Add select-all, deselect-all and invert-selection options to filters

To every filter list add a menu button that allows selection of all,
selection of none or inversion of selection.

Implements #435.

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

1 files changed, 15 insertions, 0 deletions

diff --git a/qt-models/filtermodels.cpp b/qt-models/filtermodels.cpp
index 26759571a..0dece6f8f 100644
--- a/qt-models/filtermodels.cpp
+++ b/qt-models/filtermodels.cpp
@@ -100,6 +100,21 @@ void FilterModelBase::clearFilter()
 	emit dataChanged(createIndex(0,0), createIndex(rowCount()-1, 0));
 }
 
+void FilterModelBase::selectAll()
+{
+	std::fill(checkState.begin(), checkState.end(), true);
+	anyChecked = true;
+	emit dataChanged(createIndex(0,0), createIndex(rowCount()-1, 0));
+}
+
+void FilterModelBase::invertSelection()
+{
+	for (char &b: checkState)
+		b = !b;
+	anyChecked = std::any_of(checkState.begin(), checkState.end(), [](char b){return !!b;});
+	emit dataChanged(createIndex(0,0), createIndex(rowCount()-1, 0));
+}
+
 SuitsFilterModel::SuitsFilterModel(QObject *parent) : FilterModelBase(parent)
 {
 }