Allow ticking and unticking checkboxes

internal/conf/templates/list.tmpl.html

@@ -3,7 +3,7 @@
     <div class="list-group list-group-flush">
     {{range $note := .notes}}
         <a class="list-group-item list-group-item-action d-flex justify-content-between"
-           href="{{$note.Url}}/">
+           href="{{$note.URL}}/">
             <span>{{$note.Title}}</span>
             <img src="/static/icons/eye.svg" alt="Edit">
         </a>

internal/notes/notes.go

@@ -1,10 +1,11 @@
-// Notes implements a data structure for reasoning about and rendering
+// Package notes implements a data structure for reasoning about and rendering
 // markdown notes
 package notes
 
 import (
 	"bytes"
 	"encoding/base64"
+	"errors"
 	"fmt"
 	"html/template"
 	"log"
@@ -102,47 +103,37 @@ func (t *toggleCheckboxTransformer) Transform(node *ast.Document, reader text.Re
 	})
 }
 
-func (r *markdown.Renderer) renderTaskCheckBox(node ast.Node, entering bool) ast.WalkStatus {
-	if entering {
-		var itemPrefix []byte
-		l := r.rc.lists[len(r.rc.lists)-1]
-
-		if l.list.IsOrdered() {
-			itemPrefix = append(itemPrefix, []byte(fmt.Sprint(l.num))...)
-			r.rc.lists[len(r.rc.lists)-1].num += 1
-		}
-		itemPrefix = append(itemPrefix, l.list.Marker, ' ')
-		// Prefix the current line with the item prefix
-		r.rc.writer.PushPrefix(itemPrefix, 0, 0)
-		// Prefix subsequent lines with padding the same length as the item prefix
-		indentLen := int(max(r.config.NestedListLength, NestedListLengthMinimum))
-		indent := bytes.Repeat([]byte{' '}, indentLen)
-		r.rc.writer.PushPrefix(bytes.Repeat(indent, len(itemPrefix)), 1)
-	} else {
-		r.rc.writer.PopPrefix()
-		r.rc.writer.PopPrefix()
+func renderTaskCheckBox(writer util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) {
+	var err error
+	var _ int
+	n, ok := node.(*astext.TaskCheckBox)
+	if !ok {
+		return ast.WalkContinue, errors.New("not a TaskCheckBox")
 	}
-	return ast.WalkContinue
+	if entering {
+		// Render a box if necessary
+		if n.IsChecked {
+			_, err = writer.Write([]byte("[x] "))
+		} else {
+			_, err = writer.Write([]byte("[ ] "))
+		}
+	}
+	return ast.WalkContinue, err
 }
 
 func (n *Note) ToggleBox(nthBox int) {
-	log.Printf("Toggling %dth box", nthBox)
-
 	checkboxTransformer := toggleCheckboxTransformer{nthBox: nthBox}
 	transformer := util.Prioritized(&checkboxTransformer, 0)
 
 	renderer := markdown.NewRenderer()
-	renderer.Register(astext.KindTaskCheckBox, func(writer util.BufWriter, source []byte, n ast.Node, entering bool) (ast.WalkStatus, error) {
-	})
+	renderer.Register(astext.KindTaskCheckBox, renderTaskCheckBox)
 
 	var buf bytes.Buffer
-	md := goldmark.New(
-		goldmark.WithExtensions(
-			extension.TaskList,
-		),
-		goldmark.WithRenderer(markdown.NewRenderer()),
-		goldmark.WithParserOptions(parser.WithASTTransformers(transformer)),
-	)
+	md := goldmark.New(goldmark.WithRenderer(renderer))
+
+	md.Parser().AddOptions(parser.WithInlineParsers(
+		util.Prioritized(extension.NewTaskCheckBoxParser(), 0),
+	), parser.WithASTTransformers(transformer))
 
 	md.Convert(n.Body, &buf)
 	n.Body = buf.Bytes()