use generics to DRY up context code

pkg/gui/context/remotes_context.go

@@ -3,12 +3,11 @@ package context
 import (
 	"github.com/jesseduffield/gocui"
 	"github.com/jesseduffield/lazygit/pkg/commands/models"
-	"github.com/jesseduffield/lazygit/pkg/gui/context/traits"
 	"github.com/jesseduffield/lazygit/pkg/gui/types"
 )
 
 type RemotesContext struct {
-	*RemotesViewModel
+	*BasicViewModel[*models.Remote]
 	*ListContextTrait
 }
 
@@ -25,10 +24,10 @@ func NewRemotesContext(
 
 	c *types.HelperCommon,
 ) *RemotesContext {
-	viewModel := NewRemotesViewModel(getModel)
+	viewModel := NewBasicViewModel(getModel)
 
 	return &RemotesContext{
-		RemotesViewModel: viewModel,
+		BasicViewModel: viewModel,
 		ListContextTrait: &ListContextTrait{
 			Context: NewSimpleContext(NewBaseContext(NewBaseContextOpts{
 				ViewName:   "branches",
@@ -57,30 +56,3 @@ func (self *RemotesContext) GetSelectedItemId() string {
 
 	return item.ID()
 }
-
-type RemotesViewModel struct {
-	*traits.ListCursor
-	getModel func() []*models.Remote
-}
-
-func NewRemotesViewModel(getModel func() []*models.Remote) *RemotesViewModel {
-	self := &RemotesViewModel{
-		getModel: getModel,
-	}
-
-	self.ListCursor = traits.NewListCursor(self)
-
-	return self
-}
-
-func (self *RemotesViewModel) GetItemsLength() int {
-	return len(self.getModel())
-}
-
-func (self *RemotesViewModel) GetSelected() *models.Remote {
-	if self.GetItemsLength() == 0 {
-		return nil
-	}
-
-	return self.getModel()[self.GetSelectedLineIdx()]
-}