/**
 * jQuery gMap
 *
 * @url    http://gmap.nurtext.de/
 * @author  Cedric Kastner <cedric@nur-text.de>
 * @version  1.1.0
 */
(function($)
{
  // Main plugin function
  $.fn.gMap = function(options)
  {
    // Check if the browser is compatible
    if (!window.GBrowserIsCompatible || !GBrowserIsCompatible()) return this;
    
    // Build main options before element iteration
    var opts = $.extend({}, $.fn.gMap.defaults, options);
      
    // Iterate through each element
    return this.each(function()
    {
      // Create map and set initial options
      $gmap = new GMap2(this);
      
      // Create new object to geocode addresses
      $geocoder = new GClientGeocoder();
      
      // Check for address to center on
      if (opts.address)
      { 
        // Get coordinates for given address and center the map
        $geocoder.getLatLng(opts.address, function(gpoint){ $gmap.setCenter(gpoint, opts.zoom); });
        
      }
      else
      {
        // Check for coordinates to center on
        if (opts.latitude && opts.longitude)
        {
          // Center map to coordinates given by option
          $gmap.setCenter(new GLatLng(opts.latitude, opts.longitude), opts.zoom);
          
        }
        else
        {
          // Check for a marker to center on (if no coordinates given)
          if ($.isArray(opts.markers) && opts.markers.length > 0)
          {
            // Check if the marker has an address
            if (opts.markers[0].address)
            {
              // Get the coordinates for given marker address and center
              $geocoder.getLatLng(opts.markers[0].address, function(gpoint){ $gmap.setCenter(gpoint, opts.zoom); });
              
            }
            else
            {
              // Center the map to coordinates given by marker
              $gmap.setCenter(new GLatLng(opts.markers[0].latitude, opts.markers[0].longitude), opts.zoom);
              
            }
            
            
          }
          else
          {
            // Revert back to world view
            $gmap.setCenter(new GLatLng(34.885931, 9.84375), opts.zoom);
            
          }
          
        }
        
      }
            
      // Set the preferred map type
      $gmap.setMapType(opts.maptype);
      
      // Check for map controls
      if (opts.controls.length == 0)
      {
        // Default map controls
        $gmap.setUIToDefault();
        
      }
      else
      {
        // Add custom map controls
        for (var i = 0; i < opts.controls.length; i++)
        {
          // Eval is evil
          eval('$gmap.addControl(new ' + opts.controls[i] + '());');
          
        }
        
      }
            
      // Check if scrollwheel should be enabled
      if (opts.scrollwheel == true && opts.controls.length != 0) { $gmap.enableScrollWheelZoom(); }
                  
      // Loop through marker array
      for (var j = 0; j < opts.markers.length; j++)
      {
        // Get the options from current marker
        marker = opts.markers[j];
                
        // Create new icon
        gicon = new GIcon();
        
        // Set icon properties from global options
        gicon.image = opts.icon.image;
        gicon.shadow = opts.icon.shadow;
        gicon.iconSize = ($.isArray(opts.icon.iconsize)) ? new GSize(opts.icon.iconsize[0], opts.icon.iconsize[1]) : opts.icon.iconsize;
        gicon.shadowSize = ($.isArray(opts.icon.shadowsize)) ? new GSize(opts.icon.shadowsize[0], opts.icon.shadowsize[1]) : opts.icon.shadowsize;
        gicon.iconAnchor = ($.isArray(opts.icon.iconanchor)) ? new GPoint(opts.icon.iconanchor[0], opts.icon.iconanchor[1]) : opts.icon.iconanchor;
        gicon.infoWindowAnchor = ($.isArray(opts.icon.infowindowanchor)) ? new GPoint(opts.icon.infowindowanchor[0], opts.icon.infowindowanchor[1]) : opts.icon.infowindowanchor;
        
        if (marker.icon)
        {
          // Overwrite global options
          gicon.image = marker.icon.image;
          gicon.shadow = marker.icon.shadow;
          gicon.iconSize = ($.isArray(marker.icon.iconsize)) ? new GSize(marker.icon.iconsize[0], marker.icon.iconsize[1]) : marker.icon.iconsize;
          gicon.shadowSize = ($.isArray(marker.icon.shadowsize)) ? new GSize(marker.icon.shadowsize[0], marker.icon.shadowsize[1]) : marker.icon.shadowsize;
          gicon.iconAnchor = ($.isArray(marker.icon.iconanchor)) ? new GPoint(marker.icon.iconanchor[0], marker.icon.iconanchor[1]) : marker.icon.iconanchor;
          gicon.infoWindowAnchor = ($.isArray(marker.icon.infowindowanchor)) ? new GPoint(marker.icon.infowindowanchor[0], marker.icon.infowindowanchor[1]) : marker.icon.infowindowanchor;
          
        }
        
        // Check if address is available
        if (marker.address)
        {
          // Check for reference to the marker's address
          if (marker.html == '_address') { marker.html = marker.address; }
          
          // Get the point for given address
          $geocoder.getLatLng(marker.address, function(gicon, marker)
          {
            // Since we're in a loop, we need a closure when dealing with event handlers, return functions, etc.
            // See <http://www.mennovanslooten.nl/blog/post/62> for more information about closures
            return function(gpoint)
            {
              // Create marker
              gmarker = new GMarker(gpoint, gicon);
              
              // Set HTML and check if info window should be opened
              if (marker.html) { gmarker.bindInfoWindowHtml(opts.html_prepend + marker.html + opts.html_append); }
              if (marker.html && marker.popup) { gmarker.openInfoWindowHtml(opts.html_prepend + marker.html + opts.html_append); }
              
              // Add marker to map
              if (gmarker) { $gmap.addOverlay(gmarker); }
            }
            
          }(gicon, marker));
          
        }
        else
        {
          // Check for reference to the marker's latitude/longitude
          if (marker.html == '_latlng') { marker.html = marker.latitude + ', ' + marker.longitude; }
          
          // Create marker
          gmarker = new GMarker(new GPoint(marker.longitude, marker.latitude), gicon);
          
          // Set HTML and check if info window should be opened
          if (marker.html) { gmarker.bindInfoWindowHtml(opts.html_prepend + marker.html + opts.html_append); }
          if (marker.html && marker.popup) { gmarker.openInfoWindowHtml(opts.html_prepend + marker.html + opts.html_append); }
            
          // Add marker to map
          if (gmarker) { $gmap.addOverlay(gmarker); }
          
        }
        
      }
      
    });
    
  }
    
  // Default settings
  $.fn.gMap.defaults =
  {
    address:        '',
    latitude:        0,
    longitude:        0,
    zoom:          1,
    markers:        [],
    controls:        [],
    scrollwheel:      true,
    //maptype:        G_NORMAL_MAP,
    html_prepend:      '<div class="gmap_marker">',
    html_append:      '</div>',
    icon:
    {
      image:        "http://www.google.com/mapfiles/marker.png",
      shadow:        "http://www.google.com/mapfiles/shadow50.png",
      iconsize:      [20, 34],
      shadowsize:      [37, 34],
      iconanchor:      [9, 34],
      infowindowanchor:  [9, 2]
      
    }
    
  }
  
})(jQuery);