[fix] Specify svg namespace if {@html} is used in svg (#7464)

* add test

* create svg element if {@html} tag is inside of svg

* always use claim_html_tag

src/compiler/compile/render_dom/wrappers/RawMustacheTag.ts

@@ -1,8 +1,10 @@
+import { namespaces } from './../../../utils/namespaces';
 import { b, x } from 'code-red';
 import Renderer from '../Renderer';
 import Block from '../Block';
 import Tag from './shared/Tag';
 import Wrapper from './shared/Wrapper';
+import Element from '../../nodes/Element';
 import MustacheTag from '../../nodes/MustacheTag';
 import RawMustacheTag from '../../nodes/RawMustacheTag';
 import { is_head } from './shared/is_head';
@@ -51,9 +53,12 @@ export default class RawMustacheTagWrapper extends Tag {
 
 			const update_anchor = needs_anchor ? html_anchor : this.next ? this.next.var : 'null';
 
-			block.chunks.create.push(b`${html_tag} = new @HtmlTag();`);
+			const parent_element = this.node.find_nearest(/^Element/) as Element;
+			const is_svg = parent_element && parent_element.namespace === namespaces.svg;
+			block.chunks.create.push(b`${html_tag} = new @HtmlTag(${is_svg ? 'true' : 'false'});`);
+
 			if (this.renderer.options.hydratable) {
-				block.chunks.claim.push(b`${html_tag} = @claim_html_tag(${_parent_nodes});`);
+				block.chunks.claim.push(b`${html_tag} = @claim_html_tag(${_parent_nodes}, ${is_svg ? 'true' : 'false'});`);
 			}
 			block.chunks.hydrate.push(b`${html_tag}.a = ${update_anchor};`);
 			block.chunks.mount.push(b`${html_tag}.m(${init}, ${parent_node || '#target'}, ${parent_node ? null : '#anchor'});`);

src/runtime/internal/dom.ts

@@ -492,12 +492,13 @@ function find_comment(nodes, text, start) {
 	return nodes.length;
 }
 
-export function claim_html_tag(nodes) {
+
+export function claim_html_tag(nodes, is_svg: boolean) {
 	// find html opening tag
 	const start_index = find_comment(nodes, 'HTML_TAG_START', 0);
 	const end_index = find_comment(nodes, 'HTML_TAG_END', start_index);
 	if (start_index === end_index) {
-		return new HtmlTagHydration();
+		return new HtmlTagHydration(undefined, is_svg);
 	}
 
 	init_claim_info(nodes);
@@ -509,7 +510,7 @@ export function claim_html_tag(nodes) {
 		n.claim_order = nodes.claim_info.total_claimed;
 		nodes.claim_info.total_claimed += 1;
 	}
-	return new HtmlTagHydration(claimed_nodes);
+	return new HtmlTagHydration(claimed_nodes, is_svg);
 }
 
 export function set_data(text, data) {
@@ -645,16 +646,18 @@ export function query_selector_all(selector: string, parent: HTMLElement = docum
 }
 
 export class HtmlTag {
+	private is_svg = false;
 	// parent for creating node
-	e: HTMLElement;
+	e: HTMLElement | SVGElement;
 	// html tag nodes
 	n: ChildNode[];
 	// target
-	t: HTMLElement;
+	t: HTMLElement | SVGElement;
 	// anchor
-	a: HTMLElement;
+	a: HTMLElement | SVGElement;
 
-	constructor() {
+	constructor(is_svg: boolean = false) {
+		this.is_svg = is_svg;
 		this.e = this.n = null;
 	}
 
@@ -662,9 +665,14 @@ export class HtmlTag {
 		this.h(html);
 	}
 
-	m(html: string, target: HTMLElement, anchor: HTMLElement = null) {
+	m(
+		html: string,
+		target: HTMLElement | SVGElement,
+		anchor: HTMLElement | SVGElement = null
+	) {
 		if (!this.e) {
-			this.e = element(target.nodeName as keyof HTMLElementTagNameMap);
+			if (this.is_svg) this.e = svg_element(target.nodeName as keyof SVGElementTagNameMap);
+			else this.e = element(target.nodeName as keyof HTMLElementTagNameMap);
 			this.t = target;
 			this.c(html);
 		}
@@ -698,8 +706,8 @@ export class HtmlTagHydration extends HtmlTag {
 	// hydration claimed nodes
 	l: ChildNode[] | void;
 
-	constructor(claimed_nodes?: ChildNode[]) {
+	constructor(claimed_nodes?: ChildNode[], is_svg: boolean = false) {
-		super();
+		super(is_svg);
 		this.e = this.n = null;
 		this.l = claimed_nodes;
 	}

test/js/samples/each-block-changed-check/expected.js

@@ -52,7 +52,7 @@ function create_each_block(ctx) {
 			t4 = text(t4_value);
 			t5 = text(" ago:");
 			t6 = space();
-			html_tag = new HtmlTag();
+			html_tag = new HtmlTag(false);
 			attr(span, "class", "meta");
 			html_tag.a = null;
 			attr(div, "class", "comment");
@@ -170,4 +170,4 @@ class Component extends SvelteComponent {
 	}
 }
 
-export default Component;
+export default Component;

test/runtime/samples/svg-html-tag/_config.js

@@ -0,0 +1,35 @@
+export default {
+	html: `
+			<svg width="100" height="60">
+				<circle cx="25" cy="30" r="24" fill="#FFD166"></circle>
+				<circle cx="75" cy="30" r="24" fill="#118AB2"></circle>
+			</svg>
+		`,
+	test({ assert, target, component }) {
+
+		let svg = target.querySelector('svg');
+		let circles = target.querySelectorAll('circle');
+		assert.equal(svg.namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(2, circles.length);
+		assert.equal(circles[0].namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(circles[1].namespaceURI, 'http://www.w3.org/2000/svg');
+
+		component.width = 200;
+		component.height = 120;
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+			<svg width="200" height="120">
+				<circle cx="50" cy="60" r="24" fill="#FFD166"></circle>
+				<circle cx="150" cy="60" r="24" fill="#118AB2"></circle>
+			</svg>
+		`
+		);
+		svg = target.querySelector('svg');
+		circles = target.querySelectorAll('circle');
+		assert.equal(svg.namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(2, circles.length);
+		assert.equal(circles[0].namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(circles[1].namespaceURI, 'http://www.w3.org/2000/svg');
+	}
+};

test/runtime/samples/svg-html-tag/main.svelte

@@ -0,0 +1,10 @@
+<script>
+	export let width = 100
+	export let height = 60
+	$: circle = `<circle cx="${width/4}" cy="${height/2}" r="24" fill="#FFD166"/>`
+</script>
+
+<svg width="{width}" height="{height}">
+  {@html circle}
+  <circle cx="{width/4*3}" cy="{height/2}" r="24" fill="#118AB2"/>
+</svg>

test/runtime/samples/svg-html-tag2/_config.js

@@ -0,0 +1,39 @@
+export default {
+	html: `
+			<svg width="100" height="60">
+				<rect>
+					<circle cx="25" cy="30" r="24" fill="#FFD166"></circle>
+					<circle cx="75" cy="30" r="24" fill="#118AB2"></circle>
+				</rect>
+			</svg>
+		`,
+	test({ assert, target, component }) {
+
+		let svg = target.querySelector('svg');
+		let circles = target.querySelectorAll('circle');
+		assert.equal(svg.namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(2, circles.length);
+		assert.equal(circles[0].namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(circles[1].namespaceURI, 'http://www.w3.org/2000/svg');
+
+		component.width = 200;
+		component.height = 120;
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+			<svg width="200" height="120">
+				<rect>
+					<circle cx="50" cy="60" r="24" fill="#FFD166"></circle>
+					<circle cx="150" cy="60" r="24" fill="#118AB2"></circle>
+				</rect>
+			</svg>
+		`
+		);
+		svg = target.querySelector('svg');
+		circles = target.querySelectorAll('circle');
+		assert.equal(svg.namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(2, circles.length);
+		assert.equal(circles[0].namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(circles[1].namespaceURI, 'http://www.w3.org/2000/svg');
+	}
+};

test/runtime/samples/svg-html-tag2/main.svelte

@@ -0,0 +1,12 @@
+<script>
+	export let width = 100
+	export let height = 60
+	$: circle = `<circle cx="${width/4}" cy="${height/2}" r="24" fill="#FFD166"/>`
+</script>
+
+<svg width="{width}" height="{height}">
+	<rect>
+		{@html circle}
+		<circle cx="{width/4*3}" cy="{height/2}" r="24" fill="#118AB2"/>
+	</rect>
+</svg>

test/runtime/samples/svg-html-tag3/_config.js

@@ -0,0 +1,33 @@
+export default {
+	html: `
+			<svg>
+			  <foreignObject>
+				  <circle cx="25" cy="30" r="24" fill="#FFD166"></circle>
+				</foreignObject>
+			</svg>
+		`,
+	test({ assert, target, component }) {
+
+		let svg = target.querySelector('svg');
+		let circle = target.querySelector('circle');
+		assert.equal(svg.namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(circle.namespaceURI, 'http://www.w3.org/1999/xhtml');
+
+		component.width = 200;
+		component.height = 120;
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+			<svg>
+			  <foreignObject>
+				  <circle cx="50" cy="60" r="24" fill="#FFD166"></circle>
+				</foreignObject>
+			</svg>
+		`
+		);
+		svg = target.querySelector('svg');
+		circle = target.querySelector('circle');
+		assert.equal(svg.namespaceURI, 'http://www.w3.org/2000/svg');
+		assert.equal(circle.namespaceURI, 'http://www.w3.org/1999/xhtml');
+	}
+};

test/runtime/samples/svg-html-tag3/main.svelte

@@ -0,0 +1,11 @@
+<script>
+	export let width = 100
+	export let height = 60
+	$: circle = `<circle cx="${width/4}" cy="${height/2}" r="24" fill="#FFD166"/>`
+</script>
+
+<svg>
+	<foreignObject>
+		{@html circle}
+	</foreignObject>
+</svg>