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/*
* Copyright 2016 Anton Tananaev (anton@traccar.org)
*
* 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.
*/
package org.traccar.manager;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ApplicationInfo;
import android.content.res.AssetManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.annotation.Nullable;
import android.support.v4.content.LocalBroadcastManager;
import android.view.View;
import android.webkit.JavascriptInterface;
import android.webkit.MimeTypeMap;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebResourceResponse;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.WebViewFragment;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.util.HashMap;
import java.util.Map;
public class MainFragment extends WebViewFragment {
public final static String EVENT_LOGIN = "eventLogin";
public final static String EVENT_TOKEN = "eventToken";
public final static String KEY_TOKEN = "keyToken";
private final static int REQUEST_FILE_CHOOSER = 1;
private AssetManager assetManager;
private LocalBroadcastManager broadcastManager;
public class AppInterface {
@JavascriptInterface
public void postMessage(String message) {
if (message.contains("login")) {
broadcastManager.sendBroadcast(new Intent(EVENT_LOGIN));
}
}
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
assetManager = getActivity().getAssets();
broadcastManager = LocalBroadcastManager.getInstance(getActivity());
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
if ((getActivity().getApplicationInfo().flags &= ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
WebView.setWebContentsDebuggingEnabled(true);
}
}
getWebView().setWebViewClient(webViewClient);
getWebView().setWebChromeClient(webChromeClient);
getWebView().addJavascriptInterface(new AppInterface(), "appInterface");
WebSettings webSettings = getWebView().getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
webSettings.setDatabaseEnabled(true);
webSettings.setMediaPlaybackRequiresUserGesture(false);
String url = PreferenceManager.getDefaultSharedPreferences(
getActivity()).getString(MainActivity.PREFERENCE_URL, null);
getWebView().loadUrl(url);
}
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String token = intent.getStringExtra(KEY_TOKEN);
String code = "updateNotificationToken && updateNotificationToken('" + token + "')";
getWebView().evaluateJavascript(code, null);
}
};
@Override
public void onStart() {
super.onStart();
IntentFilter intentFilter = new IntentFilter(EVENT_TOKEN);
broadcastManager.registerReceiver(broadcastReceiver, intentFilter);
}
@Override
public void onStop() {
super.onStop();
broadcastManager.unregisterReceiver(broadcastReceiver);
}
public String getMimeType(String url) {
String extension = MimeTypeMap.getFileExtensionFromUrl(url);
if (extension != null) {
switch (extension) {
case "js":
return "text/javascript";
case "woff":
return "application/font-woff";
case "woff2":
return "application/font-woff2";
case "ttf":
return "application/x-font-ttf";
case "eot":
return "application/vnd.ms-fontobject";
case "svg":
return "image/svg+xml";
default:
return MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
}
}
return null;
}
public WebResourceResponse loadFileFromAssets(String url, String file) throws IOException {
String mimeType = getMimeType(url);
String encoding = "UTF-8";
InputStream inputStream = assetManager.open(file);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
int statusCode = HttpURLConnection.HTTP_OK;
String reasonPhase = "OK";
Map<String, String> responseHeaders = new HashMap<>();
responseHeaders.put("Access-Control-Allow-Origin", "*");
return new WebResourceResponse(mimeType, encoding, statusCode, reasonPhase, responseHeaders, inputStream);
} else {
return new WebResourceResponse(mimeType, encoding, inputStream);
}
}
private WebViewClient webViewClient = new WebViewClient() {
@SuppressWarnings("deprecation")
@Override
public WebResourceResponse shouldInterceptRequest(WebView view, String url) {
Uri uri = Uri.parse(url);
String host = uri.getHost();
if (host != null && host.equals("cdnjs.cloudflare.com")) {
String path = uri.getPath().substring("/ajax/libs".length());
try {
return loadFileFromAssets(url, "cdnjs" + path);
} catch (IOException e) {
return null;
}
}
return null;
}
};
private ValueCallback<Uri> openFileCallback;
private ValueCallback<Uri[]> openFileCallback2;
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_FILE_CHOOSER) {
Uri result = data == null || resultCode != Activity.RESULT_OK ? null : data.getData();
if (openFileCallback != null) {
openFileCallback.onReceiveValue(result);
openFileCallback = null;
}
if (openFileCallback2 != null) {
openFileCallback2.onReceiveValue(result != null ? new Uri[] { result } : new Uri[0]);
openFileCallback2 = null;
}
}
}
private WebChromeClient webChromeClient = new WebChromeClient() {
// Android 3.0+
public void openFileChooser(ValueCallback uploadMessage, String acceptType) {
openFileChooser(uploadMessage);
}
// Android 4.1+
protected void openFileChooser(ValueCallback<Uri> uploadMessage, String acceptType, String capture) {
openFileChooser(uploadMessage);
}
protected void openFileChooser(ValueCallback<Uri> uploadMessage) {
MainFragment.this.openFileCallback = uploadMessage;
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("*/*");
startActivityForResult(Intent.createChooser(intent, getString(R.string.file_browser)), REQUEST_FILE_CHOOSER);
}
// Android 5.0+
public boolean onShowFileChooser(WebView mWebView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
if (openFileCallback2 != null) {
openFileCallback2.onReceiveValue(null);
openFileCallback2 = null;
}
openFileCallback2 = filePathCallback;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Intent intent = fileChooserParams.createIntent();
try {
startActivityForResult(intent, REQUEST_FILE_CHOOSER);
} catch (ActivityNotFoundException e) {
openFileCallback2 = null;
return false;
}
}
return true;
}
};
}
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