mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-14 15:56:38 +03:00
Joey Parrish
f539147d48
This fixes all the license headers in the main library, which corrects the appearance of the main license in the compiled output. It seems that the `!` in the header forces the compiler to keep it in the output. I believe older compiler releases did this purely based on `@license`. Issue #2638 Change-Id: I7f0e918caad10c9af689c9d07672b7fe9be7b2f3
94 lines
2.2 KiB
JavaScript
94 lines
2.2 KiB
JavaScript
/*! @license
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* Shaka Player
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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goog.provide('shaka.util.Dom');
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goog.require('goog.asserts');
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// TODO: revisit this when Closure Compiler supports partially-exported classes.
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/** @export */
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shaka.util.Dom = class {
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/**
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* Creates an element, and cast the type from Element to HTMLElement.
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*
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* @param {string} tagName
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* @return {!HTMLElement}
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*/
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static createHTMLElement(tagName) {
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const element =
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/** @type {!HTMLElement} */ (document.createElement(tagName));
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return element;
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}
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/**
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* Create a "button" element with the correct type.
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*
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* The compiler is very picky about the use of the "disabled" property on
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* HTMLElement, since it is only defined on certain subclasses of that. This
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* method merely creates a button and casts it to the correct type.
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*
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* @return {!HTMLButtonElement}
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*/
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static createButton() {
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return /** @type {!HTMLButtonElement} */(document.createElement('button'));
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}
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/**
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* Cast a Node/Element to an HTMLElement
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*
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* @param {!Node|!Element} original
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* @return {!HTMLElement}
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*/
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static asHTMLElement(original) {
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return /** @type {!HTMLElement}*/ (original);
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}
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/**
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* Cast a Node/Element to an HTMLMediaElement
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*
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* @param {!Node|!Element} original
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* @return {!HTMLMediaElement}
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*/
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static asHTMLMediaElement(original) {
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return /** @type {!HTMLMediaElement}*/ (original);
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}
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/**
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* Returns the element with a given class name.
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* Assumes the class name to be unique for a given parent.
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*
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* @param {string} className
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* @param {!HTMLElement} parent
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* @return {!HTMLElement}
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*/
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static getElementByClassName(className, parent) {
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const elements = parent.getElementsByClassName(className);
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goog.asserts.assert(elements.length == 1,
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'Should only be one element with class name ' + className);
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return shaka.util.Dom.asHTMLElement(elements[0]);
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}
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/**
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* Remove all of the child nodes of an element.
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* @param {!Element} element
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* @export
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*/
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static removeAllChildren(element) {
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while (element.firstChild) {
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element.removeChild(element.firstChild);
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}
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}
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};
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