[android] Added force showing the home toolbar button as navigation icon in downloader maps and editor screens

android/res/layout/toolbar_with_search.xml

@@ -10,6 +10,7 @@
   app:contentInsetLeft="@dimen/dp_0"
   app:contentInsetStart="@dimen/dp_0">
   <LinearLayout
+    android:id="@+id/toolbar_container"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="vertical">

android/src/com/mapswithme/maps/downloader/DownloaderToolbarController.java

@@ -7,6 +7,7 @@ import android.view.View;
 
 import com.mapswithme.maps.R;
 import com.mapswithme.maps.widget.SearchToolbarController;
+import com.mapswithme.util.UiUtils;
 import com.mapswithme.util.statistics.Statistics;
 
 class DownloaderToolbarController extends SearchToolbarController
@@ -44,6 +45,10 @@ class DownloaderToolbarController extends SearchToolbarController
     String title = (showSearch ? "" : mFragment.getAdapter().getCurrentRootName());
 
     showSearchControls(showSearch);
+    if (!showSearch)
+      UiUtils.setupHomeUpButtonAsNavigationIcon(getToolbar(), mNavigationClickListener);
+    else
+      UiUtils.clearHomeUpButton(getToolbar());
     setTitle(title);
   }
 

android/src/com/mapswithme/maps/editor/EditorHostFragment.java

@@ -4,17 +4,17 @@ import android.app.Activity;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
-import androidx.annotation.CallSuper;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.annotation.StringRes;
-import androidx.fragment.app.Fragment;
-import androidx.appcompat.app.AlertDialog;
 import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+import androidx.annotation.CallSuper;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.StringRes;
+import androidx.appcompat.app.AlertDialog;
+import androidx.fragment.app.Fragment;
 import com.mapswithme.maps.MwmActivity;
 import com.mapswithme.maps.MwmApplication;
 import com.mapswithme.maps.R;
@@ -130,14 +130,8 @@ public class EditorHostFragment extends BaseMwmToolbarFragment
     super.onViewCreated(view, savedInstanceState);
 
     getToolbarController().getToolbar().findViewById(R.id.save).setOnClickListener(this);
-    getToolbarController().getToolbar().setNavigationOnClickListener(new View.OnClickListener()
-    {
-      @Override
-      public void onClick(View v)
-      {
-        onBackPressed();
-      }
-    });
+    UiUtils.setupHomeUpButtonAsNavigationIcon(getToolbarController().getToolbar(),
+                                              v -> onBackPressed());
 
     if (getArguments() != null)
       mIsNewObject = getArguments().getBoolean(EditorActivity.EXTRA_NEW_OBJECT, false);

android/src/com/mapswithme/maps/widget/SearchToolbarController.java

@@ -43,6 +43,8 @@ public class SearchToolbarController extends ToolbarController
                                              FilterUtils.RoomsGuestsCountProvider
 {
   private static final int REQUEST_VOICE_RECOGNITION = 0xCA11;
+  @Nullable
+  private final View mToolbarContainer;
   @NonNull
   private final View mSearchContainer;
   @NonNull
@@ -154,6 +156,7 @@ public class SearchToolbarController extends ToolbarController
   public SearchToolbarController(View root, Activity activity)
   {
     super(root, activity);
+    mToolbarContainer = getToolbar().findViewById(R.id.toolbar_container);
     mSearchContainer = getToolbar().findViewById(R.id.search_container);
     mQuery = mSearchContainer.findViewById(R.id.query);
     mQuery.setOnClickListener(this);
@@ -356,6 +359,8 @@ public class SearchToolbarController extends ToolbarController
 
   public void showSearchControls(boolean show)
   {
+    if (mToolbarContainer != null)
+      UiUtils.showIf(show, mToolbarContainer);
     UiUtils.showIf(show, mSearchContainer);
   }
 

android/src/com/mapswithme/maps/widget/ToolbarController.java

@@ -22,7 +22,7 @@ public class ToolbarController implements Detachable<Activity>
   @NonNull
   private final Toolbar mToolbar;
   @NonNull
-  private final View.OnClickListener mNavigationClickListener = view -> onUpClick();
+  protected final View.OnClickListener mNavigationClickListener = view -> onUpClick();
 
   public ToolbarController(@NonNull View root, @NonNull Activity activity)
   {

android/src/com/mapswithme/util/UiUtils.java

@@ -486,11 +486,23 @@ public final class UiUtils
     }
     else
     {
-      UiUtils.showHomeUpButton(toolbar);
-      toolbar.setNavigationOnClickListener(listener);
+      setupHomeUpButtonAsNavigationIcon(toolbar, listener);
     }
   }
 
+  public static void setupHomeUpButtonAsNavigationIcon(@NonNull Toolbar toolbar,
+                                                       @NonNull View.OnClickListener listener)
+  {
+    UiUtils.showHomeUpButton(toolbar);
+    toolbar.setNavigationOnClickListener(listener);
+  }
+
+  public static void clearHomeUpButton(@NonNull Toolbar toolbar)
+  {
+    toolbar.setNavigationIcon(null);
+    toolbar.setNavigationOnClickListener(null);
+  }
+
   public static int getCompassYOffset(@NonNull Context context)
   {
     return getStatusBarHeight(context);