This is a test feature to develop an easier way for creating new presets and mappaint styles.

<?xml version="1.0" encoding="UTF-8"?>
<presets xmlns="http://josm.openstreetmap.de/tagging-preset-1.0"
  author="Dirk Stöcker"
  version="29"
  shortdescription="One click settings"
  de.shortdescription="Ein-Klick-Einstellungen"
  description="Some additional presets to use with a single click"
  de.description="Einige zusätzliche Vorlagen zur Nutzung mit einem Klick">

  <group name="One click" de.name="Ein Klick" icon="oneclick.png">
    <item name="Oneway" de.name="Einbahnstraße" icon="oneway.png" type="way">
      <key key="oneway" value="yes" />
    </item>
    <item name="Maxspeed 30" de.name="Geschwindigkeit 30" icon="30.png" type="way">
      <key key="maxspeed" value="30" />
    </item>
    <item name="Maxspeed 40" de.name="Geschwindigkeit 40" icon="40.png" type="way">
      <key key="maxspeed" value="40" />
    </item>
    <item name="Maxspeed 50" de.name="Geschwindigkeit 50" icon="50.png" type="way">
      <key key="maxspeed" value="50" />
    </item>
    <item name="Maxspeed 60" de.name="Geschwindigkeit 60" icon="60.png" type="way">
      <key key="maxspeed" value="60" />
    </item>
    <item name="Maxspeed 70" de.name="Geschwindigkeit 70" icon="70.png" type="way">
      <key key="maxspeed" value="70" />
    </item>
    <item name="Maxspeed 80" de.name="Geschwindigkeit 80" icon="80.png" type="way">
      <key key="maxspeed" value="80" />
    </item>
    <item name="Maxspeed 90" de.name="Geschwindigkeit 90" icon="90.png" type="way">
      <key key="maxspeed" value="90" />
    </item>
    <item name="Maxspeed 100" de.name="Geschwindigkeit 100" icon="100.png" type="way">
      <key key="maxspeed" value="100" />
    </item>
    <item name="Maxspeed 110" de.name="Geschwindigkeit 110" icon="110.png" type="way">
      <key key="maxspeed" value="110" />
    </item>
    <item name="Maxspeed 120" de.name="Geschwindigkeit 120" icon="120.png" type="way">
      <key key="maxspeed" value="120" />
    </item>
    <item name="Maxspeed 130" de.name="Geschwindigkeit 130" icon="130.png" type="way">
      <key key="maxspeed" value="130" />
    </item>
    <item name="Bridge" icon="presets/bridge.png" type="way">
      <key key="bridge" value="yes" />
      <key key="layer" value="1" />
    </item>
    <item name="Tunnel" icon="presets/tunnel.png" type="way">
      <key key="tunnel" value="yes" />
      <key key="layer" value="-1" />
    </item>
    <item name="Traffic Signal" icon="presets/traffic-light.png" type="node">
      <key key="highway" value="traffic_signals" />
    </item>
    <item name="Pedestrian Crossing" icon="presets/zebracrossing.png" type="node">
      <key key="highway" value="crossing" />
    </item>
    <item name="Post Box" icon="presets/letter.png" type="node">
      <key key="amenity" value="post_box" />
    </item>
    <item name="Telephone" icon="presets/telephone.png" type="node">
      <key key="amenity" value="telephone" />
    </item>
    <item name="Recycling" icon="presets/recycling.png" type="node,closedway">
      <key key="amenity" value="recycling" />
    </item>
  </group>
</presets>

Presets_OneClick-preset.xml, Presets_OneClick.zip