaceSearchRequestPrivate *rpimpl = QPlaceSearchRequestPrivate::get(r);
+        rpimpl->related = true;
+        rpimpl->page++;
         setNextPageRequest(r);
     }