Add about screen to the context menu of the main screen

app/src/main/java/io/timelimit/android/ui/fragment/SingleFragmentWrapper.kt

@@ -0,0 +1,65 @@
+/*
+ * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+package io.timelimit.android.ui.fragment
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.navigation.NavController
+import androidx.navigation.Navigation
+import io.timelimit.android.R
+import io.timelimit.android.livedata.liveDataFromValue
+import io.timelimit.android.ui.main.ActivityViewModelHolder
+import io.timelimit.android.ui.main.AuthenticationFab
+import kotlinx.android.synthetic.main.fragment_main.*
+
+abstract class SingleFragmentWrapper: Fragment() {
+    private val activity: ActivityViewModelHolder by lazy { getActivity() as ActivityViewModelHolder }
+    private lateinit var navController: NavController
+
+    protected val navigation get() = navController
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        navController = Navigation.findNavController(container!!)
+
+        return inflater.inflate(R.layout.single_fragment_wrapper, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        AuthenticationFab.manageAuthenticationFab(
+                fab = fab,
+                fragment = this,
+                shouldHighlight = activity.getActivityViewModel().shouldHighlightAuthenticationButton,
+                authenticatedUser = activity.getActivityViewModel().authenticatedUser,
+                doesSupportAuth = liveDataFromValue(showAuthButton)
+        )
+
+        fab.setOnClickListener { activity.showAuthenticationScreen() }
+
+        if (savedInstanceState == null) {
+            childFragmentManager.beginTransaction()
+                    .replace(R.id.container, createChildFragment())
+                    .commit()
+        }
+    }
+
+    abstract fun createChildFragment(): Fragment
+    abstract val showAuthButton: Boolean
+}

app/src/main/java/io/timelimit/android/ui/fragment/SingleFragmentWrappers.kt

@@ -0,0 +1,49 @@
+/*
+ * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package io.timelimit.android.ui.fragment
+
+import androidx.fragment.app.Fragment
+import io.timelimit.android.R
+import io.timelimit.android.extensions.safeNavigate
+import io.timelimit.android.ui.overview.about.AboutFragment
+import io.timelimit.android.ui.overview.about.AboutFragmentParentHandlers
+
+class AboutFragmentWrapped: SingleFragmentWrapper(), AboutFragmentParentHandlers {
+    override val showAuthButton: Boolean = false
+    override fun createChildFragment(): Fragment = AboutFragment()
+
+    override fun onShowDiagnoseScreen() {
+        navigation.safeNavigate(
+                AboutFragmentWrappedDirections.actionAboutFragmentWrappedToDiagnoseMainFragment(),
+                R.id.aboutFragmentWrapped
+        )
+    }
+
+    override fun onShowPurchaseScreen() {
+        navigation.safeNavigate(
+                AboutFragmentWrappedDirections.actionAboutFragmentWrappedToPurchaseFragment(),
+                R.id.aboutFragmentWrapped
+        )
+    }
+
+    override fun onShowStayAwesomeScreen() {
+        navigation.safeNavigate(
+                AboutFragmentWrappedDirections.actionAboutFragmentWrappedToStayAwesomeFragment(),
+                R.id.aboutFragmentWrapped
+        )
+    }
+}

app/src/main/java/io/timelimit/android/ui/overview/main/MainFragment.kt

@@ -16,9 +16,7 @@
 package io.timelimit.android.ui.overview.main
 
 import android.os.Bundle
-import android.view.LayoutInflater
+import android.view.*
-import android.view.View
-import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentTransaction
 import androidx.lifecycle.LiveData
@@ -60,6 +58,12 @@ class MainFragment : Fragment(), OverviewFragmentParentHandlers, AboutFragmentPa
     private var wereViewsCreated = false
     private var didRedirectToUserScreen = false
 
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setHasOptionsMenu(true)
+    }
+
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         navigation = Navigation.findNavController(container!!)
 
@@ -231,4 +235,22 @@ class MainFragment : Fragment(), OverviewFragmentParentHandlers, AboutFragmentPa
     }
 
     override fun getCustomTitle(): LiveData<String?> = liveDataFromValue("${getString(R.string.main_tab_overview)} (${getString(R.string.app_name)})")
+
+    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+        super.onCreateOptionsMenu(menu, inflater)
+
+        inflater.inflate(R.menu.fragment_main_menu, menu)
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean = when (item.itemId) {
+        R.id.menu_main_about -> {
+            navigation.safeNavigate(
+                    MainFragmentDirections.actionOverviewFragmentToAboutFragmentWrapped(),
+                    R.id.overviewFragment
+            )
+
+            true
+        }
+        else -> super.onOptionsItemSelected(item)
+    }
 }

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

@@ -0,0 +1,44 @@
+<!--
+  TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation version 3 of the License.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program. If not, see <https://www.gnu.org/licenses/>.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    tools:context="io.timelimit.android.ui.fragment.SingleFragmentWrapper">
+
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:layout_width="match_parent"
+        android:layout_weight="1"
+        android:layout_height="0dp">
+
+        <FrameLayout
+            android:id="@+id/container"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
+
+        <com.google.android.material.floatingactionbutton.FloatingActionButton
+            android:id="@+id/fab"
+            app:fabSize="normal"
+            android:src="@drawable/ic_lock_open_white_24dp"
+            android:layout_margin="16dp"
+            android:layout_gravity="end|bottom"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" />
+
+    </androidx.coordinatorlayout.widget.CoordinatorLayout>
+
+</LinearLayout>

app/src/main/res/menu/fragment_main_menu.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation version 3 of the License.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program. If not, see <https://www.gnu.org/licenses/>.
+-->
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:icon="@drawable/ic_info_outline_black_24dp"
+        android:title="@string/main_tab_about"
+        android:id="@+id/menu_main_about" />
+</menu>

app/src/main/res/navigation/nav_graph.xml

@@ -90,6 +90,13 @@
         <action
             android:id="@+id/action_overviewFragment_to_parentModeFragment"
             app:destination="@id/parentModeFragment" />
+        <action
+            android:id="@+id/action_overviewFragment_to_aboutFragmentWrapped"
+            app:destination="@id/aboutFragmentWrapped"
+            app:enterAnim="@anim/nav_default_enter_anim"
+            app:exitAnim="@anim/nav_default_exit_anim"
+            app:popEnterAnim="@anim/nav_default_pop_enter_anim"
+            app:popExitAnim="@anim/nav_default_pop_exit_anim" />
     </fragment>
     <fragment
         android:id="@+id/manageChildFragment"
@@ -434,4 +441,30 @@
             app:popEnterAnim="@anim/nav_default_pop_enter_anim"
             app:popExitAnim="@anim/nav_default_pop_exit_anim" />
     </fragment>
+    <fragment
+        android:id="@+id/aboutFragmentWrapped"
+        android:name="io.timelimit.android.ui.fragment.AboutFragmentWrapped"
+        android:label="AboutFragmentWrapped" >
+        <action
+            android:id="@+id/action_aboutFragmentWrapped_to_diagnoseMainFragment"
+            app:destination="@id/diagnoseMainFragment"
+            app:enterAnim="@anim/nav_default_enter_anim"
+            app:exitAnim="@anim/nav_default_exit_anim"
+            app:popEnterAnim="@anim/nav_default_pop_enter_anim"
+            app:popExitAnim="@anim/nav_default_pop_exit_anim" />
+        <action
+            android:id="@+id/action_aboutFragmentWrapped_to_stayAwesomeFragment"
+            app:destination="@id/stayAwesomeFragment"
+            app:enterAnim="@anim/nav_default_enter_anim"
+            app:exitAnim="@anim/nav_default_exit_anim"
+            app:popEnterAnim="@anim/nav_default_pop_enter_anim"
+            app:popExitAnim="@anim/nav_default_pop_exit_anim" />
+        <action
+            android:id="@+id/action_aboutFragmentWrapped_to_purchaseFragment"
+            app:destination="@id/purchaseFragment"
+            app:enterAnim="@anim/nav_default_enter_anim"
+            app:exitAnim="@anim/nav_default_exit_anim"
+            app:popEnterAnim="@anim/nav_default_pop_enter_anim"
+            app:popExitAnim="@anim/nav_default_pop_exit_anim" />
+    </fragment>
 </navigation>