source: other-projects/tipple-android/trunk/src/org/mapsforge/android/maps/ArrayItemizedOverlayTweaked.java@ 23977

package org.mapsforge.android.maps;

import java.util.ArrayList;
import java.util.Collection;

import android.app.AlertDialog;
import android.content.Context;
import android.graphics.drawable.Drawable;

/**
 * Thread-safe implementation of the {@link ItemizedOverlay} class using an {@link ArrayList} as
 * internal data structure.
 */
public class ArrayItemizedOverlayTweaked extends ItemizedOverlay<OverlayItem> {
    private static final int ARRAY_LIST_INITIAL_CAPACITY = 8;
    private static final String THREAD_NAME = "ArrayItemizedOverlayTweaked";

    protected final Context context;
    protected AlertDialog.Builder dialog;
    protected OverlayItem item;
    protected final ArrayList<OverlayItem> overlayItems;

    /**
     * Constructs a new ArrayItemizedOverlay.
     * 
     * @param defaultMarker
     *            the default marker.
     * @param context
     *            the reference to the application context.
     */
    public ArrayItemizedOverlayTweaked(Drawable defaultMarker, Context context) {
        super(boundCenterBottom(defaultMarker));
        this.context = context;
        this.overlayItems = new ArrayList<OverlayItem>(ARRAY_LIST_INITIAL_CAPACITY);
    }

    /**
     * Adds the given item to the Overlay.
     * 
     * @param overlayItem
     *            the item that should be added to the Overlay.
     */
    public synchronized void addOverlay(OverlayItem overlayItem) {
        this.overlayItems.add(overlayItem);
        populate();
    }

    /**
     * Adds all items of the given collection to the Overlay.
     * 
     * @param c
     *            collection whose items should be added to the Overlay.
     */
    public synchronized void addOverlays(Collection<? extends OverlayItem> c) {
        this.overlayItems.addAll(c);
        populate();
    }

    /**
     * Removes all items from the Overlay.
     */
    public synchronized void clear() {
        this.overlayItems.clear();
        populate();
    }

    @Override
    public String getThreadName() {
        return THREAD_NAME;
    }

    /**
     * Removes the given item from the Overlay.
     * 
     * @param overlayItem
     *            the item that should be removed from the Overlay.
     */
    public synchronized void removeOverlay(OverlayItem overlayItem) {
        this.overlayItems.remove(overlayItem);
        populate();
        super.requestRedraw();
    }

    @Override
    public synchronized int size() {
        return this.overlayItems.size();
    }

    @Override
    public synchronized OverlayItem createItem(int i) {
        return this.overlayItems.get(i);
    }

    @Override
    protected synchronized boolean onTap(int index) {
        this.item = this.overlayItems.get(index);
        this.dialog = new AlertDialog.Builder(this.context);
        this.dialog.setTitle(this.item.getTitle());
        this.dialog.setMessage(this.item.getSnippet());
        this.dialog.show();
        return true;
    }

}