fgdata/gui/dialogs/location-on-ground.xml

<?xml version="1.0"?>

<PropertyList>
  <name>location-on-ground</name>
  <layout>vbox</layout>

  <text>
    <label>Set New Location</label>
  </text>

  <hrule/>

  <nasal>
    <open>
      var dlg = props.globals.getNode("/sim/gui/dialogs/location-on-ground", 1);
      var apt = dlg.getNode("airport", 1);
      apt.setValue("");
      var rwy = dlg.getNode("runway", 1);
      rwy.setValue("");
      var parkpos = dlg.getNode("parkpos", 1);
      parkpos.setValue("");
      
      var mode = {
        runway:  dlg.getNode("use_runway", 1),
        parkpos: dlg.getNode("use_parkpos", 1)
      };

      var set_radio = func(m) {
        foreach (k; keys(mode)) {
          mode[k].setBoolValue(m == k);
        }
      }

      var initialized = 0;
      foreach (k; keys(mode)) {
        if (mode[k].getType() == "NONE" or initialized) {
          mode[k].setBoolValue(0);
        } else {
          initialized += mode[k].getBoolValue();
        }
      }
      if (!initialized) {
        set_radio("runway");
      }
    </open>
  </nasal>

  <group>
    <layout>table</layout>
    <halign>center</halign>
    <text>
      <row>0</row><col>1</col>
      <halign>right</halign>
      <label>Airport:</label>
    </text>
    <input>
      <row>0</row><col>2</col>
      <property>/sim/gui/dialogs/location-on-ground/airport</property>
    </input>

    <radio>
      <row>1</row><col>0</col>
      <property>/sim/gui/dialogs/location-on-ground/use_runway</property>
      <live>true</live>
      <binding>
        <command>nasal</command>
        <script>set_radio("runway")</script>
      </binding>
    </radio>
    <text>
      <row>1</row><col>1</col>
      <halign>right</halign>
      <label>Runway:</label>
    </text>
    <input>
      <row>1</row><col>2</col>
      <property>/sim/gui/dialogs/location-on-ground/runway</property>
    </input>
    <radio>
      <row>2</row><col>0</col>
      <property>/sim/gui/dialogs/location-on-ground/use_parkpos</property>
      <live>true</live>
      <binding>
        <command>nasal</command>
        <script>set_radio("parkpos")</script>
      </binding>
    </radio>
    <text>
      <row>2</row><col>1</col>
      <halign>right</halign>
      <label>Parking:</label>
    </text>
    <input>
      <row>2</row><col>2</col>
      <property>/sim/gui/dialogs/location-on-ground/parkpos</property>
    </input>
  </group>

  <group>
    <layout>hbox</layout>
    <default-padding>10</default-padding>
    <empty><stretch>true</stretch></empty>

    <button>
      <legend>OK</legend>
      <default>true</default>
      <equal>true</equal>
      <binding>
        <command>dialog-apply</command>
      </binding>
      <binding>
        <command>nasal</command>
        <script>
          setprop("/sim/presets/airport-id", apt.getValue());
          if (mode["runway"].getBoolValue()) {
            setprop("/sim/presets/runway", rwy.getValue());
            setprop("/sim/presets/parkpos", "");
          } else {
            setprop("/sim/presets/runway", "");
            setprop("/sim/presets/parkpos", parkpos.getValue());
          }
          setprop("/sim/presets/longitude-deg", -9999);
          setprop("/sim/presets/latitude-deg", -9999);
          setprop("/sim/presets/altitude-ft", -9999);
          setprop("/sim/presets/airspeed-kt", 0);
          setprop("/sim/presets/offset-distance-nm", 0);
          setprop("/sim/presets/offset-azimuth-nm", 0);
          setprop("/sim/presets/glideslope-deg", 0);
          setprop("/sim/presets/heading-deg", 9999);
        </script>
      </binding>
      <binding>
        <command>presets-commit</command>
      </binding>
      <binding>
        <command>dialog-close</command>
      </binding>
    </button>

    <empty><stretch>true</stretch></empty>

    <button>
      <legend>Cancel</legend>
      <equal>true</equal>
      <key>Esc</key>
      <binding>
        <command>dialog-close</command>
      </binding>
    </button>

    <empty><stretch>true</stretch></empty>
  </group>
</PropertyList>