test-blessed.js

var blessed = require('blessed');

var program = blessed.program();

// Create a screen object.
var screen = blessed.screen();

function drawTui() {
  // Create a box perfectly centered horizontally and vertically.
  var box = blessed.box({
    top: 'center',
    left: 'center',
    width: '50%',
    height: '50%',
    content: 'Hello {bold}world{/bold}!',
    tags: true,
    border: {
      type: 'line'
    },
    style: {
      fg: 'white',
      bg: 'magenta',
      border: {
        fg: '#ffffff'
      },
      hover: {
        bg: 'green'
      }
    }
  });
  
  // Append our box to the screen.
  screen.append(box);
  
  // If our box is clicked, change the content.
  box.on('click', function(data) {
    box.setContent('{center}Some different {red-fg}content{/red-fg}.{/center}');
    screen.render();
  });
  
  // If box is focused, handle `enter`/`return` and give us some more content.
  box.key(['enter', 'return'], function(ch, key) {
    box.setContent('{right}Even different {black-fg}content{/black-fg}.{/right}\n');
    box.setLine(1, 'bar');
    box.insertLine(1, 'foo');
    screen.render();
  });

  //Focus our element.
  box.focus();
  
  //Render the screen.
  screen.render();
}

//Quit on Escape, q, or Control-C.
screen.key(['escape', 'q', 'C-c'], function(ch, key) {
  process.exit(0);
});

var tuiMode = true;
var pass = 0;
var timerId = null;
screen.key(['t'], function(ch, key) {
  tuiMode = !tuiMode;
  if (tuiMode) {
    if (timerId) {
      clearInterval(timerId);
      timerId = null;
    }
    drawTui();
  } else {
    var nodes = screen.children.slice();
    for (var i = 0; i < nodes.length; i++)
      screen.remove(nodes[i]);
    screen.render();
    timerId = setInterval(function() {
      console.log("hello " + (++pass));
    }, 100);
  }
});

drawTui();