OliveTin/webui.dev/js/LoginForm.js

export class LoginForm extends window.HTMLElement {
  setup () {
    const tpl = document.getElementById('tplLoginForm')
    this.content = tpl.content.cloneNode(true)

    this.appendChild(this.content)
  }

  processOAuth2Providers (providers) {
    if (providers === null) {
      return
    }

    if (providers.length > 0) {
      this.querySelector('.login-oauth2').hidden = false
      this.querySelector('.login-disabled').hidden = true

      for (const provider of providers) {
        const providerForm = document.createElement('form')
        providerForm.method = 'GET'
        providerForm.action = '/oauth2?provider=' + provider.Name

        const providerButton = document.createElement('button')
        providerButton.type = 'submit'
        providerButton.innerHTML = '<span class = "oauth2-icon">' + provider.Icon + '</span> Login with ' + provider.Title

        providerForm.appendChild(providerButton)

        this.querySelector('.login-oauth2').appendChild(providerForm)
      }
    }
  }

  processLocalLogin (enabled) {
    if (enabled) {
      this.querySelector('.login-local').hidden = false
      this.querySelector('.login-disabled').hidden = true
    }
  }
}

window.customElements.define('login-form', LoginForm)