Show context-specific labels for <esc> in staging and patch building view

Dismissing a range selection is handled by the global escape handler for all
list views, but not for the staging and patch building views, so we need to make
the esc description dynamic for these, too.

Author: stefanhaller

pkg/gui/controllers/patch_building_controller.go

@@ -45,7 +45,7 @@ func (self *PatchBuildingController) GetKeybindings(opts types.KeybindingsOpts)
 		{
 			Key:             opts.GetKey(opts.Config.Universal.Return),
 			Handler:         self.Escape,
-			Description:     self.c.Tr.ExitCustomPatchBuilder,
+			DescriptionFunc: self.EscapeDescription,
 			DisplayOnScreen: true,
 		},
 	}
@@ -180,3 +180,18 @@ func (self *PatchBuildingController) Escape() error {
 	self.c.Helpers().PatchBuilding.Escape()
 	return nil
 }
+
+func (self *PatchBuildingController) EscapeDescription() string {
+	context := self.c.Contexts().CustomPatchBuilder
+	if state := context.GetState(); state != nil {
+		if state.SelectingRange() {
+			return self.c.Tr.DismissRangeSelect
+		}
+
+		if state.SelectingHunkEnabledByUser() {
+			return self.c.Tr.SelectLineByLine
+		}
+	}
+
+	return self.c.Tr.ExitCustomPatchBuilder
+}

pkg/gui/controllers/staging_controller.go

@@ -70,7 +70,7 @@ func (self *StagingController) GetKeybindings(opts types.KeybindingsOpts) []*typ
 		{
 			Key:             opts.GetKey(opts.Config.Universal.Return),
 			Handler:         self.Escape,
-			Description:     self.c.Tr.ReturnToFilesPanel,
+			DescriptionFunc: self.EscapeDescription,
 			DisplayOnScreen: true,
 		},
 		{
@@ -179,6 +179,20 @@ func (self *StagingController) Escape() error {
 	return nil
 }
 
+func (self *StagingController) EscapeDescription() string {
+	if state := self.context.GetState(); state != nil {
+		if state.SelectingRange() {
+			return self.c.Tr.DismissRangeSelect
+		}
+
+		if state.SelectingHunkEnabledByUser() {
+			return self.c.Tr.SelectLineByLine
+		}
+	}
+
+	return self.c.Tr.ReturnToFilesPanel
+}
+
 func (self *StagingController) TogglePanel() error {
 	if self.otherContext.GetState() != nil {
 		self.c.Context().Push(self.otherContext, types.OnFocusOpts{})