[%#
    Template for handling all manner of statements in TentMaker templates.

    Expects these parameters:

    method_group         - the star in update_*_bool
    name_prefix          - beginning of input element name, this must
                           correspond to the TentMaker.pm update_* method.
    keyword_prefix       - Used in front of the keyword when forming names
                           and the callback parameter.  Include your own
                           trailing double colon.
    single_value         - initial value (singular) for all types
                           ignored if statement.multiple is set
    values               - initial values (plural) for text type when multiple
                           is set
    statement            - hash of legal statements whose keys are below

    keys in the statement hash:

    type                 - pick from: text, textarea, select, boolean,
                           pair, or controlled_boolean
    keyword              - statement's keyword
    default              - what to use if boolean (or controlled_boolean)
                           value is undefined

    multiple             - indicates that more than one value can be given for
                           the keyword (think comma separated list).  Only
                           applies to types text and select.

    pair_labels          - Headings to put over pair entry text boxes.
                           Only applies to type pair.

    false                - the text of the false value for controlled_boolean
                           if no value is given, 'undef' is used
    true                 - similar to false, guess how they differ

    options              - an array of hashes required for type selectone
                           each hash has two keys: value and label

    urgency              - fills in the * in class='urgency_*' this is
                           used for color coding important fields
                           choose from 0, 1, 3, 5, or 10 which are (roughly)
                           white, lt. blue, green, orange, or red

%]
[%   full_key     = "$keyword_prefix$key";
     full_name    = "$name_prefix$key"; %]

[% IF    statement.type == 'textarea'           %]
<textarea name='[% full_name %]'
          cols='50' rows='6'
          class='urgency_[% statement.urgency || 0 %]'
    onblur='javascript:update_tree(
        "[% method_group %]_text",
        "[% full_key %]",
        this.value
    )'
>
    [% single_value || '' %]
</textarea>
[% ELSIF statement.type == 'boolean'            %]
<input type='checkbox'
       value='[% full_name %]'
       name='[% full_name %]'
       class='urgency_[% statement.urgency || 0 %]'
       [%- IF single_value || statement.default == 'true' -%]
       checked='checked'
       [%- END -%]
       onchange='javascript:update_tree(
           "[% method_group %]_bool",
           "[% full_key %]",
           this.checked
       )'
/>
[% ELSIF statement.type == 'controlled_boolean' %]
<input type='checkbox'
       value='[% full_name %]'
       name='[% full_name %]'
       class='urgency_[% statement.urgency || 0 %]'
       [%- IF single_value.defined -%]
           [%- IF single_value == statement.true -%]
                checked='checked'
           [%- END -%]
       [%- ELSIF statement.default == 'true' -%]
           checked='checked'
       [%- END -%]
       onchange='javascript:update_tree(
           "[% method_group %]_bool_controlled",
           "[% full_key %]",
           this.checked, "[% statement.false || 'undef' %]/"
                       + "[% statement.true  || 'undef' %]"
       )'
/>
[% ELSIF statement.type == 'text'               %]
    [% IF statement.multiple %]
        [% FOREACH element IN values %]
            <input type='text'
                name='[% full_name %]'
                value='[% element %]'
                class='urgency_[% statement.urgency || 0 %]'
                onblur='javascript:update_multivalue(
                    "[% method_group %]_text",
                    "[% full_key %]",
                    this
                )'
            />
            <br />
        [% END %]
        [% FOREACH extra_input IN [ 1..2 ] %]
        <input type='text'
            name='[% full_name %]'
            value=''
            class='urgency_[% statement.urgency || 0 %]'
            onblur='javascript:update_multivalue(
                "[% method_group %]_text",
                "[% full_key %]",
                this
            )'
        />
        [% UNLESS loop.last %]<br />[% END %]
        [% END %]
    [% ELSE %]
        <input type='text'
            name='[% full_name %]'
            value='[% single_value %]'
            class='urgency_[% statement.urgency || 0 %]'
            onblur='javascript:update_tree(
                "[% method_group %]_text",
                "[% full_key %]",
                this.value
            )'
        />
    [% END %]
[% ELSIF statement.type == 'select'             %]
    <select [%- IF statement.multiple -%]multiple[%- END -%]
            name='[% full_name %]'
            class='urgency_[% statement.urgency || 0 %]'
            onchange='javascript:
              myvalue = walk_selections( this );
              update_tree(
                "[% method_group %]_text",
                "[% full_key %]",
                myvalue
              )'
    >
    [% FOREACH option IN statement.options %]
        <option value='[% option.value %]'
      [%- IF values.grep( option.value ).0 -%]selected='selected'[%- END -%]
        >
        [% option.label %]
        </option>
    [% END %][%# end of options loop %]
    </select>
[% ELSIF statement.type == 'pair' %]
      <table id='[% full_name %]_input_table'>
        <tr><th> [% statement.pair_labels.0 %] </th>
            <th> [% statement.pair_labels.1 %]
                 [% UNLESS statement.pair_required %]
                    [optional]
                 [% END %]
            </th></tr>
    [% FOREACH existing_value IN values %]
      [% choice_parts = existing_value.split(' => ') %]
      [% pair_urgency = statement.urgency || 0 %]
      [% UNLESS statement.pair_required %]
        [% pair_urgency = 0 %]
      [% END %]
        <tr><td>
                <input
                    type='text'
                    name='[% full_name %]_key'
                    value='[% choice_parts.0 %]'
                    class='urgency_[% statement.urgency || 0 %]'
                    onblur='javascript:update_pairs(
                        "[% method_group %]_pair",
                        "[% full_key %]",
                        this
                    )'
                />
            </td>
            <td>
                <input
                    type='text'
                    name='[% full_name %]_value'
                    value='[% choice_parts.1 %]'
                    class='urgency_[% pair_urgency %]'
                    onblur='javascript:update_pairs(
                        "[% method_group %]_pair",
                        "[% full_key %]",
                        this
                    )'
                />
            </td>
        </tr>
    [% END %]
        <tr><td>
                <input
                    type='text'
                    name='[% full_name %]_key'
                    class='urgency_[% statement.urgency || 0 %]'
                    onblur='javascript:update_pairs(
                        "[% method_group %]_pair",
                        "[% full_key %]",
                        this
                    )'
                />
            </td>
            <td>
                <input
                    type='text'
                    name='[% full_name %]_value'
                    class='urgency_[% pair_urgency %]'
                    onblur='javascript:update_pairs(
                        "[% method_group %]_pair",
                        "[% full_key %]",
                        this
                    )'
                />
            </td>
        </tr>
      </table>
[% ELSE %]
I don't know what to do with:
<pre>
[% USE dumper %][% dumper.dump( statement ) %]
</pre>
[% END %]
