Introduce a new map provider API which enables not to know maps at compile-time

app/src/main/java/mobi/maptrek/MapTrek.java

@@ -314,8 +314,7 @@ public Index getMapIndex() {
     public MapIndex getExtraMapIndex() {
         if (mExtraMapIndex == null) {
             mExtraMapIndex = new MapIndex(this, getExternalFilesDir("maps"));
-            mExtraMapIndex.initializeOfflineMapProviders();
-            mExtraMapIndex.initializeOnlineMapProviders();
+            mExtraMapIndex.initializePluginMapProviders();
         }
         return mExtraMapIndex;
     }

app/src/main/java/mobi/maptrek/maps/MapIndex.java

@@ -18,9 +18,7 @@
 
 import android.annotation.SuppressLint;
 import android.content.Context;
-import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
@@ -43,10 +41,9 @@
 import java.util.List;
 import java.util.Objects;
 
-import mobi.maptrek.maps.offline.OfflineTileSource;
-import mobi.maptrek.maps.offline.OfflineTileSourceFactory;
-import mobi.maptrek.maps.online.OnlineTileSource;
-import mobi.maptrek.maps.online.OnlineTileSourceFactory;
+import mobi.maptrek.maps.plugin.PluginOfflineTileSource;
+import mobi.maptrek.maps.plugin.PluginOnlineTileSource;
+import mobi.maptrek.maps.plugin.PluginTileSourceFactory;
 import mobi.maptrek.util.FileList;
 import mobi.maptrek.util.MapFilenameFilter;
 
@@ -58,10 +55,12 @@ public class MapIndex implements Serializable {
 
     private final Context mContext;
     private final HashSet<MapFile> mMaps;
+    private final PluginTileSourceFactory mPluginTileSourceFactory;
 
     @SuppressLint("UseSparseArrays")
     public MapIndex(@NonNull Context context, @Nullable File root) {
         mContext = context;
+        mPluginTileSourceFactory = new PluginTileSourceFactory(context, context.getPackageManager());
         mMaps = new HashSet<>();
         if (root != null) {
             logger.debug("MapIndex({})", root.getAbsolutePath());
@@ -118,58 +117,26 @@ private void loadMap(@NonNull File file) {
         mMaps.add(mapFile);
     }
 
-    public void initializeOnlineMapProviders() {
-        PackageManager packageManager = mContext.getPackageManager();
-
-        Intent initializationIntent = new Intent("mobi.maptrek.maps.online.provider.action.INITIALIZE");
-        // enumerate online map providers
-        List<ResolveInfo> providers = packageManager.queryBroadcastReceivers(initializationIntent, 0);
-        for (ResolveInfo provider : providers) {
-            // send initialization broadcast, we send it directly instead of sending
-            // one broadcast for all plugins to wake up stopped plugins:
-            // http://developer.android.com/about/versions/android-3.1.html#launchcontrols
-            Intent intent = new Intent();
-            intent.setClassName(provider.activityInfo.packageName, provider.activityInfo.name);
-            intent.setAction(initializationIntent.getAction());
-            mContext.sendBroadcast(intent);
-
-            List<OnlineTileSource> tileSources = OnlineTileSourceFactory.fromPlugin(mContext, packageManager, provider);
-            for (OnlineTileSource tileSource : tileSources) {
-                MapFile mapFile = new MapFile(tileSource.getName(), tileSource.getUri());
-                mapFile.tileSource = tileSource;
-                mapFile.boundingBox = WORLD_BOUNDING_BOX;
-                //TODO Implement tile cache expiration
-                //tileProvider.tileExpiration = onlineMapTileExpiration;
-                mMaps.add(mapFile);
-            }
+    public void initializePluginMapProviders() {
+        for (PluginOnlineTileSource source : mPluginTileSourceFactory.getOnlineTileSources()) {
+            addTileSource(source, source.getSourceId());
         }
-    }
 
-    public void initializeOfflineMapProviders() {
-        PackageManager packageManager = mContext.getPackageManager();
-
-        Intent initializationIntent = new Intent("mobi.maptrek.maps.offline.provider.action.INITIALIZE");
-        // enumerate offline map providers
-        List<ResolveInfo> providers = packageManager.queryBroadcastReceivers(initializationIntent, 0);
-        for (ResolveInfo provider : providers) {
-            // send initialization broadcast, we send it directly instead of sending
-            // one broadcast for all plugins to wake up stopped plugins:
-            // http://developer.android.com/about/versions/android-3.1.html#launchcontrols
-            Intent intent = new Intent();
-            intent.setClassName(provider.activityInfo.packageName, provider.activityInfo.name);
-            intent.setAction(initializationIntent.getAction());
-            mContext.sendBroadcast(intent);
-
-            List<OfflineTileSource> tileSources = OfflineTileSourceFactory.fromPlugin(mContext, packageManager, provider);
-            for (OfflineTileSource tileSource : tileSources) {
-                MapFile mapFile = new MapFile(tileSource.getName(), tileSource.getUri());
-                mapFile.tileSource = tileSource;
-                mapFile.boundingBox = WORLD_BOUNDING_BOX;
-                mMaps.add(mapFile);
-            }
+        for (PluginOfflineTileSource source : mPluginTileSourceFactory.getOfflineTileSources()) {
+            addTileSource(source, source.getSourceId());
         }
     }
 
+    private void addTileSource(TileSource tileSource, String id) {
+        MapFile mapFile = new MapFile(tileSource.getName(), id);
+        mapFile.tileSource = tileSource;
+        mapFile.boundingBox = WORLD_BOUNDING_BOX;
+        //TODO Implement tile cache expiration
+        //tileProvider.tileExpiration = onlineMapTileExpiration;
+
+        mMaps.add(mapFile);
+    }
+
     @NonNull
     public ArrayList<MapFile> getMaps(@Nullable String[] ids) {
         ArrayList<MapFile> maps = new ArrayList<>();