refactor contexts

pkg/gui/context/menu_context.go

@@ -0,0 +1,108 @@
+package context
+
+import (
+	"github.com/jesseduffield/gocui"
+	"github.com/jesseduffield/lazygit/pkg/gui/context/traits"
+	"github.com/jesseduffield/lazygit/pkg/gui/presentation"
+	"github.com/jesseduffield/lazygit/pkg/gui/types"
+)
+
+type MenuContext struct {
+	*MenuViewModel
+	*ListContextTrait
+}
+
+var _ types.IListContext = (*MenuContext)(nil)
+
+func NewMenuContext(
+	view *gocui.View,
+
+	onFocus func(...types.OnFocusOpts) error,
+	onRenderToMain func(...types.OnFocusOpts) error,
+	onFocusLost func() error,
+
+	c *types.ControllerCommon,
+	getOptionsMap func() map[string]string,
+) *MenuContext {
+	viewModel := NewMenuViewModel()
+
+	return &MenuContext{
+		MenuViewModel: viewModel,
+		ListContextTrait: &ListContextTrait{
+			Context: NewSimpleContext(NewBaseContext(NewBaseContextOpts{
+				ViewName:        "menu",
+				Key:             "menu",
+				Kind:            types.PERSISTENT_POPUP,
+				OnGetOptionsMap: getOptionsMap,
+				Focusable:       true,
+			}), ContextCallbackOpts{
+				OnFocus:        onFocus,
+				OnFocusLost:    onFocusLost,
+				OnRenderToMain: onRenderToMain,
+			}),
+			getDisplayStrings: viewModel.GetDisplayStrings,
+			list:              viewModel,
+			viewTrait:         NewViewTrait(view),
+			c:                 c,
+		},
+	}
+}
+
+// TODO: remove this thing.
+func (self *MenuContext) GetSelectedItemId() string {
+	item := self.GetSelected()
+	if item == nil {
+		return ""
+	}
+
+	return item.DisplayString
+}
+
+type MenuViewModel struct {
+	*traits.ListCursor
+	menuItems []*types.MenuItem
+}
+
+func NewMenuViewModel() *MenuViewModel {
+	self := &MenuViewModel{
+		menuItems: nil,
+	}
+
+	self.ListCursor = traits.NewListCursor(self)
+
+	return self
+}
+
+func (self *MenuViewModel) GetItemsLength() int {
+	return len(self.menuItems)
+}
+
+func (self *MenuViewModel) GetSelected() *types.MenuItem {
+	if self.GetItemsLength() == 0 {
+		return nil
+	}
+
+	return self.menuItems[self.GetSelectedLineIdx()]
+}
+
+func (self *MenuViewModel) SetMenuItems(items []*types.MenuItem) {
+	self.menuItems = items
+}
+
+// TODO: move into presentation package
+func (self *MenuViewModel) GetDisplayStrings(startIdx int, length int) [][]string {
+	stringArrays := make([][]string, len(self.menuItems))
+	for i, item := range self.menuItems {
+		if item.DisplayStrings == nil {
+			styledStr := item.DisplayString
+			if item.OpensMenu {
+				styledStr = presentation.OpensMenuStyle(styledStr)
+			}
+			stringArrays[i] = []string{styledStr}
+		} else {
+			stringArrays[i] = item.DisplayStrings
+		}
+	}
+
+	return stringArrays
+}