1 files changed, 108 insertions, 0 deletions
diff --git a/navit/android/src/org/navitproject/navit/NavitTraff.java b/navit/android/src/org/navitproject/navit/NavitTraff.java
new file mode 100644
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+++ b/navit/android/src/org/navitproject/navit/NavitTraff.java
@@ -0,0 +1,108 @@
+/**
+ * Navit, a modular navigation system.
+ * Copyright (C) 2005-2018 Navit Team
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA.
+ */
+
+package org.navitproject.navit;
+
+import android.Manifest;
+import android.content.BroadcastReceiver;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.util.Log;
+
+import java.util.List;
+
+/**
+ * @brief The TraFF receiver implementation.
+ *
+ * This class registers the broadcast receiver for TraFF feeds, polls all registered sources once on creation, receives
+ * TraFF feeds and forwards them to the traffic module for processing.
+ */
+public class NavitTraff extends BroadcastReceiver {
+    public static String ACTION_TRAFF_FEED = "org.traffxml.traff.FEED";
+
+    public static String ACTION_TRAFF_POLL = "org.traffxml.traff.POLL";
+
+    public static String EXTRA_FEED = "feed";
+
+    /** Identifier for the callback function. */
+    private int cbid;
+
+    private Context context = null;
+
+    /** An intent filter for TraFF events. */
+    private IntentFilter traffFilter = new IntentFilter();
+
+    /**
+     * @brief Forwards a newly received TraFF feed to the traffic module for processing.
+     *
+     * This is called when a TraFF feed is received.
+     *
+     * @param id The identifier for the native callback implementation
+     * @param feed The TraFF feed
+     */
+    public native void onFeedReceived(int id, String feed);
+
+    /**
+     * @brief Creates a new {@code NavitTraff} instance.
+     *
+     * Creating a new {@code NavitTraff} instance registers a broadcast receiver for TraFF broadcasts and polls all
+     * registered sources once to ensure we have messages which were received by these sources before we started up.
+     *
+     * @param context The context
+     * @param cbid The callback identifier for the native method to call upon receiving a feed
+     */
+    NavitTraff(Context context, int cbid) {
+        this.context = context;
+        this.cbid = cbid;
+
+        traffFilter.addAction(ACTION_TRAFF_FEED);
+        traffFilter.addAction(ACTION_TRAFF_POLL);
+
+        context.registerReceiver(this, traffFilter);
+        /* TODO unregister receiver on exit */
+
+        /* Broadcast a poll intent */
+        Intent outIntent = new Intent(ACTION_TRAFF_POLL);
+        PackageManager pm = context.getPackageManager();
+        List<ResolveInfo> receivers = pm.queryBroadcastReceivers(outIntent, 0);
+        if (receivers != null)
+            for (ResolveInfo receiver : receivers) {
+                ComponentName cn = new ComponentName(receiver.activityInfo.applicationInfo.packageName,
+                        receiver.activityInfo.name);
+                outIntent = new Intent(ACTION_TRAFF_POLL);
+                outIntent.setComponent(cn);
+                context.sendBroadcast(outIntent, Manifest.permission.ACCESS_COARSE_LOCATION);
+            }
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if ((intent != null) && (intent.getAction().equals(ACTION_TRAFF_FEED))) {
+            String feed = intent.getStringExtra(EXTRA_FEED);
+            if (feed == null)
+                Log.w(this.getClass().getSimpleName(), "empty feed, ignoring");
+            else
+                onFeedReceived(cbid, feed);
+        }
+    }
+}