Add UI to manage time warnings

app/src/main/java/io/timelimit/android/data/model/Category.kt

@@ -166,3 +166,15 @@ data class Category(
         writer.endObject()
     }
 }
+
+object CategoryTimeWarnings {
+    val durationToBitIndex = mapOf(
+            1000L * 60 to 0, // 1 minute
+            1000L * 60 * 3 to 1, // 3 minutes
+            1000L * 60 * 5 to 2, // 5 minutes
+            1000L * 60 * 10 to 3, // 10 minutes
+            1000L * 60 * 15 to 4 // 15 minutes
+    )
+
+    val durations = durationToBitIndex.keys
+}

app/src/main/java/io/timelimit/android/ui/manage/category/settings/CategorySettingsFragment.kt

@@ -77,6 +77,13 @@ class CategorySettingsFragment : Fragment() {
                 categoryLive = categoryEntry
         )
 
+        CategoryTimeWarningView.bind(
+                view = binding.timeWarnings,
+                auth = auth,
+                categoryLive = categoryEntry,
+                lifecycleOwner = this
+        )
+
         binding.btnDeleteCategory.setOnClickListener { deleteCategory() }
         binding.editCategoryTitleGo.setOnClickListener { renameCategory() }
 

app/src/main/java/io/timelimit/android/ui/manage/category/settings/CategoryTimeWarningView.kt

@@ -0,0 +1,60 @@
+package io.timelimit.android.ui.manage.category.settings
+
+import android.widget.CheckBox
+import androidx.lifecycle.LifecycleOwner
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.Observer
+import io.timelimit.android.data.model.Category
+import io.timelimit.android.data.model.CategoryTimeWarnings
+import io.timelimit.android.databinding.CategoryTimeWarningsViewBinding
+import io.timelimit.android.sync.actions.UpdateCategoryTimeWarningsAction
+import io.timelimit.android.ui.main.ActivityViewModel
+import io.timelimit.android.util.TimeTextUtil
+
+object CategoryTimeWarningView {
+    fun bind(
+            view: CategoryTimeWarningsViewBinding,
+            lifecycleOwner: LifecycleOwner,
+            categoryLive: LiveData<Category?>,
+            auth: ActivityViewModel
+    ) {
+        view.linearLayout.removeAllViews()
+
+        val durationToCheckbox = mutableMapOf<Long, CheckBox>()
+
+        CategoryTimeWarnings.durations.sorted().forEach { duration ->
+            CheckBox(view.root.context).let { checkbox ->
+                checkbox.text = TimeTextUtil.time(duration.toInt(), view.root.context)
+
+                view.linearLayout.addView(checkbox)
+                durationToCheckbox[duration] = checkbox
+            }
+        }
+
+        categoryLive.observe(lifecycleOwner, Observer { category ->
+            durationToCheckbox.entries.forEach { (duration, checkbox) ->
+                checkbox.setOnCheckedChangeListener { _, _ ->  }
+
+                val flag = (1 shl CategoryTimeWarnings.durationToBitIndex[duration]!!)
+                val enable = (category?.timeWarnings ?: 0) and flag != 0
+                checkbox.isChecked = enable
+
+                checkbox.setOnCheckedChangeListener { _, isChecked ->
+                    if (isChecked != enable && category != null) {
+                        if (auth.tryDispatchParentAction(
+                                        UpdateCategoryTimeWarningsAction(
+                                                categoryId = category.id,
+                                                enable = isChecked,
+                                                flags = flag
+                                        )
+                                )) {
+                            // it worked
+                        } else {
+                            checkbox.isChecked = enable
+                        }
+                    }
+                }
+            }
+        })
+    }
+}

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

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <androidx.cardview.widget.CardView
+        app:cardUseCompatPadding="true"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+        <LinearLayout
+            android:orientation="vertical"
+            android:padding="8dp"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                android:text="@string/time_warnings_title"
+                android:textAppearance="?android:textAppearanceLarge"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" />
+
+            <TextView
+                android:text="@string/time_warning_desc"
+                android:textAppearance="?android:textAppearanceMedium"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" />
+
+            <LinearLayout
+                android:orientation="vertical"
+                android:id="@+id/linear_layout"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content">
+                <!-- checkboxes will be added hear -->
+            </LinearLayout>
+
+        </LinearLayout>
+    </androidx.cardview.widget.CardView>
+</layout>

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

@@ -70,6 +70,9 @@
                 </LinearLayout>
             </androidx.cardview.widget.CardView>
 
+            <include android:id="@+id/time_warnings"
+                layout="@layout/category_time_warnings_view" />
+
             <include android:id="@+id/category_for_unassigned_apps"
                 layout="@layout/manage_category_for_unassigned_apps" />
 

app/src/main/res/values-de/strings-category-time-warnings.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  TimeLimit Copyright <C> 2019 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/>.
+-->
+<resources>
+    <string name="time_warnings_title">Zeitwarnung</string>
+    <string name="time_warning_desc">Wenn weniger Zeit als unten ausgewählt übrig ist, dann wird eine Benachrichtigung angezeigt</string>
+</resources>

app/src/main/res/values/strings-category-time-warnings.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  TimeLimit Copyright <C> 2019 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/>.
+-->
+<resources>
+    <string name="time_warnings_title">Time warnings</string>
+    <string name="time_warning_desc">If there is less time remaining than checked below, then a notification will be shown</string>
+</resources>