/**
 * 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);