diff options
Diffstat (limited to 'components/script/dom/create.rs')
| -rw-r--r-- | components/script/dom/create.rs | 96 |
1 files changed, 65 insertions, 31 deletions
diff --git a/components/script/dom/create.rs b/components/script/dom/create.rs index 65601c0f30b..5a9377985e4 100644 --- a/components/script/dom/create.rs +++ b/components/script/dom/create.rs @@ -134,46 +134,70 @@ fn create_html_element( ) -> DomRoot<Element> { assert_eq!(name.ns, ns!(html)); - // Step 4 + // Step 2. Let definition be the result of looking up a custom element + // definition given document, namespace, localName, and is. let definition = document.lookup_custom_element_definition(&name.ns, &name.local, is.as_ref()); + // Step 3. If definition is non-null... if let Some(definition) = definition { - if definition.is_autonomous() { + // ...and definition’s name is not equal to its local name + // (i.e., definition represents a customized built-in element): + if !definition.is_autonomous() { + // Step 3.1. Let interface be the element interface for localName and the HTML namespace. + // Step 3.2. Set result to a new element that implements interface, with no attributes, + // namespace set to the HTML namespace, namespace prefix set to prefix, + // local name set to localName, custom element state set to "undefined", + // custom element definition set to null, is value set to is, + // and node document set to document. + let element = create_native_html_element(name, prefix, document, creator, proto); + element.set_is(definition.name.clone()); + element.set_custom_element_state(CustomElementState::Undefined); match mode { + // Step 3.3. If synchronousCustomElements is true, then run this step while catching any exceptions: + CustomElementCreationMode::Synchronous => { + // Step 3.3.1. Upgrade result using definition. + upgrade_element(definition, &element, can_gc); + // TODO: "If this step threw an exception exception:" steps. + }, + // Step 3.4. Otherwise, enqueue a custom element upgrade reaction given result and definition. CustomElementCreationMode::Asynchronous => { - let result = DomRoot::upcast::<Element>(HTMLElement::new( - name.local.clone(), - prefix.clone(), - document, - proto, - can_gc, - )); - result.set_custom_element_state(CustomElementState::Undefined); - ScriptThread::enqueue_upgrade_reaction(&result, definition); - return result; + ScriptThread::enqueue_upgrade_reaction(&element, definition) }, + } + return element; + } else { + // Step 4. Otherwise, if definition is non-null: + match mode { + // Step 4.1. If synchronousCustomElements is true, then run these + // steps while catching any exceptions: CustomElementCreationMode::Synchronous => { let local_name = name.local.clone(); //TODO(jdm) Pass proto to create_element? + // Steps 4.1.1-4.1.11 return match definition.create_element(document, prefix.clone(), can_gc) { Ok(element) => { element.set_custom_element_definition(definition.clone()); element }, Err(error) => { - // Step 6. Recovering from exception. + // If any of these steps threw an exception exception: let global = GlobalScope::current().unwrap_or_else(|| document.global()); let cx = GlobalScope::get_cx(); - // Step 6.1.1 + // Substep 1. Report exception for definition’s constructor’s corresponding + // JavaScript object’s associated realm’s global object. unsafe { let ar = enter_realm(&*global); throw_dom_exception(cx, &global, error); report_pending_exception(*cx, true, InRealm::Entered(&ar), can_gc); } - // Step 6.1.2 + // Substep 2. Set result to a new element that implements the HTMLUnknownElement interface, + // with no attributes, namespace set to the HTML namespace, namespace prefix set to prefix, + // local name set to localName, custom element state set to "failed", + // custom element definition set to null, is value set to null, + // and node document set to document. let element = DomRoot::upcast::<Element>(HTMLUnknownElement::new( local_name, prefix, document, proto, can_gc, )); @@ -182,28 +206,38 @@ fn create_html_element( }, }; }, - } - } else { - // Steps 5.1-5.2 - let element = create_native_html_element(name, prefix, document, creator, proto); - element.set_is(definition.name.clone()); - element.set_custom_element_state(CustomElementState::Undefined); - match mode { - // Step 5.3 - CustomElementCreationMode::Synchronous => { - upgrade_element(definition, &element, can_gc) - }, - // Step 5.4 + // Step 4.2. Otherwise: CustomElementCreationMode::Asynchronous => { - ScriptThread::enqueue_upgrade_reaction(&element, definition) + // Step 4.2.1. Set result to a new element that implements the HTMLElement interface, + // with no attributes, namespace set to the HTML namespace, namespace prefix set to + // prefix, local name set to localName, custom element state set to "undefined", + // custom element definition set to null, is value set to null, and node document + // set to document. + let result = DomRoot::upcast::<Element>(HTMLElement::new( + name.local.clone(), + prefix.clone(), + document, + proto, + can_gc, + )); + result.set_custom_element_state(CustomElementState::Undefined); + // Step 4.2.2. Enqueue a custom element upgrade reaction given result and definition. + ScriptThread::enqueue_upgrade_reaction(&result, definition); + return result; }, } - return element; } } - // Steps 7.1-7.3 + // Step 5. Otherwise: + // Step 5.1. Let interface be the element interface for localName and namespace. + // Step 5.2. Set result to a new element that implements interface, with no attributes, + // namespace set to namespace, namespace prefix set to prefix, local name set to localName, + // custom element state set to "uncustomized", custom element definition set to null, + // is value set to is, and node document set to document. let result = create_native_html_element(name.clone(), prefix, document, creator, proto); + // Step 5.3. If namespace is the HTML namespace, and either localName is a valid custom element name or + // is is non-null, then set result’s custom element state to "undefined". match is { Some(is) => { result.set_is(is); @@ -218,7 +252,7 @@ fn create_html_element( }, }; - // Step 8 + // Step 6. Return result. result } |