LocationSearcherGroup.java

package net.coding.program.maopao;

import android.content.Context;

import com.baidu.mapapi.model.LatLng;

import net.coding.program.model.LocationObject;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

/**
 * Created by Neutra on 2015/3/12.
 */
public class LocationSearcherGroup {
    private PublicLocationSearcher publicSearcher;
    private PrivateLocationSearcher privateSearcher;
    private LocationSearcher.SearchResultListener listener;
    private LocationSearcher.SearchResultListener itemListener = new PublicLocationSearcher.SearchResultListener() {
        @Override
        public void onSearchResult(List<LocationObject> locations) {
            if (locations != null) resultBuffer.addAll(locations);
            if (!isSearching()) {
                // onSearchResult后可能立刻会重新搜索， 所以要输出的列表放到另一个对象中
                List<LocationObject> temp = new ArrayList<>(resultBuffer);
                resultBuffer.clear();
                Collections.sort(temp, new Comparator<LocationObject>() {
                    @Override
                    public int compare(LocationObject lhs, LocationObject rhs) {
                        return lhs.distance - rhs.distance;
                    }
                });
                listener.onSearchResult(temp);
            }
        }
    };

    private List<LocationObject> resultBuffer = new ArrayList<>();

    public LocationSearcherGroup(String keyword) {
        if (keyword == null) throw new IllegalArgumentException("keywords");
        publicSearcher = new PublicLocationSearcher();
        publicSearcher.setKeyword(keyword);
        privateSearcher = new PrivateLocationSearcher();
        privateSearcher.setKeyword("");
    }

    public LocationSearcherGroup() {
        publicSearcher = new PublicLocationSearcher();
        privateSearcher = new PrivateLocationSearcher();
    }

    public synchronized void destory() {
        resultBuffer.clear();
        privateSearcher.destory();
        publicSearcher.destory();
    }

    public synchronized void configure(Context context, LatLng latLng, final PublicLocationSearcher.SearchResultListener listener) {
        this.listener = listener;
        privateSearcher.configure(context, latLng, itemListener);
        publicSearcher.configure(context, latLng, itemListener);
    }

    public synchronized void search() {
        if (listener == null) return;
        if (isSearching()) return;
        resultBuffer.clear();
        privateSearcher.search();
        publicSearcher.search();
    }

    public synchronized boolean isSearching() {
        return publicSearcher.isSearching() || privateSearcher.isSearching();
    }

    public synchronized boolean isComplete() {
        return publicSearcher.isComplete() && privateSearcher.isComplete();
    }

    public synchronized void setKeyword(String keyword) {
        publicSearcher.setKeyword(keyword);
        privateSearcher.setKeyword(keyword);
    }

    public String getKeyword() {
        return privateSearcher.getKeyword();
    }

    public boolean isKeywordEmpty() {
        return privateSearcher.isKeywordEmpty();
    }
}