Dynamically load style for help from skin (#1113)

internal/view/help.go

@@ -50,11 +50,19 @@ func (h *Help) Init(ctx context.Context) error {
 	h.SetBorderPadding(0, 0, 1, 1)
 	h.bindKeys()
 	h.build()
-	h.SetBackgroundColor(h.App().Styles.BgColor())
+	h.app.Styles.AddListener(h)
+	h.StylesChanged(h.app.Styles)
 
 	return nil
 }
 
+// StylesChanged notifies skin changed.
+func (h *Help) StylesChanged(s *config.Styles) {
+	h.app.Styles = s
+	h.SetBackgroundColor(s.BgColor())
+	h.updateStyle()
+}
+
 func (h *Help) bindKeys() {
 	h.Actions().Delete(ui.KeySpace, tcell.KeyCtrlSpace, tcell.KeyCtrlS, ui.KeySlash)
 	h.Actions().Set(ui.KeyActions{
@@ -287,9 +295,9 @@ func (h *Help) addSection(c int, title string, hh model.MenuHints) {
 
 	for _, hint := range hh {
 		col := c
-		h.SetCell(row, col, keyCell(hint.Mnemonic, h.maxKey))
+		h.SetCell(row, col, padCellWithRef(toMnemonic(hint.Mnemonic), h.maxKey, hint.Mnemonic))
 		col++
-		h.SetCell(row, col, infoCell(hint.Description, h.maxDesc))
+		h.SetCell(row, col, padCell(hint.Description, h.maxDesc))
 		row++
 	}
 
@@ -306,6 +314,35 @@ func (h *Help) addSection(c int, title string, hh model.MenuHints) {
 	}
 }
 
+func (h *Help) updateStyle() {
+	var key, numKey, info tcell.Style
+	key = key.Background(h.app.Styles.BgColor())
+	key = key.Foreground(h.app.Styles.K9s.Frame.Menu.KeyColor.Color())
+	key = key.Bold(true)
+
+	numKey = numKey.Background(h.app.Styles.BgColor())
+	numKey = numKey.Foreground(h.app.Styles.K9s.Frame.Menu.NumKeyColor.Color())
+	numKey = numKey.Bold(true)
+
+	info = info.Background(h.app.Styles.BgColor())
+	info = info.Foreground(h.app.Styles.K9s.Frame.Menu.FgColor.Color())
+
+	for col := 0; col < h.GetColumnCount(); col++ {
+		for row := 1; row < h.GetRowCount(); row++ {
+			c := h.GetCell(row, col)
+			if col%2 == 0 {
+				if _, err := strconv.Atoi(extractRef(c)); err != nil {
+					c.SetStyle(key)
+				} else {
+					c.SetStyle(numKey)
+				}
+			} else {
+				c.SetStyle(info)
+			}
+		}
+	}
+}
+
 // ----------------------------------------------------------------------------
 // Helpers...
 
@@ -317,6 +354,15 @@ func toMnemonic(s string) string {
 	return "<" + keyConv(strings.ToLower(s)) + ">"
 }
 
+func extractRef(c *tview.TableCell) string {
+	ref, ok := c.GetReference().(string)
+	if !ok {
+		return c.Text
+	}
+
+	return ref
+}
+
 func keyConv(s string) string {
 	if !strings.Contains(s, "alt") {
 		return s
@@ -339,23 +385,8 @@ func titleCell(title string) *tview.TableCell {
 	return c
 }
 
-func keyCell(k string, width int) *tview.TableCell {
-	c := padCell(toMnemonic(k), width)
-	if _, err := strconv.Atoi(k); err != nil {
-		c.SetTextColor(tcell.ColorDodgerBlue)
-	} else {
-		c.SetTextColor(tcell.ColorFuchsia)
-	}
-	c.SetAttributes(tcell.AttrBold)
-
-	return c
-}
-
-func infoCell(info string, width int) *tview.TableCell {
-	c := padCell(info, width)
-	c.SetTextColor(tcell.ColorWhite)
-
-	return c
+func padCellWithRef(s string, width int, ref interface{}) *tview.TableCell {
+	return padCell(s, width).SetReference(ref)
 }
 
 func padCell(s string, width int) *tview.TableCell {