Add category filter for the usage history

app/build.gradle

@@ -143,8 +143,12 @@ android {
     }
 
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_7
+        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_7
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
     }
 }
 
@@ -161,6 +165,7 @@ dependencies {
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.gridlayout:gridlayout:1.0.0'
     implementation "com.google.android.material:material:1.2.1"
+    implementation 'androidx.fragment:fragment-ktx:1.2.5'
 
     implementation "android.arch.navigation:navigation-fragment-ktx:$nav_version"
     implementation "android.arch.navigation:navigation-ui:$nav_version"

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

@@ -28,7 +28,7 @@ abstract class BottomSheetSelectionListDialog: BottomSheetDialogFragment() {
     private lateinit var binding: BottomSheetSelectionListBinding
     private var didClearList = false
 
-    abstract val title: String
+    abstract val title: String?
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         binding = BottomSheetSelectionListBinding.inflate(inflater, container, false)

app/src/main/java/io/timelimit/android/ui/manage/category/usagehistory/SelectUsageHistoryCategoryDialog.kt

@@ -0,0 +1,76 @@
+/*
+ * 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.manage.category.usagehistory
+
+import android.os.Bundle
+import android.view.View
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentManager
+import io.timelimit.android.R
+import io.timelimit.android.extensions.showSafe
+import io.timelimit.android.logic.DefaultAppLogic
+import io.timelimit.android.ui.fragment.BottomSheetSelectionListDialog
+
+class SelectUsageHistoryCategoryDialog: BottomSheetSelectionListDialog() {
+    companion object {
+        private const val USER_ID = "userId"
+        private const val CURRENT_CATEGORY_ID = "currentCategoryId"
+        private const val DIALOG_TAG = "SelectUsageHistoryCategoryDialog"
+
+        fun newInstance(userId: String, currentCategoryId: String?, target: Fragment) = SelectUsageHistoryCategoryDialog().apply {
+            setTargetFragment(target, 0)
+            arguments = Bundle().apply {
+                putString(USER_ID, userId)
+                if (currentCategoryId != null) putString(CURRENT_CATEGORY_ID, currentCategoryId)
+            }
+        }
+    }
+
+    override val title: String? get() = null
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        val userId: String = requireArguments().getString(USER_ID)!!
+        val currentCategoryId: String? = requireArguments().getString(CURRENT_CATEGORY_ID)
+        val target = targetFragment as Listener
+
+        DefaultAppLogic.with(requireContext()).database.category().getCategoriesByChildId(userId).observe(viewLifecycleOwner) { categories ->
+            clearList()
+
+            categories.forEach {
+                addListItem(
+                        label = it.title,
+                        checked = it.id == currentCategoryId,
+                        click = { target.onCategoryFilterSelected(it.id); dismiss() }
+                )
+            }
+
+            addListItem(
+                    labelRes = R.string.usage_history_filter_all_categories,
+                    checked = currentCategoryId == null,
+                    click = { target.onAllCategoriesSelected(); dismiss() }
+            )
+        }
+    }
+
+    fun show(fragmentManager: FragmentManager) = showSafe(fragmentManager, DIALOG_TAG)
+
+    interface Listener {
+        fun onAllCategoriesSelected()
+        fun onCategoryFilterSelected(categoryId: String)
+    }
+}

app/src/main/java/io/timelimit/android/ui/manage/category/usagehistory/UsageHistoryFragment.kt

@@ -20,13 +20,12 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
-import androidx.lifecycle.Observer
+import androidx.fragment.app.viewModels
-import androidx.paging.LivePagedListBuilder
 import androidx.recyclerview.widget.LinearLayoutManager
+import io.timelimit.android.R
 import io.timelimit.android.databinding.FragmentUsageHistoryBinding
-import io.timelimit.android.logic.DefaultAppLogic
 
-class UsageHistoryFragment : Fragment() {
+class UsageHistoryFragment : Fragment(), SelectUsageHistoryCategoryDialog.Listener {
     companion object {
         private const val USER_ID = "userId"
         private const val CATEGORY_ID = "categoryId"
@@ -39,30 +38,44 @@ class UsageHistoryFragment : Fragment() {
         }
     }
 
+    private val model: UsageHistoryModel by viewModels()
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         val binding = FragmentUsageHistoryBinding.inflate(inflater, container, false)
-        val database = DefaultAppLogic.with(context!!).database
         val adapter = UsageHistoryAdapter()
-        val userId = requireArguments().getString(USER_ID)!!
-        val categoryId = requireArguments().getString(CATEGORY_ID)
 
-        adapter.showCategoryTitle = categoryId == null
+        if (requireArguments().getString(CATEGORY_ID) != null) {
+            binding.selectCategoryButton.visibility = View.GONE
+        }
 
-        LivePagedListBuilder(
+        if (!model.didInit) {
-                categoryId?.let { database.usedTimes().getUsedTimeListItemsByCategoryId(it) }
+            model.userId.value = requireArguments().getString(USER_ID)!!
-                        ?: database.usedTimes().getUsedTimeListItemsByUserId(userId),
+            model.categoryId.value = requireArguments().getString(CATEGORY_ID)
-                10
+
-        )
+            model.didInit = true
-                .build()
+        }
-                .observe(viewLifecycleOwner, Observer {
+
+        model.categoryId.observe(viewLifecycleOwner) { adapter.showCategoryTitle = it == null }
+        model.selectedCategoryName.observe(viewLifecycleOwner) { binding.selectCategoryButton.text = it ?: getString(R.string.usage_history_filter_all_categories) }
+        model.listContent.observe(viewLifecycleOwner) {
             binding.isEmpty = it.isEmpty()
             adapter.submitList(it)
-                })
+        }
 
         binding.recycler.adapter = adapter
         binding.recycler.layoutManager = LinearLayoutManager(context)
 
+        binding.selectCategoryButton.setOnClickListener {
+            SelectUsageHistoryCategoryDialog.newInstance(
+                    userId = model.userId.value!!,
+                    currentCategoryId = model.categoryId.value,
+                    target = this
+            ).show(parentFragmentManager)
+        }
+
         return binding.root
     }
+
+    override fun onAllCategoriesSelected() { model.categoryId.value = null }
+    override fun onCategoryFilterSelected(categoryId: String) { model.categoryId.value = categoryId }
 }

app/src/main/java/io/timelimit/android/ui/manage/category/usagehistory/UsageHistoryModel.kt

@@ -0,0 +1,59 @@
+/*
+ * 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.manage.category.usagehistory
+
+import android.app.Application
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.MutableLiveData
+import androidx.paging.LivePagedListBuilder
+import io.timelimit.android.livedata.liveDataFromValue
+import io.timelimit.android.livedata.map
+import io.timelimit.android.livedata.switchMap
+import io.timelimit.android.logic.DefaultAppLogic
+
+class UsageHistoryModel(application: Application): AndroidViewModel(application) {
+    private val database = DefaultAppLogic.with(application).database
+
+    var didInit = false
+
+    val userId = MutableLiveData<String>()
+    val categoryId = MutableLiveData<String?>()
+
+    val listContent = userId.switchMap { userId ->
+        categoryId.switchMap { categoryId ->
+            val items = if (categoryId == null) {
+                database.usedTimes().getUsedTimeListItemsByUserId(userId)
+            } else {
+                database.usedTimes().getUsedTimeListItemsByCategoryId(categoryId)
+            }
+
+            LivePagedListBuilder(items, 10).build()
+        }
+    }
+
+    val selectedCategoryName = userId.switchMap { userId ->
+        categoryId.switchMap { categoryId ->
+            if (categoryId == null)
+                liveDataFromValue(null as String?)
+            else
+                database.category().getCategoryByChildIdAndId(childId = userId, categoryId = categoryId).map {
+                    if (it == null) this.categoryId.value = null
+
+                    it?.title
+                }
+        }
+    }
+}

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

@@ -27,6 +27,7 @@
             type="boolean" />
 
         <import type="android.view.View" />
+        <import type="android.text.TextUtils" />
     </data>
 
     <androidx.core.widget.NestedScrollView
@@ -40,6 +41,7 @@
             android:layout_height="wrap_content">
 
             <TextView
+                android:visibility="@{TextUtils.isEmpty(title) ? View.GONE : View.VISIBLE}"
                 android:textAppearance="?android:textAppearanceLarge"
                 android:padding="8dp"
                 android:text="@{title}"

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

@@ -1,5 +1,5 @@
 <!--
-  TimeLimit Copyright <C> 2019 Jonas Lochmann
+  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.
@@ -24,6 +24,19 @@
         <import type="android.view.View" />
     </data>
 
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <Button
+            android:id="@+id/select_category_button"
+            tools:text="Alle Kategorien"
+            android:drawableEnd="@drawable/ic_baseline_expand_more_24"
+            style="?borderlessButtonStyle"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
         <FrameLayout
             android:layout_width="match_parent"
             android:layout_height="match_parent">
@@ -64,4 +77,5 @@
             </RelativeLayout>
 
         </FrameLayout>
+    </LinearLayout>
 </layout>

app/src/main/res/values-de/strings-usage-history.xml

@@ -23,4 +23,5 @@
     <string name="usage_history_time_area">von %s bis %s</string>
     <string name="usage_history_item_session_duration_limit">Sitzungsdauerbegrenzung von %s mit %s Pause</string>
     <string name="usage_history_item_last_usage">Letzte Verwendung: %s</string>
+    <string name="usage_history_filter_all_categories">Alle Kategorien</string>
 </resources>

app/src/main/res/values/strings-usage-history.xml

@@ -13,7 +13,7 @@
   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>
+<resources xmlns:tools="http://schemas.android.com/tools">
     <string name="usage_history_title">Usage history</string>
     <string name="usage_history_empty_title">There is no usage history</string>
     <string name="usage_history_empty_text">
@@ -24,4 +24,5 @@
     <string name="usage_history_time_area">from %s until %s</string>
     <string name="usage_history_item_session_duration_limit">Session duration limit of %s with %s break</string>
     <string name="usage_history_item_last_usage">Last usage: %s</string>
+    <string name="usage_history_filter_all_categories" tools:ignore="MissingTranslation">All Categories</string>
 </resources>