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HTMLOptionElement.ts
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HTMLOptionElement.ts
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import IAttr from '../attr/IAttr';
import HTMLElement from '../html-element/HTMLElement';
import IHTMLElement from '../html-element/IHTMLElement';
import IHTMLFormElement from '../html-form-element/IHTMLFormElement';
import HTMLSelectElement from '../html-select-element/HTMLSelectElement';
import IHTMLOptionElement from './IHTMLOptionElement';
/**
* HTML Option Element.
*
* Reference:
* https://developer.mozilla.org/en-US/docs/Web/API/HTMLOptionElement.
*/
export default class HTMLOptionElement extends HTMLElement implements IHTMLOptionElement {
public _index: number;
public _selectedness = false;
public _dirtyness = false;
/**
* Returns inner text, which is the rendered appearance of text.
*
* @returns Inner text.
*/
public get text(): string {
return this.innerText;
}
/**
* Sets the inner text, which is the rendered appearance of text.
*
* @param innerText Inner text.
*/
public set text(text: string) {
this.innerText = text;
}
/**
* Returns index.
*
* @returns Index.
*/
public get index(): number {
return this._index;
}
/**
* Returns the parent form element.
*
* @returns Form.
*/
public get form(): IHTMLFormElement {
let parent = <IHTMLElement>this.parentNode;
while (parent && parent.tagName !== 'FORM') {
parent = <IHTMLElement>parent.parentNode;
}
return <IHTMLFormElement>parent;
}
/**
* Returns selected.
*
* @returns Selected.
*/
public get selected(): boolean {
return this._selectedness;
}
/**
* Sets selected.
*
* @param selected Selected.
*/
public set selected(selected: boolean) {
const selectElement = this._getSelectElement();
this._dirtyness = true;
this._selectedness = Boolean(selected);
if (selectElement) {
selectElement._resetOptionSelectednes(this._selectedness ? this : null);
}
}
/**
* Returns disabled.
*
* @returns Disabled.
*/
public get disabled(): boolean {
return this.getAttributeNS(null, 'disabled') !== null;
}
/**
* Sets disabled.
*
* @param disabled Disabled.
*/
public set disabled(disabled: boolean) {
if (!disabled) {
this.removeAttributeNS(null, 'disabled');
} else {
this.setAttributeNS(null, 'disabled', '');
}
}
/**
* Returns value.
*
* @returns Value.
*/
public get value(): string {
return this.getAttributeNS(null, 'value') || '';
}
/**
* Sets value.
*
* @param value Value.
*/
public set value(value: string) {
this.setAttributeNS(null, 'value', value);
}
/**
* @override
*/
public setAttributeNode(attribute: IAttr): IAttr {
const replacedAttribute = super.setAttributeNode(attribute);
if (
!this._dirtyness &&
attribute.name === 'selected' &&
replacedAttribute?.value !== attribute.value
) {
const selectElement = this._getSelectElement();
this._selectedness = true;
if (selectElement) {
selectElement._resetOptionSelectednes(this);
}
}
return replacedAttribute;
}
/**
* @override
*/
public removeAttributeNode(attribute: IAttr): IAttr {
super.removeAttributeNode(attribute);
if (!this._dirtyness && attribute.name === 'selected') {
const selectElement = this._getSelectElement();
this._selectedness = false;
if (selectElement) {
selectElement._resetOptionSelectednes();
}
}
return attribute;
}
/**
* Returns select element.
*
* @returns Select element.
*/
private _getSelectElement(): HTMLSelectElement {
const parentNode = <HTMLSelectElement>this.parentNode;
if (parentNode?.tagName === 'SELECT') {
return <HTMLSelectElement>parentNode;
}
if ((<HTMLSelectElement>parentNode?.parentNode)?.tagName === 'SELECT') {
return <HTMLSelectElement>parentNode.parentNode;
}
}
}