begin refactor of menu panel

pkg/gui/menu_panel.go

@@ -8,6 +8,11 @@ import (
 	"github.com/jesseduffield/lazygit/pkg/utils"
 )
 
+type menuItem struct {
+	displayStrings []string
+	onPress        func() error
+}
+
 // list panel functions
 
 func (gui *Gui) handleMenuSelect(g *gocui.Gui, v *gocui.View) error {
@@ -38,6 +43,75 @@ func (gui *Gui) handleMenuClose(g *gocui.Gui, v *gocui.View) error {
 	return gui.returnFocus(g, v)
 }
 
+type createMenuOptions struct {
+	showCancel bool
+}
+
+func (gui *Gui) createMenuNew(title string, items []*menuItem, createMenuOptions createMenuOptions) error {
+	if createMenuOptions.showCancel {
+		// this is mutative but I'm okay with that for now
+		items = append(items, &menuItem{
+			displayStrings: []string{gui.Tr.SLocalize("cancel")},
+			onPress: func() error {
+				return nil
+			},
+		})
+	}
+
+	gui.State.MenuItemCount = len(items)
+
+	stringArrays := make([][]string, len(items))
+	for i, item := range items {
+		stringArrays[i] = item.displayStrings
+	}
+
+	list := utils.RenderDisplayStrings(stringArrays)
+
+	x0, y0, x1, y1 := gui.getConfirmationPanelDimensions(gui.g, false, list)
+	menuView, _ := gui.g.SetView("menu", x0, y0, x1, y1, 0)
+	menuView.Title = title
+	menuView.FgColor = theme.GocuiDefaultTextColor
+	menuView.Clear()
+	fmt.Fprint(menuView, list)
+	gui.State.Panels.Menu.SelectedLine = 0
+
+	wrappedHandlePress := func(g *gocui.Gui, v *gocui.View) error {
+		selectedLine := gui.State.Panels.Menu.SelectedLine
+		if err := items[selectedLine].onPress(); err != nil {
+			return err
+		}
+
+		if _, err := gui.g.View("menu"); err == nil {
+			if _, err := gui.g.SetViewOnBottom("menu"); err != nil {
+				return err
+			}
+		}
+
+		return gui.returnFocus(gui.g, menuView)
+	}
+
+	gui.State.Panels.Menu.OnPress = wrappedHandlePress
+
+	for _, key := range []gocui.Key{gocui.KeySpace, gocui.KeyEnter, 'y'} {
+		_ = gui.g.DeleteKeybinding("menu", key, gocui.ModNone)
+
+		if err := gui.g.SetKeybinding("menu", nil, key, gocui.ModNone, wrappedHandlePress); err != nil {
+			return err
+		}
+	}
+
+	gui.g.Update(func(g *gocui.Gui) error {
+		if _, err := gui.g.View("menu"); err == nil {
+			if _, err := g.SetViewOnTop("menu"); err != nil {
+				return err
+			}
+		}
+		currentView := gui.g.CurrentView()
+		return gui.switchFocus(gui.g, currentView, menuView)
+	})
+	return nil
+}
+
 func (gui *Gui) createMenu(title string, items interface{}, itemCount int, handlePress func(int) error) error {
 	isFocused := gui.g.CurrentView().Name() == "menu"
 	gui.State.MenuItemCount = itemCount