/*
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(_1, _2) { this._map = _1; this._mapMarkers = []; this._iconBounds = []; this._clusterMarkers = []; this._eventListeners = []; if (typeof (_2) === "undefined") { _2 = {}; } this.borderPadding = (_2.borderPadding) ? _2.borderPadding : 256; this.clusteringEnabled = (_2.clusteringEnabled === false) ? false : true; if (_2.clusterMarkerClick) { this.clusterMarkerClick = _2.clusterMarkerClick; } if (_2.clusterMarkerIcon) { this.clusterMarkerIcon = _2.clusterMarkerIcon; } else { this.clusterMarkerIcon = new GIcon(); this.clusterMarkerIcon.image = "http://maps.google.com/mapfiles/arrow.png"; this.clusterMarkerIcon.iconSize = new GSize(39, 34); this.clusterMarkerIcon.iconAnchor = new GPoint(9, 31); this.clusterMarkerIcon.infoWindowAnchor = new GPoint(9, 31); this.clusterMarkerIcon.shadow = "http://www.google.com/intl/en_us/mapfiles/arrowshadow.png"; this.clusterMarkerIcon.shadowSize = new GSize(39, 34); } this.clusterMarkerTitle = (_2.clusterMarkerTitle) ? _2.clusterMarkerTitle : "Click to zoom in and see %count markers"; if (_2.fitMapMaxZoom) { this.fitMapMaxZoom = _2.fitMapMaxZoom; } this.intersectPadding = (_2.intersectPadding) ? _2.intersectPadding : 0; if (_2.markers) { this.addMarkers(_2.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(_3) { var i; if (!_3[0]) { var _5 = []; for (i in _3) { _5.push(_3[i]); } _3 = _5; } for (i = _3.length - 1; i >= 0; i--) { _3[i]._isVisible = false; _3[i]._isActive = false; _3[i]._makeVisible = false; } this._mapMarkers = this._mapMarkers.concat(_3); }; ClusterMarker.prototype._clusterMarker = function(_6) { function $newClusterMarker(_7, _8, _9) { return new GMarker(_7, { icon: _8, title: _9 }); }; var _a = new GLatLngBounds(), i, _c, _d = [], _e, _f = this, _10 = this._mapMarkers; for (i = _6.length - 1; i >= 0; i--) { _e = _10[_6[i]]; _e.index = _6[i]; _a.extend(_e.getLatLng()); _d.push(_e); } _c = $newClusterMarker(_a.getCenter(), this.clusterMarkerIcon, this.clusterMarkerTitle.replace(/%count/gi, _6.length)); _c.clusterGroupBounds = _a; this._eventListeners.push(GEvent.addListener(_c, "click", function() { _f.clusterMarkerClick({ clusterMarker: _c, clusteredMarkers: _d }); })); _c._childIndexes = _6; for (i = _6.length - 1; i >= 0; i--) { _10[_6[i]]._parentCluster = _c; } return _c; }; ClusterMarker.prototype.clusterMarkerClick = function(_11) { this._map.setCenter(_11.clusterMarker.getLatLng(), this._map.getBoundsZoomLevel(_11.clusterMarker.clusterGroupBounds)); }; ClusterMarker.prototype._filterActiveMapMarkers = function() { var _12 = this.borderPadding, _13 = this._map.getZoom(), _14 = this._map.getCurrentMapType().getProjection(), _15, _16, _17, _18, _19, _1a, _1b = this._map.getBounds(), i, _1d, _1e = [], _1f, _20 = this._mapMarkers, _21 = this._iconBounds; if (_12) { _15 = _14.fromLatLngToPixel(_1b.getSouthWest(), _13); _16 = new GPoint(_15.x - _12, _15.y + _12); _17 = _14.fromPixelToLatLng(_16, _13); _18 = _14.fromLatLngToPixel(_1b.getNorthEast(), _13); _19 = new GPoint(_18.x + _12, _18.y - _12); _1a = _14.fromPixelToLatLng(_19, _13); _1b.extend(_17); _1b.extend(_1a); } this._activeMarkersChanged = false; if (typeof (_21[_13]) === "undefined") { this._iconBounds[_13] = []; this._activeMarkersChanged = true; for (i = _20.length - 1; i >= 0; i--) { _1d = _20[i]; _1d._isActive = _1b.containsLatLng(_1d.getLatLng()) ? true : false; _1d._makeVisible = _1d._isActive; if (_1d._isActive) { _1e.push(i); } } } else { for (i = _20.length - 1; i >= 0; i--) { _1d = _20[i]; _1f = _1d._isActive; _1d._isActive = _1b.containsLatLng(_1d.getLatLng()) ? true : false; _1d._makeVisible = _1d._isActive; if (!this._activeMarkersChanged && _1f !== _1d._isActive) { this._activeMarkersChanged = true; } if (_1d._isActive && typeof (_21[_13][i]) === "undefined") { _1e.push(i); } } } return _1e; }; ClusterMarker.prototype._filterIntersectingMapMarkers = function() { var _22, i, j, _25 = this._map.getZoom(), _26 = this._mapMarkers, _27 = this._iconBounds; for (i = _26.length - 1; i > 0; i--) { if (_26[i]._makeVisible) { _22 = []; for (j = i - 1; j >= 0; j--) { if (_26[j]._makeVisible && _27[_25][i].intersects(_27[_25][j])) { _22.push(j); } } if (_22.length !== 0) { _22.push(i); for (j = _22.length - 1; j >= 0; j--) { _26[_22[j]]._makeVisible = false; } this._clusterMarkers.push(this._clusterMarker(_22)); } } } }; ClusterMarker.prototype.fitMapToMarkers = function() { var _28 = this._mapMarkers, _29 = new GLatLngBounds(), i; for (i = _28.length - 1; i >= 0; i--) { _29.extend(_28[i].getLatLng()); } var _2b = this._map.getBoundsZoomLevel(_29); if (this.fitMapMaxZoom && _2b > this.fitMapMaxZoom) { _2b = this.fitMapMaxZoom; } this._map.setCenter(_29.getCenter(), _2b); 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(_2c, _2d) { var _2e = this._map.getCurrentMapType().getProjection(), i, _30, _31, _32, _33, _34, _35, _36, _37, _38 = this.intersectPadding, _39 = this._mapMarkers; for (i = _2c.length - 1; i >= 0; i--) { _30 = _39[_2c[i]]; _31 = _30.getIcon().iconSize; _32 = _2e.fromLatLngToPixel(_30.getLatLng(), _2d); _33 = _30.getIcon().iconAnchor; _34 = new GPoint(_32.x - _33.x - _38, _32.y - _33.y + _31.height + _38); _35 = new GPoint(_32.x - _33.x + _31.width + _38, _32.y - _33.y - _38); _36 = _2e.fromPixelToLatLng(_34, _2d); _37 = _2e.fromPixelToLatLng(_35, _2d); this._iconBounds[_2d][_2c[i]] = new GLatLngBounds(_36, _37); } }; ClusterMarker.prototype.refresh = function(_3a) { var i, _3c, _3d = this._map.getZoom(), _3e = this._filterActiveMapMarkers(); if (this._activeMarkersChanged || _3a) { this._removeClusterMarkers(); if (this.clusteringEnabled && _3d < this._map.getCurrentMapType().getMaximumResolution()) { if (_3e.length > 0) { this._preCacheIconBounds(_3e, _3d); } 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--) { _3c = this._mapMarkers[i]; if (!_3c._isVisible && _3c._makeVisible) { this._map.addOverlay(_3c); _3c._isVisible = true; } if (_3c._isVisible && !_3c._makeVisible) { this._map.removeOverlay(_3c); _3c._isVisible = false; } } } }; ClusterMarker.prototype._removeClusterMarkers = function() { var i, j, _41 = this._map, _42 = this._eventListeners, _43 = this._clusterMarkers, _44, _45 = this._mapMarkers; for (i = _43.length - 1; i >= 0; i--) { _44 = _43[i]._childIndexes; for (j = _44.length - 1; j >= 0; j--) { delete _45[_44[j]]._parentCluster; } _41.removeOverlay(_43[i]); } for (i = _42.length - 1; i >= 0; i--) { GEvent.removeListener(_42[i]); } this._clusterMarkers = []; this._eventListeners = []; }; ClusterMarker.prototype.removeMarkers = function() { var i, _47 = this._mapMarkers, _48 = this._map; for (i = _47.length - 1; i >= 0; i--) { if (_47[i]._isVisible) { _48.removeOverlay(_47[i]); } delete _47[i]._isVisible; delete _47[i]._isActive; delete _47[i]._makeVisible; } this._removeClusterMarkers(); this._mapMarkers = []; this._iconBounds = []; }; ClusterMarker.prototype.triggerClick = function(_49) { var _4a = this._mapMarkers[_49]; if (_4a._isVisible) { GEvent.trigger(_4a, "click"); } else { if (_4a._isActive) { var _4b = _4a._parentCluster._childIndexes, _4c = true, _4d, i, _4f = this._map.getZoom(), _50, _51 = this._iconBounds, _52 = this._map.getCurrentMapType().getMaximumResolution(); while (_4c && _4f < _52) { _4c = false; _4f++; if (typeof (_51[_4f]) === "undefined") { _51[_4f] = []; this._preCacheIconBounds(_4b, _4f); } else { _4d = []; for (i = _4b.length - 1; i >= 0; i--) { if (typeof (_51[_4f][_4b[i]]) === "undefined") { _4d.push(_4b[i]); } } if (_4d.length >= 1) { this._preCacheIconBounds(_4d, _4f); } } for (i = _4b.length - 1; i >= 0; i--) { _50 = _4b[i]; if (_50 !== _49 && _51[_4f][_50].intersects(_51[_4f][_49])) { _4c = true; break; } } } this._map.setCenter(_4a.getLatLng(), _4f); this.triggerClick(_49); } else { this._map.setCenter(_4a.getLatLng()); this.triggerClick(_49); } } }; ClusterMarker.prototype._zoomEnd = function() { this._cancelMoveEnd = true; this.refresh(true); };