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 | export default interface FindPresenter {
  find(keyword: string, backwards: boolean): boolean;
  clearSelection(): void;
  // eslint-disable-next-line semi
}
// window.find(aString, aCaseSensitive, aBackwards, aWrapAround,
//             aWholeWord, aSearchInFrames);
//
// NOTE: window.find is not standard API
// https://developer.mozilla.org/en-US/docs/Web/API/Window/find
interface MyWindow extends Window {
  find(
    aString: string,
    aCaseSensitive?: boolean,
    aBackwards?: boolean,
    aWrapAround?: boolean,
    aWholeWord?: boolean,
    aSearchInFrames?: boolean,
    aShowDialog?: boolean): boolean;
}
// eslint-disable-next-line no-var, vars-on-top, init-declarations
declare var window: MyWindow;
export class FindPresenterImpl implements FindPresenter {
  find(keyword: string, backwards: boolean): boolean {
    let caseSensitive = false;
    let wrapScan = true;
    // NOTE: aWholeWord dows not implemented, and aSearchInFrames does not work
    // because of same origin policy
    let found = window.find(keyword, caseSensitive, backwards, wrapScan);
    if (found) {
      return found;
    }
    this.clearSelection();
    return window.find(keyword, caseSensitive, backwards, wrapScan);
  }
  clearSelection(): void {
    let sel = window.getSelection();
    if (sel) {
      sel.removeAllRanges();
    }
  }
}
 |