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<%doc>

Example:

  <& /elements/city.html,
       #recommended
       country        => $current_country,
       state          => $current_state,
       county         => $current_county,
       city           => $current_city,

       #optional
       prefix         => $optional_unique_prefix,
       onchange       => $javascript,
       disabled       => 0, #bool
       style          => [ 'attribute:value', 'another:value' ],
       disable_empty  => 1, #defaults to 1, set to 0 to disable the empty option
       empty_label    => 'all', #label for empty option
       disable_text   => 1, # disable the text input (just show the select)
       #doesn't work as an option yet, set when conf tax_district_method
       #disable_select => 1, # disable the selector (just show a text input)
  &>

</%doc>

% if ( $disable_select ) {
<SCRIPT TYPE="text/javascript">
function <% $pre %>county_changed(what, callback) {}
</SCRIPT>
% }
% else {


<% include('/elements/xmlhttp.html',
              'url'  => $p.'misc/cities.cgi',
              'subs' => [ $pre. 'get_cities' ],
           )
%>

<SCRIPT TYPE="text/javascript">

  function opt(what,value,text) {
    var optionName = new Option(text, value, false, false);
    var length = what.length;
    what.options[length] = optionName;
  }

  var saved_<%$pre%>city= '<% $saved_city |h %>';

  function <% $pre %>county_changed(what, callback) {

    what.form.<% $pre %>city_select.disabled = 'disabled';

    county  = what.options[what.selectedIndex].value;
    state   = what.form.<% $pre %>state.options[what.form.<% $pre %>state.selectedIndex].value;
    country = what.form.<% $pre %>country.options[what.form.<% $pre %>country.selectedIndex].value;

    function <% $pre %>update_cities(cities) {

      // blank the current city list
      for ( var i = what.form.<% $pre %>city_select.length; i >= 0; i-- )
          what.form.<% $pre %>city_select.options[i] = null;

%     unless ( $opt{disable_empty} ) {
        opt( what.form.<% $pre %>city_select, '', <% $opt{empty_label} |js_string %> );
%     }

      // add the new cities
      var citiesArray = eval('(' + cities + ')' );

      for ( var s = 0; s < citiesArray.length; s++ ) {
          var cityLabel = citiesArray[s];
          if ( cityLabel == "" )
              cityLabel = '(n/a)';
          opt(what.form.<% $pre %>city_select, citiesArray[s], cityLabel);
      }

     if ( citiesArray.length > 1 || (citiesArray[0] && citiesArray[0].length) ){
        // turn off the text city, turn on the select
        saved_<%$pre%>city = what.form.<%$ pre %>city.value;
        <%$pre%>city_select_changed(what.form.<% $pre %>city_select);
        what.form.<% $pre %>city.style.display = 'none';
        what.form.<% $pre %>city_select.style.display = '';
      } else if ( what.form.<% $pre %>city.style.display == 'none' ) {
        // turn on the text city, turn off the select
        what.form.<%$ pre %>city.value = saved_<%$pre%>city;
        what.form.<% $pre %>city.style.display = '';
        what.form.<% $pre %>city_select.style.display = 'none';
      }

      what.form.<% $pre %>city_select.disabled = '';

      //run the callback
      if ( callback != null )
        callback();
    }

    // go get the new cities
    <% $pre %>get_cities( county, state, country, <% $pre %>update_cities );

  }

  function <%$pre%>city_select_changed(what) {
    what.form.<%$pre%>city.value = what.options[what.selectedIndex].value;
  }

</SCRIPT>

% } #!disable_select

<INPUT TYPE     = "<% $opt{disable_text} ? 'hidden' : 'text' %>"
       NAME     = "<%$pre%>city"
       ID       = "<%$pre%>city"
       VALUE    = "<% $opt{'city'} |h %>"
% unless ( $opt{disable_text} ) {
       onChange = "<% $opt{'onchange'} %>"
       <% $opt{'disabled'} %>
       <% $text_style %>
% }
>

% if ( $disable_select ) {
%# avoid JS errors
    <INPUT TYPE="hidden" ID="city_select">
% } else {

    <SELECT NAME     = "<%$pre%>city_select"
            ID       = "<%$pre%>city_select"
            onChange = "<%$pre%>city_select_changed(this); <% $opt{onchange} %>"
            <% $opt{disabled} %>
            <% $select_style %>
    >

%   unless ( $opt{'disable_empty'} ) {
      <OPTION VALUE="" <% $opt{city} eq '' ? 'SELECTED' : '' %>><% $opt{empty_label} %>
%   }

%   foreach my $city ( @cities ) {

      <OPTION VALUE="<% $city |h %>"
              <% $city eq $opt{city} ? 'SELECTED' : '' %>
      ><% $city eq $opt{empty_data_value} ? $opt{empty_data_label} : $city %>

%   }

    </SELECT>
% }

<%init>

my %opt = @_;

my $pre = $opt{'prefix'};

my $conf = new FS::Conf;
# Using tax_district_method implies that there's not a preloaded city/county
# tax district table.
my $disable_select = 1 if $conf->config('tax_district_method');

$opt{'disable_empty'} = 1 unless exists($opt{'disable_empty'});

my $text_style   = $opt{'style'} ? [ @{ $opt{'style'} } ] : [];
my $select_style = $opt{'style'} ? [ @{ $opt{'style'} } ] : [];

push @$text_style,   @{ $opt{'text_style'} }   if $opt{'text_style'};
push @$select_style, @{ $opt{'select_style'} } if $opt{'select_style'};

my @cities = cities( $opt{'county'}, $opt{'state'}, $opt{'country'} );
my $saved_city = '';
if ( scalar(@cities) > 1 || $cities[0] and !$disable_select ) {
  push @$text_style, 'display:none';
} else {
  push @$select_style, 'display:none';
  $saved_city = $opt{'city'};
}

$text_style =
  scalar(@$text_style)
    ? 'STYLE="'. join(';', @$text_style). '"'
    : '';

$select_style =
  scalar(@$select_style)
    ? 'STYLE="'. join(';', @$select_style). '"'
    : '';

</%init>