Android Open Source - smartnavi Info Window

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Back to project page smartnavi.

License

The source code is released under:

Apache License

Java Source Code

package org.osmdroid.bonuspack.overlays;
//from w  w w .  j a  v  a 2 s.  c  o m
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapView;

import java.util.ArrayList;

/**
 * View that can be displayed on an OSMDroid map, associated to a GeoPoint.
 * Typical usage: cartoon-like bubbles displayed when clicking an overlay item.
 * It mimics the InfoWindow class of Google Maps JavaScript API V3.
 * Main differences are:
 * <ul>
 * <li>Structure and content of the view is let to the responsibility of the caller. </li>
 * <li>The same InfoWindow can be associated to many items. </li>
 * </ul>
 * <p/>
 * This is an abstract class.
 *
 * @author M.Kergall
 * @see MarkerInfoWindow
 */
public abstract class InfoWindow {

    protected View mView;
    protected boolean mIsVisible;
    protected MapView mMapView;

    /**
     * @param layoutResId the id of the view resource.
     * @param mapView     the mapview on which is hooked the view
     */
    public InfoWindow(int layoutResId, MapView mapView) {
        mMapView = mapView;
        mIsVisible = false;
        ViewGroup parent = (ViewGroup) mapView.getParent();
        Context context = mapView.getContext();
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        mView = inflater.inflate(layoutResId, parent, false);
        mView.setTag(this);
    }

    /**
     * close all InfoWindows currently opened on this MapView
     */
    static public void closeAllInfoWindowsOn(MapView mapView) {
        ArrayList<InfoWindow> opened = getOpenedInfoWindowsOn(mapView);
        for (InfoWindow infoWindow : opened) {
            infoWindow.close();
        }
    }

    /**
     * return all InfoWindows currently opened on this MapView
     */
    static public ArrayList<InfoWindow> getOpenedInfoWindowsOn(MapView mapView) {
        int count = mapView.getChildCount();
        ArrayList<InfoWindow> opened = new ArrayList<InfoWindow>(count);
        for (int i = 0; i < count; i++) {
            final View child = mapView.getChildAt(i);
            Object tag = child.getTag();
            if (tag != null && tag instanceof InfoWindow) {
                InfoWindow infoWindow = (InfoWindow) tag;
                opened.add(infoWindow);
            }
        }
        return opened;
    }

    /**
     * Returns the Android view. This allows to set its content.
     *
     * @return the Android view
     */
    public View getView() {
        return (mView);
    }

    /**
     * open the InfoWindow at the specified GeoPosition + offset.
     * If it was already opened, close it before reopening.
     *
     * @param object   the graphical object on which is hooked the view
     * @param position to place the window on the map
     * @param offsetX  (&offsetY) the offset of the view to the position, in pixels.
     *                 This allows to offset the view from the object position.
     */
    public void open(Object object, GeoPoint position, int offsetX, int offsetY) {
        close(); //if it was already opened
        onOpen(object);
        MapView.LayoutParams lp = new MapView.LayoutParams(
                MapView.LayoutParams.WRAP_CONTENT,
                MapView.LayoutParams.WRAP_CONTENT,
                position, MapView.LayoutParams.BOTTOM_CENTER,
                offsetX, offsetY);
        mMapView.addView(mView, lp);
        mIsVisible = true;
    }

    public void close() {
        if (mIsVisible) {
            mIsVisible = false;
            ((ViewGroup) mView.getParent()).removeView(mView);
            onClose();
        }
    }

    public boolean isOpen() {
        return mIsVisible;
    }

    //Abstract methods to implement in sub-classes:
    public abstract void onOpen(Object item);

    public abstract void onClose();

}

Java Source Code List

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