Decouple modules from global config

Rather than referencing wtc.Config, instead pass the global config
Also, look up config for the module early and pass that in sooner, to deal with fewer long paths and get rid of the
ConfigKey variable

wtf/text_widget.go

@@ -14,7 +14,6 @@ type TextWidget struct {
 	enabled         bool
 	focusable       bool
 	focusChar       string
-	key             string
 	name            string
 	refreshInterval int
 
@@ -31,7 +30,6 @@ func NewTextWidget(app *tview.Application, commonSettings *cfg.Common, focusable
 		enabled:         commonSettings.Enabled,
 		focusable:       focusable,
 		focusChar:       commonSettings.FocusChar(),
-		key:             commonSettings.ConfigKey,
 		name:            commonSettings.Name,
 		refreshInterval: commonSettings.RefreshInterval,
 	}
@@ -92,10 +90,6 @@ 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
 }

wtf/widget_validator.go

@@ -12,7 +12,7 @@ func ValidateWidgets(widgets []Wtfable) (bool, error) {
 
 	for _, widget := range widgets {
 		if widget.Enabled() && !widget.IsPositionable() {
-			errStr := fmt.Sprintf("Widget config has invalid values: %s", widget.Key())
+			errStr := fmt.Sprintf("Widget config has invalid values: %s", widget.Name())
 			log.Fatalln(errStr)
 		}
 	}

wtf/wtfable.go

@@ -11,7 +11,6 @@ type Wtfable interface {
 	BorderColor() string
 	FocusChar() string
 	Focusable() bool
-	Key() string
 	Name() string
 	SetFocusChar(string)
 	TextView() *tview.TextView