rewrite hidden icons adapter so that we can unhide icons

app/src/main/kotlin/com/simplemobiletools/launcher/activities/HiddenIconsActivity.kt

@@ -46,8 +46,7 @@ class HiddenIconsActivity : SimpleActivity() {
             }
 
             runOnUiThread {
-                HiddenIconsAdapter(this, hiddenIcons) {
-
+                HiddenIconsAdapter(this, hiddenIcons, manage_hidden_icons_list) {
                 }.apply {
                     manage_hidden_icons_list.adapter = this
                 }

app/src/main/kotlin/com/simplemobiletools/launcher/adapters/HiddenIconsAdapter.kt

@@ -1,45 +1,70 @@
 package com.simplemobiletools.launcher.adapters
 
-import android.view.LayoutInflater
+import android.view.Menu
 import android.view.View
 import android.view.ViewGroup
-import androidx.recyclerview.widget.RecyclerView
 import com.bumptech.glide.Glide
 import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions
 import com.bumptech.glide.request.transition.DrawableCrossFadeFactory
-import com.simplemobiletools.commons.extensions.getProperTextColor
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
 import com.simplemobiletools.commons.extensions.portrait
 import com.simplemobiletools.commons.extensions.realScreenSize
+import com.simplemobiletools.commons.views.MyRecyclerView
 import com.simplemobiletools.launcher.R
-import com.simplemobiletools.launcher.activities.SimpleActivity
 import com.simplemobiletools.launcher.models.HiddenIcon
 import kotlinx.android.synthetic.main.item_hidden_icon.view.*
 
 class HiddenIconsAdapter(
-    val activity: SimpleActivity,
+    activity: BaseSimpleActivity,
     var hiddenIcons: ArrayList<HiddenIcon>,
-    val itemClick: (Any) -> Unit
-) : RecyclerView.Adapter<HiddenIconsAdapter.ViewHolder>() {
+    recyclerView: MyRecyclerView,
+    itemClick: (Any) -> Unit
+) : MyRecyclerViewAdapter(activity, recyclerView, itemClick) {
 
-    private var textColor = activity.getProperTextColor()
     private var iconPadding = 0
 
     init {
         calculateIconWidth()
     }
 
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_hidden_icon, parent, false)
-        return ViewHolder(view)
+    override fun getActionMenuId() = R.menu.cab_hidden_icons
+
+    override fun prepareActionMode(menu: Menu) {}
+
+    override fun actionItemPressed(id: Int) {
+        when (id) {
+            R.id.cab_unhide_icon -> unHideSelection()
+        }
     }
 
+    override fun getSelectableItemCount() = hiddenIcons.size
+
+    override fun getIsItemSelectable(position: Int) = true
+
+    override fun getItemSelectionKey(position: Int) = hiddenIcons.getOrNull(position)?.hashCode()
+
+    override fun getItemKeyPosition(key: Int) = hiddenIcons.indexOfFirst { it.hashCode() == key }
+
+    override fun onActionModeCreated() {}
+
+    override fun onActionModeDestroyed() {}
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = createViewHolder(R.layout.item_hidden_icon, parent)
+
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        holder.bindView(hiddenIcons[position])
+        val folder = hiddenIcons[position]
+        holder.bindView(folder, true, true) { itemView, adapterPosition ->
+            setupView(itemView, folder)
+        }
+        bindViewHolder(holder)
     }
 
     override fun getItemCount() = hiddenIcons.size
 
+    private fun unHideSelection() {}
+
     private fun calculateIconWidth() {
         val currentColumnCount = activity.resources.getInteger(
             if (activity.portrait) {
@@ -53,27 +78,20 @@ class HiddenIconsAdapter(
         iconPadding = (iconWidth * 0.1f).toInt()
     }
 
-    inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
-        fun bindView(icon: HiddenIcon): View {
-            itemView.apply {
-                hidden_icon_label.text = icon.title
-                hidden_icon_label.setTextColor(textColor)
-                hidden_icon.setPadding(iconPadding, iconPadding, iconPadding, 0)
+    private fun setupView(view: View, icon: HiddenIcon) {
+        view.apply {
+            hidden_icon_holder?.isSelected = selectedKeys.contains(icon.hashCode())
+            hidden_icon_label.text = icon.title
+            hidden_icon_label.setTextColor(textColor)
+            hidden_icon.setPadding(iconPadding, iconPadding, iconPadding, 0)
 
-                val factory = DrawableCrossFadeFactory.Builder(150).setCrossFadeEnabled(true).build()
+            val factory = DrawableCrossFadeFactory.Builder(150).setCrossFadeEnabled(true).build()
 
-                Glide.with(activity)
-                    .load(icon.drawable)
-                    .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
-                    .transition(DrawableTransitionOptions.withCrossFade(factory))
-                    .into(hidden_icon)
-
-                setOnClickListener {
-                    itemClick(icon)
-                }
-            }
-
-            return itemView
+            Glide.with(activity)
+                .load(icon.drawable)
+                .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
+                .transition(DrawableTransitionOptions.withCrossFade(factory))
+                .into(hidden_icon)
         }
     }
 }

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

@@ -15,7 +15,7 @@
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:background="@color/color_primary"
-            app:title="@string/manage_hidden_icons"
+            app:title="@string/hidden_icons"
             app:titleTextAppearance="@style/AppTheme.ActionBar.TitleTextStyle" />
 
     </com.google.android.material.appbar.AppBarLayout>

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

@@ -6,6 +6,7 @@
     android:background="?attr/selectableItemBackground"
     android:clickable="true"
     android:focusable="true"
+    android:foreground="@drawable/selector"
     android:paddingStart="@dimen/small_margin"
     android:paddingTop="@dimen/medium_margin"
     android:paddingEnd="@dimen/small_margin"

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

@@ -0,0 +1,9 @@
+<?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/cab_unhide_icon"
+        android:icon="@drawable/ic_unhide_vector"
+        android:title="@string/unhide"
+        app:showAsAction="always" />
+</menu>