Filter: implement any-of mode

Add an additional mode to the tags, people and location filters: any_of.
Replace the original invert-bool by an enum.
Move the common code into a distinct function.

Reported-by: Willem Ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

2 files changed, 36 insertions, 21 deletions

diff --git a/qt-models/filtermodels.cpp b/qt-models/filtermodels.cpp
index 1a292741a..93bb59abf 100644
--- a/qt-models/filtermodels.cpp
+++ b/qt-models/filtermodels.cpp
@@ -24,28 +24,37 @@ namespace {
 				   { return s2.trimmed().contains(s.trimmed(), Qt::CaseInsensitive); } );
 	}
 
-	bool hasTags(const QStringList &tags, const struct dive *d, bool negate)
+	// Check whether either all, any or none of the items of the first list is
+	// in the second list as a super string.
+	// The mode is controlled by the second argument
+	bool check(const QStringList &items, const QStringList &list, FilterData::Mode mode)
+	{
+		bool negate = mode == FilterData::Mode::NONE_OF;
+		bool any_of = mode == FilterData::Mode::ANY_OF;
+		auto fun = [&list, negate](const QString &item)
+			   { return listContainsSuperstring(list, item) != negate; };
+		return any_of ? std::any_of(items.begin(), items.end(), fun)
+			      : std::all_of(items.begin(), items.end(), fun);
+	}
+
+	bool hasTags(const QStringList &tags, const struct dive *d, FilterData::Mode mode)
 	{
 		if (tags.isEmpty())
 			return true;
 		QStringList dive_tags = get_taglist_string(d->tag_list).split(",");
-
-		return std::all_of(tags.begin(), tags.end(), [&dive_tags, negate](const QString &tag)
-				   { return listContainsSuperstring(dive_tags, tag) != negate; } );
+		return check(tags, dive_tags, mode);
 	}
 
-	bool hasPersons(const QStringList &people, const struct dive *d, bool negate)
+	bool hasPersons(const QStringList &people, const struct dive *d, FilterData::Mode mode)
 	{
 		if (people.isEmpty())
 			return true;
 		QStringList dive_people = QString(d->buddy).split(",", QString::SkipEmptyParts)
 			+ QString(d->divemaster).split(",", QString::SkipEmptyParts);
-
-		return std::all_of(people.begin(), people.end(), [&dive_people, negate](const QString &person)
-				   { return listContainsSuperstring(dive_people, person) != negate; } );
+		return check(people, dive_people, mode);
 	}
 
-	bool hasLocations(const QStringList &locations, const struct dive *d, bool negate)
+	bool hasLocations(const QStringList &locations, const struct dive *d, FilterData::Mode mode)
 	{
 		if (locations.isEmpty())
 			return true;
@@ -56,12 +65,11 @@ namespace {
 		if (d->dive_site)
 			diveLocations.push_back(QString(d->dive_site->name));
 
-		return std::all_of(locations.begin(), locations.end(), [&diveLocations, negate](const QString &location)
-				   { return listContainsSuperstring(diveLocations, location) != negate; } );
+		return check(locations, diveLocations, mode);
 	}
 
-	// TODO: Finish this iimplementation.
-	bool hasEquipment(const QStringList &, const struct dive *, bool)
+	// TODO: Finish this implementation.
+	bool hasEquipment(const QStringList &, const struct dive *, FilterData::Mode)
 	{
 		return true;
 	}
@@ -129,18 +137,18 @@ bool MultiFilterSortModel::showDive(const struct dive *d) const
 		return false;
 
 	// tags.
-	if (!hasTags(filterData.tags, d, filterData.tagsNegate))
+	if (!hasTags(filterData.tags, d, filterData.tagsMode))
 		return false;
 
 	// people
-	if (!hasPersons(filterData.people, d, filterData.peopleNegate))
+	if (!hasPersons(filterData.people, d, filterData.peopleMode))
 		return false;
 
 	// Location
-	if (!hasLocations(filterData.location, d, filterData.locationNegate))
+	if (!hasLocations(filterData.location, d, filterData.locationMode))
 		return false;
 
-	if (!hasEquipment(filterData.equipment, d, filterData.equipmentNegate))
+	if (!hasEquipment(filterData.equipment, d, filterData.equipmentMode))
 		return false;
 
 	// Planned/Logged
diff --git a/qt-models/filtermodels.h b/qt-models/filtermodels.h
index 39f6f83e4..7370b8d5f 100644
--- a/qt-models/filtermodels.h
+++ b/qt-models/filtermodels.h
@@ -15,6 +15,13 @@ struct dive;
 struct dive_trip;
 
 struct FilterData {
+	// The mode ids are chosen such that they can be directly converted from / to combobox indices.
+	enum class Mode {
+		ALL_OF = 0,
+		ANY_OF = 1,
+		NONE_OF = 2
+	};
+
 	bool validFilter = false;
 	int minVisibility = 0;
 	int maxVisibility = 5;
@@ -35,10 +42,10 @@ struct FilterData {
 	QStringList people;
 	QStringList location;
 	QStringList equipment;
-	bool tagsNegate = false;
-	bool peopleNegate = false;
-	bool locationNegate = false;
-	bool equipmentNegate = false;
+	Mode tagsMode = Mode::ALL_OF;
+	Mode peopleMode = Mode::ALL_OF;
+	Mode locationMode = Mode::ALL_OF;
+	Mode equipmentMode = Mode::ALL_OF;
 	bool logged = true;
 	bool planned = true;
 };