From 82c57f9b49b99754ec5de94840596b0c7e9beb52 Mon Sep 17 00:00:00 2001
From: Alex Sytnyk <asytnyk0@gmail.com>
Date: Thu, 5 Apr 2018 20:37:23 +0300
Subject: [PATCH] Add ExploreTabFragment and SavedArticlesTabFragment to the
 WikivoyageExploreDialogFragment

---
 .../plus/wikivoyage/ExploreTabFragment.java   |  7 +++
 .../wikivoyage/SavedArticlesTabFragment.java  |  7 +++
 .../WikivoyageExploreDialogFragment.java      | 60 ++++++++++++++++++-
 3 files changed, 72 insertions(+), 2 deletions(-)
 create mode 100644 OsmAnd/src/net/osmand/plus/wikivoyage/ExploreTabFragment.java
 create mode 100644 OsmAnd/src/net/osmand/plus/wikivoyage/SavedArticlesTabFragment.java

diff --git a/OsmAnd/src/net/osmand/plus/wikivoyage/ExploreTabFragment.java b/OsmAnd/src/net/osmand/plus/wikivoyage/ExploreTabFragment.java
new file mode 100644
index 0000000000..27bf00d77f
--- /dev/null
+++ b/OsmAnd/src/net/osmand/plus/wikivoyage/ExploreTabFragment.java
@@ -0,0 +1,7 @@
+package net.osmand.plus.wikivoyage;
+
+import net.osmand.plus.base.BaseOsmAndFragment;
+
+public class ExploreTabFragment extends BaseOsmAndFragment {
+
+}
diff --git a/OsmAnd/src/net/osmand/plus/wikivoyage/SavedArticlesTabFragment.java b/OsmAnd/src/net/osmand/plus/wikivoyage/SavedArticlesTabFragment.java
new file mode 100644
index 0000000000..ced917bad6
--- /dev/null
+++ b/OsmAnd/src/net/osmand/plus/wikivoyage/SavedArticlesTabFragment.java
@@ -0,0 +1,7 @@
+package net.osmand.plus.wikivoyage;
+
+import net.osmand.plus.base.BaseOsmAndFragment;
+
+public class SavedArticlesTabFragment extends BaseOsmAndFragment {
+
+}
diff --git a/OsmAnd/src/net/osmand/plus/wikivoyage/WikivoyageExploreDialogFragment.java b/OsmAnd/src/net/osmand/plus/wikivoyage/WikivoyageExploreDialogFragment.java
index 3cf610112a..b1fc9b1e6f 100644
--- a/OsmAnd/src/net/osmand/plus/wikivoyage/WikivoyageExploreDialogFragment.java
+++ b/OsmAnd/src/net/osmand/plus/wikivoyage/WikivoyageExploreDialogFragment.java
@@ -5,21 +5,33 @@ import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.design.widget.BottomNavigationView;
+import android.support.design.widget.BottomNavigationView.OnNavigationItemSelectedListener;
+import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentPagerAdapter;
 import android.support.v7.widget.Toolbar;
 import android.view.LayoutInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 
 import net.osmand.AndroidUtils;
+import net.osmand.plus.LockableViewPager;
 import net.osmand.plus.R;
 import net.osmand.plus.wikivoyage.search.WikivoyageSearchDialogFragment;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 public class WikivoyageExploreDialogFragment extends WikivoyageBaseDialogFragment {
 
 	public static final String TAG = "WikivoyageExploreDialogFragment";
 
+	private static final int EXPLORE_POSITION = 0;
+	private static final int SAVED_ARTICLES_POSITION = 1;
+
 	@Nullable
 	@Override
 	public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
@@ -37,10 +49,34 @@ public class WikivoyageExploreDialogFragment extends WikivoyageBaseDialogFragmen
 			}
 		});
 
-		ColorStateList navColorStateList = createBottomNavColorStateList();
-		BottomNavigationView bottomNav = (BottomNavigationView) mainView.findViewById(R.id.bottom_navigation);
+		final LockableViewPager viewPager = (LockableViewPager) mainView.findViewById(R.id.view_pager);
+		viewPager.setOffscreenPageLimit(2);
+		viewPager.setSwipeLocked(true);
+		viewPager.setAdapter(new ViewPagerAdapter(getChildFragmentManager()));
+
+		final ColorStateList navColorStateList = createBottomNavColorStateList();
+		final BottomNavigationView bottomNav = (BottomNavigationView) mainView.findViewById(R.id.bottom_navigation);
 		bottomNav.setItemIconTintList(navColorStateList);
 		bottomNav.setItemTextColor(navColorStateList);
+		bottomNav.setOnNavigationItemSelectedListener(new OnNavigationItemSelectedListener() {
+			@Override
+			public boolean onNavigationItemSelected(@NonNull MenuItem item) {
+				int position = -1;
+				switch (item.getItemId()) {
+					case R.id.action_explore:
+						position = EXPLORE_POSITION;
+						break;
+					case R.id.action_saved_articles:
+						position = SAVED_ARTICLES_POSITION;
+						break;
+				}
+				if (position != -1 && position != viewPager.getCurrentItem()) {
+					viewPager.setCurrentItem(position);
+					return true;
+				}
+				return false;
+			}
+		});
 
 		return mainView;
 	}
@@ -60,4 +96,24 @@ public class WikivoyageExploreDialogFragment extends WikivoyageBaseDialogFragmen
 			return false;
 		}
 	}
+
+	private static class ViewPagerAdapter extends FragmentPagerAdapter {
+
+		private final List<Fragment> fragments = new ArrayList<>();
+
+		ViewPagerAdapter(FragmentManager fm) {
+			super(fm);
+			fragments.addAll(Arrays.asList(new ExploreTabFragment(), new SavedArticlesTabFragment()));
+		}
+
+		@Override
+		public Fragment getItem(int position) {
+			return fragments.get(position);
+		}
+
+		@Override
+		public int getCount() {
+			return fragments.size();
+		}
+	}
 }