direct_messages_content.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:id="@+id/main_container"
	android:layout_width="match_parent"
	android:layout_height="match_parent">

	<LinearLayout
		android:id="@+id/left_pane_layer"
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		android:baselineAligned="false"
		android:orientation="horizontal">

		<org.mariotaku.twidere.view.ExtendedFrameLayout
			android:id="@+id/left_pane_container"
			android:layout_width="0dp"
			android:layout_height="match_parent"
			android:layout_weight="@integer/pane_left_content_weight">

			<FrameLayout
				android:id="@+id/main"
				android:layout_width="match_parent"
				android:layout_height="match_parent">

				<ListView
					android:id="@android:id/list"
					android:layout_width="match_parent"
					android:layout_height="match_parent"
					android:layerType="software"/>
			</FrameLayout>

			<FrameLayout
				android:id="@+id/left_pane"
				android:layout_width="match_parent"
				android:layout_height="match_parent"/>
		</org.mariotaku.twidere.view.ExtendedFrameLayout>

		<View
			android:layout_width="0dp"
			android:layout_height="match_parent"
			android:layout_weight="@integer/pane_left_shadow_weight"
			android:background="@drawable/two_panes_shadow_left"/>
	</LinearLayout>

	<LinearLayout
		android:id="@+id/right_pane_layer"
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		android:baselineAligned="false"
		android:orientation="horizontal">

		<View
			android:layout_width="0dp"
			android:layout_height="match_parent"
			android:layout_weight="@integer/pane_right_shadow_weight"
			android:background="@drawable/two_panes_shadow_right"/>

		<org.mariotaku.twidere.view.ExtendedFrameLayout
			android:id="@+id/right_pane_container"
			android:layout_width="0dp"
			android:layout_height="match_parent"
			android:layout_weight="@integer/pane_right_content_weight">

			<FrameLayout
				android:id="@+id/right_pane"
				android:layout_width="match_parent"
				android:layout_height="match_parent"/>
		</org.mariotaku.twidere.view.ExtendedFrameLayout>
	</LinearLayout>

</FrameLayout>