import type Element from "./Element.js";
import type { ElementProperties } from "./Element.js";
import type { TextFormatType } from "../../portal/jsonTypes.js";

export interface TextElementProperties extends ElementProperties, Partial<Pick<TextElement, "text" | "textFormat">> {}

/**
 * A `TextElement` form element is used to define descriptive text as an element within a layer or [FeatureForm](https://developers.arcgis.com/javascript/latest/references/core/widgets/FeatureForm/) [FormTemplate](https://developers.arcgis.com/javascript/latest/references/core/form/FormTemplate/) and can be used to aid those entering or updating information.
 * The text may reference values returned from a field attribute or an
 * [Arcade](https://developers.arcgis.com/javascript/latest/arcade/) expression defined in a FormTemplate's [FormTemplate.expressionInfos](https://developers.arcgis.com/javascript/latest/references/core/form/FormTemplate/#expressionInfos) property.
 *
 * [![form template text element](https://developers.arcgis.com/javascript/latest/assets/img/apiref/widgets/formtemplate/text-element.png)](https://developers.arcgis.com/javascript/latest/sample-code/widgets-editor-form-elements/)
 *
 * @see [FormTemplate](https://developers.arcgis.com/javascript/latest/references/core/form/FormTemplate/)
 * @see [FeatureForm](https://developers.arcgis.com/javascript/latest/references/core/widgets/FeatureForm/)
 * @see [ExpressionInfo](https://developers.arcgis.com/javascript/latest/references/core/form/ExpressionInfo/)
 * @see [Sample - Edit FeatureLayers with form elements](https://developers.arcgis.com/javascript/latest/sample-code/widgets-editor-form-elements/)
 * @example
 * // Create a plain-text element.
 * const textElement = new TextElement({
 *   text: "Tree species: {COMMONNAME}."
 * });
 *
 * // Create a markdown text element with italics and bold text.
 * const markdownTextElement = new TextElement({
 *   textFormat: "markdown",
 *   text: "_This text is italicized_ & **This text is bold.**"
 * });
 *
 * layer.formTemplate = new FormTemplate({
 *   title: "Plain-text and markdown text elements",
 *   elements: [ textElement, markdownTextElement ]
 * });
 */
export default class TextElement extends Element {
  constructor(properties?: TextElementProperties);
  /**
   * The formatted string content to display. This may contain a field
   * name enclosed in `{}` (e.g. `{FIELDNAME}`), or an [Arcade](https://developers.arcgis.com/javascript/latest/arcade/)
   * expression [ExpressionInfo.name](https://developers.arcgis.com/javascript/latest/references/core/form/ExpressionInfo/#name) (e.g. `{expression/EXPRESSIONNAME}`).
   * Text content may also leverage Markdown formatting for these features:
   *
   * * Bold
   * * Bullet lists
   * * Headings
   * * Italic
   * * Links
   * * Numbered lists
   * * Quoting code
   * * Strikethrough
   *
   * @example
   * // This TextElement uses the markdown large heading.
   * const textElement = new TextElement({
   *   textFormat: "markdown",
   *   text: "##### This tree type is {COMMONNAME}."
   * });
   */
  accessor text: string | null | undefined;
  /**
   * Defines the format of the `text` property.
   *
   * @default "plain-text"
   */
  accessor textFormat: TextFormatType;
  /** Indicates the type of form [Element](https://developers.arcgis.com/javascript/latest/references/core/form/elements/Element/). This will always be "text"; */
  get type(): "text";
  /**
   * Creates a deep clone of the TextElement class.
   *
   * @returns A deep clone of the TextElement instance.
   */
  clone(): TextElement;
}