feat(#69): add Vim Keys scrolling to issue view

Author: mk-5

internal/issues/issue.go

@@ -152,10 +152,10 @@ func (view *issueView) HandleKeyEvent(ev *tcell.EventKey) {
 	if view.fuzzyFind != nil {
 		view.fuzzyFind.HandleKeyEvent(ev)
 	}
-	if ev.Key() == tcell.KeyUp {
+	if ev.Key() == tcell.KeyUp || ev.Key() == tcell.KeyTab {
 		view.scrollY = app.ClampInt(view.scrollY-1, 0, view.maxScrollY)
 	}
-	if ev.Key() == tcell.KeyDown {
+	if ev.Key() == tcell.KeyDown || ev.Key() == tcell.KeyBacktab {
 		view.scrollY = app.ClampInt(view.scrollY+1, 0, view.maxScrollY)
 	}
 }

internal/issues/issue_test.go

@@ -294,6 +294,18 @@ func Test_fjiraIssueView_HandleKeyEvent(t *testing.T) {
 
 			// then
 			assert2.Equal(t, 0, view.scrollY)
+
+			// when
+			view.HandleKeyEvent(tcell.NewEventKey(tcell.KeyBacktab, 'k', tcell.ModNone))
+
+			// then
+			assert2.Equal(t, 1, view.scrollY)
+
+			// and when
+			view.HandleKeyEvent(tcell.NewEventKey(tcell.KeyTab, 'k', tcell.ModNone))
+
+			// then
+			assert2.Equal(t, 0, view.scrollY)
 		})
 	}
 }