Pull API Key (#448)

* Add ApiKeyChangeListener interface

* migrate RouterHttpHandler to pull api key

* Migrate SearchHttpHandler to pull api key

* Rm TmpHttpHandler class

* Update map api key when updates in MapzenManager

* better listener api

core/src/main/java/com/mapzen/android/core/ApiKeyChangeListener.java

@@ -0,0 +1,12 @@
+package com.mapzen.android.core;
+
+/**
+ * Listener for handling changes to API key.
+ */
+public interface ApiKeyChangeListener {
+  /**
+   * Called when the {@link MapzenManager}'s API key is changed.
+   * @param apiKey the current API key
+   */
+  void onApiKeyChanged(String apiKey);
+}

core/src/main/java/com/mapzen/android/core/CoreAndroidModule.java

@@ -62,7 +62,7 @@
    * Provide initializer for configuring {@link com.mapzen.android.search.MapzenSearch} objects.
    * @return
    */
-  @Provides @Singleton public SearchInitializer provideSearchInitializer() {
-    return new SearchInitializer();
+  @Provides @Singleton public SearchInitializer provideSearchInitializer(Context context) {
+    return new SearchInitializer(context);
   }
 }

core/src/main/java/com/mapzen/android/core/MapzenManager.java

@@ -5,6 +5,11 @@
 import android.content.Context;
 import android.content.res.Resources;
 
+import java.lang.ref.WeakReference;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
 /**
  * {@code MapzenManager} assists with Mapzen API key management. When created it reads the API key
  * set in string resources if one has been declared by the application.
@@ -33,6 +38,8 @@ public class MapzenManager {
 
   static MapzenManager instance;
 
+  private List<WeakReference<ApiKeyChangeListener>> listeners = new ArrayList<>();
+
   /**
    * Get singleton instance.
    */
@@ -80,6 +87,7 @@ public String getApiKey() {
    */
   public void setApiKey(String apiKey) {
     this.apiKey = apiKey;
+    notifyListeners();
   }
 
   /**
@@ -89,4 +97,23 @@ public void setApiKey(String apiKey) {
   public static String getSdkVersion() {
     return BuildConfig.SDK_VERSION;
   }
+
+  /**
+   * Adds listener to list of managed callbacks so that it can be notified when API key changes
+   * occur.
+   * @param listenerReference
+   */
+  public void addApiKeyChangeListener(WeakReference<ApiKeyChangeListener> listenerReference) {
+    Collections.synchronizedList(listeners).add(listenerReference);
+  }
+
+  private void notifyListeners() {
+    for (WeakReference<ApiKeyChangeListener> weakReference : Collections.synchronizedList(
+        listeners)) {
+      ApiKeyChangeListener listener = weakReference.get();
+      if (listener != null) {
+        listener.onApiKeyChanged(apiKey);
+      }
+    }
+  }
 }

core/src/main/java/com/mapzen/android/graphics/MapzenMap.java

@@ -1,5 +1,6 @@
 package com.mapzen.android.graphics;
 
+import com.mapzen.android.core.ApiKeyChangeListener;
 import com.mapzen.android.core.MapzenManager;
 import com.mapzen.android.graphics.internal.StyleStringGenerator;
 import com.mapzen.android.graphics.model.BitmapMarker;
@@ -27,6 +28,7 @@
 import android.support.annotation.Nullable;
 import android.view.View;
 
+import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -147,6 +149,15 @@ public boolean onRotate(float x, float y, float rotation) {
     }
   };
 
+  WeakReference<ApiKeyChangeListener> apiKeyChangeListener = new WeakReference(
+      new ApiKeyChangeListener() {
+        @Override public void onApiKeyChanged(String apiKey) {
+          List<SceneUpdate> updates = new ArrayList<>();
+          updates.add(sceneUpdateManager.getApiKeyUpdate(apiKey));
+          mapController.updateSceneAsync(updates);
+        }
+      });
+
   /**
    * Creates a new map based on the given {@link MapView} and {@link MapController}.
    */
@@ -164,6 +175,7 @@ public boolean onRotate(float x, float y, float rotation) {
     this.sceneUpdateManager = sceneUpdateManager;
     this.locale = locale;
     this.mapzenManager = mapzenManager;
+    this.mapzenManager.addApiKeyChangeListener(apiKeyChangeListener);
     mapView.setMapzenMap(this);
     mapController.setPanResponder(internalPanResponder);
     mapController.setRotateResponder(internalRotateResponder);

core/src/main/java/com/mapzen/android/graphics/MapzenMapHttpHandler.java

@@ -45,7 +45,7 @@ HttpHandler httpHandler() {
     return httpHandler;
   }
 
-  private class InternalHttpHandler extends TmpHttpHandler {
+  private class InternalHttpHandler extends HttpHandler {
 
     public InternalHttpHandler(File directory, long maxSize) {
       super(directory, maxSize);

core/src/main/java/com/mapzen/android/graphics/SceneUpdateManager.java

@@ -26,7 +26,7 @@ class SceneUpdateManager {
   List<SceneUpdate> getUpdatesFor(String apiKey, Locale locale, boolean transitOverlayEnabled,
       boolean bikeOverlayEnabled, boolean pathOverlayEnabled) {
     final ArrayList<SceneUpdate> sceneUpdates = new ArrayList<>(2);
-    sceneUpdates.add(new SceneUpdate(STYLE_GLOBAL_VAR_API_KEY, apiKey));
+    sceneUpdates.add(getApiKeyUpdate(apiKey));
     sceneUpdates.add(new SceneUpdate(STYLE_GLOBAL_VAR_LANGUAGE, locale.getLanguage()));
     sceneUpdates.add(getTransitOverlayUpdate(transitOverlayEnabled));
     sceneUpdates.add(getBikeOverlayUpdate(bikeOverlayEnabled));
@@ -63,4 +63,13 @@ SceneUpdate getPathOverlayUpdate(boolean pathOverlayEnabled) {
     return new SceneUpdate(STYLE_GLOBAL_VAR_PATH_OVERLAY, String.valueOf(
         pathOverlayEnabled));
   }
+
+  /**
+   * Creates a {@link SceneUpdate} for the API key.
+   * @param apiKey
+   * @return
+   */
+  SceneUpdate getApiKeyUpdate(String apiKey) {
+    return new SceneUpdate(STYLE_GLOBAL_VAR_API_KEY, apiKey);
+  }
 }

core/src/main/java/com/mapzen/android/search/MapzenSearch.java

@@ -27,7 +27,7 @@ public class MapzenSearch {
   public MapzenSearch(Context context) {
     initDI(context);
     internalSearch = new Pelias();
-    searchInitializer.initSearch(this, context);
+    searchInitializer.initSearch(this);
   }
 
   /**
@@ -37,7 +37,7 @@ public MapzenSearch(Context context) {
   public MapzenSearch(Context context, Pelias pelias) {
     initDI(context);
     internalSearch = pelias;
-    searchInitializer.initSearch(this, context);
+    searchInitializer.initSearch(this);
   }
 
   private void initDI(Context context) {

core/src/main/java/com/mapzen/android/search/MapzenSearchHttpHandler.java

@@ -1,9 +1,13 @@
 package com.mapzen.android.search;
 
+import com.mapzen.android.core.ApiKeyChangeListener;
 import com.mapzen.android.core.GenericHttpHandler;
 import com.mapzen.android.core.MapzenManager;
 import com.mapzen.pelias.PeliasRequestHandler;
 
+import android.content.Context;
+
+import java.lang.ref.WeakReference;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -13,12 +17,21 @@
 public abstract class MapzenSearchHttpHandler implements GenericHttpHandler {
 
   private SearchRequestHandler searchHandler;
+  WeakReference<ApiKeyChangeListener> apiKeyChangeListener = new WeakReference(
+      new ApiKeyChangeListener() {
+        @Override public void onApiKeyChanged(String apiKey) {
+          searchHandler.setApiKey(apiKey);
+        }
+      });
 
   /**
    * Public constructor.
    */
-  public MapzenSearchHttpHandler() {
+  public MapzenSearchHttpHandler(Context context) {
     searchHandler = new SearchRequestHandler();
+    MapzenManager mapzenManager = MapzenManager.instance(context);
+    mapzenManager.addApiKeyChangeListener(apiKeyChangeListener);
+    searchHandler.setApiKey(mapzenManager.getApiKey());
   }
 
   /**