Move generic checklist code into its own package

todo/display.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 
 	"github.com/rivo/tview"
+	"github.com/senorprogrammer/wtf/checklist"
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
@@ -11,7 +12,7 @@ const checkWidth = 4
 
 func (widget *Widget) display() {
 	str := ""
-	newList := wtf.NewChecklist()
+	newList := checklist.NewChecklist()
 
 	for _, item := range widget.list.UncheckedItems() {
 		str = str + widget.formattedItemLine(item, widget.list.SelectedItem(), widget.list.LongestLine())
@@ -30,7 +31,7 @@ func (widget *Widget) display() {
 	widget.View.SetText(str)
 }
 
-func (widget *Widget) formattedItemLine(item *wtf.ChecklistItem, selectedItem *wtf.ChecklistItem, maxLen int) string {
+func (widget *Widget) formattedItemLine(item *checklist.ChecklistItem, selectedItem *checklist.ChecklistItem, maxLen int) string {
 	foreColor, backColor := "white", wtf.Config.UString("wtf.colors.background", "black")
 
 	if item.Checked {

todo/widget.go

@@ -7,6 +7,7 @@ import (
 	"github.com/gdamore/tcell"
 	"github.com/rivo/tview"
 	"github.com/senorprogrammer/wtf/cfg"
+	"github.com/senorprogrammer/wtf/checklist"
 	"github.com/senorprogrammer/wtf/wtf"
 	"gopkg.in/yaml.v2"
 )
@@ -39,7 +40,7 @@ type Widget struct {
 
 	app      *tview.Application
 	filePath string
-	list     wtf.Checklist
+	list     checklist.Checklist
 	pages    *tview.Pages
 }
 
@@ -49,7 +50,7 @@ func NewWidget(app *tview.Application, pages *tview.Pages) *Widget {
 
 		app:      app,
 		filePath: wtf.Config.UString("wtf.mods.todo.filename"),
-		list:     wtf.NewChecklist(),
+		list:     checklist.NewChecklist(),
 		pages:    pages,
 	}
 
@@ -67,7 +68,7 @@ func (widget *Widget) Refresh() {
 	widget.display()
 }
 
-func (widget *Widget) SetList(newList wtf.Checklist) {
+func (widget *Widget) SetList(newList checklist.Checklist) {
 	widget.list = newList
 }