Method updateSubmitButtonVisibility

app/javascript/draw.js:106–114

()

  }

  updateSubmitButtonVisibility () {
    if (this.pad.isEmpty()) {
      this.submitButton.style.display = 'none'
      this.placeholderButton.style.display = 'block'
    } else {
      this.submitButton.style.display = 'block'
      this.placeholderButton.style.display = 'none'
    }
  }

  async submitImage () {
    if (!isValidSignatureCanvas(this.pad.toData())) {