我正在尝试使用 OverlayView for Google Maps API 弄清楚如果您已经打开了一个地图标记，并且您尝试打开另一个标记，它会自动关闭打开的标记，因此实际上只有一个标记打开一次，等等。这是我目前已经拥有的js代码：
var GMap = (function() {
var that = {};
that.map = null;
that.center = new google.maps.LatLng(33.7856030000,-84.4090570000);
that.map_type = google.maps.MapTypeId.ROADMAP;
that.markers = {};
that.windows = {};
that.bounds = new google.maps.LatLngBounds();
that.use_bounds = false;
that.watch_click = false;
that.zoom = 10;
that.addCityMarker = function(opts) {
that.markers[opts.id] = that.standardMarker(opts);
var myLatlng = that.markers[opts.id].getPosition();
google.maps.event.addListener(that.markers[opts.id], "click", function(e) {
that.windows[opts.id] = new InfoBox({
data: opts,
latlng: myLatlng,
map: that.map,
type: 'city'
});
});
google.maps.event.trigger(that.markers[opts.id], "click");
if(that.use_bounds == true) {
that.bounds.extend(myLatlng);
}
};
that.addCityMarkers = function(data) {
for(var i in data) {
if(data[i]) {
that.addCityMarker(data[i]);
}
}
};
that.addCommunityMarker = function(opts) {
if(!that.markers[opts.data.id]) {
that.markers[opts.data.id] = that.standardMarker(opts);
var myLatlng = that.markers[opts.data.id].getPosition();
google.maps.event.addListener(that.markers[opts.data.id], "click", function(e) {
that.windows[opts.data.id] = new InfoBox({
data: opts.data,
latlng: myLatlng,
map: that.map,
type: 'community'
});
});
google.maps.event.trigger(that.markers[opts.data.id], "click");
if(that.use_bounds == true) {
that.bounds.extend(myLatlng);
}
} else {
console.log('skipped adding duplicate community window to map');
}
};
that.addCommunityMarkers = function(data) {
for(var i in data) {
if(data[i]) {
GMap.addCommunityMarker(data[i]);
}
}
};
that.finish = function() {
if(that.use_bounds == true) {
that.map.fitBounds(that.bounds);
}
};
that.standardMarker = function(opts) {
var icon = new google.maps.MarkerImage(
'/images/map/trans.png',
new google.maps.Size(1,1),
new google.maps.Point(0,0),
new google.maps.Point(0,0)
);
var shadow = new google.maps.MarkerImage(
'/images/map/trans.png',
new google.maps.Size(1,1),
new google.maps.Point(0,0),
new google.maps.Point(0,0)
);
var marker = new google.maps.Marker({
icon: icon,
position: new google.maps.LatLng(opts.lat,opts.lng),
map: that.map,
shadow: shadow
});
return marker;
}
that.triggerMarker = function(id) {
if(that.windows[id]) {
that.map.setCenter(that.markers[id].getPosition());
if(!$('#info_window_'+id).hasClass('open')) {
$('#info_window_'+id+' a.expand').trigger('click');
}
} else {
console.log('no marker for: '+id);
}
};
that.resize = function() {
google.maps.event.trigger(that.map, 'resize');
if(that.use_bounds == true) {
that.map.fitBounds(that.bounds);
} else {
that.map.setCenter(that.center);
}
};
that.initialize = function() {
var latlng = that.center;
var myOptions = {
center: latlng,
navigationControl: true,
mapTypeControl: false,
navigationControlOptions: {
style: google.maps.NavigationControlStyle.LARGE
},
mapTypeId: that.map_type,
panControlOptions: {
position: google.maps.ControlPosition.LEFT_BOTTOM
},
scrollwheel: false,
zoom: that.zoom,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.LARGE,
position: google.maps.ControlPosition.LEFT_BOTTOM
}
};
that.map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
};
return that;
})();
function InfoBox(opts) {
google.maps.OverlayView.call(this);
this.data_ = opts.data;
this.type_ = opts.type;
this.latlng_ = opts.latlng;
this.map_ = opts.map;
var me = this;
this.setMap(this.map_);
}
InfoBox.prototype = new google.maps.OverlayView();
InfoBox.prototype.draw = function() {
// Creates the element if it doesn't exist already.
if(this.type_ == 'community') {
this.createElement();
if (!this.div_) return;
var pixPosition = this.getProjection().fromLatLngToDivPixel(this.latlng_);
if (!pixPosition) return;
// Now position our DIV based on the DIV coordinates of our bounds
if(this.div_.hasClass('open')) {
this.div_.css('left', (pixPosition.x + -36) + "px");
this.div_.css('top', (pixPosition.y + -158) + "px");
} else {
this.div_.css('left', (pixPosition.x + -36) + "px");
this.div_.css('top', (pixPosition.y + -85) + "px");
}
this.div_.css('display', 'block');
} else if(this.type_ == 'city') {
this.createCityElement();
if (!this.div_) return;
var pixPosition = this.getProjection().fromLatLngToDivPixel(this.latlng_);
if (!pixPosition) return;
// Now position our DIV based on the DIV coordinates of our bounds
this.div_.css('left', (pixPosition.x + -38) + "px");
this.div_.css('top', (pixPosition.y + -38) + "px");
this.div_.css('display', 'block');
}
};
InfoBox.prototype.createElement = function() {
var me = this;
var panes = this.getPanes();
var div = this.div_;
var data = this.data_;
if (!div) {
div = this.div_ = $('<div class="map_info_window" id="info_window_'+data.id+'">'
+'<a href="#" class="expand">Expand</a>'
+'<div class="info_window_content">'
+'<div class="thumb"><img src="'+data.image+'" title="'+data.title+'" /></div>'
+'<div class="info_window_data">'
+'<p class="title">'+data.title+'</p>'
+'<p class="desc">'+data.propInfo+'</p>'
+'<a href="http://'+data.link+'" target="_blank" class="view">View Community</a>'
+'</div>'
+'</div>'
+'</div>');
$('a.expand, .thumb', div).click(function(e) {
e.preventDefault();
var pixPosition = me.getProjection().fromLatLngToDivPixel(me.latlng_);
div.toggleClass('open');
if(div.hasClass('open')) {
div.css('top', (pixPosition.y + -158) + "px");
div.css('z-index', 20);
setTimeout(function() {
$('.info_window_data', div).show('slide', {direction: 'left'}, 300);
}, 100);
} else {
div.css('top', (pixPosition.y + -85) + "px");
div.css('z-index', 10);
$('.info_window_data', div).hide();
}
});
div.css('display', 'none');
$(panes.floatPane).append(div);
}
}
InfoBox.prototype.createCityElement = function() {
var me = this;
var panes = this.getPanes();
var div = this.div_;
var data = this.data_;
if (!div) {
div = this.div_ = $('<div class="map_city_window">'
+'<a href="/find/where?query='+data.name+'">'+data.name+'</a>'
+'<div class="arrow">arrow</div>'
+'</div>');
div.css('display', 'none');
$(panes.floatPane).append(div);
}
};
我不确定如何将该功能集成到此代码中，但如果有人能给我一些指示，我将不胜感激。我正在使用的地图的一个非常相似的例子是这样的，如果它可以作为参考点：
http://gables.com/find/where?query=Washington%20DC
在此先感谢您的帮助。