Signal-Android/app/src/main/res/layout/keyboard_pager_search_bar.xml

<?xml version="1.0" encoding="utf-8"?>
<merge 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:layout_width="match_parent"
    android:layout_height="wrap_content"
    tools:parentTag="androidx.constraintlayout.widget.ConstraintLayout">

    <FrameLayout
        android:id="@+id/emoji_search_nav"
        android:layout_width="45dp"
        android:layout_height="0dp"
        android:layout_marginStart="16dp"
        android:background="@drawable/search_bar_start"
        android:paddingStart="7dp"
        app:layout_constraintBottom_toBottomOf="@id/emoji_search_entry"
        app:layout_constraintEnd_toStartOf="@id/emoji_search_entry"
        app:layout_constraintHorizontal_chainStyle="packed"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/emoji_search_entry"
        tools:ignore="RtlSymmetry">

        <androidx.appcompat.widget.AppCompatImageView
            android:id="@+id/emoji_search_nav_icon"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="?selectableItemBackgroundBorderless"
            android:clickable="false"
            android:contentDescription="@string/KeyboardPagerfragment_back_to_emoji"
            android:scaleType="centerInside"
            app:srcCompat="@drawable/ic_search_24"
            app:tint="@color/signal_icon_tint_primary" />

    </FrameLayout>

    <FrameLayout
        android:id="@+id/emoji_search_clear"
        android:layout_width="45dp"
        android:layout_height="0dp"
        android:layout_marginEnd="16dp"
        android:background="@drawable/search_bar_end"
        android:paddingEnd="7dp"
        app:layout_constraintBottom_toBottomOf="@id/emoji_search_entry"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/emoji_search_entry"
        app:layout_constraintTop_toTopOf="@id/emoji_search_entry"
        tools:ignore="RtlSymmetry">

        <androidx.appcompat.widget.AppCompatImageView
            android:id="@+id/emoji_search_clear_icon"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="?selectableItemBackgroundBorderless"
            android:clickable="false"
            android:contentDescription="@string/KeyboardPagerfragment_clear_search_entry"
            android:scaleType="centerInside"
            app:tint="@color/signal_icon_tint_primary"
            tools:srcCompat="@drawable/ic_x" />

    </FrameLayout>

    <org.thoughtcrime.securesms.components.emoji.EmojiEditText
        android:id="@+id/emoji_search_entry"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:background="@color/signal_background_primary"
        android:inputType="textNoSuggestions"
        android:maxLines="1"
        android:minHeight="40dp"
        android:paddingStart="7dp"
        android:paddingEnd="7dp"
        android:textSize="16sp"
        app:layout_constraintEnd_toStartOf="@id/emoji_search_clear"
        app:layout_constraintStart_toEndOf="@id/emoji_search_nav"
        app:layout_constraintTop_toTopOf="parent"
        tools:hint="@string/KeyboardPagerFragment_search_emoji" />

    <FrameLayout
        android:id="@+id/keyboard_search_click_only"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</merge>