add dialog to manage highlighters

- no support for "no color"
- settings not saved to disk

filterwidget.py

@@ -129,6 +129,7 @@ class FilterWidget(QWidget):
     def filter_changed(self):
         query = self.query_field.text()
         ignore_case = self.ignore_case.isChecked()
+        is_regex = self.is_regex.isChecked()
         if len(query) == 0:
             self.reset_filter()
             return
@@ -138,7 +139,7 @@ class FilterWidget(QWidget):
 
         try:
             flags = re.IGNORECASE if ignore_case else 0
-            if self.is_regex.isChecked():
+            if is_regex:
                 regex = re.compile(query, flags=flags)
             else:
                 regex = re.compile(re.escape(query), flags=flags)
@@ -147,8 +148,8 @@ class FilterWidget(QWidget):
             self.filter_model.truncate()
             return
 
-        self.source_model.set_query_highlight(regex)
-        self.filter_model.set_query_highlight(regex)
+        self.source_model.set_query_highlight(query, ignore_case, is_regex)
+        self.filter_model.set_query_highlight(query, ignore_case, is_regex)
 
         self.filter_task = FilterTask(
             self.source_model,