Filter: replace checked-state by struct

In the future, we might be smarter about the dive-counts and calculate
them only once and incrementally (if e.g. new dives are added).
Prepare for more complex caching by turning the checked boolean into
a struct, which can then be extended by a count and other things
(e.g. the name).

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

1 files changed, 5 insertions, 1 deletions

diff --git a/qt-models/filtermodels.h b/qt-models/filtermodels.h
index bcbbf000a..8bac44680 100644
--- a/qt-models/filtermodels.h
+++ b/qt-models/filtermodels.h
@@ -11,12 +11,16 @@ struct dive;
 
 class FilterModelBase : public QStringListModel {
 	Q_OBJECT
+protected:
+	struct Item {
+		bool checked;
+	};
+	std::vector<Item> items;
 public:
 	virtual bool doFilter(const dive *d) const = 0;
 	void clearFilter();
 	void selectAll();
 	void invertSelection();
-	std::vector<char> checkState;
 	bool anyChecked;
 	bool negate;
 public