Aded InstructionViewCallback to allow views to be alerted when the in…

…struction list is shown or hidden. This fixes the bugs where the re-center button and other widgets are shown on top of the instruction list when it's expanded

app/src/main/java/com/mapbox/services/android/navigation/testapp/activity/navigationui/EmbeddedNavigationActivity.java

@@ -22,6 +22,7 @@
 import com.mapbox.services.android.navigation.ui.v5.NavigationView;
 import com.mapbox.services.android.navigation.ui.v5.NavigationViewOptions;
 import com.mapbox.services.android.navigation.ui.v5.OnNavigationReadyCallback;
+import com.mapbox.services.android.navigation.ui.v5.listeners.InstructionListListener;
 import com.mapbox.services.android.navigation.ui.v5.listeners.NavigationListener;
 import com.mapbox.services.android.navigation.v5.navigation.NavigationRoute;
 import com.mapbox.services.android.navigation.v5.routeprogress.ProgressChangeListener;
@@ -31,14 +32,15 @@
 import retrofit2.Response;
 
 public class EmbeddedNavigationActivity extends AppCompatActivity implements OnNavigationReadyCallback,
-  NavigationListener, ProgressChangeListener {
+  NavigationListener, ProgressChangeListener, InstructionListListener {
 
   private NavigationView navigationView;
   private View spacer;
   private TextView speedWidget;
   private static final Point ORIGIN = Point.fromLngLat(-77.03194990754128, 38.909664963450105);
   private static final Point DESTINATION = Point.fromLngLat(-77.0270025730133, 38.91057077063121);
   private boolean bottomSheetVisible = true;
+  private boolean instructionListShown = false;
 
   @Override
   protected void onCreate(@Nullable Bundle savedInstanceState) {
@@ -78,7 +80,8 @@ private void startNavigation(DirectionsRoute directionsRoute) {
         .navigationListener(this)
         .directionsRoute(directionsRoute)
         .shouldSimulateRoute(true)
-        .progressChangeListener(this);
+        .progressChangeListener(this)
+        .instructionListListener(this);
     setBottomSheetCallback(options);
 
     navigationView.startNavigation(options.build());
@@ -220,6 +223,14 @@ private void setSpeed(Location location) {
       0, string.length() - 3, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 
     speedWidget.setText(spannableString);
-    speedWidget.setVisibility(View.VISIBLE);
+    if (!instructionListShown) {
+      speedWidget.setVisibility(View.VISIBLE);
+    }
+  }
+
+  @Override
+  public void onInstructionListVisibilityChanged(boolean shown) {
+    instructionListShown = shown;
+    speedWidget.setVisibility(shown ? View.GONE : View.VISIBLE);
   }
 }

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/NavigationPresenter.java

@@ -66,4 +66,12 @@ void onNavigationLocationUpdate(Location location) {
     }
     view.updateNavigationMap(location);
   }
+
+  public void onInstructionListVisibilityChanged(boolean visible) {
+    if (visible) {
+      view.hideRecenterBtn();
+    } else {
+      view.showRecenterBtn();
+    }
+  }
 }

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/NavigationView.java

@@ -27,6 +27,7 @@
 import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
 import com.mapbox.services.android.navigation.ui.v5.instruction.ImageCoordinator;
 import com.mapbox.services.android.navigation.ui.v5.instruction.InstructionView;
+import com.mapbox.services.android.navigation.ui.v5.listeners.InstructionListListener;
 import com.mapbox.services.android.navigation.ui.v5.map.NavigationMapboxMap;
 import com.mapbox.services.android.navigation.ui.v5.summary.SummaryBottomSheet;
 import com.mapbox.services.android.navigation.ui.v5.utils.ViewUtils;
@@ -378,6 +379,7 @@ private void initializeView() {
     bind();
     initializeNavigationViewModel();
     initializeSummaryBottomSheet();
+    initializeInstructionListListener();
     initializeNavigationEventDispatcher();
     initializeNavigationPresenter();
   }
@@ -419,6 +421,16 @@ private void initializeNavigationEventDispatcher() {
     navigationViewModel.initializeEventDispatcher(navigationViewEventDispatcher);
   }
 
+  private void initializeInstructionListListener() {
+    instructionView.setInstructionListListener(new InstructionListListener() {
+      @Override
+      public void onInstructionListVisibilityChanged(boolean visible) {
+        navigationPresenter.onInstructionListVisibilityChanged(visible);
+        navigationViewEventDispatcher.onInstructionListVisibilityChanged(visible);
+      }
+    });
+  }
+
   /**
    * Sets the {@link BottomSheetBehavior} based on the last state stored
    * in {@link Bundle} savedInstanceState.

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/NavigationViewEventDispatcher.java

@@ -9,6 +9,7 @@
 import com.mapbox.geojson.Point;
 import com.mapbox.services.android.navigation.ui.v5.feedback.FeedbackItem;
 import com.mapbox.services.android.navigation.ui.v5.listeners.FeedbackListener;
+import com.mapbox.services.android.navigation.ui.v5.listeners.InstructionListListener;
 import com.mapbox.services.android.navigation.ui.v5.listeners.NavigationListener;
 import com.mapbox.services.android.navigation.ui.v5.listeners.RouteListener;
 import com.mapbox.services.android.navigation.v5.navigation.MapboxNavigation;
@@ -24,6 +25,7 @@ class NavigationViewEventDispatcher {
   private NavigationListener navigationListener;
   private RouteListener routeListener;
   private BottomSheetCallback bottomSheetCallback;
+  private InstructionListListener instructionListListener;
 
   /**
    * Initializes the listeners in the dispatcher, as well as the listeners in the {@link MapboxNavigation}
@@ -37,6 +39,7 @@ void initializeListeners(NavigationViewOptions navigationViewOptions, MapboxNavi
     assignBottomSheetCallback(navigationViewOptions.bottomSheetCallback());
     assignProgressChangeListener(navigationViewOptions, navigation);
     assignMilestoneEventListener(navigationViewOptions, navigation);
+    assignInstructionListListener(navigationViewOptions.instructionListListener());
   }
 
   void assignFeedbackListener(@Nullable FeedbackListener feedbackListener) {
@@ -55,6 +58,10 @@ void assignBottomSheetCallback(@Nullable BottomSheetCallback bottomSheetCallback
     this.bottomSheetCallback = bottomSheetCallback;
   }
 
+  void assignInstructionListListener(@Nullable InstructionListListener instructionListListener) {
+    this.instructionListListener = instructionListListener;
+  }
+
   /*
    * Feedback listeners
    */
@@ -141,6 +148,12 @@ void onBottomSheetStateChanged(View bottomSheet, int newState) {
     }
   }
 
+  void onInstructionListVisibilityChanged(boolean shown) {
+    if (instructionListListener != null) {
+      instructionListListener.onInstructionListVisibilityChanged(shown);
+    }
+  }
+
   private void assignProgressChangeListener(NavigationViewOptions navigationViewOptions, MapboxNavigation navigation) {
     if (navigationViewOptions.progressChangeListener() != null) {
       navigation.addProgressChangeListener(navigationViewOptions.progressChangeListener());

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/NavigationViewOptions.java

@@ -7,6 +7,7 @@
 import com.mapbox.api.directions.v5.DirectionsCriteria;
 import com.mapbox.api.directions.v5.models.DirectionsRoute;
 import com.mapbox.services.android.navigation.ui.v5.listeners.FeedbackListener;
+import com.mapbox.services.android.navigation.ui.v5.listeners.InstructionListListener;
 import com.mapbox.services.android.navigation.ui.v5.listeners.NavigationListener;
 import com.mapbox.services.android.navigation.ui.v5.listeners.RouteListener;
 import com.mapbox.services.android.navigation.v5.milestone.Milestone;
@@ -42,6 +43,9 @@ public abstract class NavigationViewOptions extends NavigationUiOptions {
   @Nullable
   public abstract BottomSheetCallback bottomSheetCallback();
 
+  @Nullable
+  public abstract InstructionListListener instructionListListener();
+
   @AutoValue.Builder
   public abstract static class Builder {
 
@@ -73,6 +77,8 @@ public abstract static class Builder {
 
     public abstract Builder bottomSheetCallback(BottomSheetCallback bottomSheetCallback);
 
+    public abstract Builder instructionListListener(InstructionListListener instructionListListener);
+
     public abstract NavigationViewOptions build();
   }
 

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/instruction/InstructionView.java

@@ -48,6 +48,7 @@
 import com.mapbox.services.android.navigation.ui.v5.feedback.FeedbackItem;
 import com.mapbox.services.android.navigation.ui.v5.instruction.maneuver.ManeuverView;
 import com.mapbox.services.android.navigation.ui.v5.instruction.turnlane.TurnLaneAdapter;
+import com.mapbox.services.android.navigation.ui.v5.listeners.InstructionListListener;
 import com.mapbox.services.android.navigation.ui.v5.summary.list.InstructionListAdapter;
 import com.mapbox.services.android.navigation.v5.navigation.NavigationConstants;
 import com.mapbox.services.android.navigation.v5.navigation.metrics.FeedbackEvent;
@@ -104,6 +105,7 @@ public class InstructionView extends RelativeLayout implements FeedbackBottomShe
   private AnimationSet fadeInSlowOut;
   private LegStep currentStep;
   private NavigationViewModel navigationViewModel;
+  private InstructionListListener instructionListListener;
 
   private String language = "";
   private String unitType = "";
@@ -123,6 +125,10 @@ public InstructionView(Context context, @Nullable AttributeSet attrs, int defSty
     initialize();
   }
 
+  public void setInstructionListListener(InstructionListListener instructionListListener) {
+    this.instructionListListener = instructionListListener;
+  }
+
   /**
    * Once this view has finished inflating, it will bind the views.
    * <p>
@@ -299,6 +305,9 @@ public void hideInstructionList() {
       updateLandscapeConstraintsTo(R.layout.instruction_layout);
     }
     instructionListLayout.setVisibility(GONE);
+    if (instructionListListener != null) {
+      instructionListListener.onInstructionListVisibilityChanged(false);
+    }
   }
 
   /**
@@ -308,6 +317,9 @@ public void hideInstructionList() {
    * can be animated appropriately.
    */
   public void showInstructionList() {
+    if (instructionListListener != null) {
+      instructionListListener.onInstructionListVisibilityChanged(true);
+    }
     beginDelayedTransition();
     int orientation = getContext().getResources().getConfiguration().orientation;
     if (orientation == Configuration.ORIENTATION_LANDSCAPE) {

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/listeners/InstructionListListener.java

@@ -0,0 +1,14 @@
+package com.mapbox.services.android.navigation.ui.v5.listeners;
+
+/**
+ * A listener that is triggered when the instruction list in InstructionView is shown or hidden.
+ */
+public interface InstructionListListener {
+  /**
+   * Triggered when the instruction list is shown or hidden.
+   *
+   * @param visible whether the list is shown or hidden
+   * @since 0.15.0
+   */
+  void onInstructionListVisibilityChanged(boolean visible);
+}

libandroid-navigation-ui/src/test/java/com/mapbox/services/android/navigation/ui/v5/NavigationViewEventDispatcherTest.java

@@ -4,6 +4,7 @@
 import com.mapbox.geojson.Point;
 import com.mapbox.services.android.navigation.ui.v5.feedback.FeedbackItem;
 import com.mapbox.services.android.navigation.ui.v5.listeners.FeedbackListener;
+import com.mapbox.services.android.navigation.ui.v5.listeners.InstructionListListener;
 import com.mapbox.services.android.navigation.ui.v5.listeners.NavigationListener;
 import com.mapbox.services.android.navigation.ui.v5.listeners.RouteListener;
 
@@ -278,4 +279,15 @@ public void onFeedbackListenerNotSet_feedbackSentIsNotCalled() throws Exception
 
     verify(feedbackListener, times(0)).onFeedbackSent(item);
   }
+
+  @Test
+  public void onInstructionListShown() {
+    NavigationViewEventDispatcher eventDispatcher = new NavigationViewEventDispatcher();
+    InstructionListListener instructionListListener = mock(InstructionListListener.class);
+    eventDispatcher.assignInstructionListListener(instructionListListener);
+
+    eventDispatcher.onInstructionListVisibilityChanged(true);
+
+    verify(instructionListListener, times(1)).onInstructionListVisibilityChanged(true);
+  }
 }