title: 'Block' text in certain format in EditText
body: <p>Well I don't know how this should be called. Anyone can suggest me on how to do below? </p>
  
  <p>So when user finish to write text in a certain format, the text is 'blocked' and later user can delete whole 'blocked' text instead of each character one by one when they want to.</p>
  
  <p><img src="https://i.stack.imgur.com/DijNS.png" alt="enter image description here"></p>