Avoid showing <esc> in options map when it doesn't do anything

The code duplication between Escape and EscapeEnabled is unfortunate, but I
don't see a better way to solve this.

pkg/gui/controllers/global_controller.go

@@ -115,11 +115,12 @@ func (self *GlobalController) GetKeybindings(opts types.KeybindingsOpts) []*type
 			Handler:  self.quitWithoutChangingDirectory,
 		},
 		{
-			Key:             opts.GetKey(opts.Config.Universal.Return),
-			Modifier:        gocui.ModNone,
-			Handler:         self.escape,
-			Description:     self.c.Tr.Cancel,
-			DisplayOnScreen: true,
+			Key:               opts.GetKey(opts.Config.Universal.Return),
+			Modifier:          gocui.ModNone,
+			Handler:           self.escape,
+			Description:       self.c.Tr.Cancel,
+			GetDisabledReason: self.escapeEnabled,
+			DisplayOnScreen:   true,
 		},
 		{
 			Key:         opts.GetKey(opts.Config.Universal.ToggleWhitespaceInDiffView),
@@ -190,6 +191,16 @@ func (self *GlobalController) escape() error {
 	return (&QuitActions{c: self.c}).Escape()
 }
 
+func (self *GlobalController) escapeEnabled() *types.DisabledReason {
+	if (&QuitActions{c: self.c}).EscapeEnabled() {
+		return nil
+	}
+
+	// The empty error text is intentional. We don't want to show an error
+	// toast for this, but only hide it from the options map.
+	return &types.DisabledReason{Text: ""}
+}
+
 func (self *GlobalController) toggleWhitespace() error {
 	return (&ToggleWhitespaceAction{c: self.c}).Call()
 }

pkg/gui/controllers/quit_actions.go

@@ -48,6 +48,8 @@ func (self *QuitActions) confirmQuitDuringUpdate() error {
 }
 
 func (self *QuitActions) Escape() error {
+	// If you make changes to this function, be sure to update EscapeEnabled accordingly.
+
 	currentContext := self.c.Context().Current()
 
 	if listContext, ok := currentContext.(types.IListContext); ok {
@@ -90,3 +92,41 @@ func (self *QuitActions) Escape() error {
 
 	return nil
 }
+
+func (self *QuitActions) EscapeEnabled() bool {
+	currentContext := self.c.Context().Current()
+
+	if listContext, ok := currentContext.(types.IListContext); ok {
+		if listContext.GetList().IsSelectingRange() {
+			return true
+		}
+	}
+
+	if ctx, ok := currentContext.(types.IFilterableContext); ok {
+		if ctx.IsFiltering() {
+			return true
+		}
+	}
+
+	parentContext := currentContext.GetParentContext()
+	if parentContext != nil {
+		return true
+	}
+
+	for _, mode := range self.c.Helpers().Mode.Statuses() {
+		if mode.IsActive() {
+			return true
+		}
+	}
+
+	repoPathStack := self.c.State().GetRepoPathStack()
+	if !repoPathStack.IsEmpty() {
+		return true
+	}
+
+	if self.c.UserConfig().QuitOnTopLevelReturn {
+		return true
+	}
+
+	return false
+}

pkg/integration/tests/ui/keybinding_suggestions_when_switching_repos.go

@@ -31,12 +31,12 @@ var KeybindingSuggestionsWhenSwitchingRepos = NewIntegrationTest(NewIntegrationT
 
 		t.Views().Files().Focus()
 		t.Views().Options().Content(
-			Equals("Commit: c | Stash: s | Reset: D | Keybindings: ? | Cancel: <esc>"))
+			Equals("Commit: c | Stash: s | Reset: D | Keybindings: ?"))
 
 		switchToRepo("other")
 		switchToRepo("repo")
 
 		t.Views().Options().Content(
-			Equals("Commit: c | Stash: s | Reset: D | Keybindings: ? | Cancel: <esc>"))
+			Equals("Commit: c | Stash: s | Reset: D | Keybindings: ?"))
 	},
 })