Filter: update counts if dives added / removed

Update the filter counts if dives were added removed by the
undo commands. The undo commands call into the filter model
at the right time so that hidden_by_filter is already set.
The filter model keeps track of the counts and emits a signal,
which is caught by the widget.

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

2 files changed, 24 insertions, 0 deletions

diff --git a/qt-models/filtermodels.cpp b/qt-models/filtermodels.cpp
index 53149eba2..5168e32d8 100644
--- a/qt-models/filtermodels.cpp
+++ b/qt-models/filtermodels.cpp
@@ -79,6 +79,9 @@ MultiFilterSortModel::MultiFilterSortModel(QObject *parent) : QSortFilterProxyMo
 {
 	setFilterKeyColumn(-1); // filter all columns
 	setFilterCaseSensitivity(Qt::CaseInsensitive);
+
+	connect(&diveListNotifier, &DiveListNotifier::divesAdded, this, &MultiFilterSortModel::divesAdded);
+	connect(&diveListNotifier, &DiveListNotifier::divesDeleted, this, &MultiFilterSortModel::divesDeleted);
 }
 
 void MultiFilterSortModel::resetModel(DiveTripModelBase::Layout layout)
@@ -235,3 +238,21 @@ void MultiFilterSortModel::filterDataChanged(const FilterData &data)
 	filterData = data;
 	myInvalidate();
 }
+
+void MultiFilterSortModel::divesAdded(dive_trip *, bool, const QVector<dive *> &dives)
+{
+	for (dive *d: dives) {
+		if (!d->hidden_by_filter)
+			++divesDisplayed;
+	}
+	emit countsChanged();
+}
+
+void MultiFilterSortModel::divesDeleted(dive_trip *, bool, const QVector<dive *> &dives)
+{
+	for (dive *d: dives) {
+		if (!d->hidden_by_filter)
+			--divesDisplayed;
+	}
+	emit countsChanged();
+}
diff --git a/qt-models/filtermodels.h b/qt-models/filtermodels.h
index 1925bc422..faaae8c2f 100644
--- a/qt-models/filtermodels.h
+++ b/qt-models/filtermodels.h
@@ -57,9 +57,12 @@ slots:
 	void filterChanged(const QModelIndex &from, const QModelIndex &to, const QVector<int> &roles);
 	void resetModel(DiveTripModelBase::Layout layout);
 	void filterDataChanged(const FilterData &data);
+	void divesAdded(struct dive_trip *, bool, const QVector<dive *> &dives);
+	void divesDeleted(struct dive_trip *, bool, const QVector<dive *> &dives);
 
 signals:
 	void filterFinished();
+	void countsChanged();
 
 private:
 	MultiFilterSortModel(QObject *parent = 0);