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class:EFI"ProcessedAsset; FI"logical_path; F"cargo_wiki/jquery.pjax.jsI"pathname; F"`/Users/rawane/workspace/projets/cargo_wiki/app/assets/javascripts/cargo_wiki/jquery.pjax.jsI"content_type; FI"application/javascript; FI"
mtime; FI"2012-02-12T08:16:14+01:00; FI"length; FiW)I"digest; F"%2802e90f071164ff417d3f7090882c29I"source; FI"W)// jquery.pjax.js
// copyright chris wanstrath
// https://github.com/defunkt/jquery-pjax

(function($){

// When called on a link, fetches the href with ajax into the
// container specified as the first parameter or with the data-pjax
// attribute on the link itself.
//
// Tries to make sure the back button and ctrl+click work the way
// you'd expect.
//
// Accepts a jQuery ajax options object that may include these
// pjax specific options:
//
// container - Where to stick the response body. Usually a String selector.
//             $(container).html(xhr.responseBody)
//      push - Whether to pushState the URL. Defaults to true (of course).
//   replace - Want to use replaceState instead? That's cool.
//
// For convenience the first parameter can be either the container or
// the options object.
//
// Returns the jQuery object
$.fn.pjax = function( container, options ) {
  options = optionsFor(container, options)
  return this.live('click', function(event){
    return handleClick(event, options)
  })
}

// Public: pjax on click handler
//
// Exported as $.pjax.click.
//
// event   - "click" jQuery.Event
// options - pjax options
//
// Examples
//
//   $('a').live('click', $.pjax.click)
//   // is the same as
//   $('a').pjax()
//
//  $(document).on('click', 'a', function(event) {
//    var container = $(this).closest('[data-pjax-container]')
//    return $.pjax.click(event, container)
//  })
//
// Returns false if pjax runs, otherwise nothing.
function handleClick(event, container, options) {
  options = optionsFor(container, options)

  var link = event.currentTarget

  // Middle click, cmd click, and ctrl click should open
  // links in a new tab as normal.
  if ( event.which > 1 || event.metaKey )
    return

  // Ignore cross origin links
  if ( location.protocol !== link.protocol || location.host !== link.host )
    return

  // Ignore anchors on the same page
  if ( link.hash && link.href.replace(link.hash, '') ===
       location.href.replace(location.hash, '') )
    return

  var defaults = {
    url: link.href,
    container: $(link).attr('data-pjax'),
    clickedElement: $(link),
    fragment: null
  }

  $.pjax($.extend({}, defaults, options))

  event.preventDefault()
  return false
}


// Loads a URL with ajax, puts the response body inside a container,
// then pushState()'s the loaded URL.
//
// Works just like $.ajax in that it accepts a jQuery ajax
// settings object (with keys like url, type, data, etc).
//
// Accepts these extra keys:
//
// container - Where to stick the response body.
//             $(container).html(xhr.responseBody)
//      push - Whether to pushState the URL. Defaults to true (of course).
//   replace - Want to use replaceState instead? That's cool.
//
// Use it just like $.ajax:
//
//   var xhr = $.pjax({ url: this.href, container: '#main' })
//   console.log( xhr.readyState )
//
// Returns whatever $.ajax returns.
var pjax = $.pjax = function( options ) {
  var $container = findContainerFor(options.container),
      success = options.success || $.noop

  // We don't want to let anyone override our success handler.
  delete options.success

  options = $.extend(true, {}, pjax.defaults, options)

  if ( $.isFunction(options.url) ) {
    options.url = options.url()
  }

  options.context = $container

  options.success = function(data){
    if ( options.fragment ) {
      // If they specified a fragment, look for it in the response
      // and pull it out.
      var $fragment = $(data).find(options.fragment)
      if ( $fragment.length )
        data = $fragment.children()
      else
        return window.location = options.url
    } else {
        // If we got no data or an entire web page, go directly
        // to the page and let normal error handling happen.
        if ( !$.trim(data) || /<html/i.test(data) )
          return window.location = options.url
    }

    // Make it happen.
    this.html(data)

    // If there's a <title> tag in the response, use it as
    // the page's title.
    var oldTitle = document.title,
        title = $.trim( this.find('title').remove().text() )

    // No <title>? Fragment? Look for data-title and title attributes.
    if ( !title && options.fragment ) {
      title = $fragment.attr('title') || $fragment.data('title')
    }

    if ( title ) document.title = title

    var state = {
      pjax: $container.selector,
      fragment: options.fragment,
      timeout: options.timeout
    }

    // If there are extra params, save the complete URL in the state object
    var query = $.param(options.data)
    if ( query != "_pjax=true" )
      state.url = options.url + (/\?/.test(options.url) ? "&" : "?") + query

    if ( options.replace ) {
      pjax.active = true
      window.history.replaceState(state, document.title, options.url)
    } else if ( options.push ) {
      // this extra replaceState before first push ensures good back
      // button behavior
      if ( !pjax.active ) {
        window.history.replaceState($.extend({}, state, {url:null}), oldTitle)
        pjax.active = true
      }

      window.history.pushState(state, document.title, options.url)
    }

    // Google Analytics support
    if ( (options.replace || options.push) && window._gaq )
      _gaq.push(['_trackPageview'])

    // If the URL has a hash in it, make sure the browser
    // knows to navigate to the hash.
    var hash = window.location.hash.toString()
    if ( hash !== '' ) {
      window.location.href = hash
    }

    // Invoke their success handler if they gave us one.
    success.apply(this, arguments)
  }

  // Cancel the current request if we're already pjaxing
  var xhr = pjax.xhr
  if ( xhr && xhr.readyState < 4) {
    xhr.onreadystatechange = $.noop
    xhr.abort()
  }

  pjax.options = options
  pjax.xhr = $.ajax(options)
  $(document).trigger('pjax', [pjax.xhr, options])

  return pjax.xhr
}


// Internal: Build options Object for arguments.
//
// For convenience the first parameter can be either the container or
// the options object.
//
// Examples
//
//   optionsFor('#container')
//   // => {container: '#container'}
//
//   optionsFor('#container', {push: true})
//   // => {container: '#container', push: true}
//
//   optionsFor({container: '#container', push: true})
//   // => {container: '#container', push: true}
//
// Returns options Object.
function optionsFor(container, options) {
  // Both container and options
  if ( container && options )
    options.container = container

  // First argument is options Object
  else if ( $.isPlainObject(container) )
    options = container

  // Only container
  else
    options = {container: container}

  // Find and validate container
  if (options.container)
    options.container = findContainerFor(options.container)

  return options
}

// Internal: Find container element for a variety of inputs.
//
// Because we can't persist elements using the history API, we must be
// able to find a String selector that will consistently find the Element.
//
// container - A selector String, jQuery object, or DOM Element.
//
// Returns a jQuery object whose context is `document` and has a selector.
function findContainerFor(container) {
  container = $(container)

  if ( !container.length ) {
    throw "no pjax container for " + container.selector
  } else if ( container.selector !== '' && container.context === document ) {
    return container
  } else if ( container.attr('id') ) {
    return $('#' + container.attr('id'))
  } else {
    throw "cant get selector for pjax container!"
  }
}


var timeoutTimer = null

pjax.defaults = {
  timeout: 650,
  push: true,
  replace: false,
  // We want the browser to maintain two separate internal caches: one for
  // pjax'd partial page loads and one for normal page loads. Without
  // adding this secret parameter, some browsers will often confuse the two.
  data: { _pjax: true },
  type: 'GET',
  dataType: 'html',
  beforeSend: function(xhr, settings){
    var context = this

    if (settings.async && settings.timeout > 0) {
      timeoutTimer = setTimeout(function() {
        var event = $.Event('pjax:timeout')
        context.trigger(event, [xhr, pjax.options])
        if (event.result !== false)
          xhr.abort('timeout')
      }, settings.timeout)

      // Clear timeout setting so jquerys internal timeout isn't invoked
      settings.timeout = 0
    }

    this.trigger('pjax:start', [xhr, pjax.options])
    // start.pjax is deprecated
    this.trigger('start.pjax', [xhr, pjax.options])
    xhr.setRequestHeader('X-PJAX', 'true')
  },
  error: function(xhr, textStatus, errorThrown){
    if ( textStatus !== 'abort' )
      window.location = pjax.options.url
  },
  complete: function(xhr){
    if (timeoutTimer)
      clearTimeout(timeoutTimer)

    this.trigger('pjax:end', [xhr, pjax.options])
    // end.pjax is deprecated
    this.trigger('end.pjax', [xhr, pjax.options])
  }
}

// Export $.pjax.click
pjax.click = handleClick


// Used to detect initial (useless) popstate.
// If history.state exists, assume browser isn't going to fire initial popstate.
var popped = ('state' in window.history), initialURL = location.href


// popstate handler takes care of the back and forward buttons
//
// You probably shouldn't use pjax on pages with other pushState
// stuff yet.
$(window).bind('popstate', function(event){
  // Ignore inital popstate that some browsers fire on page load
  var initialPop = !popped && location.href == initialURL
  popped = true
  if ( initialPop ) return

  var state = event.state

  if ( state && state.pjax ) {
    var container = state.pjax
    if ( $(container+'').length )
      $.pjax({
        url: state.url || location.href,
        fragment: state.fragment,
        container: container,
        push: false,
        timeout: state.timeout
      })
    else
      window.location = location.href
  }
})


// Add the state property to jQuery's event object so we can use it in
// $(window).bind('popstate')
if ( $.inArray('state', $.event.props) < 0 )
  $.event.props.push('state')


// Is pjax supported by this browser?
$.support.pjax =
  window.history && window.history.pushState && window.history.replaceState
  // pushState isn't reliable on iOS until 5.
  && !navigator.userAgent.match(/((iPod|iPhone|iPad).+\bOS\s+[1-4]|WebApps\/.+CFNetwork)/)


// Fall back to normalcy for older browsers.
if ( !$.support.pjax ) {
  $.pjax = function( options ) {
    window.location = $.isFunction(options.url) ? options.url() : options.url
  }
  $.pjax.click = $.noop
  $.fn.pjax = function() { return this }
}

})(jQuery);
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