Make activity authrotiative of contentView and implement a basic Settings skelet

app/src/main/java/eu/konggdev/strikemaps/MainActivity.java

@@ -18,6 +18,7 @@ public class MainActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
 
         app = new AppController(this);
+        setContentView(R.layout.view_main);
         app.init();
     }
 
@@ -28,4 +29,11 @@ public class MainActivity extends AppCompatActivity {
     public void logcat(String log) {
         Log.i("LogcatGeneric", log);
     }
+
+    @Override
+    public void onBackPressed() {
+        if (!app.getUi().back()) {
+            super.onBackPressed(); // exits app
+        }
+    }
 }

app/src/main/java/eu/konggdev/strikemaps/app/AppController.java

@@ -7,6 +7,7 @@ import eu.konggdev.strikemaps.MainActivity;
 import eu.konggdev.strikemaps.R;
 import eu.konggdev.strikemaps.map.MapComponent;
 import eu.konggdev.strikemaps.ui.UIComponent;
+import eu.konggdev.strikemaps.ui.screen.definition.DefinedScreen;
 
 import static android.content.Context.MODE_PRIVATE;
 public class AppController {
@@ -39,7 +40,7 @@ public class AppController {
         if(map == null) map = new MapComponent(this);
         if(ui == null) {
             ui = new UIComponent(this, map);
-            ui.swapScreen(R.layout.screen_main); //Initial
+            ui.swapScreen(DefinedScreen.MAIN); //Initial
         }
     }
 }

app/src/main/java/eu/konggdev/strikemaps/ui/UIComponent.java

@@ -3,64 +3,74 @@ package eu.konggdev.strikemaps.ui;
 import android.app.AlertDialog;
 import android.view.View;
 import androidx.annotation.NonNull;
-import com.google.common.collect.BiMap;
 import eu.konggdev.strikemaps.Component;
 import eu.konggdev.strikemaps.R;
 import eu.konggdev.strikemaps.app.AppController;
 import eu.konggdev.strikemaps.map.MapComponent;
-import eu.konggdev.strikemaps.ui.element.UIRegion;
+import eu.konggdev.strikemaps.ui.element.region.content.MainContentRegion;
+import eu.konggdev.strikemaps.ui.element.region.UIRegion;
 import eu.konggdev.strikemaps.ui.fragment.layout.FragmentLayoutControls;
+import eu.konggdev.strikemaps.ui.fragment.layout.FragmentLayoutSearch;
 import eu.konggdev.strikemaps.ui.fragment.layout.content.main.FragmentLayoutContentSettings;
 import eu.konggdev.strikemaps.ui.screen.Screen;
+import eu.konggdev.strikemaps.ui.screen.definition.DefinedScreen;
 
-import java.util.HashMap;
+import java.util.ArrayDeque;
 import java.util.Map;
 import java.util.function.Consumer;
 
 public class UIComponent implements Component {
     @NonNull AppController app;
-    private Map<Integer, Screen> screens;
-    private Integer currentScreen;
+    MapComponent map;
+
+    private final ArrayDeque<Screen> screenStack = new ArrayDeque<>();
 
     public UIComponent(AppController app, MapComponent map) {
         this.app = app;
-        this.screens = Map.of(
+        this.map = map;
+    }
+
+    public Map<DefinedScreen, Screen> getScreens(MapComponent map) {
+        return Map.of(
                 //Main screen
-                R.layout.screen_main, new Screen(
+                DefinedScreen.MAIN, new Screen(
                         //App reference
                         app,
-                        //Map view
-                        map.toFragment(), //FragmentLayoutContentMap
                         //Main screen init regions definition
-                        Map.of(R.id.bottomUi, new UIRegion(new FragmentLayoutControls(app, R.id.bottomUi), R.id.bottomUi)), //TODO: Probably stop referencing layout 3(!) times everytime
-                        //Layout
-                        R.layout.screen_main //TODO: Define this for the Screen without duplicating the reference
+                        Map.of(
+                                R.id.mainContentView, new MainContentRegion(map.toFragment(), R.id.mainContentView),
+                                R.id.bottomUi, new UIRegion(new FragmentLayoutControls(app, R.id.bottomUi), R.id.bottomUi),
+                                R.id.topUi, new UIRegion(new FragmentLayoutSearch(app, R.id.topUi), R.id.topUi)
+                        ) //TODO: Probably stop referencing layout 3(!) times everytime
                 ),
                 //Settings screen
-                R.layout.screen_settings, new Screen(
+                DefinedScreen.SETTINGS, new Screen(
                         app,
-                        //Settings
-                        new FragmentLayoutContentSettings(),
-                        /* No regions defined in settings
-                           Entire screen is just the main view */
-                        new HashMap<>(),
-                        //Layout
-                        R.layout.screen_settings
+                        //Just the settings content fragment
+                        Map.of(
+                                R.id.mainContentView, new MainContentRegion(new FragmentLayoutContentSettings(), R.id.mainContentView)
+                        )
                 )
         );
     }
 
-    public void swapScreen(Integer screen) {
-        currentScreen = screen;
+    public void swapScreen(DefinedScreen screenKey) {
+        if (!screenStack.isEmpty()) getCurrentScreen().detachAll();
+        screenStack.add(getScreens(map).get(screenKey));
         getCurrentScreen().attachAll();
     }
 
-    public Screen getCurrentScreen() {
-        return getScreen(currentScreen);
+    public boolean back() {
+        if (screenStack.size() <= 1) return false;
+        getCurrentScreen().detachAll();
+
+        screenStack.removeLast();
+        getCurrentScreen().attachAll();
+        return true;
     }
 
-    public Screen getScreen(Integer screen) {
-        return screens.get(screen);
+    public Screen getCurrentScreen() {
+        return screenStack.getLast();
     }
 
     public void alert(AlertDialog dialog) {

app/src/main/java/eu/konggdev/strikemaps/ui/element/region/UIRegion.java

@@ -1,4 +1,4 @@
-package eu.konggdev.strikemaps.ui.element;
+package eu.konggdev.strikemaps.ui.element.region;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
@@ -40,5 +40,4 @@ public class UIRegion {
             currentFragment = stockFragment;
         }
     }
-
 }

app/src/main/java/eu/konggdev/strikemaps/ui/element/region/content/MainContentRegion.java

@@ -0,0 +1,24 @@
+package eu.konggdev.strikemaps.ui.element.region.content;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import eu.konggdev.strikemaps.ui.element.region.UIRegion;
+
+public class MainContentRegion extends UIRegion {
+    public Fragment fragment;
+    public Integer layoutId;
+
+    public MainContentRegion(@NonNull Fragment initFragment, Integer refLayoutId) {
+        super(initFragment, refLayoutId);
+        this.fragment = initFragment;
+        this.layoutId = refLayoutId;
+    }
+
+    public Fragment getFragment() {
+        return this.fragment;
+    }
+
+    public void setFragment(Fragment fragment) {
+        this.fragment = fragment;
+    }
+}

app/src/main/java/eu/konggdev/strikemaps/ui/fragment/ContainerFragment.java

@@ -4,7 +4,6 @@ import android.view.MotionEvent;
 import android.view.View;
 
 import androidx.fragment.app.Fragment;
-import eu.konggdev.strikemaps.ui.element.UIRegion;
 
 public interface ContainerFragment {
     abstract public Integer getRegion();

app/src/main/java/eu/konggdev/strikemaps/ui/fragment/layout/FragmentLayoutSearch.java

@@ -0,0 +1,51 @@
+package eu.konggdev.strikemaps.ui.fragment.layout;
+
+import android.Manifest;
+import android.app.AlertDialog;
+import android.content.pm.PackageManager;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.core.content.ContextCompat;
+import androidx.fragment.app.Fragment;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import eu.konggdev.strikemaps.R;
+import eu.konggdev.strikemaps.app.AppController;
+import eu.konggdev.strikemaps.data.helper.UserPrefsHelper;
+import eu.konggdev.strikemaps.map.overlay.implementation.LocationOverlay;
+import eu.konggdev.strikemaps.ui.fragment.popup.FragmentMapChangePopup;
+import eu.konggdev.strikemaps.ui.screen.definition.DefinedScreen;
+
+public class FragmentLayoutSearch extends Fragment implements Layout {
+    AppController app;
+    View rootView;
+
+    private final Integer region;
+
+    public FragmentLayoutSearch(AppController app, Integer region) {
+        super(R.layout.fragment_search);
+        this.app = app;
+        this.region = region;
+    }
+
+    @Override
+    public Integer getRegion() {
+        return region;
+    }
+
+    @Override
+    public Fragment toFragment() {
+        return this;
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        //TODO: Make a floating menu instead of going right in settings
+        setupButton(view, R.id.hamburgerButton, click(() -> app.getUi().swapScreen(DefinedScreen.SETTINGS)));
+    }
+}

app/src/main/java/eu/konggdev/strikemaps/ui/fragment/layout/content/main/FragmentLayoutContentMap.java

@@ -2,13 +2,11 @@ package eu.konggdev.strikemaps.ui.fragment.layout.content.main;
 
 import android.os.Bundle;
 import android.view.View;
+import android.view.ViewGroup;
 import android.widget.LinearLayout;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
-
-import eu.konggdev.strikemaps.ui.element.UIRegion;
-
 import eu.konggdev.strikemaps.R;
 
 public class FragmentLayoutContentMap extends Fragment implements MainContentLayout {
@@ -28,6 +26,7 @@ public class FragmentLayoutContentMap extends Fragment implements MainContentLay
     public void onViewCreated(@NonNull View view, Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
         LinearLayout layout = (LinearLayout) view;
+        if(mapView.getParent() != null) ((ViewGroup) mapView.getParent()).removeView(mapView);
         layout.addView(mapView);
     }
 }

app/src/main/java/eu/konggdev/strikemaps/ui/fragment/layout/content/main/FragmentLayoutContentSettings.java

@@ -1,10 +1,20 @@
 package eu.konggdev.strikemaps.ui.fragment.layout.content.main;
 
-import androidx.fragment.app.Fragment;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.LinearLayout;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import eu.konggdev.strikemaps.R;
+
+public class FragmentLayoutContentSettings extends Fragment implements MainContentLayout {
+    public FragmentLayoutContentSettings() {
+        super(R.layout.fragment_settings);
+    }
 
-public class FragmentLayoutContentSettings implements MainContentLayout {
     @Override
     public Fragment toFragment() {
-        return null;
+        return this;
     }
 }

app/src/main/java/eu/konggdev/strikemaps/ui/screen/Screen.java

@@ -3,27 +3,22 @@ package eu.konggdev.strikemaps.ui.screen;
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
 
-import java.util.List;
 import java.util.Map;
 
-import eu.konggdev.strikemaps.R;
 import eu.konggdev.strikemaps.app.AppController;
 import eu.konggdev.strikemaps.ui.fragment.ContainerFragment;
+import eu.konggdev.strikemaps.ui.fragment.FragmentEmptyPlaceholder;
 import eu.konggdev.strikemaps.ui.fragment.layout.content.main.MainContentLayout;
 import eu.konggdev.strikemaps.ui.fragment.popup.Popup;
-import eu.konggdev.strikemaps.ui.element.UIRegion;
+import eu.konggdev.strikemaps.ui.element.region.UIRegion;
 
 public class Screen {
     @NonNull AppController app;
-    public Screen(AppController app, MainContentLayout mainContent, Map<Integer, UIRegion> regions, Integer layout) {
+    public Screen(AppController app, Map<Integer, UIRegion> regions) {
         this.app = app;
-        this.layout = layout;
-        this.mainContent = mainContent;
         this.uiRegions = regions;
     }
 
-    private final Integer layout;
-
     private MainContentLayout mainContent;
 
     Map<Integer, UIRegion> uiRegions;
@@ -68,10 +63,10 @@ public class Screen {
     }
 
     public void attachAll() {
-        app.getActivity().setContentView(layout);
-        fragmentTransaction(R.id.mainContentView, mainContent.toFragment());
-        for (UIRegion region : uiRegions.values()) {
-            setFragment(region, region.getFragment());
+        for (UIRegion region : uiRegions.values()) setFragment(region, region.getFragment());
     }
+
+    public void detachAll() {
+        for (UIRegion region : uiRegions.values()) fragmentTransaction(region.layoutId, new FragmentEmptyPlaceholder());
     }
 }

app/src/main/java/eu/konggdev/strikemaps/ui/screen/definition/DefinedScreen.java

@@ -0,0 +1,5 @@
+package eu.konggdev.strikemaps.ui.screen.definition;
+public enum DefinedScreen {
+    MAIN,
+    SETTINGS
+}

app/src/main/res/layout/fragment_search.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:padding="24dp">
+
+    <LinearLayout
+            android:id="@+id/searchContainer"
+            android:layout_width="290dp"
+            android:layout_height="33dp"
+            android:layout_marginTop="4dp"
+            android:orientation="horizontal"
+            android:background="#000000"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toEndOf="parent">
+
+        <SearchView
+                android:id="@+id/searchView"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:iconifiedByDefault="false"
+                android:queryHint="Search..."
+                android:background="@android:color/transparent" />
+
+        <ImageButton
+                android:id="@+id/hamburgerButton"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:background="@android:color/transparent"
+                android:contentDescription="Menu"
+                android:src="@drawable/ic_hamburger_menu" />
+
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/fragment_settings.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:padding="24dp"
+        android:background="@android:color/background_dark">
+
+    <TextView
+            android:id="@+id/settingsBanner"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Settings"
+            android:textColor="#FFFFFF"
+            android:textSize="21sp"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/screen_main.xml

@@ -1,80 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout
-    android:id="@+id/constraintLayout"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:fitsSystemWindows="true"
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools" >
-
-    <LinearLayout
-        android:id="@+id/popupHolder"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="horizontal">
-    </LinearLayout>
-
-    <LinearLayout
-        android:id="@+id/mainContentView"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="horizontal"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" >
-    </LinearLayout>
-
-    <FrameLayout
-        android:id="@+id/bottomUi"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintHorizontal_bias="0.0"
-        app:layout_constraintStart_toStartOf="parent" />
-
-    <TextView
-        android:id="@+id/devIndicator"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="DEVELOPMENT BUILD!"
-        android:textColor="#000000"
-        android:textSize="13sp"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
-
-    <LinearLayout
-        android:id="@+id/searchContainer"
-        android:layout_width="280dp"
-        android:layout_height="33dp"
-        android:layout_marginTop="16dp"
-        android:orientation="horizontal"
-        android:background="#000000"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent">
-
-        <SearchView
-            android:id="@+id/searchView"
-            android:layout_width="0dp"
-            android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:iconifiedByDefault="false"
-            android:queryHint="Search..."
-            android:background="@android:color/transparent" />
-
-        <ImageButton
-            android:id="@+id/hamburgerButton"
-            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:background="@android:color/transparent"
-            android:contentDescription="Menu"
-            android:src="@drawable/ic_hamburger_menu" />
-
-    </LinearLayout>
-
-</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/screen_settings.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-                                                   android:layout_width="match_parent"
-                                                   android:layout_height="match_parent">
-
-</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/view_main.xml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/constraintLayout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:fitsSystemWindows="true"
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        xmlns:tools="http://schemas.android.com/tools" >
+
+    <LinearLayout
+            android:id="@+id/mainContentView"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="horizontal"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+    <FrameLayout
+            android:id="@+id/bottomUi"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintHorizontal_bias="0.0" />
+
+    <FrameLayout
+            android:id="@+id/topUi"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
+            android:orientation="horizontal"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintHorizontal_bias="0.0" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>