Updated hide fragment with more robust filtering UI

app/src/main/java/com/topjohnwu/magisk/redesign/hide/HideFragment.kt

@@ -2,9 +2,8 @@ package com.topjohnwu.magisk.redesign.hide
 
 import android.content.Context
 import android.graphics.Insets
-import android.view.Menu
-import android.view.MenuInflater
-import android.view.MenuItem
+import android.os.Bundle
+import android.view.View
 import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.databinding.FragmentHideMd2Binding
 import com.topjohnwu.magisk.redesign.compat.CompatFragment
@@ -20,16 +19,14 @@ class HideFragment : CompatFragment<HideViewModel, FragmentHideMd2Binding>() {
     override fun onAttach(context: Context) {
         super.onAttach(context)
         activity.setTitle(R.string.magiskhide)
-        setHasOptionsMenu(true)
     }
 
-    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
-        inflater.inflate(R.menu.menu_hide_md2, menu)
-        menu.findItem(R.id.action_show_system)?.isChecked = viewModel.isShowSystem
-    }
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
 
-    override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        return viewModel.menuItemPressed(item)
+        binding.hideActionScrollUp.setOnClickListener {
+            binding.hideScrollContainer.fullScroll(View.FOCUS_UP)
+        }
     }
 
 }

app/src/main/java/com/topjohnwu/magisk/redesign/hide/HideViewModel.kt

@@ -1,12 +1,14 @@
 package com.topjohnwu.magisk.redesign.hide
 
 import android.content.pm.ApplicationInfo
-import android.view.MenuItem
+import android.os.Handler
+import android.os.Looper
+import androidx.databinding.Bindable
 import com.topjohnwu.magisk.BR
-import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.data.repository.MagiskRepository
 import com.topjohnwu.magisk.databinding.ComparableRvItem
 import com.topjohnwu.magisk.extensions.subscribeK
+import com.topjohnwu.magisk.extensions.toggle
 import com.topjohnwu.magisk.model.entity.HideAppInfo
 import com.topjohnwu.magisk.model.entity.HideTarget
 import com.topjohnwu.magisk.model.entity.ProcessHideApp
@@ -19,18 +21,31 @@ import com.topjohnwu.magisk.utils.DiffObservableList
 import com.topjohnwu.magisk.utils.FilterableDiffObservableList
 import com.topjohnwu.magisk.utils.KObservableField
 import com.topjohnwu.magisk.utils.currentLocale
+import io.reactivex.Single
+import io.reactivex.android.schedulers.AndroidSchedulers
 
 class HideViewModel(
     private val magiskRepo: MagiskRepository
 ) : CompatViewModel() {
 
+    private val queryHandler = Handler(Looper.getMainLooper())
+    private val queryRunnable = Runnable { query() }
+
     var isShowSystem = false
+        @Bindable get
         set(value) {
             field = value
+            notifyPropertyChanged(BR.showSystem)
             query()
         }
 
-    val query = KObservableField("")
+    var query = ""
+        @Bindable get
+        set(value) {
+            field = value
+            notifyPropertyChanged(BR.query)
+            submitQuery()
+        }
     val items = filterableListOf<HideItem>()
     val itemBinding = itemBindingOf<HideItem> {
         it.bindExtra(BR.viewModel, this)
@@ -39,6 +54,8 @@ class HideViewModel(
         it.bindExtra(BR.viewModel, this)
     }
 
+    val isFilterExpanded = KObservableField(false)
+
     override fun refresh() = magiskRepo.fetchApps()
         .map { it to magiskRepo.fetchHideTargets().blockingGet() }
         .map { pair -> pair.first.map { mergeAppTargets(it, pair.second) } }
@@ -70,8 +87,13 @@ class HideViewModel(
 
     // ---
 
+    private fun submitQuery() {
+        queryHandler.removeCallbacks(queryRunnable)
+        queryHandler.postDelayed(queryRunnable, 1000)
+    }
+
     private fun query(
-        query: String = this.query.value,
+        query: String = this.query,
         showSystem: Boolean = isShowSystem
     ) = items.filter {
         fun filterSystem(): Boolean {
@@ -90,18 +112,22 @@ class HideViewModel(
 
     // ---
 
-    fun menuItemPressed(menuItem: MenuItem) = when (menuItem.itemId) {
-        R.id.action_show_system -> isShowSystem = (!menuItem.isChecked)
-            .also { menuItem.isChecked = it }
-        else -> null
-    }?.let { true } ?: false
-
     fun toggleItem(item: HideProcessItem) = magiskRepo
         .toggleHide(item.isHidden.value, item.item.packageName, item.item.name)
         // might wanna reorder the list to display the item at the top
         .subscribeK()
         .add()
 
+    fun toggle(item: KObservableField<Boolean>) = item.toggle()
+
+    fun resetQuery() {
+        query = ""
+    }
+
+    fun hideFilter() {
+        isFilterExpanded.value = false
+    }
+
 }
 
 inline fun <T : ComparableRvItem<T>> filterableListOf(

app/src/main/java/com/topjohnwu/magisk/utils/DataBindingAdapters.kt

@@ -15,6 +15,7 @@ import androidx.appcompat.widget.AppCompatImageView
 import androidx.appcompat.widget.Toolbar
 import androidx.core.animation.doOnEnd
 import androidx.core.view.*
+import androidx.core.widget.NestedScrollView
 import androidx.databinding.BindingAdapter
 import androidx.databinding.InverseBindingAdapter
 import androidx.databinding.InverseBindingListener
@@ -26,6 +27,7 @@ import androidx.recyclerview.widget.RecyclerView
 import androidx.viewpager.widget.ViewPager
 import com.google.android.material.button.MaterialButton
 import com.google.android.material.card.MaterialCardView
+import com.google.android.material.chip.Chip
 import com.google.android.material.floatingactionbutton.FloatingActionButton
 import com.google.android.material.navigation.NavigationView
 import com.google.android.material.textfield.TextInputLayout
@@ -410,4 +412,21 @@ fun Toolbar.setOnMenuClickListener(listener: Toolbar.OnMenuItemClickListener) {
 @BindingAdapter("tooltipText")
 fun View.setTooltipTextCompat(text: String) {
     ViewCompat.setTooltipText(this, text)
+}
+
+@BindingAdapter("onCloseClicked")
+fun Chip.setOnCloseClickedListenerBinding(listener: View.OnClickListener) {
+    setOnCloseIconClickListener(listener)
+}
+
+@BindingAdapter("onScrollStateChanged")
+fun NestedScrollView.setOnScrollStateChangeListener(listener: Runnable) {
+    setOnScrollChangeListener { _: NestedScrollView?, _: Int, _: Int, _: Int, _: Int ->
+        if (!handler.hasCallbacks(listener)) {
+            listener.run()
+        } else {
+            handler.removeCallbacksAndMessages(null)
+        }
+        handler.postDelayed(listener, 1000)
+    }
 }

app/src/main/res/drawable/ic_filter.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?colorOnSurface"
+        android:pathData="M6,13H18V11H6M3,6V8H21V6M10,18H14V16H10V18Z"
+        tools:fillColor="@android:color/black" />
+</vector>

app/src/main/res/drawable/ic_search_md2.xml

@@ -0,0 +1,18 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="475.084"
+    android:viewportHeight="475.084">
+
+    <group
+        android:pivotX="237.542"
+        android:pivotY="237.542"
+        android:scaleX="0.8"
+        android:scaleY="0.8">
+        <path
+            android:fillColor="?colorOnSurface"
+            android:pathData="M464.524,412.846l-97.929,-97.925c23.6,-34.068 35.406,-72.047 35.406,-113.917c0,-27.218 -5.284,-53.249 -15.852,-78.087c-10.561,-24.842 -24.838,-46.254 -42.825,-64.241c-17.987,-17.987 -39.396,-32.264 -64.233,-42.826C254.246,5.285 228.217,0.003 200.999,0.003c-27.216,0 -53.247,5.282 -78.085,15.847C98.072,26.412 76.66,40.689 58.673,58.676c-17.989,17.987 -32.264,39.403 -42.827,64.241C5.282,147.758 0,173.786 0,201.004c0,27.216 5.282,53.238 15.846,78.083c10.562,24.838 24.838,46.247 42.827,64.234c17.987,17.993 39.403,32.264 64.241,42.832c24.841,10.563 50.869,15.844 78.085,15.844c41.879,0 79.852,-11.807 113.922,-35.405l97.929,97.641c6.852,7.231 15.406,10.849 25.693,10.849c9.897,0 18.467,-3.617 25.694,-10.849c7.23,-7.23 10.848,-15.796 10.848,-25.693C475.088,428.458 471.567,419.889 464.524,412.846zM291.363,291.358c-25.029,25.033 -55.148,37.549 -90.364,37.549c-35.21,0 -65.329,-12.519 -90.36,-37.549c-25.031,-25.029 -37.546,-55.144 -37.546,-90.36c0,-35.21 12.518,-65.334 37.546,-90.36c25.026,-25.032 55.15,-37.546 90.36,-37.546c35.212,0 65.331,12.519 90.364,37.546c25.033,25.026 37.548,55.15 37.548,90.36C328.911,236.214 316.392,266.329 291.363,291.358z"
+            tools:fillColor="@android:color/black" />
+    </group>
+</vector>

app/src/main/res/drawable/ic_up_md2.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?colorOnSurface"
+        android:pathData="M16.59,9.42L12,4.83L7.41,9.42L6,8L12,2L18,8L16.59,9.42M16.59,15.42L12,10.83L7.41,15.42L6,14L12,8L18,14L16.59,15.42M16.59,21.42L12,16.83L7.41,21.42L6,20L12,14L18,20L16.59,21.42Z" />
+</vector>

app/src/main/res/layout/fragment_hide_md2.xml

@@ -17,22 +17,137 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
-        <androidx.recyclerview.widget.RecyclerView
-            dividerVertical="@{R.drawable.divider_l1}"
-            invisibleUnless="@{viewModel.loaded || !viewModel.items.empty}"
-            itemBinding="@{viewModel.itemBinding}"
-            items="@{viewModel.items}"
+        <androidx.core.widget.NestedScrollView
+            android:id="@+id/hide_scroll_container"
+            onScrollStateChanged="@{() -> viewModel.hideFilter()}"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:clipToPadding="false"
-            android:orientation="vertical"
-            android:paddingStart="@dimen/l1"
+            android:fillViewport="true"
             android:paddingTop="@{viewModel.insets.top + (int) @dimen/internal_action_bar_size + (int) @dimen/l1}"
-            android:paddingEnd="@dimen/l1"
             android:paddingBottom="@{viewModel.insets.bottom}"
-            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
-            tools:listitem="@layout/item_hide_md2"
-            tools:paddingTop="40dp" />
+            tools:paddingTop="40dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:orientation="vertical">
+
+                <com.google.android.material.card.MaterialCardView
+                    style="?styleCardVariant"
+                    android:layout_width="match_parent"
+
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="@dimen/l1"
+                    android:layout_marginEnd="@dimen/l1">
+
+                    <androidx.constraintlayout.widget.ConstraintLayout
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content">
+
+                        <androidx.appcompat.widget.AppCompatImageView
+                            android:id="@+id/hide_filter_icon"
+                            style="?styleIconNormal"
+                            android:onClick="@{() -> viewModel.toggle(viewModel.isFilterExpanded)}"
+                            app:layout_constraintEnd_toEndOf="parent"
+                            app:layout_constraintTop_toTopOf="parent"
+                            app:srcCompat="@drawable/ic_filter" />
+
+                        <com.google.android.material.chip.ChipGroup
+                            android:id="@+id/hide_filter_chip_group"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:paddingStart="@dimen/l_50"
+                            android:paddingEnd="0dp"
+                            app:chipSpacing="2dp"
+                            app:layout_constraintBottom_toBottomOf="@+id/hide_filter_barrier"
+                            app:layout_constraintEnd_toStartOf="@+id/hide_filter_icon"
+                            app:layout_constraintStart_toStartOf="parent"
+                            app:layout_constraintTop_toTopOf="parent">
+
+                            <com.google.android.material.chip.Chip
+                                style="@style/Widget.MaterialComponents.Chip.Filter"
+                                android:layout_width="wrap_content"
+                                android:layout_height="wrap_content"
+                                android:checked="@={viewModel.showSystem}"
+                                android:text="@string/show_system_app"
+                                android:textAppearance="?appearanceTextCaptionNormal" />
+
+                            <com.google.android.material.chip.Chip
+                                style="@style/Widget.MaterialComponents.Chip.Entry"
+                                gone="@{viewModel.query.empty}"
+                                onCloseClicked="@{() -> viewModel.resetQuery()}"
+                                android:layout_width="wrap_content"
+                                android:layout_height="wrap_content"
+                                android:checkable="false"
+                                android:text="@{viewModel.query}"
+                                android:textAppearance="?appearanceTextCaptionNormal" />
+
+                        </com.google.android.material.chip.ChipGroup>
+
+                        <androidx.constraintlayout.widget.Barrier
+                            android:id="@+id/hide_filter_barrier"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            app:barrierDirection="bottom"
+                            app:constraint_referenced_ids="hide_filter_icon,hide_filter_chip_group" />
+
+                        <com.google.android.material.card.MaterialCardView
+                            android:id="@+id/hide_filter_search"
+                            style="?styleCardNormal"
+                            goneUnless="@{viewModel.isFilterExpanded}"
+                            android:layout_width="match_parent"
+                            android:layout_height="wrap_content"
+                            android:layout_margin="@dimen/l1"
+                            android:visibility="gone"
+                            app:layout_constraintBottom_toBottomOf="parent"
+                            app:layout_constraintTop_toBottomOf="@+id/hide_filter_barrier"
+                            tools:visibility="visible">
+
+                            <androidx.appcompat.widget.AppCompatImageView
+                                style="?styleIconNormal"
+                                app:srcCompat="@drawable/ic_search_md2"
+                                app:tint="?colorDisabled" />
+
+                            <androidx.appcompat.widget.AppCompatEditText
+                                android:layout_width="match_parent"
+                                android:layout_height="wrap_content"
+                                android:layout_marginStart="48dp"
+                                android:background="@null"
+                                android:hint="@string/hide_filter_hint"
+                                android:inputType="textUri"
+                                android:minHeight="48dp"
+                                android:paddingStart="0dp"
+                                android:paddingEnd="@dimen/l1"
+                                android:singleLine="true"
+                                android:text="@={viewModel.query}"
+                                android:textAppearance="?appearanceTextBodyNormal" />
+
+                        </com.google.android.material.card.MaterialCardView>
+
+                    </androidx.constraintlayout.widget.ConstraintLayout>
+
+                </com.google.android.material.card.MaterialCardView>
+
+                <androidx.recyclerview.widget.RecyclerView
+                    dividerVertical="@{R.drawable.divider_l1}"
+                    invisibleUnless="@{viewModel.loaded || !viewModel.items.empty}"
+                    itemBinding="@{viewModel.itemBinding}"
+                    items="@{viewModel.items}"
+                    nestedScrollingEnabled="@{false}"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:layout_marginTop="@dimen/l1"
+                    android:clipToPadding="false"
+                    android:orientation="vertical"
+                    android:paddingStart="@dimen/l1"
+                    android:paddingEnd="@dimen/l1"
+                    app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+                    tools:listitem="@layout/item_hide_md2" />
+
+            </LinearLayout>
+
+        </androidx.core.widget.NestedScrollView>
 
         <LinearLayout
             goneUnless="@{viewModel.loading &amp;&amp; viewModel.items.empty}"
@@ -55,6 +170,18 @@
 
         </LinearLayout>
 
+        <com.google.android.material.floatingactionbutton.FloatingActionButton
+            android:id="@+id/hide_action_scroll_up"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="bottom|end"
+            android:layout_marginEnd="@dimen/l1"
+            android:layout_marginBottom="@{viewModel.insets.bottom + (int) @dimen/l1}"
+            app:backgroundTint="?colorSurface"
+            app:srcCompat="@drawable/ic_up_md2"
+            app:tint="?colorOnSurface"
+            tools:layout_marginBottom="64dp" />
+
     </FrameLayout>
 
 </layout>

app/src/main/res/menu/menu_hide_md2.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-    <item
-        android:id="@+id/action_show_system"
-        android:checkable="true"
-        android:title="@string/show_system_app"
-        app:showAsAction="never" />
-</menu>

app/src/main/res/values/strings_md2.xml

@@ -79,4 +79,6 @@
     <string name="superuser_toggle_notification">Toggles “toast” notifications</string>
     <string name="superuser_toggle_revoke">Revoke</string>
 
+    <string name="hide_filter_hint">Filter by name</string>
+
 </resources>