Add the MultiSourceWidget concept

wtf/helpful_widget.go

@@ -12,13 +12,11 @@ type HelpfulWidget struct {
 }
 
 func NewHelpfulWidget(app *tview.Application, pages *tview.Pages, helpText string) HelpfulWidget {
-	widget := HelpfulWidget{
+	return HelpfulWidget{
 		app:      app,
 		helpText: helpText,
 		pages:    pages,
 	}
-
-	return widget
 }
 
 func (widget *HelpfulWidget) SetView(view *tview.TextView) {

wtf/multisource_widget.go

@@ -0,0 +1,38 @@
+package wtf
+
+import (
+	"fmt"
+)
+
+type MultiSourceWidget struct {
+	Idx     int
+	Sources []string
+}
+
+func NewMultiSourceWidget() MultiSourceWidget {
+	return MultiSourceWidget{}
+}
+
+/* -------------------- Exported Functions -------------------- */
+
+func (widget *MultiSourceWidget) CurrentSource() string {
+	return widget.Sources[widget.Idx]
+}
+
+func (widget *MultiSourceWidget) LoadSources(module, singular, plural string) {
+	var empty []interface{}
+
+	s := fmt.Sprintf("wtf.mods.%s.%s", module, singular)
+	p := fmt.Sprintf("wtf.mods.%s.%s", module, plural)
+
+	single := Config.UString(s, "")
+	multiple := Config.UList(p, empty)
+
+	asStrs := ToStrs(multiple)
+
+	if single != "" {
+		asStrs = append(asStrs, single)
+	}
+
+	widget.Sources = asStrs
+}