WTF-389 Log an exception and terminate if widget config is invalid

If, on startup, a widget's positional configuration is invalid (ie:
cannot be displayed onscreen) then terminate the app and inform about
which widget is erroring

wtf/bargraph.go

@@ -9,11 +9,13 @@ import (
 
 //BarGraph lets make graphs
 type BarGraph struct {
-	enabled    bool
-	focusable  bool
-	starChar   string
-	maxStars   int
-	Name       string
+	enabled   bool
+	focusable bool
+	key       string
+	maxStars  int
+	name      string
+	starChar  string
+
 	RefreshInt int
 	View       *tview.TextView
 
@@ -31,9 +33,10 @@ func NewBarGraph(app *tview.Application, name string, configKey string, focusabl
 	widget := BarGraph{
 		enabled:    Config.UBool(fmt.Sprintf("wtf.mods.%s.enabled", configKey), false),
 		focusable:  focusable,
-		starChar:   Config.UString(fmt.Sprintf("wtf.mods.%s.graphIcon", configKey), "|"),
+		key:        configKey,
 		maxStars:   Config.UInt(fmt.Sprintf("wtf.mods.%s.graphStars", configKey), 20),
-		Name:       Config.UString(fmt.Sprintf("wtf.mods.%s.title", configKey), name),
+		name:       Config.UString(fmt.Sprintf("wtf.mods.%s.title", configKey), name),
+		starChar:   Config.UString(fmt.Sprintf("wtf.mods.%s.graphIcon", configKey), "|"),
 		RefreshInt: Config.UInt(fmt.Sprintf("wtf.mods.%s.refreshInterval", configKey), 1),
 	}
 
@@ -83,6 +86,14 @@ func (widget *BarGraph) IsPositionable() bool {
 	return widget.Position.IsValid()
 }
 
+func (widget *BarGraph) Key() string {
+	return widget.key
+}
+
+func (widget *BarGraph) Name() string {
+	return widget.name
+}
+
 func (widget *BarGraph) RefreshInterval() int {
 	return widget.RefreshInt
 }
@@ -104,7 +115,7 @@ func (widget *BarGraph) addView(app *tview.Application, configKey string) {
 	view.SetBorder(true)
 	view.SetBorderColor(ColorFor(widget.BorderColor()))
 	view.SetDynamicColors(true)
-	view.SetTitle(widget.Name)
+	view.SetTitle(widget.Name())
 	view.SetTitleColor(ColorFor(
 		Config.UString(
 			fmt.Sprintf("wtf.mods.%s.colors.title", configKey),

wtf/text_widget.go

@@ -13,8 +13,9 @@ type TextWidget struct {
 	enabled   bool
 	focusable bool
 	focusChar string
+	key       string
+	name      string
 
-	Name       string
 	RefreshInt int
 	View       *tview.TextView
 
@@ -32,7 +33,8 @@ func NewTextWidget(app *tview.Application, name string, configKey string, focusa
 		enabled:    Config.UBool(fmt.Sprintf("wtf.mods.%s.enabled", configKey), false),
 		focusable:  focusable,
 		focusChar:  focusChar,
-		Name:       Config.UString(fmt.Sprintf("wtf.mods.%s.title", configKey), name),
+		key:        configKey,
+		name:       Config.UString(fmt.Sprintf("wtf.mods.%s.title", configKey), name),
 		RefreshInt: Config.UInt(fmt.Sprintf("wtf.mods.%s.refreshInterval", configKey)),
 	}
 
@@ -92,6 +94,14 @@ func (widget *TextWidget) IsPositionable() bool {
 	return widget.Position.IsValid()
 }
 
+func (widget *TextWidget) Key() string {
+	return widget.key
+}
+
+func (widget *TextWidget) Name() string {
+	return widget.name
+}
+
 func (widget *TextWidget) RefreshInterval() int {
 	return widget.RefreshInt
 }
@@ -135,7 +145,7 @@ func (widget *TextWidget) addView(app *tview.Application, configKey string) {
 		app.Draw()
 	})
 	view.SetDynamicColors(true)
-	view.SetTitle(widget.ContextualTitle(widget.Name))
+	view.SetTitle(widget.ContextualTitle(widget.name))
 	view.SetWrap(false)
 
 	widget.View = view

wtf/wtfable.go

@@ -11,6 +11,8 @@ type Wtfable interface {
 	BorderColor() string
 	Focusable() bool
 	FocusChar() string
+	Key() string
+	Name() string
 	SetFocusChar(string)
 	TextView() *tview.TextView