PolygonManager.java

/*
 * Copyright (C) 2013 Maciej Górski
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.androidmapsextensions.impl;

import com.androidmapsextensions.GoogleMap.OnPolygonClickListener;
import com.androidmapsextensions.Polygon;
import com.androidmapsextensions.PolygonOptions;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

class PolygonManager {

    private final IGoogleMap factory;

    private final Map<com.google.android.gms.maps.model.Polygon, Polygon> polygons;

    public PolygonManager(IGoogleMap factory) {
        this.factory = factory;
        this.polygons = new HashMap<>();
    }

    public Polygon addPolygon(PolygonOptions polygonOptions) {
        Polygon polygon = createPolygon(polygonOptions.real);
        polygon.setData(polygonOptions.getData());
        return polygon;
    }

    private Polygon createPolygon(com.google.android.gms.maps.model.PolygonOptions polygonOptions) {
        com.google.android.gms.maps.model.Polygon real = factory.addPolygon(polygonOptions);
        Polygon polygon = new DelegatingPolygon(real, this);
        polygons.put(real, polygon);
        return polygon;
    }

    public void clear() {
        polygons.clear();
    }

    public List<Polygon> getPolygons() {
        return new ArrayList<Polygon>(polygons.values());
    }

    public void onRemove(com.google.android.gms.maps.model.Polygon real) {
        polygons.remove(real);
    }

    public void setOnPolygonClickListener(OnPolygonClickListener onPolygonClickListener) {
        com.google.android.gms.maps.GoogleMap.OnPolygonClickListener realOnPolygonClickListener = null;
        if (onPolygonClickListener != null) {
            realOnPolygonClickListener = new DelegatingOnPolygonClickListener(onPolygonClickListener);
        }
        factory.setOnPolygonClickListener(realOnPolygonClickListener);
    }

    private class DelegatingOnPolygonClickListener implements com.google.android.gms.maps.GoogleMap.OnPolygonClickListener {

        private final OnPolygonClickListener onPolygonClickListener;

        public DelegatingOnPolygonClickListener(OnPolygonClickListener onPolygonClickListener) {
            this.onPolygonClickListener = onPolygonClickListener;
        }

        @Override
        public void onPolygonClick(com.google.android.gms.maps.model.Polygon polygon) {
            onPolygonClickListener.onPolygonClick(polygons.get(polygon));
        }
    }
}