您可以在不删除事件侦听器的情况下将其禁用吗？

Question

由于google maps v3不支持多边形或折线的开始或结束编辑，因此我正在尝试构建自己的多边形或折线。

我正在为每个点绘制标记，然后为了完成编辑，我将所有标记设置为在第一个索引点("0")被单击时隐藏，然后将多边形设置为clickable为true。但是用户仍然可以单击地图并继续绘制多边形。我想禁用该事件侦听器，但在鼠标悬停时重新启用它。这可以做到吗？如果我使用Remove Listener，我可以在鼠标悬停时将另一个listener重新附加到多边形上，以便他们可以编辑它吗？

MapShaper.Feature.prototype.poly = function(type) {
    var color = MapShaper.getColor(false),
    path = new google.maps.MVCArray,
    poly,
    self = this,
    el = type + "_b";

    if(type=="shape"){
        poly = self.createShape( {strokeWeight: 3, fillColor: color}, path );
    }else if(type=="line"){
        poly = self.createLine( {strokeWeight: 3, strokeColor: color }, path );
    }

    poly.markers = new google.maps.MVCArray; 

    google.maps.event.addListener(poly, "mouseover", function(){    
        poly.markers.forEach(function(polyMarker, index){
            polyMarker.setVisible(true);
        });
    });

MapShaper.Feature.prototype.createShape = function(opts, path) {
    var poly;
    poly = new google.maps.Polygon({
        clickable:false,
        strokeWeight: opts.strokeWeight,
        fillColor: opts.fillColor
    });
    poly.setPaths(new google.maps.MVCArray([path]));
    return poly;
}

MapShaper.Feature.prototype.createShape = function(opts, path) {
    var poly;
    poly = new google.maps.Polygon({
        clickable:false,
        strokeWeight: opts.strokeWeight,
        fillColor: opts.fillColor
    });
    poly.setPaths(new google.maps.MVCArray([path]));
    return poly;
}


        google.maps.event.addListener(marker, 'click', function() {
            if (!marker.index == 0) {
                marker.setMap(null);
                markers.removeAt(marker.index);
                path.removeAt(marker.index);
                MapShaper.reindex(markers);             
                if(markers.getLength() == 0){
                    MapShaper.removeFeature(poly.id);
                }
            } else {
                markers.forEach(function(marker, index) {
                    marker.setVisible(false)
                });
                poly.setOptions({clickable: true});
            }
        });

Answer 1

您可以对全局变量执行几乎相同的操作，如下所示：(并设置disableListener =true以禁用它)

var disableListener = false;
google.maps.event.addListener(marker, 'click', function() {
    if (disableListener)
        return;
    if (!marker.index == 0)
        marker.setMap(null);
}