Merge pull request #3742 from k9mail/selectableItemBackground

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  Copyright 2012 Roman Nurik

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<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/item_pressed" android:state_pressed="true" />

    <item android:drawable="@drawable/item_focused" android:state_focused="true" />

    <item android:drawable="@drawable/item_focused" android:state_selected="true" />

    <item android:drawable="@android:color/transparent" />

</selector>

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:background="?android:attr/selectableItemBackground"

    android:background="?selectableItemBackground"

    android:clickable="true"

    android:focusable="true"

    android:gravity="center_vertical"

                android:focusable="false"

                android:layout_marginRight="3dip"

                android:src="?attr/iconFolder"

                android:background="?android:attr/selectableItemBackground"

                android:background="?selectableItemBackground"

                android:layout_width="wrap_content"

                android:layout_height="fill_parent"

                android:padding="8dp"

        android:id="@+id/client_certificate_spinner_delete"

        android:layout_width="wrap_content"

        android:layout_height="match_parent"

        android:background="?android:attr/selectableItemBackground"

        android:background="?selectableItemBackground"

        android:contentDescription="@string/client_certificate_spinner_delete"

        android:padding="8dp"

        android:src="?attr/iconActionCancel" />

    android:layout_height="32dp"

    android:visibility="gone"

    custom:previewInitialChild="0"

    android:background="@drawable/selectable_item_background"

    android:background="?selectableItemBackground"

    tools:showIn="@layout/message_view_header"

    tools:visibility="visible">