org.mariotaku.twidere.fragment.WebMapFragment.java Source code

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Here is the source code for org.mariotaku.twidere.fragment.WebMapFragment.java

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/*
 *            Twidere - Twitter client for Android
 * 
 * Copyright (C) 2012 Mariotaku Lee <mariotaku.lee@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.mariotaku.twidere.fragment;

import org.mariotaku.twidere.util.MapInterface;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;

public class WebMapFragment extends WebViewFragment implements MapInterface {

    private final Uri mUri = Uri.parse("file:///android_asset/mapview.html");

    private double latitude, longitude;

    @Override
    public void center() {
        final WebView webview = getWebView();
        webview.loadUrl("javascript:center();");
    }

    @Override
    public void onActivityCreated(final Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        getLocation();
        setupWebView();
    }

    /**
     * The Location Manager manages location providers. This code searches for
     * the best provider of data (GPS, WiFi/cell phone tower lookup, some other
     * mechanism) and finds the last known location.
     **/
    private void getLocation() {
        final Bundle bundle = getArguments();
        if (bundle != null) {
            latitude = bundle.getDouble(INTENT_KEY_LATITUDE, 0.0);
            longitude = bundle.getDouble(INTENT_KEY_LONGITUDE, 0.0);
        }
    }

    /** Sets up the WebView object and loads the URL of the page **/
    private void setupWebView() {

        final WebView webview = getWebView();
        webview.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
        setWebViewClient(new MapWebViewClient(getActivity()));
        loadUrl(mUri.toString());

        final WebSettings settings = webview.getSettings();
        settings.setBuiltInZoomControls(false);

        /** Allows JavaScript calls to access application resources **/
        webview.addJavascriptInterface(new JavaScriptInterface(), "android");

    }

    /**
     * Sets up the interface for getting access to Latitude and Longitude data
     * from device
     **/
    class JavaScriptInterface {

        public double getLatitude() {
            return latitude;
        }

        public double getLongitude() {
            return longitude;
        }

    }

    class MapWebViewClient extends DefaultWebViewClient {

        public MapWebViewClient(final FragmentActivity activity) {
            super(activity);
        }

        @Override
        public boolean shouldOverrideUrlLoading(final WebView view, final String url) {
            final Uri uri = Uri.parse(url);
            if (uri.getScheme().equals(mUri.getScheme()))
                return false;

            final Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
            startActivity(intent);
            return true;
        }
    }

}