Undo: update filter flag when dives change

The filter code is strange: it actually only checks the
dive->hidden_by_filter flag. Thus, before propagating the dive
changed signal, this flag has to be updated. Do this in the
DiveTripModel. Ultimately, this should be refactored.

Moreover, if the filter-flag changed notify the frontend
of a changed trip so that the trip is hidden / unhidden.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

1 files changed, 12 insertions, 0 deletions

diff --git a/qt-models/filtermodels.cpp b/qt-models/filtermodels.cpp
index 5fd9ed1f7..a0c910244 100644
--- a/qt-models/filtermodels.cpp
+++ b/qt-models/filtermodels.cpp
@@ -249,6 +249,18 @@ void MultiFilterSortModel::myInvalidate()
 #endif
 }
 
+bool MultiFilterSortModel::updateDive(struct dive *d)
+{
+	bool oldStatus = !d->hidden_by_filter;
+	bool newStatus = showDive(d);
+	bool changed = oldStatus != newStatus;
+	if (changed) {
+		filter_dive(d, newStatus);
+		divesDisplayed += newStatus - oldStatus;
+	}
+	return changed;
+}
+
 void MultiFilterSortModel::clearFilter()
 {
 	myInvalidate();