405 lines
16 KiB
HTML
405 lines
16 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>Declarative Shadow DOM</title>
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<link rel="author" href="mailto:masonf@chromium.org">
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<link rel="help" href="https://github.com/whatwg/dom/issues/831">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="host" style="display:none">
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<template shadowrootmode="open">
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<slot id="s1" name="slot1"></slot>
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</template>
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<div id="c1" slot="slot1"></div>
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</div>
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<script>
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// Uncaught exceptions (which will manifest as test harness
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// errors) constitute a failure of this test. No parsing
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// operations, whether imperative (setHTMLUnsafe) or declarative
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// (main document parsing) should ever throw exceptions.
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// More context:
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// https://github.com/whatwg/html/issues/10527#issuecomment-2275253439
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test(() => {
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const host = document.querySelector('#host');
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const c1 = host.querySelector('#c1');
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assert_true(!!c1);
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assert_equals(host.querySelector('#s1'), null, "Should be inside shadow root");
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assert_equals(host.querySelector('template'), null, "No leftover template node");
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assert_true(!!host.shadowRoot,"No shadow root found");
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const s1 = host.shadowRoot.querySelector('#s1');
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assert_equals(c1.assignedSlot, s1);
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assert_array_equals(s1.assignedNodes(), [c1]);
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}, 'Declarative Shadow DOM: Basic test');
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test(() => {
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assert_true(HTMLTemplateElement.prototype.hasOwnProperty("shadowRootMode"),'Unable to feature detect');
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}, 'Declarative Shadow DOM: Feature detection');
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test(() => {
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const t = document.createElement('template');
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t.setAttribute('shadowrootmode','open');
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assert_equals(t.shadowRootMode,'open','The shadowRootMode IDL should reflect the content attribute');
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t.setAttribute('shadowrootmode','closed');
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assert_equals(t.shadowRootMode,'closed','"open" and "closed" should both be valid values');
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t.setAttribute('shadowrootmode','OpEn');
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assert_equals(t.shadowRootMode,'open','Case insensitive');
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t.setAttribute('shadowrootmode','INVALID');
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assert_equals(t.shadowRootMode,'','Invalid values map to empty string');
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t.removeAttribute('shadowrootmode');
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assert_equals(t.shadowRootMode,'','No shadowrootmode attribute maps to empty string');
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}, 'Shadowrootmode reflection');
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test(() => {
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const t = document.createElement('template');
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t.shadowRootMode = 'blah';
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assert_equals(t.shadowRootMode, '');
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t.getAttribute('shadowrootmode', 'blah');
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t.shadowRootMode = 'CLOSED';
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assert_equals(t.shadowRootMode, 'closed');
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t.getAttribute('shadowrootmode', 'CLOSED');
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}, 'Shadowrootmode reflection, setter');
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test(() => {
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const t = document.createElement('template');
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t.setAttribute('shadowrootdelegatesfocus','');
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assert_equals(t.shadowRootDelegatesFocus,true,'The shadowRootDelegatesFocus IDL should reflect the content attribute');
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t.setAttribute('shadowrootdelegatesfocus','foobar');
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assert_equals(t.shadowRootDelegatesFocus,true,'The value doesn\'t matter');
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t.removeAttribute('shadowrootdelegatesfocus');
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assert_equals(t.shadowRootDelegatesFocus,false,'No shadowRootDelegatesFocus attribute maps to false');
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}, 'Shadowrootdelegatesfocus reflection');
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test(() => {
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const t = document.createElement('template');
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assert_equals(t.getAttribute('shadowrootdelegatesfocus'), null);
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t.shadowRootDelegatesFocus = true;
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assert_equals(t.getAttribute('shadowrootdelegatesfocus'), '');
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assert_equals(t.shadowRootDelegatesFocus, true);
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t.shadowRootDelegatesFocus = false;
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assert_equals(t.getAttribute('shadowrootdelegatesfocus'), null);
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assert_equals(t.shadowRootDelegatesFocus, false);
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}, 'Shadowrootdelegatesfocus reflection, setter');
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test(() => {
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const t = document.createElement('template');
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t.setAttribute('shadowrootclonable','');
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assert_equals(t.shadowRootClonable,true,'The shadowRootClonable IDL should reflect the content attribute');
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t.setAttribute('shadowrootclonable','foobar');
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assert_equals(t.shadowRootClonable,true,'The value doesn\'t matter');
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t.removeAttribute('shadowrootclonable');
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assert_equals(t.shadowRootClonable,false,'No shadowRootClonable attribute maps to false');
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}, 'Shadowrootclonable reflection');
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test(() => {
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const t = document.createElement('template');
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assert_equals(t.getAttribute('shadowrootclonable'), null);
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t.shadowRootClonable = true;
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assert_equals(t.getAttribute('shadowrootclonable'), '');
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assert_equals(t.shadowRootClonable, true);
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t.shadowRootClonable = false;
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assert_equals(t.getAttribute('shadowrootclonable'), null);
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assert_equals(t.shadowRootClonable, false);
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}, 'Shadowrootclonable reflection, setter');
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test(() => {
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const div = document.createElement('div');
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div.setHTMLUnsafe(`
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<div id="host">
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<template shadowrootmode="open">
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<slot id="s1" name="slot1"></slot>
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</template>
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<div id="c1" slot="slot1"></div>
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</div>
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`);
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const host = div.querySelector('#host');
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const c1 = host.querySelector('#c1');
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assert_true(!!c1);
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assert_equals(host.querySelector('#s1'), null, "Should be inside shadow root");
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assert_equals(host.querySelector('template'), null, "No leftover template node");
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assert_true(!!host.shadowRoot,"No shadow root found");
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const s1 = host.shadowRoot.querySelector('#s1');
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assert_equals(c1.assignedSlot, s1);
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assert_array_equals(s1.assignedNodes(), [c1]);
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}, 'Declarative Shadow DOM: Fragment parser basic test');
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test(() => {
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const div = document.createElement('div');
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div.setHTMLUnsafe(`
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<div id="host">
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<template shadowrootmode="invalid">
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</template>
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</div>
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`);
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const host = div.querySelector('#host');
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assert_equals(host.shadowRoot, null, "Shadow root was found");
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const tmpl = host.querySelector('template');
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assert_true(!!tmpl,"Template should still be present");
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const shadowrootAttr = tmpl.getAttribute('shadowrootmode');
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assert_equals(shadowrootAttr,"invalid","'shadowrootmode' attribute should still be present");
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}, 'Declarative Shadow DOM: Invalid shadow root attribute');
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test(() => {
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const div = document.createElement('div');
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div.setHTMLUnsafe(`
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<div id="host">
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<template shadowrootmode="closed">
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</template>
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</div>
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`);
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const host = div.querySelector('#host');
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assert_equals(host.shadowRoot, null, "Closed shadow root");
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assert_equals(host.querySelector('template'), null, "No template - converted to shadow root");
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}, 'Declarative Shadow DOM: Closed shadow root attribute');
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test(() => {
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const div = document.createElement('div');
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div.setHTMLUnsafe(`
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<div id="host">
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<template shadowrootmode="open">
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<slot id="s1" name="slot1"></slot>
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</div>
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`);
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const host = div.querySelector('#host');
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assert_equals(host.querySelector('#s1'), null, "Should be inside shadow root");
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assert_equals(host.querySelector('template'), null, "No leftover template node");
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assert_true(!!host.shadowRoot,"No shadow root found");
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const s1 = host.shadowRoot.querySelector('#s1');
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assert_true(!!s1,"Slot should be inside the shadow root");
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}, 'Declarative Shadow DOM: Missing closing tag');
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test(() => {
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const div = document.createElement('div');
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div.setHTMLUnsafe(`
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<div id="host">
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<template shadowrootmode="open" shadowrootdelegatesfocus>
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</template>
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</div>
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`);
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var host = div.querySelector('#host');
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assert_true(!!host.shadowRoot,"No shadow root found");
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assert_true(host.shadowRoot.delegatesFocus,"delegatesFocus should be true");
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div.setHTMLUnsafe(`
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<div id="host">
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<template shadowrootmode="open">
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</template>
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</div>
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`);
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host = div.querySelector('#host');
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assert_true(!!host.shadowRoot,"No shadow root found");
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assert_false(host.shadowRoot.delegatesFocus,"delegatesFocus should be false without the shadowrootdelegatesfocus attribute");
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}, 'Declarative Shadow DOM: delegates focus attribute');
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test(() => {
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const div = document.createElement('div');
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div.setHTMLUnsafe(`
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<div id="host">
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<template shadowrootmode="open" shadowrootclonable>
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</template>
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</div>
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`);
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var host = div.querySelector('#host');
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assert_true(!!host.shadowRoot,"No shadow root found");
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assert_true(host.shadowRoot.clonable,"clonable should be true");
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div.setHTMLUnsafe(`
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<div id="host">
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<template shadowrootmode="open">
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</template>
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</div>
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`);
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host = div.querySelector('#host');
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assert_true(!!host.shadowRoot,"No shadow root found");
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assert_false(host.shadowRoot.clonable,"clonable should be false without the shadowrootclonable attribute");
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}, 'Declarative Shadow DOM: clonable attribute');
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</script>
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<div id="multi-host" style="display:none">
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<template shadowrootmode="open">
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<span>root 1</span>
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</template>
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<template shadowrootmode="closed">
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<span>root 2</span>
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</template>
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</div>
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<script>
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test(() => {
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const host = document.querySelector('#multi-host');
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const leftover = host.querySelector('template');
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assert_true(!!leftover, "The second (duplicate) template should be left in the DOM");
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assert_true(leftover instanceof HTMLTemplateElement);
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assert_equals(leftover.getAttribute('shadowrootmode'),"closed");
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assert_equals(leftover.shadowRootMode,"closed");
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assert_true(!!host.shadowRoot,"No open shadow root found - first root should remain");
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const innerSpan = host.shadowRoot.querySelector('span');
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assert_equals(innerSpan.textContent, 'root 1', "Content should come from first declarative shadow root");
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}, 'Declarative Shadow DOM: Multiple roots');
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</script>
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<template id="template-containing-shadow">
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<div class="innerdiv">
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<template shadowrootmode=open shadowrootclonable>Content</template>
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</div>
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</template>
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<script>
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test(() => {
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const template = document.querySelector('#template-containing-shadow');
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const container1 = document.createElement('div');
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container1.style.display = 'none';
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document.body.appendChild(container1);
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container1.appendChild(template.content.cloneNode(true));
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let innerDiv = container1.querySelector('div.innerdiv');
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const shadowRoot1 = innerDiv.shadowRoot;
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assert_true(!!shadowRoot1,"Inner div should have a shadow root");
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assert_equals(innerDiv.querySelector('template'), null, "No leftover template node");
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const container2 = document.createElement('div');
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container2.style.display = 'none';
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document.body.appendChild(container2);
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container2.appendChild(template.content.cloneNode(true));
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innerDiv = container2.querySelector('div.innerdiv');
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const shadowRoot2 = innerDiv.shadowRoot;
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assert_true(!!shadowRoot2,"Inner div should have a shadow root");
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assert_equals(innerDiv.querySelector('template'), null, "No leftover template node");
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assert_not_equals(shadowRoot1,shadowRoot2,'Should not get back the same shadow root');
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// Make sure importNode also works.
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const container3 = document.createElement('div');
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container3.style.display = 'none';
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document.body.appendChild(container3);
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container3.appendChild(document.importNode(template.content,true));
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innerDiv = container3.querySelector('div.innerdiv');
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const shadowRoot3 = innerDiv.shadowRoot;
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assert_true(!!shadowRoot3,"Inner div should have a shadow root");
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assert_equals(innerDiv.querySelector('template'), null, "No leftover template node");
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assert_not_equals(shadowRoot1,shadowRoot3,'Should not get back the same shadow root');
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}, 'Declarative Shadow DOM: template containing declarative shadow root (with shadowrootclonable)');
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</script>
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<template id="template-containing-deep-shadow">
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<div><div><div><div><div>
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<div class="innerdiv">
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<template shadowrootmode=open shadowrootclonable>Content</template>
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</div>
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</div></div></div></div></div>
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</template>
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<script>
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test(() => {
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const template = document.querySelector('#template-containing-deep-shadow');
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const host = document.createElement('div');
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host.style.display = 'none';
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document.body.appendChild(host);
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host.appendChild(template.content.cloneNode(true));
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assert_true(!!host.querySelector('div.innerdiv').shadowRoot,"Inner div should have a shadow root");
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}, 'Declarative Shadow DOM: template containing (deeply nested) declarative shadow root');
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</script>
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<template id="template-containing-template">
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<div>
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<template id="inner-template">
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<div class="innerdiv">
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<template shadowrootmode=open shadowrootclonable>Content</template>
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</div>
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</template>
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</div>
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</template>
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<script>
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test(() => {
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const template = document.querySelector('#template-containing-template');
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const host = document.createElement('div');
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host.style.display = 'none';
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document.body.appendChild(host);
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host.appendChild(template.content.cloneNode(true));
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const innerTemplate = host.querySelector('#inner-template');
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assert_true(!!innerTemplate.content.querySelector('div.innerdiv').shadowRoot,"Inner div should have a shadow root");
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}, 'Declarative Shadow DOM: template containing a template containing declarative shadow root');
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</script>
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<template id="template-containing-ua-shadow">
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<div class="innerdiv">
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<template shadowrootmode=open shadowrootclonable>
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<video></video> <!--Assumed to have UA shadow root-->
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</template>
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</div>
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</template>
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<script>
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test(() => {
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const template = document.querySelector('#template-containing-ua-shadow');
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const host = document.createElement('div');
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host.style.display = 'none';
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document.body.appendChild(host);
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// Mostly make sure clone of template *does* clone the
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// shadow root, and doesn't crash on cloning the <video>.
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host.appendChild(template.content.cloneNode(true));
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let innerDiv = host.querySelector('div.innerdiv');
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const shadowRoot = innerDiv.shadowRoot;
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assert_true(!!shadowRoot,"Inner div should have a shadow root");
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assert_equals(innerDiv.querySelector('template'), null, "No leftover template node");
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assert_true(!!innerDiv.shadowRoot.querySelector('video'),'Video element should be present');
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}, 'Declarative Shadow DOM: template containing declarative shadow root and UA shadow root');
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</script>
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<template id="template-containing-ua-shadow-closed">
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<div class="innerdiv">
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<template shadowrootmode=closed>
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<video></video> <!--Assumed to have UA shadow root-->
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</template>
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</div>
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</template>
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<script>
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test(() => {
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const template = document.querySelector('#template-containing-ua-shadow-closed');
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const host = document.createElement('div');
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host.style.display = 'none';
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document.body.appendChild(host);
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host.appendChild(template.content.cloneNode(true));
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let innerDiv = host.querySelector('div.innerdiv');
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assert_true(!innerDiv.shadowRoot,"Inner div should have a closed shadow root");
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}, 'Declarative Shadow DOM: template containing closed declarative shadow root and UA shadow root');
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</script>
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<template id="root-element-shadow">
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<template shadowrootmode=open>Content</template>
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</template>
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<script>
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test(() => {
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// Root element of this template is a <template shadowroot>:
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const template = document.querySelector('#root-element-shadow');
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const host = document.createElement('div');
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host.appendChild(template.content.cloneNode(true));
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assert_equals(host.shadowRoot, null, "Shadow root should not be present");
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const tmpl = host.querySelector('template');
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assert_true(!!tmpl,"Template should still be present");
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assert_equals(tmpl.getAttribute('shadowrootmode'),"open","'shadowrootmode' attribute should still be present");
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}, 'Declarative Shadow DOM: declarative shadow roots are not supported by the template element');
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</script>
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<script>
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let gotError = false;
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window.addEventListener('error',() => {gotError = true;});
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</script>
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<progress id="invalid-element-exception">
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<template shadowrootmode=open>Content</template>
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</progress>
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<script>
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test(() => {
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assert_false(gotError,'Exceptions should not be thrown by the parser');
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const host = document.querySelector('#invalid-element-exception');
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const leftover = host.querySelector('template');
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assert_true(!host.shadowRoot,"Progress elements don't allow shadow roots");
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assert_true(!!leftover, "The template should be left in the DOM");
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// This also should not throw exceptions:
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const div = document.createElement('div');
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document.body.appendChild(div);
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div.setHTMLUnsafe('<progress><template shadowrootmode=open></template></progress>');
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assert_false(gotError,'Exceptions should not be thrown by the parser');
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assert_true(!!div.querySelector('template'),'parsing should have succeeded and left the template child');
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host.remove();
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div.remove();
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}, 'Declarative Shadow DOM: explicit test that exceptions are not thrown');
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</script>
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