openMenu()

in Dataset/JS/ReactSelect/index.tsx [898:922]

• 21 lines of code
• 5 McCabe index (conditional complexity)

  openMenu(focusOption: 'first' | 'last') {
    const { selectValue, isFocused } = this.state;
    const focusableOptions = this.buildFocusableOptions();
    let openAtIndex = focusOption === 'first' ? 0 : focusableOptions.length - 1;

    if (!this.props.isMulti) {
      const selectedIndex = focusableOptions.indexOf(selectValue[0]);
      if (selectedIndex > -1) {
        openAtIndex = selectedIndex;
      }
    }

    // only scroll if the menu isn't already open
    this.scrollToFocusedOptionOnUpdate = !(isFocused && this.menuListRef);

    this.setState(
      {
        inputIsHiddenAfterUpdate: false,
        focusedValue: null,
        focusedOption: focusableOptions[openAtIndex],
        focusedOptionId: this.getFocusedOptionId(focusableOptions[openAtIndex]),
      },
      () => this.onMenuOpen()
    );
  }