FairEmail/app/src/main/res/layout/include_message.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <View
        android:id="@+id/vSeparatorAddress"
        android:layout_width="0dp"
        android:layout_height="1dp"
        android:background="?attr/colorSeparator"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:id="@+id/ivExpanderAddress"
        android:layout_width="0dp"
        android:layout_height="24dp"
        android:layout_marginStart="6dp"
        android:layout_marginEnd="6dp"
        android:background="?android:attr/selectableItemBackground"
        android:contentDescription="@string/title_legend_expander"
        android:src="@drawable/expander"
        android:visibility="visible"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/vSeparatorAddress" />

    <include
        android:id="@+id/inAddresses"
        layout="@layout/include_addresses"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="6dp"
        android:layout_marginEnd="6dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/ivExpanderAddress" />

    <View
        android:id="@+id/vSeparatorHeaders"
        android:layout_width="0dp"
        android:layout_height="1dp"
        android:layout_marginStart="6dp"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="6dp"
        android:background="?attr/colorSeparator"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/inAddresses" />

    <TextView
        android:id="@+id/tvHeaders"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="6dp"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="6dp"
        android:fontFamily="monospace"
        android:minHeight="24dp"
        android:text="Headers"
        android:textAppearance="@style/TextAppearance.AppCompat.Small"
        android:textIsSelectable="true"
        android:textSize="12sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/vSeparatorHeaders" />

    <eu.faircode.email.ContentLoadingProgressBar
        android:id="@+id/pbHeaders"
        style="@style/Base.Widget.AppCompat.ProgressBar"
        android:layout_width="24dp"
        android:layout_height="24dp"
        android:indeterminate="true"
        app:layout_constraintBottom_toBottomOf="@id/tvHeaders"
        app:layout_constraintEnd_toEndOf="@id/tvHeaders"
        app:layout_constraintStart_toStartOf="@id/tvHeaders"
        app:layout_constraintTop_toTopOf="@id/tvHeaders" />

    <TextView
        android:id="@+id/tvNoInternetHeaders"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/title_no_internet"
        android:textAppearance="@style/TextAppearance.AppCompat.Small"
        app:layout_constraintBottom_toBottomOf="@id/tvHeaders"
        app:layout_constraintEnd_toEndOf="@id/tvHeaders"
        app:layout_constraintStart_toStartOf="@id/tvHeaders"
        app:layout_constraintTop_toTopOf="@id/tvHeaders" />

    <View
        android:id="@+id/vSeparatorAttachments"
        android:layout_width="0dp"
        android:layout_height="1dp"
        android:layout_marginStart="6dp"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="6dp"
        android:background="?attr/colorSeparator"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/tvHeaders" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/rvAttachment"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="6dp"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="6dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/vSeparatorAttachments" />

    <CheckBox
        android:id="@+id/cbInline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="3dp"
        android:text="@string/title_show_inline"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/rvAttachment" />

    <Button
        android:id="@+id/btnDownloadAttachments"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:minWidth="0dp"
        android:minHeight="0dp"
        android:text="@string/title_download_all"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/cbInline" />

    <Button
        android:id="@+id/btnSaveAttachments"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:minWidth="0dp"
        android:minHeight="0dp"
        android:text="@string/title_save_all"
        app:layout_constraintEnd_toEndOf="@id/rvAttachment"
        app:layout_constraintTop_toBottomOf="@id/cbInline" />

    <androidx.constraintlayout.widget.Barrier
        android:id="@+id/barrier_internet"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:barrierDirection="bottom"
        app:constraint_referenced_ids="btnDownloadAttachments,btnSaveAttachments" />

    <TextView
        android:id="@+id/tvNoInternetAttachments"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="6dp"
        android:layout_marginEnd="6dp"
        android:text="@string/title_no_internet"
        android:textAppearance="@style/TextAppearance.AppCompat.Small"
        app:layout_constraintEnd_toEndOf="@id/rvAttachment"
        app:layout_constraintStart_toStartOf="@id/rvAttachment"
        app:layout_constraintTop_toBottomOf="@id/barrier_internet" />

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/bnvActions"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="3dp"
        android:background="?attr/colorSeparator"
        app:itemIconTint="@color/bottomnav_foreground"
        app:itemTextColor="@color/bottomnav_foreground"
        app:labelVisibilityMode="labeled"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/tvNoInternetAttachments"
        app:menu="@menu/action_message" />

    <ToggleButton
        android:id="@+id/tbHtml"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="6dp"
        android:layout_marginTop="3dp"
        android:minWidth="0dp"
        android:minHeight="0dp"
        android:textOff="@string/title_show_html"
        android:textOn="@string/title_show_formatted"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/bnvActions" />

    <ImageButton
        android:id="@+id/ibImages"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="6dp"
        android:contentDescription="@string/title_legend_show_images"
        android:src="@drawable/baseline_image_24"
        app:layout_constraintEnd_toStartOf="@+id/ibFull"
        app:layout_constraintTop_toBottomOf="@id/bnvActions" />

    <ImageButton
        android:id="@+id/ibFull"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="6dp"
        android:contentDescription="@string/title_legend_show_full"
        android:src="@drawable/baseline_fullscreen_24"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@id/bnvActions" />

    <androidx.constraintlayout.widget.Barrier
        android:id="@+id/barrier_body"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:barrierDirection="bottom"
        app:constraint_referenced_ids="tbHtml,ibImages,ibFull" />

    <eu.faircode.email.ContentLoadingProgressBar
        android:id="@+id/pbBody"
        style="@style/Base.Widget.AppCompat.ProgressBar"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:indeterminate="true"
        android:padding="12dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/barrier_body" />

    <TextView
        android:id="@+id/tvNoInternetBody"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="12dp"
        android:text="@string/title_no_internet"
        android:textAppearance="@style/TextAppearance.AppCompat.Small"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/barrier_body" />

    <TextView
        android:id="@+id/tvBody"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="6dp"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="6dp"
        android:fontFamily="monospace"
        android:minHeight="60dp"
        android:paddingBottom="6dp"
        android:text="Body"
        android:textAppearance="@style/TextAppearance.AppCompat.Small"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/tvNoInternetBody" />

    <androidx.constraintlayout.widget.Group
        android:id="@+id/grpHeaders"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:constraint_referenced_ids="vSeparatorHeaders,tvHeaders" />

    <androidx.constraintlayout.widget.Group
        android:id="@+id/grpAttachments"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:constraint_referenced_ids="vSeparatorAttachments,rvAttachment" />

    <androidx.constraintlayout.widget.Group
        android:id="@+id/grpExpanded"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:constraint_referenced_ids="vSeparatorAddress,ivExpanderAddress,bnvActions" />
</androidx.constraintlayout.widget.ConstraintLayout>