<?php
// $Id$

/**
 * @file
 * Goto functionality and form handling, springs to one issue
 */

/**
 * Goto form
 */
function issue_tracker_goto_form(&$form_state) {
  $form['issue_id'] = array(
    '#type' => 'textfield',
    '#required' => FALSE,
    '#size' => 10,
    '#executes_submit_callback' => TRUE,
    '#element_validate' => array('issue_tracker_goto_field_validate'),
  );

  $form['submit'] = array(
    '#type' => 'hidden',
    '#value' => t('x'),
  );

  return $form;
}

/**
  * Goto form validation
 */
function issue_tracker_goto_field_validate($element, &$form_state) {
  // assert integer value
  if (!ctype_digit($element['#value'])) {
    form_error($element, t('Enter an integer value'));
  }
}

/**
  * Goto form submit handler
 */
function issue_tracker_goto_form_submit($form, &$form_state) {
  $input_id = (int)$form_state['values']['issue_id'];

  $result = db_query('SELECT * from {issues} where `issue_id` = %d', $input_id);
  $row = db_fetch_object($result);

  if ((bool)$row == FALSE) {
    drupal_set_message(t('Issue #'. $input_id .' does not exist.'));
  }
  else {
    drupal_goto('issues/'. $input_id);
  }
}