Class Script

javascript/selenium-webdriver/lib/script.js:25–140

const by = require('./by')

class Script {
  #driver
  #logInspector
  #script

  constructor(driver) {
    this.#driver = driver
  }

  // This should be done in the constructor.
  // But since it needs to call async methods we cannot do that in the constructor.
  // We can have a separate async method that initialises the Script instance.
  // However, that pattern does not allow chaining the methods as we would like the user to use it.
  // Since it involves awaiting to get the instance and then another await to call the method.
  // Using this allows the user to do this "await driver.script().addJavaScriptErrorHandler(callback)"
  async #init() {
    if (this.#logInspector !== undefined) {
      return
    }
    this.#logInspector = await logInspector(this.#driver)
  }

  async #initScript() {
    if (this.#script !== undefined) {
      return
    }
    this.#script = await scriptManager([], this.#driver)
  }

  async addJavaScriptErrorHandler(callback) {
    await this.#init()
    return await this.#logInspector.onJavascriptException(callback)
  }

  async removeJavaScriptErrorHandler(id) {
    await this.#init()
    await this.#logInspector.removeCallback(id)
  }

  async addConsoleMessageHandler(callback) {
    await this.#init()
    return this.#logInspector.onConsoleEntry(callback)
  }

  async removeConsoleMessageHandler(id) {
    await this.#init()

    await this.#logInspector.removeCallback(id)
  }

  async addDomMutationHandler(callback) {
    await this.#initScript()

    let argumentValues = []
    let value = LocalValue.createChannelValue(new ChannelValue('channel_name'))
    argumentValues.push(value)

    const filePath = path.join(__dirname, 'atoms', 'bidi-mutation-listener.js')