1 files changed, 36 insertions, 0 deletions
diff --git a/include/eventfilters.h b/include/eventfilters.h
new file mode 100644
index 00000000..7847608d
--- /dev/null
+++ b/include/eventfilters.h
@@ -0,0 +1,36 @@
+#ifndef EVENTFILTERS_H
+#define EVENTFILTERS_H
+
+#include <QEvent>
+#include <QLineEdit>
+
+class AOLineEditFilter : public QObject
+{
+    Q_OBJECT
+public:
+    bool preserve_selection = false;
+
+protected:
+    bool eventFilter(QObject *obj, QEvent *event) override {
+        QLineEdit *lineEdit = qobject_cast<QLineEdit *>(obj);
+       if (event->type() == QEvent::FocusOut && lineEdit != nullptr && preserve_selection) { // lost focus
+            int start = lineEdit->selectionStart();
+          #if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+            int len = lineEdit->selectionLength();
+          #else
+            int len = lineEdit->selectedText().length();
+          #endif
+            if (start != -1 && len != -1) {
+              lineEdit->setSelection(start, len);\
+              return true;
+            }
+        }
+        return false;
+    }
+signals:
+    void double_clicked();
+};
+
+
+
+#endif // EVENTFILTERS_H