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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <title>yoob.Playfield Demo</title>
  <script src="../src/yoob/cursor.js"></script>
  <script src="../src/yoob/source-html-view.js"></script>
  <style>
#canvas { border: 1px solid blue; }
#pre { border: 1px solid red; font-size: 20px; }
  </style>
</head>
<body>

<h1>yoob.SourceHTMLView Demo</h1>

<textarea id="program" rows="10" cols="40">
10 print "hello"
20 goto 10
etc
</textarea>

<pre id="pre"></pre>

<button id="load">Load</button>
<button id="step">Step</button>

</body>
<script>
  var pre = document.getElementById('pre');
  var textarea = document.getElementById('program');

  var pc1 = new yoob.Cursor();
  var pc2 = new yoob.Cursor();
  pc2.fillStyle = "brown";
  var sourceView = new yoob.SourceHTMLView();
  sourceView.init(undefined, pre).setCursors([pc1, pc2]);

  document.getElementById('load').onclick = function(e) {
    sourceView.setSourceText(textarea.value);
    pc1.x = 0;
    pc1.y = 0;
    pc1.dx = 1;
    pc1.dy = 0;
    pc2.x = 10;
    pc2.y = 0;
    pc2.dx = 1;
    pc2.dy = 0;
    sourceView.draw();
  };

  document.getElementById('step').onclick = function(e) {
    pc1.advance();
    while (sourceView.text.charAt(pc1.x) === '\n') {
        pc1.advance();
    }
    sourceView.draw();
  };
</script>