ui/Label.js


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const ansi = require('../util/ansi')

const DisplayElement = require('./DisplayElement')

module.exports = class Label extends DisplayElement {
  // A simple text display. Automatically adjusts size to fit text.

  constructor(text = '') {
    super()

    this.text = text
    this.textAttributes = []
  }

  fixLayout() {
    this.w = ansi.measureColumns(this.text)
  }

  drawTo(writable) {
    if (this.textAttributes.length) {
      writable.write(ansi.setAttributes(this.textAttributes))
    }

    this.writeTextTo(writable)

    if (this.textAttributes.length) {
      writable.write(ansi.resetAttributes())
    }

    super.drawTo(writable)
  }

  writeTextTo(writable) {
    writable.write(ansi.moveCursor(this.absTop, this.absLeft))
    writable.write(this.text)
  }

  set text(newText) {
    this._text = newText
    this.fixLayout()
  }

  get text() {
    return this._text
  }
}