Begin refactoring gui

This begins a big refactor of moving more code out of the Gui struct into contexts, controllers, and helpers. We also move some code into structs in the
gui package purely for the sake of better encapsulation

pkg/gui/controllers/reflog_commits_controller.go

@@ -0,0 +1,53 @@
+package controllers
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/gui/context"
+	"github.com/jesseduffield/lazygit/pkg/gui/types"
+)
+
+type ReflogCommitsController struct {
+	baseController
+	*controllerCommon
+	context *context.ReflogCommitsContext
+}
+
+var _ types.IController = &ReflogCommitsController{}
+
+func NewReflogCommitsController(
+	common *controllerCommon,
+	context *context.ReflogCommitsContext,
+) *ReflogCommitsController {
+	return &ReflogCommitsController{
+		baseController:   baseController{},
+		controllerCommon: common,
+		context:          context,
+	}
+}
+
+func (self *ReflogCommitsController) Context() types.Context {
+	return self.context
+}
+
+func (self *ReflogCommitsController) GetOnRenderToMain() func() error {
+	return func() error {
+		return self.helpers.Diff.WithDiffModeCheck(func() error {
+			commit := self.context.GetSelected()
+			var task types.UpdateTask
+			if commit == nil {
+				task = types.NewRenderStringTask("No reflog history")
+			} else {
+				cmdObj := self.c.Git().Commit.ShowCmdObj(commit.Sha, self.c.Modes().Filtering.GetPath(), self.c.State().GetIgnoreWhitespaceInDiffView())
+
+				task = types.NewRunPtyTask(cmdObj.GetCmd())
+			}
+
+			return self.c.RenderToMainViews(types.RefreshMainOpts{
+				Pair: self.c.MainViewPairs().Normal,
+				Main: &types.ViewUpdateOpts{
+					Title: "Reflog Entry",
+					Task:  task,
+				},
+			})
+		})
+	}
+}