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HTMLElement.ts
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HTMLElement.ts
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import Element from '../element/Element';
import IHTMLElement from './IHTMLElement';
import CSSStyleDeclaration from '../../css/CSSStyleDeclaration';
import Attr from '../../attribute/Attr';
import FocusEvent from '../../event/events/FocusEvent';
import PointerEvent from '../../event/events/PointerEvent';
import Node from '../node/Node';
/**
* HTML Element.
*
* Reference:
* https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement.
*/
export default class HTMLElement extends Element implements IHTMLElement {
public readonly accessKey = '';
public readonly accessKeyLabel = '';
public readonly contentEditable = 'inherit';
public readonly isContentEditable = false;
public readonly offsetHeight = 0;
public readonly offsetWidth = 0;
public readonly offsetLeft = 0;
public readonly offsetTop = 0;
public readonly clientHeight = 0;
public readonly clientWidth = 0;
private _style: CSSStyleDeclaration = null;
/**
* Returns tab index.
*
* @returns Tab index.
*/
public get tabIndex(): number {
const tabIndex = this.getAttributeNS(null, 'tabindex');
return tabIndex !== null ? Number(tabIndex) : -1;
}
/**
* Returns tab index.
*
* @param tabIndex Tab index.
*/
public set tabIndex(tabIndex: number) {
if (tabIndex === -1) {
this.removeAttributeNS(null, 'tabindex');
} else {
this.setAttributeNS(null, 'tabindex', String(tabIndex));
}
}
/**
* Returns inner text, which is the rendered appearance of text.
*
* @returns Inner text.
*/
public get innerText(): string {
let result = '';
for (const childNode of this.childNodes) {
if (childNode instanceof HTMLElement) {
if (childNode.tagName !== 'SCRIPT' && childNode.tagName !== 'STYLE') {
result += childNode.innerText;
}
} else if (
childNode.nodeType === Node.ELEMENT_NODE ||
childNode.nodeType === Node.TEXT_NODE
) {
result += childNode.textContent;
}
}
return result;
}
/**
* Sets the inner text, which is the rendered appearance of text.
*
* @param innerText Inner text.
*/
public set innerText(innerText: string) {
this.textContent = innerText;
}
/**
* Returns style.
*
* @returns Style.
*/
public get style(): CSSStyleDeclaration {
if (!this._style) {
this._style = new CSSStyleDeclaration(this._attributes);
}
return this._style;
}
/**
* Returns data set.
*
* @returns Data set.
*/
public get dataset(): { [key: string]: string } {
const dataset = {};
for (const name of Object.keys(this._attributes)) {
if (name.startsWith('data-')) {
dataset[name.replace('data-', '')] = this._attributes[name].value;
}
}
return dataset;
}
/**
* Returns direction.
*
* @returns Direction.
*/
public get dir(): string {
return this.getAttributeNS(null, 'dir') || '';
}
/**
* Returns direction.
*
* @param direction Direction.
*/
public set dir(direction: string) {
this.setAttributeNS(null, 'dir', direction);
}
/**
* Returns hidden.
*
* @returns Hidden.
*/
public get hidden(): boolean {
return this.getAttributeNS(null, 'hidden') !== null;
}
/**
* Returns hidden.
*
* @param hidden Hidden.
*/
public set hidden(hidden: boolean) {
if (!hidden) {
this.removeAttributeNS(null, 'hidden');
} else {
this.setAttributeNS(null, 'hidden', '');
}
}
/**
* Returns language.
*
* @returns Language.
*/
public get lang(): string {
return this.getAttributeNS(null, 'lang') || '';
}
/**
* Returns language.
*
* @param language Language.
*/
public set lang(lang: string) {
this.setAttributeNS(null, 'lang', lang);
}
/**
* Returns title.
*
* @returns Title.
*/
public get title(): string {
return this.getAttributeNS(null, 'title') || '';
}
/**
* Returns title.
*
* @param title Title.
*/
public set title(title: string) {
this.setAttributeNS(null, 'title', title);
}
/**
* Triggers a click event.
*/
public click(): void {
const event = new PointerEvent('click', {
bubbles: true,
composed: true
});
event.target = this;
event.currentTarget = this;
this.dispatchEvent(event);
}
/**
* Triggers a blur event.
*/
public blur(): void {
if (this.ownerDocument['_activeElement'] !== this || !this.isConnected) {
return;
}
this.ownerDocument['_activeElement'] = null;
for (const eventType of ['blur', 'focusout']) {
const event = new FocusEvent(eventType, {
bubbles: true,
composed: true
});
event.target = this;
event.currentTarget = this;
this.dispatchEvent(event);
}
}
/**
* Triggers a focus event.
*/
public focus(): void {
if (this.ownerDocument['_activeElement'] === this || !this.isConnected) {
return;
}
if (this.ownerDocument['_activeElement'] !== null) {
this.ownerDocument['_activeElement'].blur();
}
this.ownerDocument['_activeElement'] = this;
for (const eventType of ['focus', 'focusin']) {
const event = new FocusEvent(eventType, {
bubbles: true,
composed: true
});
event.target = this;
event.currentTarget = this;
this.dispatchEvent(event);
}
}
/**
* The setAttributeNode() method adds a new Attr node to the specified element.
*
* @override
* @param attribute Attribute.
* @returns Replaced attribute.
*/
public setAttributeNode(attribute: Attr): Attr {
const replacedAttribute = super.setAttributeNode(attribute);
if (attribute.name === 'style' && this._style) {
this._style.cssText = attribute.value;
}
return replacedAttribute;
}
/**
* Removes an Attr node.
*
* @override
* @param attribute Attribute.
*/
public removeAttributeNode(attribute: Attr): void {
super.removeAttributeNode(attribute);
if (attribute.name === 'style' && this._style) {
this._style.cssText = '';
}
}
/**
* Clones a node.
*
* @override
* @param [deep=false] "true" to clone deep.
* @returns Cloned node.
*/
public cloneNode(deep = false): IHTMLElement {
const clone = <HTMLElement>super.cloneNode(deep);
(<string>clone.accessKey) = this.accessKey;
(<string>clone.accessKeyLabel) = this.accessKeyLabel;
(<string>clone.contentEditable) = this.contentEditable;
(<boolean>clone.isContentEditable) = this.isContentEditable;
if (this._style) {
clone.style.cssText = this._style.cssText;
}
return clone;
}
}