de.tudresden.inf.rn.mobilis.groups.overlays.GroupsOverlay.java Source code

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Here is the source code for de.tudresden.inf.rn.mobilis.groups.overlays.GroupsOverlay.java

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/*******************************************************************************
 * Copyright (C) 2010 Technische Universitt Dresden
 * 
 * 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.
 * 
 * Dresden, University of Technology, Faculty of Computer Science
 * Computer Networks Group: http://www.rn.inf.tu-dresden.de
 * mobilis project: http://mobilisplatform.sourceforge.net
 ******************************************************************************/
package de.tudresden.inf.rn.mobilis.groups.overlays;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.preference.PreferenceManager;
import android.text.Html;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
import com.google.gson.Gson;

import de.tudresden.inf.rn.mobilis.groups.R;
import de.tudresden.inf.rn.mobilis.groups.R.drawable;
import de.tudresden.inf.rn.mobilis.groups.R.id;
import de.tudresden.inf.rn.mobilis.groups.R.layout;
import de.tudresden.inf.rn.mobilis.groups.activities.GroupCreateActivity;
import de.tudresden.inf.rn.mobilis.groups.activities.GroupInfoActivity;
import de.tudresden.inf.rn.mobilis.groups.activities.MainActivity;
import de.tudresden.inf.rn.mobilis.xmpp.beans.groups.GroupItemInfo;

/**
 * 
 * @author Robert Lbke
 *
 */
public class GroupsOverlay extends ItemizedOverlay<OverlayItem> {

    /** The TAG for the Log. */
    private final static String TAG = "GroupsOverlay";

    private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>();
    private ArrayList<GroupItemInfo> groupItemInfos;
    private MainActivity mainActivity;
    public boolean success = false;

    public GroupsOverlay(MainActivity mainActivity, ArrayList<GroupItemInfo> groupItemsToShowOnMap) {
        super(boundCenterBottom(mainActivity.getResources().getDrawable(R.drawable.group_marker_35)));
        Log.i(TAG, "Konstruktor GroupsOverlay");
        this.mainActivity = mainActivity;
        this.updateAllOverlayItems(groupItemsToShowOnMap);
    }

    public void addOverlayItem(OverlayItem overlay) {
        mOverlays.add(overlay);
        populate();
    }

    @Override
    protected OverlayItem createItem(int i) {
        return mOverlays.get(i);
    }

    @Override
    public int size() {
        return mOverlays.size();
    }

    public void updateAllOverlayItems(ArrayList<GroupItemInfo> items) {
        if (items != null) {
            this.groupItemInfos = items;
            mOverlays.clear();
            ArrayList<OverlayItem> newItems = new ArrayList<OverlayItem>();

            for (GroupItemInfo gii : items) {
                OverlayItem oi = new OverlayItem(new GeoPoint(gii.latitudeE6, gii.longitudeE6), gii.name,
                        "groupID=" + gii.groupId);
                newItems.add(oi);
            }

            mOverlays = (ArrayList<OverlayItem>) newItems.clone();

            //Log.i(TAG,"updateAllOverlayItems(). new size:"+mOverlays.size());
            setLastFocusedIndex(-1);
            populate();
        }
    }

    @Override
    protected boolean onTap(int index) {
        OverlayItem item = mOverlays.get(index);
        GroupItemInfo gii = groupItemInfos.get(index);

        LayoutInflater inflater = (LayoutInflater) mainActivity
                .getSystemService(mainActivity.LAYOUT_INFLATER_SERVICE);
        View layout = inflater.inflate(R.layout.groups_details_dialog,
                (ViewGroup) mainActivity.findViewById(R.id.groups_details_layout_root));

        TextView text = (TextView) layout.findViewById(R.id.groups_details_text);
        text.setText(Html.fromHtml("<b>Latitude:</b> " + gii.latitudeE6 / 1E6 + "<br><b>Longitude:</b> "
                + gii.longitudeE6 / 1E6 + "<br><b>Number of Members:</b> " + gii.memberCount));

        //Prepare the Intent for creating a group at this foursquare venue
        final Intent i = new Intent(mainActivity.getApplicationContext(), GroupInfoActivity.class);
        i.putExtra("group_id", gii.groupId);

        String title = gii.name;
        if (title == null || title.equals(""))
            title = " ";
        AlertDialog.Builder builder = new AlertDialog.Builder(mainActivity);
        builder.setTitle(title).setView(layout).setIcon(R.drawable.group_marker_24).setCancelable(true)
                .setPositiveButton("Details", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        mainActivity.startActivity(i);
                    }
                }).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        dialog.cancel();
                    }
                });
        builder.show();
        return true;
    }

}