For #4007 - Use camelCase for views referenced from code

As per #4341.
Also reformatted layouts to have a more consistent style.
Also refactored `AppShareRecyclerView` and `AccountDevicesShareRecyclerView` by
defining their LayoutManager in XML to reduce code complexity.

app/src/main/java/org/mozilla/fenix/share/AccountDevicesShareView.kt

@@ -6,12 +6,10 @@ package org.mozilla.fenix.share
 
 import android.content.Context
 import android.graphics.PorterDuff.Mode.SRC_IN
-import android.util.AttributeSet
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.core.content.ContextCompat
-import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import io.reactivex.Observer
 import kotlinx.android.synthetic.main.account_share_list_item.view.*
@@ -21,17 +19,6 @@ import mozilla.components.concept.sync.DeviceType
 import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.components
 
-class AccountDevicesShareRecyclerView @JvmOverloads constructor(
-    context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : RecyclerView(context, attrs, defStyleAttr) {
-
-    init {
-        layoutManager = LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
-    }
-}
-
 class AccountDevicesShareAdapter(
     private val context: Context,
     val actionEmitter: Observer<ShareAction>
@@ -141,12 +128,12 @@ class AccountDeviceViewHolder(
             }
         }
 
-        itemView.device_icon.apply {
+        itemView.deviceIcon.apply {
             setImageResource(drawableRes)
             background.setColorFilter(ContextCompat.getColor(context, colorRes), SRC_IN)
             drawable.setTint(ContextCompat.getColor(context, R.color.device_foreground))
         }
-        itemView.device_name.text = name
+        itemView.deviceName.text = name
     }
 
     companion object {

app/src/main/java/org/mozilla/fenix/share/AppShareView.kt

@@ -9,11 +9,9 @@ import android.content.Intent
 import android.content.Intent.ACTION_SEND
 import android.content.Intent.FLAG_ACTIVITY_NEW_TASK
 import android.graphics.drawable.Drawable
-import android.util.AttributeSet
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import io.reactivex.Observer
 import kotlinx.android.synthetic.main.app_share_list_item.view.*
@@ -24,17 +22,6 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.mozilla.fenix.R
 
-class AppShareRecyclerView @JvmOverloads constructor(
-    context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : RecyclerView(context, attrs, defStyleAttr) {
-
-    init {
-        layoutManager = GridLayoutManager(context, 2, GridLayoutManager.HORIZONTAL, false)
-    }
-}
-
 class AppShareAdapter(
     private val context: Context,
     val actionEmitter: Observer<ShareAction>,
@@ -109,8 +96,8 @@ class AppShareItemViewHolder(
 
     internal fun bind(item: ShareItem) {
         shareItem = item
-        itemView.app_name.text = item.name
+        itemView.appName.text = item.name
-        itemView.app_icon.setImageDrawable(item.icon)
+        itemView.appIcon.setImageDrawable(item.icon)
     }
 
     companion object {

app/src/main/java/org/mozilla/fenix/share/ShareUIView.kt

@@ -32,23 +32,22 @@ class ShareUIView(
         val adapter = AppShareAdapter(view.context, actionEmitter).also {
             it.registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
                 override fun onChanged() {
-                    progress_bar.visibility = View.GONE
+                    progressBar.visibility = View.GONE
-                    intent_handler_recyclerview.visibility = View.VISIBLE
+                    appsList.visibility = View.VISIBLE
                 }
             })
         }
-        intent_handler_recyclerview.adapter = adapter
+        appsList.adapter = adapter
 
         if (view.context.components.backgroundServices.accountManager.accountNeedsReauth()) {
-            send_tab_group.visibility = View.GONE
+            sendTabGroup.visibility = View.GONE
-            account_header.visibility = View.GONE
+            accountHeaderText.visibility = View.GONE
         } else {
-            account_devices_recyclerview.adapter =
+            devicesList.adapter = AccountDevicesShareAdapter(view.context, actionEmitter)
-                AccountDevicesShareAdapter(view.context, actionEmitter)
         }
 
         container.setOnClickListener { actionEmitter.onNext(ShareAction.Close) }
-        close_button.setOnClickListener { actionEmitter.onNext(ShareAction.Close) }
+        closeButton.setOnClickListener { actionEmitter.onNext(ShareAction.Close) }
     }
 
     override fun updateView() = Consumer<ShareState> {

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

@@ -2,44 +2,45 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
 <androidx.constraintlayout.widget.ConstraintLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    android:background="?selectableItemBackgroundBorderless"
     android:layout_width="76dp"
-    android:layout_height="80dp">
+    android:layout_height="80dp"
+    android:background="?selectableItemBackgroundBorderless">
 
     <ImageButton
+        android:id="@+id/deviceIcon"
         android:layout_width="40dp"
         android:layout_height="40dp"
-        android:id="@+id/device_icon"
-        android:importantForAccessibility="no"
         android:layout_marginTop="8dp"
         android:background="@drawable/device_background"
         android:clickable="false"
         android:focusable="false"
-        app:layout_constraintTop_toTopOf="parent"
+        android:importantForAccessibility="no"
-        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintBottom_toTopOf="@+id/deviceName"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintBottom_toTopOf="@+id/device_name"
+        app:layout_constraintStart_toStartOf="parent"
-        tools:srcCompat="@tools:sample/avatars"/>
+        app:layout_constraintTop_toTopOf="parent"
+        tools:srcCompat="@tools:sample/avatars" />
 
     <TextView
+        android:id="@+id/deviceName"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:id="@+id/device_name"
-        android:textSize="10sp"
-        android:textAlignment="gravity"
-        android:gravity="center|top"
-        android:ellipsize="end"
-        android:lines="2"
         android:layout_marginTop="3dp"
         android:layout_marginBottom="5dp"
+        android:ellipsize="end"
+        android:gravity="center|top"
+        android:lines="2"
+        android:textAlignment="gravity"
+        android:textSize="10sp"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/device_icon"
+        app:layout_constraintStart_toStartOf="parent"
-        tools:text="Firefox on Macbook Pro"/>
+        app:layout_constraintTop_toBottomOf="@id/deviceIcon"
+        tools:text="Firefox on Macbook Pro" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -2,41 +2,42 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
 <androidx.constraintlayout.widget.ConstraintLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    android:background="?selectableItemBackgroundBorderless"
     android:layout_width="76dp"
-    android:layout_height="80dp">
+    android:layout_height="80dp"
+    android:background="?selectableItemBackgroundBorderless">
 
     <ImageView
+        android:id="@+id/appIcon"
         android:layout_width="40dp"
         android:layout_height="40dp"
-        android:id="@+id/app_icon"
-        android:importantForAccessibility="no"
         android:layout_marginTop="8dp"
-        app:layout_constraintTop_toTopOf="parent"
+        android:importantForAccessibility="no"
-        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/appName"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintBottom_toTopOf="@+id/app_name"
+        app:layout_constraintStart_toStartOf="parent"
-        tools:srcCompat="@tools:sample/avatars"/>
+        app:layout_constraintTop_toTopOf="parent"
+        tools:srcCompat="@tools:sample/avatars" />
 
     <TextView
+        android:id="@+id/appName"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:id="@+id/app_name"
-        android:textSize="10sp"
-        android:textAlignment="gravity"
-        android:gravity="center|top"
-        android:ellipsize="end"
-        android:lines="2"
         android:layout_marginTop="3dp"
         android:layout_marginBottom="5dp"
+        android:ellipsize="end"
+        android:gravity="center|top"
+        android:lines="2"
+        android:textAlignment="gravity"
+        android:textSize="10sp"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/app_icon"
+        app:layout_constraintStart_toStartOf="parent"
-        tools:text="Copy to clipboard"/>
+        app:layout_constraintTop_toBottomOf="@id/appIcon"
+        tools:text="Copy to clipboard" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -2,6 +2,7 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
 <androidx.constraintlayout.widget.ConstraintLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
@@ -10,22 +11,6 @@
     android:layout_height="match_parent"
     android:clipToPadding="false">
 
-    <com.google.android.material.button.MaterialButton
-        android:id="@+id/close_button"
-        style="@style/Widget.MaterialComponents.Button.TextButton"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_margin="16dp"
-        android:text="@string/share_header"
-        android:textAppearance="@style/HeaderTextStyle"
-        android:textColor="@color/neutral_text"
-        android:textSize="20sp"
-        app:icon="@drawable/mozac_ic_close"
-        app:iconPadding="8dp"
-        app:iconTint="@color/neutral_text"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
-
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
@@ -35,48 +20,16 @@
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent">
 
-        <androidx.constraintlayout.widget.Group
+        <ProgressBar
-            android:id="@+id/send_tab_group"
+            android:id="@+id/progressBar"
-            android:layout_width="wrap_content"
+            android:layout_width="76dp"
-            android:layout_height="wrap_content"
+            android:layout_height="37dp"
-            app:constraint_referenced_ids="account_header,account_devices_recyclerview,divider_line" />
+            android:layout_marginTop="16dp"
-
+            android:layout_marginBottom="16dp"
-        <TextView
+            app:layout_constraintBottom_toBottomOf="parent"
-            android:id="@+id/account_header"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="16dp"
-            android:layout_marginTop="12dp"
-            android:singleLine="true"
-            android:text="@string/share_device_subheader"
-            android:textAllCaps="true"
-            android:textColor="?secondaryText"
-            android:textSize="12sp"
-            android:textStyle="bold"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
-
-        <org.mozilla.fenix.share.AccountDevicesShareRecyclerView
-            android:id="@+id/account_devices_recyclerview"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_marginBottom="8dp"
-            android:clipToPadding="false"
-            android:paddingStart="16dp"
-            android:paddingEnd="8dp"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/account_header" />
+            app:layout_constraintTop_toBottomOf="@id/link_header" />
-
-        <View
-            android:id="@+id/divider_line"
-            android:layout_width="fill_parent"
-            android:layout_height="1dp"
-            android:layout_marginTop="8dp"
-            android:background="?neutralFaded"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/account_devices_recyclerview" />
 
         <TextView
             android:id="@+id/link_header"
@@ -91,32 +44,85 @@
             android:textSize="12sp"
             android:textStyle="bold"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/divider_line" />
+            app:layout_constraintTop_toBottomOf="@id/divider_line" />
 
-        <ProgressBar
+        <TextView
-            android:id="@+id/progress_bar"
+            android:id="@+id/accountHeaderText"
-            android:layout_width="76dp"
+            android:layout_width="wrap_content"
-            android:layout_height="37dp"
+            android:layout_height="wrap_content"
-            android:layout_marginTop="16dp"
+            android:layout_marginStart="16dp"
-            android:layout_marginBottom="16dp"
+            android:layout_marginTop="12dp"
-            app:layout_constraintBottom_toBottomOf="parent"
+            android:singleLine="true"
+            android:text="@string/share_device_subheader"
+            android:textAllCaps="true"
+            android:textColor="?secondaryText"
+            android:textSize="12sp"
+            android:textStyle="bold"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <View
+            android:id="@+id/divider_line"
+            android:layout_width="fill_parent"
+            android:layout_height="1dp"
+            android:layout_marginTop="8dp"
+            android:background="?neutralFaded"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/link_header" />
+            app:layout_constraintTop_toBottomOf="@id/devicesList" />
 
-        <org.mozilla.fenix.share.AppShareRecyclerView
+        <androidx.constraintlayout.widget.Group
-            android:id="@+id/intent_handler_recyclerview"
+            android:id="@+id/sendTabGroup"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:constraint_referenced_ids="accountHeaderText,devicesList,divider_line" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/devicesList"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginBottom="8dp"
             android:clipToPadding="false"
+            android:orientation="horizontal"
+            android:paddingStart="16dp"
+            android:paddingEnd="8dp"
+            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/accountHeaderText" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/appsList"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="8dp"
+            android:clipToPadding="false"
+            android:orientation="horizontal"
             android:paddingStart="16dp"
             android:paddingEnd="8dp"
             android:visibility="gone"
+            app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/link_header" />
+            app:layout_constraintTop_toBottomOf="@id/link_header"
+            app:spanCount="2" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/closeButton"
+        style="@style/Widget.MaterialComponents.Button.TextButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:text="@string/share_header"
+        android:textAppearance="@style/HeaderTextStyle"
+        android:textColor="@color/neutral_text"
+        android:textSize="20sp"
+        app:icon="@drawable/mozac_ic_close"
+        app:iconPadding="8dp"
+        app:iconTint="@color/neutral_text"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -3,14 +3,12 @@
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/shareWrapper"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="@drawable/scrim_background"
     android:fitsSystemWindows="true"
-    tools:context="org.mozilla.fenix.share.ShareFragment">
+    tools:context="org.mozilla.fenix.share.ShareFragment" />
-
-
-</FrameLayout>