/*
	ClusterMarker Version 1.3.2
	
	A marker manager for the Google Maps API
	http://googlemapsapi.martinpearman.co.uk/clustermarker
	
	Copyright Martin Pearman 2008
	Last updated 29th September 2008

	This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

	You should have received a copy of the GNU General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>.
	
*/

function ClusterMarker($map, $options) {
    this._idioma = "E";
	this._map=$map;
	this._mapMarkers=[];
	this._iconBounds=[];
	this._clusterMarkers=[];
	this._eventListeners=[];
	if(typeof($options)==='undefined'){
		$options={};
	}
	this.borderPadding=($options.borderPadding)?$options.borderPadding:256;
	this.clusteringEnabled = ($options.clusteringEnabled === false) ? false : true;
	if ($options.idioma) {
	    this._idioma = $options.idioma;
	}
	if($options.clusterMarkerClick){
		this.clusterMarkerClick=$options.clusterMarkerClick;
	}
	if($options.clusterMarkerIcon){
	    this.clusterMarkerIcon = $options.clusterMarkerIcon;
	    this.clusterMarkerIcon2 = $options.clusterMarkerIcon;
	}else{
		this.clusterMarkerIcon=new GIcon();
		this.clusterMarkerIcon.image='TurgaliciaGoogleMaps/images/cluster.png';
		this.clusterMarkerIcon.iconSize=new GSize(21, 21);
		this.clusterMarkerIcon.iconAnchor=new GPoint(10, 10);
		this.clusterMarkerIcon.infoWindowAnchor=new GPoint(9, 21);
		this.clusterMarkerIcon.shadow = 'TurgaliciaGoogleMaps/images/clustershadow.png';
		this.clusterMarkerIcon.shadowSize = new GSize(21, 21);

		this.clusterMarkerIcon2 = new GIcon();
		this.clusterMarkerIcon2.image = 'TurgaliciaGoogleMaps/images/cluster2.png';
		this.clusterMarkerIcon2.iconSize = new GSize(21, 21);
		this.clusterMarkerIcon2.iconAnchor = new GPoint(10, 10);
		this.clusterMarkerIcon2.infoWindowAnchor = new GPoint(9, 21);
		this.clusterMarkerIcon2.shadow = 'TurgaliciaGoogleMaps/images/cluster2shadow.png';
		this.clusterMarkerIcon2.shadowSize = new GSize(21, 21);
	}
	this.clusterMarkerTitle=($options.clusterMarkerTitle)?$options.clusterMarkerTitle:'Click to zoom in and see %count markers';
	if($options.fitMapMaxZoom){
		this.fitMapMaxZoom=$options.fitMapMaxZoom;
	}
	this.intersectPadding=($options.intersectPadding)?$options.intersectPadding:0;
	if($options.markers){
		this.addMarkers($options.markers);
	}
	GEvent.bind(this._map, 'moveend', this, this._moveEnd);
	GEvent.bind(this._map, 'zoomend', this, this._zoomEnd);
	GEvent.bind(this._map, 'maptypechanged', this, this._mapTypeChanged);
}

ClusterMarker.prototype.addMarkers=function($markers){
	var i;
	if(!$markers[0]){
		//	assume $markers is an associative array and convert to a numerically indexed array
		var $numArray=[];
		for(i in $markers){
			$numArray.push($markers[i]);
		}
		$markers=$numArray;
	}
	for(i=$markers.length-1; i>=0; i--){
		$markers[i]._isVisible=false;
		$markers[i]._isActive=false;
		$markers[i]._makeVisible=false;
	}
	this._mapMarkers=this._mapMarkers.concat($markers);
};

ClusterMarker.prototype._clusterMarker = function($clusterGroupIndexes) {
    function $newClusterMarker($location, $icon, $title) {
        return new GMarker($location, { icon: $icon, title: $title });
    }
    var $clusterGroupBounds = new GLatLngBounds(), i, $clusterMarker, $clusteredMarkers = [], $marker, $this = this, $mapMarkers = this._mapMarkers;
    for (i = $clusterGroupIndexes.length - 1; i >= 0; i--) {
        $marker = $mapMarkers[$clusterGroupIndexes[i]];
        $marker.index = $clusterGroupIndexes[i];
        $clusterGroupBounds.extend($marker.getLatLng());
        $clusteredMarkers.push($marker);
    }
    
    // ANTES
    //$clusterMarker = $newClusterMarker($clusterGroupBounds.getCenter(), this.clusterMarkerIcon, this.clusterMarkerTitle.replace(/%count/gi, $clusterGroupIndexes.length));

    // AHORA
    
    $icono = this.clusterMarkerIcon;
    if (this._map.getZoom() >= this._map.getCurrentMapType().getMaximumResolution()) {
        $icono = this.clusterMarkerIcon2;
    }
    $clusterMarker = $newClusterMarker($clusterGroupBounds.getCenter(), $icono, this.clusterMarkerTitle.replace(/%count/gi, $clusterGroupIndexes.length));

    
    $clusterMarker.clusterGroupBounds = $clusterGroupBounds; //	only req'd for default cluster marker click action
    this._eventListeners.push(GEvent.addListener($clusterMarker, 'click', function() {
        $this.clusterMarkerClick({ clusterMarker: $clusterMarker, clusteredMarkers: $clusteredMarkers });
    }));
    $clusterMarker._childIndexes = $clusterGroupIndexes;
    for (i = $clusterGroupIndexes.length - 1; i >= 0; i--) {
        $mapMarkers[$clusterGroupIndexes[i]]._parentCluster = $clusterMarker;
    }
    return $clusterMarker;
};

ClusterMarker.prototype.clusterMarkerClick = function($args) {
    //Antes
    //this._map.setCenter($args.clusterMarker.getLatLng(), this._map.getBoundsZoomLevel($args.clusterMarker.clusterGroupBounds));

    //Ahora
    $zoomLevel = this._map.getZoom();
    if ($zoomLevel >= this._map.getCurrentMapType().getMaximumResolution()) {
        var $clusterGroupIndexes = $args.clusterMarker._childIndexes, $mapMarkers = this._mapMarkers, $idioma = this._idioma;
        var $html = '<div style="overflow-y:auto;max-height:150px;width:190px;position:relative;top:0px;height:auto;margin-right:10px;"><table width="180">';
        for (i = $clusterGroupIndexes.length - 1; i >= 0; i--) {
            $marker = $mapMarkers[$clusterGroupIndexes[i]];
            $html += '<tr>';
            $html += '<td width="20"><img height="18px" width="18px" src="TurgaliciaGoogleMaps/images/' + $marker.tipo + '.png" /></td>';
            $html += '<td class="td_georesultados"><a href="ficha_datos.asp?crec=' + $marker.id + '&cidi=' + $idioma + '" target="_blank">' + $marker.name + '</a></td>';
            $html += '</tr></div>';
        }
        $html += '</table>';
        if (typeof document.body.style.maxHeight == "undefined") {

            if ($clusterGroupIndexes.length > 10) {
                $html = $html.replace('height:auto;', 'height:150px;');
            }
        }
        $args.clusterMarker.openInfoWindowHtml($html);
    }
    else {
        this._map.setCenter($args.clusterMarker.getLatLng(), this._map.getBoundsZoomLevel($args.clusterMarker.clusterGroupBounds));
    }





};

ClusterMarker.prototype._filterActiveMapMarkers=function(){
	var $borderPadding=this.borderPadding, $mapZoomLevel=this._map.getZoom(), $mapProjection=this._map.getCurrentMapType().getProjection(), $mapPointSw, $activeAreaPointSw, $activeAreaLatLngSw, $mapPointNe, $activeAreaPointNe, $activeAreaLatLngNe, $activeAreaBounds=this._map.getBounds(), i, $marker, $uncachedIconBoundsIndexes=[], $oldState, $mapMarkers=this._mapMarkers, $iconBounds=this._iconBounds;
	if($borderPadding){
		$mapPointSw=$mapProjection.fromLatLngToPixel($activeAreaBounds.getSouthWest(), $mapZoomLevel);
		$activeAreaPointSw=new GPoint($mapPointSw.x-$borderPadding, $mapPointSw.y+$borderPadding);
		$activeAreaLatLngSw=$mapProjection.fromPixelToLatLng($activeAreaPointSw, $mapZoomLevel);
		$mapPointNe=$mapProjection.fromLatLngToPixel($activeAreaBounds.getNorthEast(), $mapZoomLevel);
		$activeAreaPointNe=new GPoint($mapPointNe.x+$borderPadding, $mapPointNe.y-$borderPadding);
		$activeAreaLatLngNe=$mapProjection.fromPixelToLatLng($activeAreaPointNe, $mapZoomLevel);
		$activeAreaBounds.extend($activeAreaLatLngSw);
		$activeAreaBounds.extend($activeAreaLatLngNe);
	}
	this._activeMarkersChanged=false;
	if(typeof($iconBounds[$mapZoomLevel])==='undefined'){
		//	no iconBounds cached for this zoom level
		//	no need to check for existence of individual iconBounds elements
		this._iconBounds[$mapZoomLevel]=[];
		this._activeMarkersChanged=true;	//	force refresh(true) as zoomed to uncached zoom level
		for(i=$mapMarkers.length-1; i>=0; i--){
			$marker=$mapMarkers[i];
			$marker._isActive=$activeAreaBounds.containsLatLng($marker.getLatLng())?true:false;
			$marker._makeVisible=$marker._isActive;
			if($marker._isActive){
				$uncachedIconBoundsIndexes.push(i);
			}
		}
	}else{
		//	icondBounds array exists for this zoom level
		//	check for existence of individual iconBounds elements
		for(i=$mapMarkers.length-1; i>=0; i--){
			$marker=$mapMarkers[i];
			$oldState=$marker._isActive;
			$marker._isActive=$activeAreaBounds.containsLatLng($marker.getLatLng())?true:false;
			$marker._makeVisible=$marker._isActive;
			if(!this._activeMarkersChanged && $oldState!==$marker._isActive){
				this._activeMarkersChanged=true;
			}
			if($marker._isActive && typeof($iconBounds[$mapZoomLevel][i])==='undefined'){
				$uncachedIconBoundsIndexes.push(i);
			}
		}
	}
	return $uncachedIconBoundsIndexes;
};

ClusterMarker.prototype._filterIntersectingMapMarkers=function(){
	var $clusterGroup, i, j, $mapZoomLevel=this._map.getZoom(), $mapMarkers=this._mapMarkers, $iconBounds=this._iconBounds;
	for(i=$mapMarkers.length-1; i>0; i--)
	{
		if($mapMarkers[i]._makeVisible){
			$clusterGroup=[];
			for(j=i-1; j>=0; j--){
				if($mapMarkers[j]._makeVisible && $iconBounds[$mapZoomLevel][i].intersects($iconBounds[$mapZoomLevel][j])){
					$clusterGroup.push(j);
				}
			}
			if($clusterGroup.length!==0){
				$clusterGroup.push(i);
				for(j=$clusterGroup.length-1; j>=0; j--){
					$mapMarkers[$clusterGroup[j]]._makeVisible=false;
				}
				this._clusterMarkers.push(this._clusterMarker($clusterGroup));
			}
		}
	}
};

ClusterMarker.prototype.fitMapToMarkers=function(){
	var $mapMarkers=this._mapMarkers, $markersBounds=new GLatLngBounds(), i;
	for(i=$mapMarkers.length-1; i>=0; i--){
		$markersBounds.extend($mapMarkers[i].getLatLng());
	}
	var $fitMapToMarkersZoom=this._map.getBoundsZoomLevel($markersBounds);
		
	if(this.fitMapMaxZoom && $fitMapToMarkersZoom>this.fitMapMaxZoom){
		$fitMapToMarkersZoom=this.fitMapMaxZoom;
	}
	this._map.setCenter($markersBounds.getCenter(), $fitMapToMarkersZoom);
	this.refresh();
};

ClusterMarker.prototype._mapTypeChanged=function(){
	this.refresh(true);
};

ClusterMarker.prototype._moveEnd=function(){
	if(!this._cancelMoveEnd){
		this.refresh();
	}else{
		this._cancelMoveEnd=false;
	}
};

ClusterMarker.prototype._preCacheIconBounds=function($indexes, $mapZoomLevel){
	var $mapProjection=this._map.getCurrentMapType().getProjection(), i, $marker, $iconSize, $iconAnchorPoint, $iconAnchorPointOffset, $iconBoundsPointSw, $iconBoundsPointNe, $iconBoundsLatLngSw, $iconBoundsLatLngNe, $intersectPadding=this.intersectPadding, $mapMarkers=this._mapMarkers;
	for(i=$indexes.length-1; i>=0; i--){
		$marker=$mapMarkers[$indexes[i]];
		$iconSize=$marker.getIcon().iconSize;
		$iconAnchorPoint=$mapProjection.fromLatLngToPixel($marker.getLatLng(), $mapZoomLevel);
		$iconAnchorPointOffset=$marker.getIcon().iconAnchor;
		$iconBoundsPointSw=new GPoint($iconAnchorPoint.x-$iconAnchorPointOffset.x-$intersectPadding, $iconAnchorPoint.y-$iconAnchorPointOffset.y+$iconSize.height+$intersectPadding);
		$iconBoundsPointNe=new GPoint($iconAnchorPoint.x-$iconAnchorPointOffset.x+$iconSize.width+$intersectPadding, $iconAnchorPoint.y-$iconAnchorPointOffset.y-$intersectPadding);
		$iconBoundsLatLngSw=$mapProjection.fromPixelToLatLng($iconBoundsPointSw, $mapZoomLevel);
		$iconBoundsLatLngNe=$mapProjection.fromPixelToLatLng($iconBoundsPointNe, $mapZoomLevel);
		this._iconBounds[$mapZoomLevel][$indexes[i]]=new GLatLngBounds($iconBoundsLatLngSw, $iconBoundsLatLngNe);
	}
};

ClusterMarker.prototype.refresh=function($forceFullRefresh){
	var i, $marker, $zoomLevel=this._map.getZoom(), $uncachedIconBoundsIndexes=this._filterActiveMapMarkers();
	if(this._activeMarkersChanged || $forceFullRefresh){
		this._removeClusterMarkers();
		// Antes
		//if(this.clusteringEnabled && $zoomLevel<this._map.getCurrentMapType().getMaximumResolution()){
		if (this.clusteringEnabled) {
			if($uncachedIconBoundsIndexes.length>0){
				this._preCacheIconBounds($uncachedIconBoundsIndexes, $zoomLevel);
			}
			this._filterIntersectingMapMarkers();
		}
		for(i=this._clusterMarkers.length-1; i>=0; i--){
			this._map.addOverlay(this._clusterMarkers[i]);
		}
		for(i=this._mapMarkers.length-1; i>=0; i--){
			$marker=this._mapMarkers[i];
			if(!$marker._isVisible && $marker._makeVisible){
				this._map.addOverlay($marker);
				$marker._isVisible=true;
			}
			if($marker._isVisible && !$marker._makeVisible){
				this._map.removeOverlay($marker);
				$marker._isVisible=false;
			}
		}
	}
};

ClusterMarker.prototype._removeClusterMarkers=function(){
	var i, j, $map=this._map, $eventListeners=this._eventListeners, $clusterMarkers=this._clusterMarkers, $childIndexes, $mapMarkers=this._mapMarkers;
	for(i=$clusterMarkers.length-1; i>=0; i--){
		$childIndexes=$clusterMarkers[i]._childIndexes;
		for(j=$childIndexes.length-1; j>=0; j--){
			delete $mapMarkers[$childIndexes[j]]._parentCluster;
		}
		$map.removeOverlay($clusterMarkers[i]);
	}
	for(i=$eventListeners.length-1; i>=0; i--){
		GEvent.removeListener($eventListeners[i]);
	}
	this._clusterMarkers=[];
	this._eventListeners=[];
};

ClusterMarker.prototype.removeMarkers=function(){
	var i, $mapMarkers=this._mapMarkers, $map=this._map;
	for(i=$mapMarkers.length-1; i>=0; i--){
		if($mapMarkers[i]._isVisible){
			$map.removeOverlay($mapMarkers[i]);
		}
		delete $mapMarkers[i]._isVisible;
		delete $mapMarkers[i]._isActive;
		delete $mapMarkers[i]._makeVisible;
	}
	this._removeClusterMarkers();
	this._mapMarkers=[];
	this._iconBounds=[];
};

//Eptisa TI, método para eliminar eliminar un conjunto de markers
ClusterMarker.prototype.deleteMarkers = function($delMarkers) {
    var i, $mapMarkers = this._mapMarkers, $map = this._map;
    var auxMarkers = [];
    for (i = $mapMarkers.length - 1; i >= 0; i--) {
        $mapMarkers[i]._isDeleted = false;
        for (j = $delMarkers.length - 1; j >= 0; j--) {
            if ($mapMarkers[i] == $delMarkers[j]) {
                $mapMarkers[i]._isDeleted = true;
            }
        }
        if ($mapMarkers[i]._isDeleted == false) {
            auxMarkers.push($mapMarkers[i]);
        }
    }
    this.removeMarkers();
    this.addMarkers(auxMarkers);
    this.refresh();
};


ClusterMarker.prototype.triggerClick=function($index){
	var $marker=this._mapMarkers[$index];
	if($marker._isVisible){
		//	$marker is visible
		GEvent.trigger($marker, 'click');
	}
	else if($marker._isActive){
		//	$marker is clustered
		var $clusteredMarkersIndexes=$marker._parentCluster._childIndexes, $intersectDetected=true, $uncachedIconBoundsIndexes, i, $mapZoomLevel=this._map.getZoom(), $clusteredMarkerIndex, $iconBounds=this._iconBounds, $mapMaxZoomLevel=this._map.getCurrentMapType().getMaximumResolution();
		//Antes
		//while($intersectDetected && $mapZoomLevel<$mapMaxZoomLevel){
		while ($intersectDetected) {
			$intersectDetected=false;
			$mapZoomLevel++;
			if(typeof($iconBounds[$mapZoomLevel])==='undefined'){
				//	no iconBounds cached for this zoom level
				//	no need to check for existence of individual iconBounds elements
				$iconBounds[$mapZoomLevel]=[];
				// need to create cache for all clustered markers at $mapZoomLevel
				this._preCacheIconBounds($clusteredMarkersIndexes, $mapZoomLevel);
			}else{
				//	iconBounds array exists for this zoom level
				//	check for existence of individual iconBounds elements
				$uncachedIconBoundsIndexes=[];
				for(i=$clusteredMarkersIndexes.length-1; i>=0; i--){
					if(typeof($iconBounds[$mapZoomLevel][$clusteredMarkersIndexes[i]])==='undefined'){
						$uncachedIconBoundsIndexes.push($clusteredMarkersIndexes[i]);
					}
				}
				if($uncachedIconBoundsIndexes.length>=1){
					this._preCacheIconBounds($uncachedIconBoundsIndexes, $mapZoomLevel);
				}
			}
			for(i=$clusteredMarkersIndexes.length-1; i>=0; i--){
				$clusteredMarkerIndex=$clusteredMarkersIndexes[i];
				if($clusteredMarkerIndex!==$index && $iconBounds[$mapZoomLevel][$clusteredMarkerIndex].intersects($iconBounds[$mapZoomLevel][$index])){	
					$intersectDetected=true;
					break;
				}
			}
			
		};
		this._map.setCenter($marker.getLatLng(), $mapZoomLevel);
		this.triggerClick($index);
	}else{
		// $marker is not within active area (map bounds + border padding)
		this._map.setCenter($marker.getLatLng());
		this.triggerClick($index);
	}
};

ClusterMarker.prototype._zoomEnd=function(){
	this._cancelMoveEnd=true;
	this.refresh(true);
};