class views_handler_argument_numeric

class views_handler_argument_numeric extends views_handler_argument {
    
    /**
     * The operator used for the query: or|and.
     *
     * @var string
     */
    public $operator;
    
    /**
     * The actual value which is used for querying.
     *
     * @var array
     */
    public $value;
    
    /**
     * {@inheritdoc}
     */
    public function option_definition() {
        $options = parent::option_definition();
        $options['break_phrase'] = array(
            'default' => FALSE,
            'bool' => TRUE,
        );
        $options['not'] = array(
            'default' => FALSE,
            'bool' => TRUE,
        );
        return $options;
    }
    
    /**
     * {@inheritdoc}
     */
    public function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);
        // Allow + for or, , for and.
        $form['break_phrase'] = array(
            '#type' => 'checkbox',
            '#title' => t('Allow multiple values'),
            '#description' => t('If selected, users can enter multiple values in the form of 1+2+3 (for OR) or 1,2,3 (for AND).'),
            '#default_value' => !empty($this->options['break_phrase']),
            '#fieldset' => 'more',
        );
        $form['not'] = array(
            '#type' => 'checkbox',
            '#title' => t('Exclude'),
            '#description' => t('If selected, the numbers entered for the filter will be excluded rather than limiting the view.'),
            '#default_value' => !empty($this->options['not']),
            '#fieldset' => 'more',
        );
    }
    
    /**
     * {@inheritdoc}
     */
    public function title() {
        if (!$this->argument) {
            return !empty($this->definition['empty field name']) ? $this->definition['empty field name'] : t('Uncategorized');
        }
        if (!empty($this->options['break_phrase'])) {
            views_break_phrase($this->argument, $this);
        }
        else {
            $this->value = array(
                $this->argument,
            );
            $this->operator = 'or';
        }
        if (empty($this->value)) {
            return !empty($this->definition['empty field name']) ? $this->definition['empty field name'] : t('Uncategorized');
        }
        if ($this->value === array(
            -1,
        )) {
            return !empty($this->definition['invalid input']) ? $this->definition['invalid input'] : t('Invalid input');
        }
        return implode($this->operator == 'or' ? ' + ' : ', ', $this->title_query());
    }
    
    /**
     * Override for specific title lookups.
     *
     * @return array
     *   Returns all titles, if it's just one title it's an array with one entry.
     */
    public function title_query() {
        return $this->value;
    }
    
    /**
     * {@inheritdoc}
     */
    public function query($group_by = FALSE) {
        $this->ensure_my_table();
        if (!empty($this->options['break_phrase'])) {
            views_break_phrase($this->argument, $this);
        }
        else {
            $this->value = array(
                $this->argument,
            );
        }
        $placeholder = $this->placeholder();
        $null_check = empty($this->options['not']) ? '' : "OR {$this->table_alias}.{$this->real_field} IS NULL";
        if (count($this->value) > 1) {
            $operator = empty($this->options['not']) ? 'IN' : 'NOT IN';
            $this->query
                ->add_where_expression(0, "{$this->table_alias}.{$this->real_field} {$operator}({$placeholder}) {$null_check}", array(
                $placeholder => $this->value,
            ));
        }
        else {
            $operator = empty($this->options['not']) ? '=' : '!=';
            $this->query
                ->add_where_expression(0, "{$this->table_alias}.{$this->real_field} {$operator} {$placeholder} {$null_check}", array(
                $placeholder => $this->argument,
            ));
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function get_sort_name() {
        return t('Numerical', array(), array(
            'context' => 'Sort order',
        ));
    }

}