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pkg/gui/context/list_view_model.go
75 строк
1 KB
Jesse Duffield
Reduce the chance of race condition with list cursor
28 янв 2024, 01:20
28 янв 2024, 01:20
bd7fabe
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О чём код?
package context import ( "github.com/jesseduffield/lazygit/pkg/gui/context/traits" "github.com/jesseduffield/lazygit/pkg/gui/types" "github.com/samber/lo" ) type HasID interface { ID() string } type ListViewModel[T HasID] struct { *traits.ListCursor getModel func() []T } func NewListViewModel[T HasID](getModel func() []T) *ListViewModel[T] { self := &ListViewModel[T]{ getModel: getModel, } self.ListCursor = traits.NewListCursor(func() int { return len(getModel()) }) return self } func (self *ListViewModel[T]) GetSelected() T { if self.Len() == 0 { return Zero[T]() } return self.getModel()[self.GetSelectedLineIdx()] } func (self *ListViewModel[T]) GetSelectedItemId() string { if self.Len() == 0 { return "" } return self.GetSelected().ID() } func (self *ListViewModel[T]) GetSelectedItems() ([]T, int, int) { if self.Len() == 0 { return nil, -1, -1 } startIdx, endIdx := self.GetSelectionRange() return self.getModel()[startIdx : endIdx+1], startIdx, endIdx } func (self *ListViewModel[T]) GetSelectedItemIds() ([]string, int, int) { selectedItems, startIdx, endIdx := self.GetSelectedItems() ids := lo.Map(selectedItems, func(item T, _ int) string { return item.ID() }) return ids, startIdx, endIdx } func (self *ListViewModel[T]) GetItems() []T { return self.getModel() } func Zero[T any]() T { return *new(T) } func (self *ListViewModel[T]) GetItem(index int) types.HasUrn { item := self.getModel()[index] return any(item).(types.HasUrn) }