diff options
Diffstat (limited to 'cli/js/web/dom_util.ts')
-rw-r--r-- | cli/js/web/dom_util.ts | 88 |
1 files changed, 3 insertions, 85 deletions
diff --git a/cli/js/web/dom_util.ts b/cli/js/web/dom_util.ts index 40a8c618f..d12593e8e 100644 --- a/cli/js/web/dom_util.ts +++ b/cli/js/web/dom_util.ts @@ -1,6 +1,6 @@ // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license. -// Utility functions for DOM nodes -import * as domTypes from "./dom_types.ts"; + +import * as domTypes from "./dom_types.d.ts"; export function getDOMStringList(arr: string[]): domTypes.DOMStringList { Object.defineProperties(arr, { @@ -16,87 +16,5 @@ export function getDOMStringList(arr: string[]): domTypes.DOMStringList { }, }, }); - return (arr as unknown) as domTypes.DOMStringList; -} - -export function isNode(nodeImpl: domTypes.EventTarget | null): boolean { - return Boolean(nodeImpl && "nodeType" in nodeImpl); -} - -export function isShadowRoot(nodeImpl: domTypes.EventTarget | null): boolean { - return Boolean( - nodeImpl && - nodeImpl[domTypes.eventTargetNodeType] === - domTypes.NodeType.DOCUMENT_FRAGMENT_NODE && - nodeImpl[domTypes.eventTargetHost] != null - ); -} - -export function isSlotable(nodeImpl: domTypes.EventTarget | null): boolean { - return Boolean( - nodeImpl && - (nodeImpl[domTypes.eventTargetNodeType] === - domTypes.NodeType.ELEMENT_NODE || - nodeImpl[domTypes.eventTargetNodeType] === domTypes.NodeType.TEXT_NODE) - ); -} - -// https://dom.spec.whatwg.org/#node-trees -// const domSymbolTree = Symbol("DOM Symbol Tree"); - -// https://dom.spec.whatwg.org/#concept-shadow-including-inclusive-ancestor -export function isShadowInclusiveAncestor( - ancestor: domTypes.EventTarget | null, - node: domTypes.EventTarget | null -): boolean { - while (isNode(node)) { - if (node === ancestor) { - return true; - } - - if (isShadowRoot(node)) { - node = node && node[domTypes.eventTargetHost]; - } else { - node = null; // domSymbolTree.parent(node); - } - } - - return false; -} - -export function getRoot( - node: domTypes.EventTarget | null -): domTypes.EventTarget | null { - const root = node; - - // for (const ancestor of domSymbolTree.ancestorsIterator(node)) { - // root = ancestor; - // } - - return root; -} - -// https://dom.spec.whatwg.org/#retarget -export function retarget( - a: domTypes.EventTarget | null, - b: domTypes.EventTarget -): domTypes.EventTarget | null { - while (true) { - if (!isNode(a)) { - return a; - } - - const aRoot = getRoot(a); - - if (aRoot) { - if ( - !isShadowRoot(aRoot) || - (isNode(b) && isShadowInclusiveAncestor(aRoot, b)) - ) { - return a; - } - - a = aRoot[domTypes.eventTargetHost]; - } - } + return arr as string[] & domTypes.DOMStringList; } |