/* Pushup
 * Copyright (c) 2009 Nick Stakenburg (www.nickstakenburg.com)
 *
 * License: MIT-style license.
 * Website: http://www.pushuptheweb.com
 *
 */
/*
 Copyright (c) 2008 Nick Stakenburg (http://www.nickstakenburg.com)

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

*/

var Pushup = {
  Version: '1.0.3',
  options: {
    appearDelay: .5,
    fadeDelay: 6,
    images: '../img/pushup/',
    message: 'Su navegador está desactualizado. Pulse aquí para actualizarlo podrá ver la web de PA QUE VEAS correctamente',
    reminder: {
      hours: 1,
      message: 'Recuérdamelo otra vez en #{hours}'
    },
    skip: true
  },
  updateLinks: {
    IE: 'http://www.microsoft.com/windows/downloads/ie/',
    Firefox: 'http://www.getfirefox.com',
    Safari: 'http://www.apple.com/safari/download/',
    Opera: 'http://www.opera.com/download/'
  },
  Browser: {
    IE: !!(window.attachEvent &&
      navigator.userAgent.indexOf('Opera') === -1),
    Firefox: navigator.userAgent.indexOf('Firefox') > -1,
    Safari: navigator.userAgent.indexOf('AppleWebKit/') > -1 &&
      /Apple/.test(navigator.vendor),
    Opera: navigator.userAgent.indexOf('Opera') > -1
  }
};

Pushup.conditions = {
  IE: (function(agent) {
    var version = /MSIE ([\d.]+)/.exec(agent);
    return version && parseFloat(version[1]) < 7;
  })(navigator.userAgent),
  Firefox: Pushup.Browser.Firefox &&
    parseFloat(navigator.userAgent.match(/Firefox[\/\s](\d+)/)[1]) < 3,
  Safari: Pushup.Browser.Safari &&
    parseFloat(navigator.userAgent.match(/AppleWebKit\/(\d+)/)[1]) < 500,
  Opera: Pushup.Browser.Opera && (!window.opera.version ||
    parseFloat(window.opera.version()) < 9.5)
};

(function() {
// find current browser and check if it needs an update
for (var browser in Pushup.Browser)
  if (Pushup.Browser[browser]) Pushup._browserUsed = browser;
Pushup._updateBrowser = Pushup.conditions[Pushup._browserUsed] &&
  Pushup._browserUsed;

// stop if no update is required and we want to skip build
if (!Pushup._updateBrowser && Pushup.options.skip) return;

function Extend(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
}

Extend(Pushup, {
  start: function() {
    // get the image directory
    if (/^(https?:\/\/|\/)/.test(this.options.images))
      this.images = this.options.images;
    else {
      var srcMatch = /pushup(?:-[\w\d.]+)?\.js(.*)/,
       scripts = document.getElementsByTagName('script');
      for (var i = 0, l = scripts.length; i < l; i++) {
        var s = scripts[i];
        if (s.src && s.src.match(srcMatch))
          this.images = s.src.replace(srcMatch, '') + this.options.images;
      }
    }
    if (Pushup._updateBrowser) this.show();
  },

  build: function() {
    this.pushup = document.createElement('div');
    Opacity.set(this.pushup, 0);
    this.pushup.id = 'pushup';

    this.messageLink = this.pushup.appendChild(document.createElement('a'));
    this.messageLink.className = 'pushup_messageLink';
    this.messageLink.target = '_blank';

    this.messageLink.appendChild(this.icon = document.createElement('div'));
    this.icon.className = 'pushup_icon';

    this.messageLink.appendChild(this.message = document.createElement('span'));
    this.message.className = 'pushup_message';
    this.message.innerHTML = this.options.message;

    // reminder message if cookies are enabled
    var hours = this.options.reminder.hours;
    if (hours && Pushup.cookiesEnabled) {
      this.pushup.appendChild(this.reminder = document.createElement('a'));
      this.reminder.href = '#';
      this.reminder.className = 'pushup_reminder';
      this.pushup.className = 'withReminder';
      var H = hours + ' hour' + (hours > 1 ? 's' : ''),
       message = this.options.reminder.message.replace('#{hours}', H);
      this.reminder.innerHTML = message;
    }

    // Older Opera doesn't handle float correctly
    if (Pushup.Browser.Opera &&
       (!window.opera.version || parseFloat(window.opera.version()) < 9.25)) {
      this.messageLink.style.cssFloat = 'none';
      this.reminder.style.cssFloat = 'none';
    }

    Pushup.setBrowser(Pushup._updateBrowser);
    document.body.appendChild(this.pushup);
    Pushup.addEvents();
  },

  addEvents: function() {
    if (this.reminder) {
      Event.add(this.reminder, 'click', function(event) {
        Event.stop(event);
        Pushup.setReminder(Pushup.options.reminder.hours);
        Pushup.fade();
      });
    }
    Event.add(this.pushup, 'mouseover', Pushup.clearFade);
    Event.add(this.pushup, 'mouseout', function() {
      Pushup.fade({ delay: Pushup.options.fadeDelay })
    });
  },

  setBrowser: function(browser) {
    browser = browser || 'IE';
    setPngBackground(this.icon, this.images + browser.toLowerCase() + '.png');
    this.messageLink.href = this.updateLinks[browser];
  },

  show: function() {
    // default to IE if no browser was detected
    var browser = typeof arguments[0] == 'string' ?
      arguments[0] : Pushup._browserUsed || 'IE',
     options = arguments[browser ? 1 : 0] || {};

    if (options.resetReminder) Pushup.resetReminder();

    // show if not blocked by cookie
    if (!options.ignoreReminder && Pushup.cookiesEnabled &&
      Cookie.get('_pushupBlocked')) return;

    if (!Pushup.pushup) Pushup.build();
    Opacity.set(Pushup.pushup, 0);
    Pushup.pushup.style.display = 'block';
    if (browser) Pushup.setBrowser(browser);
    this.appear({ fadeAfter: true, delay: Pushup.options.appearDelay });
  },

  appear: function(delay) {
    Pushup.clearFade();
    var options = arguments[0] || {};
    return window.setTimeout(function() {
      Appear(Pushup.pushup, { afterFinish: function() {
        if (options.fadeAfter)
          Pushup.fade({ delay: Pushup.options.fadeDelay });
      }});
    }, (options.delay || 0.01) * 1000);
  },

  clearFade: function() {
    if (Pushup._fadeTimer) {
      window.clearTimeout(Pushup._fadeTimer);
      Pushup._fadeTimer = null;
    }
  },

  fade: function() {
    var options = arguments[0] || {};
    Pushup._fadeTimer = window.setTimeout(function() {
      Fade(Pushup.pushup);
    }, (options.delay || 0.01) * 1000);
  },

  setReminder: function(hours) {
    Cookie.set('_pushupBlocked', 'blocked', { duration: 1 / 24 * hours })
  },

  resetReminder: function() { Cookie.remove('_pushupBlocked') }
});

// Opacity adapted from the Prototype JavaScript framework
// http://www.prototypejs.org
var Opacity = {
  set: function(element, value) {
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
  },

  get:  function(element) {
    var opacity = element.style.opacity;
    return opacity ? parseFloat(opacity) : 1.0;
  }
};

if (Pushup.Browser.IE) {
  Opacity.get = function(element) {
    var opacity = element.style.opacity;
    if (!opacity && element.currentStyle) opacity = element.currentStyle[opacity];

    if (opacity = (element.style.filter || '').match(/alpha\(opacity=(.*)\)/))
      if (opacity[1]) return parseFloat(opacity[1]) / 100;
    return 1.0;
  };

  Opacity.set = function(element, value) {
    function stripAlpha(filter) {
      return filter.replace(/alpha\([^\)]*\)/gi,'')
    }
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;
    var filter = element.style.filter,
     style = element.style;
    if (value == 1 || value === '') (filter = stripAlpha(filter)) ?
      style.filter = filter : style.filter = '';
    else style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
  };
}

function Appear(element) {
  var current = Opacity.get(element),
   options = arguments[1] || {};
  if (element.style.display != 'block')
    element.style.display = 'block';
  if (current < 1) {
    setTimeout(function() {
      Opacity.set(element, current += 0.05);
      Appear(element, options);
    }, 0.01);
  }
  else {
    if (Pushup.Browser.IE && element.style.filter)
      element.style.removeAttribute('filter');
    if (options.afterFinish) options.afterFinish.call();
  }
}

function Fade(element) {
  var current = Opacity.get(element),
   options = arguments[1] || {};
  if (current > 0) {
    setTimeout(function() {
      Opacity.set(element, current -= 0.05);
      Fade(element, options);
    }, 0.01);
  }
  else {
    element.style.display = 'none';
    if (options.afterFinish) options.afterFinish.call();
  }
}

function setPngBackground(element, url) {
  var options = Extend({
    align: 'top left',
    repeat: 'no-repeat',
    sizingMethod: 'crop',
    backgroundColor: ''
  }, arguments[2] || {});

  Extend(element.style, arguments.callee.IEBelow7 ? {
    filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' +
      url + '\'\', sizingMethod=\'' + options.sizingMethod + '\')'
  } : {
    background: options.backgroundColor + ' url(' + url + ') ' +
      options.align + ' ' + options.repeat
  });
}
setPngBackground.IEBelow7 = Pushup.Browser.IE &&
  parseFloat(/MSIE ([\d.]+)/.exec(navigator.userAgent)[1]) < 7;

// Based on the work of Peter-Paul Koch - http://www.quirksmode.org
var Cookie = {
  set: function(name, value) {
    var expires = '', options = arguments[2] || {};
    if (options.duration) {
      var date = new Date();
      date.setTime(date.getTime() + options.duration * 1000 * 60 * 60 * 24);
      value += '; expires=' + date.toGMTString();
    }
    document.cookie = name + "=" + value + expires + "; path=/";
  },

  remove: function(name) { this.set(name, '', -1) },

  get: function(name) {
    var cookies = document.cookie.split(';'), nameEQ = name + "=";
    for (var i = 0, l = cookies.length; i < l; i++) {
      var c = cookies[i];
      while (c.charAt(0) == ' ')
        c = c.substring(1,c.length);
      if (c.indexOf(nameEQ) == 0)
        return c.substring(nameEQ.length, c.length);
    }
    return null;
  }
};

// check if cookies are enabled
Pushup.cookiesEnabled = (function(test) {
  if (Cookie.get(test)) return true;
  Cookie.set(test, 'test', { duration: 15 });
  return Cookie.get(test);
})('_pushupCookiesEnabled');

var Event = {
  add: function(obj, type, fn) {
    if (obj.attachEvent) {
      obj['e' + type + fn] = fn;
      obj[type + fn] = function(){ obj['e' + type +fn](window.event) };
      obj.attachEvent('on' + type, obj[type + fn]);
    }
    else obj.addEventListener(type, fn, false);
  },

  stop: function(event) {
    if (Pushup.Browser.IE) {
      event.cancelBubble = true;
      event.returnValue = false;
    }
    else {
      event.preventDefault();
      event.stopPropagation();
    }
  }
};

Event.add(window, 'load', function() { Pushup.start() });
})();