refactor to make code clearer

pkg/gui/controllers/switch_to_sub_commits_controller.go

@@ -0,0 +1,81 @@
+package controllers
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/commands/loaders"
+	"github.com/jesseduffield/lazygit/pkg/commands/models"
+	"github.com/jesseduffield/lazygit/pkg/gui/types"
+)
+
+var _ types.IController = &SwitchToSubCommitsController{}
+
+type ContextWithRefName interface {
+	types.Context
+	GetSelectedRefName() string
+}
+
+type SwitchToSubCommitsController struct {
+	baseController
+	*controllerCommon
+	context ContextWithRefName
+
+	setSubCommits func([]*models.Commit)
+}
+
+func NewSwitchToSubCommitsController(
+	controllerCommon *controllerCommon,
+	setSubCommits func([]*models.Commit),
+	context ContextWithRefName,
+) *SwitchToSubCommitsController {
+	return &SwitchToSubCommitsController{
+		baseController:   baseController{},
+		controllerCommon: controllerCommon,
+		context:          context,
+		setSubCommits:    setSubCommits,
+	}
+}
+
+func (self *SwitchToSubCommitsController) GetKeybindings(opts types.KeybindingsOpts) []*types.Binding {
+	bindings := []*types.Binding{
+		{
+			Handler:     self.viewCommits,
+			Key:         opts.GetKey(opts.Config.Universal.GoInto),
+			Description: self.c.Tr.LcViewCommits,
+		},
+	}
+
+	return bindings
+}
+
+func (self *SwitchToSubCommitsController) GetOnClick() func() error {
+	return self.viewCommits
+}
+
+func (self *SwitchToSubCommitsController) viewCommits() error {
+	refName := self.context.GetSelectedRefName()
+	if refName == "" {
+		return nil
+	}
+
+	// need to populate my sub commits
+	commits, err := self.git.Loaders.Commits.GetCommits(
+		loaders.GetCommitsOptions{
+			Limit:                true,
+			FilterPath:           self.modes.Filtering.GetPath(),
+			IncludeRebaseCommits: false,
+			RefName:              refName,
+		},
+	)
+	if err != nil {
+		return err
+	}
+
+	self.setSubCommits(commits)
+	self.contexts.SubCommits.SetSelectedLineIdx(0)
+	self.contexts.SubCommits.SetParentContext(self.context)
+
+	return self.c.PushContext(self.contexts.SubCommits)
+}
+
+func (self *SwitchToSubCommitsController) Context() types.Context {
+	return self.context
+}