add-to-homescreen.js

/*  Initialisation / Button events  */
// If added to home screen...
if(navigator.standalone === undefined || !!navigator.standalone) {

  // On Android scroll the screen by 1 pixel to hide the address bar
  if (navigator.userAgent.match(/Android/i)) {
    window.addEventListener("load", function() { window.scrollTo(0,1); }, false);
  }

  // Show the converter & hide the install option by default
  $('#wrapper').style.display = 'block';
  $('#install').style.display = 'none';

  // Calculator button events
  var buttons = $('#input-pad p');
  for (var i = 0, ii = buttons.length; i < ii; i++) {
    if (!!buttons[i].id.length) continue;
    buttons[i].touch(function() { Calculator.add(this.innerText); });
  }
  $('#clear').touch(function(e) {
    Calculator.clear();
  });

  $('#input').touch(function(e) {
    addClass($('body'), 'edit-rates-from');
  });
  $('#output').touch(function(e) {
    addClass($('body'), 'edit-rates-to');
  });

  // Flip currencies
  $('#flip').touch(function(e) {
    addClass($('body'), 'flip');
    setTimeout(function() {
      var last = { from: window.from_to['from'], to: window.from_to['to'] }
      Converter.update_currency_display(last.to, last.from);
      if (Calculator.input.innerHTML.length >= 9 || Calculator.output.innerHTML.length >= 9) {
        Calculator.clear();
      }
    }, 130);
    setTimeout(function() { removeClass($('body'), 'flip'); }, 275);
  });

  // Draw the currency list
  Converter.draw_currencies();

  // Currency selection events
  var rates = $('#rate-selection a');
  for (var i = 0, ii = rates.length; i < ii; i++) {
    rates[i].touch(function(e) {
      e.preventDefault();

      var id = this.id.split('-');
      args = id[0] == 'from' ? [id[1], null] : [null, id[1]];
      Converter.update_currency_display.apply(Converter, args);
      Calculator.clear();
      removeClass($('body'), 'edit-rates-\\w+');
    });
  }

  // Show the credits screen when in landscape orientation
  var detectOrientation = function() {
    if (window.orientation) addClass($('body'), 'credits');
    else removeClass($('body'), 'credits');
  }
  detectOrientation();
  window.addEventListener('orientationchange', detectOrientation);

  // If working in offline mode, update the display to reflect this
  if (!navigator.onLine) $('#network-status').className = 'offline';

  // Update the currency display on load
  Converter.update_currency_display();
  // Delay making the ajax request to update the exchange rates
  // This prevents the app locking up while the request is made
  setTimeout(function() { Converter.update_rates(); }, 100);

  // Update the app cache when ready
  window.applicationCache.addEventListener('updateready', function(){
    window.applicationCache.swapCache();
  }, false);

// If opened in mobile safari directly,
} else {
  // show the install screen
  $('#wrapper').style.display = 'none';
  $('#install').style.display = 'block';
}