Class Paste

src/components/modules/paste.ts:111–1005

 * @version 2.0.0
 */
export default class Paste extends Module {
  /** If string`s length is greater than this number we don't check paste patterns */
  public static readonly PATTERN_PROCESSING_MAX_LENGTH = 450;

  /** Custom EditorJS mime-type to handle in-editor copy/paste actions */
  public readonly MIME_TYPE = 'application/x-editor-js';

  /**
   * Tags` substitutions parameters
   */
  private toolsTags: { [tag: string]: TagSubstitute } = {};

  /**
   * Store tags to substitute by tool name
   */
  private tagsByTool: { [tools: string]: string[] } = {};

  /** Patterns` substitutions parameters */
  private toolsPatterns: PatternSubstitute[] = [];

  /** Files` substitutions parameters */
  private toolsFiles: {
    [tool: string]: FilesSubstitution;
  } = {};

  /**
   * List of tools which do not need a paste handling
   */
  private exceptionList: string[] = [];

  /**
   * Set onPaste callback and collect tools` paste configurations
   */
  public async prepare(): Promise<void> {
    this.processTools();
  }

  /**
   * Set read-only state
   *
   * @param {boolean} readOnlyEnabled - read only flag value
   */
  public toggleReadOnly(readOnlyEnabled: boolean): void {
    if (!readOnlyEnabled) {
      this.setCallback();
    } else {
      this.unsetCallback();
    }
  }

  /**
   * Handle pasted or dropped data transfer object
   *
   * @param {DataTransfer} dataTransfer - pasted or dropped data transfer object
   * @param {boolean} isDragNDrop - true if data transfer comes from drag'n'drop events
   */
  public async processDataTransfer(dataTransfer: DataTransfer, isDragNDrop = false): Promise<void> {
    const { Tools } = this.Editor;