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authorBartek Iwańczuk <biwanczuk@gmail.com>2020-03-05 13:05:41 +0100
committerBartek Iwańczuk <biwanczuk@gmail.com>2020-03-05 18:48:55 +0100
commit2e590072148c85bbc479ab49aa9556b0a2cfaff2 (patch)
tree89747e7b6762158e35f9120ca0ef0fa14991ae34 /cli/js/dom_util.ts
parent9b59ed7c7907c5f365e72b5c5a74114eb8ff1488 (diff)
move Web APIs to cli/js/web/
Diffstat (limited to 'cli/js/dom_util.ts')
-rw-r--r--cli/js/dom_util.ts85
1 files changed, 0 insertions, 85 deletions
diff --git a/cli/js/dom_util.ts b/cli/js/dom_util.ts
deleted file mode 100644
index 5780d9c52..000000000
--- a/cli/js/dom_util.ts
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-// Utility functions for DOM nodes
-import * as domTypes from "./dom_types.ts";
-
-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];
- }
- }
-}