/*
 * OVDIALOG (for jQuery)
 * version: 0.1 (25/11/2011)
 * @requires jQuery v1.5 or later
 *
 * Examples at http://www.ovnetap.com
 *
 * Copyright 2011, Radomir Ochtyra [ radomir.ochtyra@ovnetap.com ]
 *
 * Usage:
 *
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=ovdialog]').ovdialog()
 *  })
 *
 *  <a href="#terms" rel="ovdialog">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="ovdialog">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="ovdialog">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 *
 *    jQuery.ovdialog('some html')
 *    jQuery.ovdialog('some html', 'my-groovy-style')
 *
 *  The above will open a ovdialog with "some html" as the content.
 *
 *    jQuery.ovdialog(function($) {
 *      $.get('blah.html', function(data) { $.ovdialog(data) })
 *    })
 *
 *  The above will show a loading screen before the passed function is called,
 *  allowing for a better ajaxy experience.
 *
 *  The ovdialog function can also display an ajax page, an image, or the contents of a div:
 *
 *    jQuery.ovdialog({ ajax: 'remote.html' })
 *    jQuery.ovdialog({ ajax: 'remote.html' }, 'my-groovy-style')
 *    jQuery.ovdialog({ image: 'stairs.jpg' })
 *    jQuery.ovdialog({ image: 'stairs.jpg' }, 'my-groovy-style')
 *    jQuery.ovdialog({ div: '#box' })
 *    jQuery.ovdialog({ div: '#box' }, 'my-groovy-style')
 *    jQuery.ovdialog({ raw: '<p>hello</p>' })
 *    jQuery.ovdialog({ raw: '<p>hello</p>' }, 'my-groovy-style')
 *
 *  Want to close the ovdialog?  Trigger the 'close.ovdialog' document event:
 *
 *    jQuery(document).trigger('close.ovdialog')
 *
 *  Ovdialog also has a bunch of other hooks:
 *
 *    loading.ovdialog
 *    beforeReveal.ovdialog
 *    reveal.ovdialog (aliased as 'afterReveal.ovdialog')
 *    init.ovdialog
 *    afterClose.ovdialog
 *
 *  Simply bind a function to any of these hooks:
 *
 *   $(document).bind('reveal.ovdialog', function() { ...stuff to do after the ovdialog and contents are revealed... })
 *
 */
(function($) {
  $.ovdialog = function(data, klass) {
    $.ovdialog.loading()
    if (data.ajax) fillOvdialogFromAjax(data.ajax, klass)
    else if (data.image) fillOvdialogFromImage(data.image, klass)
    else if (data.div) fillOvdialogFromHref(data.div, klass)
    else if (data.raw) fillOvdialogRaw(data.raw, klass)
    else if ($.isFunction(data)) data.call($)
    else $.ovdialog.reveal(data, klass)
  }

  /*
   * Public, $.ovdialog methods
   */

  $.extend($.ovdialog, {
    settings: {
      title        : '',
      footer       : null, 
      opacity      : 0.2,
      overlay      : true,
      loadingImage : 'loading.gif',
      closeImage   : 'closelabel.png',
      imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ],
      ovdialogHtml  : '\
    <div id="ovdialog" style="display:none;"> \
      <div class="popup"> \
        <div class="head"> \
            <div class="shortcut left"></div> \
            <div class="shortcut right"> \
                <div class="close"></div> \
            </div> \
            <div class="title"></div> \
        </div> \
        <div style="clear:both;"></div> \
        <div class="content"> \
        </div> \
        <div class="footer"> \
        </div> \
      </div> \
    </div>'
    },

    loading: function() {
      init()
      if ($('#ovdialog .loading').length == 1) return true
      showOverlay()

      $('#ovdialog .content').empty()
      $('#ovdialog .body').children().hide().end().
        append('<div class="loading"><img src="'+$.ovdialog.settings.loadingImage+'"/></div>')
    
      if ($.ovdialog.settings.title && $.ovdialog.settings.title.length)
        $('#ovdialog .title').html($.ovdialog.settings.title);
    
      if ($.ovdialog.settings.footer && $.ovdialog.settings.footer.length)
        $('#ovdialog .footer').html($.ovdialog.settings.footer);
    
      $('#ovdialog').css({
        top:	getPageScroll()[1] + (getPageHeight() / 10),
        left:	$(window).width() / 2 - 205
      }).show()

      $(document).bind('keydown.ovdialog', function(e) {
        if (e.keyCode == 27) $.ovdialog.close()
        return true
      })
      $(document).trigger('loading.ovdialog')
    },

    reveal: function(data, klass) {
      $(document).trigger('beforeReveal.ovdialog')
      if (klass) $('#ovdialog .content').addClass(klass)
      $('#ovdialog .content').append(data)
      $('#ovdialog .loading').remove()
      $('#ovdialog .body').children().fadeIn('normal')
      $('#ovdialog').css('left', $(window).width() / 2 - ($('#ovdialog .popup').width() / 2))
      $(document).trigger('reveal.ovdialog').trigger('afterReveal.ovdialog')
    },

    close: function() {
      $(document).trigger('close.ovdialog')
      return false
    },
    
    extwin: function(target, opts) {
        opt_defaults = {
            'id' : '#ovdialog',
            'width' : null,
            'height' : null,
            'title' : null,
            'footer' : null,
            'draggable' : true,
            'resizeable' : true,
            'callback_update' : null
        };
        
        $.ovdialog.extwin.opts = $.extend(opt_defaults, opts);
        
        //define head & footer
        $.ovdialog.settings.title = opts.title;
        $.ovdialog.settings.footer = opts.footer;

        //define content
        $.ovdialog(function() {
            extwin_update(target);
        });

        //set content size
        if (opts.width) {
            opts.width += '';
            if ((opts.width.indexOf('%') < 0) && (opts.width.indexOf('px') < 0)) opts.width += 'px';
            $.ovdialog.extwin.opts.width = opts.width;
            $(opts.id + ' .content').css({width : opts.width});
        }
        if (opts.height) {
            opts.height += '';
            if ((opts.height.indexOf('%') < 0) && (opts.height.indexOf('px') < 0)) opts.height += 'px';
            $.ovdialog.extwin.opts.width = opts.height;
            $(opts.id + ' .content').css({height : opts.height});
        }

        if ($.fn.draggable) {
            $(opts.id).draggable({handle: ".head"});
        }

        /* status experimental
        if ($.fn.resizeable) {
            $('#ovdialog .popup').resizable();
        }
        */
    }
    
  })

  /*
   * Public, $.fn methods
   */

  $.fn.ovdialog = function(settings) {
    if ($(this).length == 0) return

    init(settings)

    function clickHandler() {
      $.ovdialog.loading(true)

      // support for rel="ovdialog.inline_popup" syntax, to add a class
      // also supports deprecated "ovdialog[.inline_popup]" syntax
      var klass = this.rel.match(/ovdialog\[?\.(\w+)\]?/)
      if (klass) klass = klass[1]

      fillOvdialogFromHref(this.href, klass)
      return false
    }

    return this.bind('click.ovdialog', clickHandler)
  }

  /*
   * Private methods
   */

  // called one time to setup ovdialog on this page
  function init(settings) {
    if ($.ovdialog.settings.inited) return true
    else $.ovdialog.settings.inited = true
    
    $(document).trigger('init.ovdialog')
    
    var imageTypes = $.ovdialog.settings.imageTypes.join('|')
    $.ovdialog.settings.imageTypesRegexp = new RegExp('\.(' + imageTypes + ')$', 'i')

    if (settings) $.extend($.ovdialog.settings, settings)
    $('body').append($.ovdialog.settings.ovdialogHtml)

    var preload = [ new Image(), new Image() ]
    preload[0].src = $.ovdialog.settings.closeImage
    preload[1].src = $.ovdialog.settings.loadingImage

    $('#ovdialog').find('.b:first, .bl').each(function() {
      preload.push(new Image())
      preload.slice(-1).src = $(this).css('background-image').replace(/url\((.+)\)/, '$1')
    })

    $('#ovdialog .close').click($.ovdialog.close)
    $('#ovdialog .close_image').attr('src', $.ovdialog.settings.closeImage)
  }

  // getPageScroll() by quirksmode.com
  function getPageScroll() {
    var xScroll, yScroll;
    if (self.pageYOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    } else if (document.documentElement && document.documentElement.scrollTop) {	 // Explorer 6 Strict
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    } else if (document.body) {// all other Explorers
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;
    }
    return new Array(xScroll,yScroll)
  }

  // Adapted from getPageSize() by quirksmode.com
  function getPageHeight() {
    var windowHeight
    if (self.innerHeight) {	// all except Explorer
      windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
      windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
      windowHeight = document.body.clientHeight;
    }
    return windowHeight
  }

  // Figures out what you want to display and displays it
  // formats are:
  //     div: #id
  //   image: blah.extension
  //    ajax: anything else
  function fillOvdialogFromHref(href, klass) {
    // div
    if (href.match(/#/)) {
      var url    = window.location.href.split('#')[0]
      var target = href.replace(url,'')
      if (target == '#') return
      $.ovdialog.reveal($(target).html(), klass)

    // image
    } else if (href.match($.ovdialog.settings.imageTypesRegexp)) {
      fillOvdialogFromImage(href, klass)
    // ajax
    } else {
      fillOvdialogFromAjax(href, klass)
    }
  }

  function fillOvdialogFromImage(href, klass) {
    var image = new Image()
    image.onload = function() {
      $.ovdialog.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass)
    }
    image.src = href
  }

  function fillOvdialogFromAjax(href, klass) {
    $.get(href, function(data) { $.ovdialog.reveal(data, klass) })
  }
  
  function skipOverlay() {
    return $.ovdialog.settings.overlay == false || $.ovdialog.settings.opacity === null
  }

  function showOverlay() {
    if (skipOverlay()) return

    if ($('#ovdialog_overlay').length == 0)
      $("body").append('<div id="ovdialog_overlay" class="ovdialog_hide"></div>')

    $('#ovdialog_overlay').hide().addClass("ovdialog_overlayBG")
      .css('opacity', $.ovdialog.settings.opacity)
      .click(function() { $(document).trigger('close.ovdialog') })
      .fadeIn(200)
    return false
  }

  function hideOverlay() {
    if (skipOverlay()) return

    $('#ovdialog_overlay').fadeOut(200, function(){
      $("#ovdialog_overlay").removeClass("ovdialog_overlayBG")
      $("#ovdialog_overlay").addClass("ovdialog_hide")
      $("#ovdialog_overlay").remove()
    })

    return false
  }
  
  function extwin_update(target, param, send_type) {
    param = param || '';
    send_type = send_type || 'post';
    
    $.ajax({
       url : target,
       data : param,
       type : send_type,
       dataType : 'html',
       success : function (data, textStatus, xhr) {
           div=document.createElement('div');
           div.innerHTML=data;

           $.ovdialog.settings.title = $('#form-head', div).html();
           $('#form-head', div).remove();
           $.ovdialog.settings.footer = $('#form-footer', div).html();
           $('#form-footer', div).remove();

           jQuery.ovdialog(div.innerHTML);
           
           //Submit-Button binden
           $($.ovdialog.extwin.opts.id + ' .footer form input[type=submit]').click(function() {
              submit_name = $(this).attr('name');
              submit_value = $(this).val();
              add_querystring = submit_name + '=' + encodeURIComponent(submit_value);

              extwin_submit($($.ovdialog.extwin.opts.id + ' .content form'), add_querystring);
              return false;
           });

           //Callback ggf. aufrufen
           if ($.ovdialog.extwin.opts.callback_update) $.ovdialog.extwin.opts.callback_update();
       },
       error : function (xhr, textStatus, errorThrown) {
           alert('Error!!!');
       }
    });
  }
  
  function extwin_submit(form, add_querystring) {
       default_method = 'post';
       console.log('start submit');
       param = $(form).serialize();
       target = $(form).attr('action');
       method = $(form).attr('method');

       if (method && method.length) {
           method = method.toLowerCase();
           if (method != 'get' || method != 'post' ) method = default_method;
       }
       else {
           method = default_method;
       }

       if (add_querystring && add_querystring.length) {
            if (param.length)
                param += '&' + add_querystring;
            else 
                param += add_querystring;
       }

       //load data
       extwin_update(target, param, method);
  }
  

  /*
   * Bindings
   */

  $(document).bind('close.ovdialog', function() {
    $(document).unbind('keydown.ovdialog')
    $('#ovdialog').fadeOut(function() {
      $('#ovdialog .content').removeClass().addClass('content')
      $('#ovdialog .loading').remove()
      $(document).trigger('afterClose.ovdialog')
    })
    hideOverlay()
  })

})(jQuery);