Scroll to top when filtering and retain selection when cancelling filter

pkg/gui/context/filtered_list.go

@@ -68,3 +68,17 @@ func (self *FilteredList[T]) applyFilter() {
 func (self *FilteredList[T]) match(haystack string, needle string) bool {
 	return utils.CaseInsensitiveContains(haystack, needle)
 }
+
+func (self *FilteredList[T]) UnfilteredIndex(index int) int {
+	if self.filteredIndices == nil {
+		return index
+	}
+
+	// we use -1 when there are no items
+	if index == -1 {
+		return -1
+	}
+
+	// TODO: mutex
+	return self.filteredIndices[index]
+}

pkg/gui/context/filtered_list_view_model.go

@@ -21,3 +21,13 @@ func NewFilteredListViewModel[T any](getList func() []T, getFilterFields func(T)
 
 // used for type switch
 func (self *FilteredListViewModel[T]) IsFilterableContext() {}
+
+func (self *FilteredListViewModel[T]) ClearFilter() {
+	// Set the selected line index to the unfiltered index of the currently selected line,
+	// so that the current item is still selected after the filter is cleared.
+	unfilteredIndex := self.FilteredList.UnfilteredIndex(self.GetSelectedLineIdx())
+
+	self.FilteredList.ClearFilter()
+
+	self.SetSelectedLineIdx(unfilteredIndex)
+}

pkg/gui/controllers/helpers/search_helper.go

@@ -123,14 +123,13 @@ func (self *SearchHelper) ConfirmFilter() error {
 	// We also do this on each keypress but we do it here again just in case
 	state := self.searchState()
 
-	context, ok := state.Context.(types.IFilterableContext)
+	_, ok := state.Context.(types.IFilterableContext)
 	if !ok {
 		self.c.Log.Warnf("Context %s is not filterable", state.Context.GetKey())
 		return nil
 	}
 
-	context.SetFilter(self.promptContent())
-	_ = self.c.PostRefreshUpdate(state.Context)
+	self.OnPromptContentChanged(self.promptContent())
 
 	return self.c.PopContext()
 }
@@ -187,6 +186,8 @@ func (self *SearchHelper) OnPromptContentChanged(searchString string) {
 	state := self.searchState()
 	switch context := state.Context.(type) {
 	case types.IFilterableContext:
+		context.SetSelectedLineIdx(0)
+		_ = context.GetView().SetOriginY(0)
 		context.SetFilter(searchString)
 		_ = self.c.PostRefreshUpdate(context)
 	case types.ISearchableContext:

pkg/gui/types/context.go

@@ -89,6 +89,7 @@ type Context interface {
 
 type IFilterableContext interface {
 	Context
+	IListPanelState
 
 	SetFilter(string)
 	GetFilter() string