class views_handler_field_numeric

class views_handler_field_numeric extends views_handler_field {
    
    /**
     * {@inheritdoc}
     */
    public function option_definition() {
        $options = parent::option_definition();
        $options['set_precision'] = array(
            'default' => FALSE,
            'bool' => TRUE,
        );
        $options['precision'] = array(
            'default' => 0,
        );
        $options['decimal'] = array(
            'default' => '.',
            'translatable' => TRUE,
        );
        $options['separator'] = array(
            'default' => ',',
            'translatable' => TRUE,
        );
        $options['format_plural'] = array(
            'default' => FALSE,
            'bool' => TRUE,
        );
        $options['format_plural_singular'] = array(
            'default' => '1',
            'translatable' => TRUE,
        );
        $options['format_plural_plural'] = array(
            'default' => '@count',
            'translatable' => TRUE,
        );
        $options['prefix'] = array(
            'default' => '',
            'translatable' => TRUE,
        );
        $options['suffix'] = array(
            'default' => '',
            'translatable' => TRUE,
        );
        return $options;
    }
    
    /**
     * {@inheritdoc}
     */
    public function options_form(&$form, &$form_state) {
        if (!empty($this->definition['float'])) {
            $form['set_precision'] = array(
                '#type' => 'checkbox',
                '#title' => t('Round'),
                '#description' => t('If checked, the number will be rounded.'),
                '#default_value' => $this->options['set_precision'],
            );
            $form['precision'] = array(
                '#type' => 'textfield',
                '#title' => t('Precision'),
                '#default_value' => $this->options['precision'],
                '#description' => t('Specify how many digits to print after the decimal point.'),
                '#dependency' => array(
                    'edit-options-set-precision' => array(
                        TRUE,
                    ),
                ),
                '#size' => 2,
            );
            $form['decimal'] = array(
                '#type' => 'textfield',
                '#title' => t('Decimal point'),
                '#default_value' => $this->options['decimal'],
                '#description' => t('What single character to use as a decimal point.'),
                '#size' => 2,
            );
        }
        $form['separator'] = array(
            '#type' => 'select',
            '#title' => t('Thousands marker'),
            '#options' => array(
                '' => t('- None -'),
                ',' => t('Comma'),
                ' ' => t('Space'),
                '.' => t('Decimal'),
                '\'' => t('Apostrophe'),
            ),
            '#default_value' => $this->options['separator'],
            '#description' => t('What single character to use as the thousands separator.'),
            '#size' => 2,
        );
        $form['format_plural'] = array(
            '#type' => 'checkbox',
            '#title' => t('Format plural'),
            '#description' => t('If checked, special handling will be used for plurality.'),
            '#default_value' => $this->options['format_plural'],
        );
        $form['format_plural_singular'] = array(
            '#type' => 'textfield',
            '#title' => t('Singular form'),
            '#default_value' => $this->options['format_plural_singular'],
            '#description' => t('Text to use for the singular form.'),
            '#dependency' => array(
                'edit-options-format-plural' => array(
                    TRUE,
                ),
            ),
        );
        $form['format_plural_plural'] = array(
            '#type' => 'textfield',
            '#title' => t('Plural form'),
            '#default_value' => $this->options['format_plural_plural'],
            '#description' => t('Text to use for the plural form, @count will be replaced with the value.'),
            '#dependency' => array(
                'edit-options-format-plural' => array(
                    TRUE,
                ),
            ),
        );
        $form['prefix'] = array(
            '#type' => 'textfield',
            '#title' => t('Prefix'),
            '#default_value' => $this->options['prefix'],
            '#description' => t('Text to put before the number, such as currency symbol.'),
        );
        $form['suffix'] = array(
            '#type' => 'textfield',
            '#title' => t('Suffix'),
            '#default_value' => $this->options['suffix'],
            '#description' => t('Text to put after the number, such as currency symbol.'),
        );
        parent::options_form($form, $form_state);
    }
    
    /**
     * {@inheritdoc}
     */
    public function render($values) {
        $value = $this->get_value($values);
        // Output nothing if the value is null.
        if (is_null($value)) {
            return '';
        }
        // Hiding should happen before rounding or adding prefix/suffix.
        if ($this->options['hide_empty'] && empty($value) && ($value !== 0 || $this->options['empty_zero'])) {
            return '';
        }
        if (!empty($this->options['set_precision'])) {
            $value = number_format($value, $this->options['precision'], $this->options['decimal'], $this->options['separator']);
        }
        else {
            // Only accept numerical values.
            $value = isset($value) && is_numeric($value) ? $value : 0;
            $point_position = strpos($value, '.');
            $remainder = $point_position === FALSE ? '' : substr($value, $point_position + 1);
            $value = $value > 0 ? floor((double) $value) : ceil((double) $value);
            $value = number_format($value, 0, '', $this->options['separator']);
            if ($remainder) {
                // The substr may not be locale safe.
                $value .= $this->options['decimal'] . $remainder;
            }
        }
        // Should we format as a plural.
        if (!empty($this->options['format_plural'])) {
            $value = format_plural($value, $this->options['format_plural_singular'], $this->options['format_plural_plural']);
        }
        return $this->sanitize_value($this->options['prefix'], 'xss') . $this->sanitize_value($value) . $this->sanitize_value($this->options['suffix'], 'xss');
    }

}