dom: Implement SetInnerHTML

stroiman · stroiman · commit effaeedff166 · 2025-04-09T09:32:31.000+02:00
diff --git a/dom/element.go b/dom/element.go
@@ -35,6 +35,7 @@ type Element interface {
 	InsertAdjacentHTML(position string, text string) error
 	OuterHTML() string
 	InnerHTML() string
+	SetInnerHTML(string) error
 	TagName() string
 	Matches(string) (bool, error)
 	// unexported
@@ -112,6 +113,14 @@ func (e *element) InnerHTML() string {
 	return writer.String()
 }
 
+func (e *element) SetInnerHTML(html string) error {
+	fragment, err := e.nodeDocument().parseFragment(strings.NewReader(html))
+	if err == nil {
+		err = e.ReplaceChildren(fragment)
+	}
+	return err
+}
+
 func (e *element) HasAttribute(name string) bool {
 	for _, a := range e.attributes {
 		if a.Name() == name {
diff --git a/dom/element_test.go b/dom/element_test.go
@@ -288,6 +288,14 @@ func TestElementOuterHTML(t *testing.T) {
   </div>`))
 }
 
+func TestSetElementInnerHTML(t *testing.T) {
+	doc := ParseHtmlString(`<body>body text</body>`)
+	doc.Body().SetInnerHTML(`<div id="1">Foo</div>Bar<div id="2">Baz</div>`)
+	gomega.NewWithT(t).
+		Expect(doc.Body().InnerHTML()).
+		To(Equal(`<div id="1">Foo</div>Bar<div id="2">Baz</div>`))
+}
+
 // ParentElementTestSuite describes functionality in the ParentNode IDL
 // interface mixin, which is used by both Element, Document, and
 // DocumentFragment.
