'select',
'#title' => t('Automatic reset interval'),
'#required' => FALSE,
'#default_value' => variable_get('demo_reset_interval', 0),
'#options' => $intervals,
'#empty_value' => 0,
'#description' => t('Requires a default snapshot and cron to run in the configured interval.', array(
'@snapshots-url' => url('admin/structure/demo'),
'@cron-url' => url('admin/config/system/cron'),
)),
);
}
/**
* Implements hook_form_FORMID_alter().
*/
function demo_reset_form_demo_manage_form_alter(&$form, &$form_state) {
$form['status']['demo_reset_default'] = array(
'#type' => 'item',
'#title' => t('Default snapshot'),
'#markup' => check_plain(variable_get('demo_dump_cron', t('- None -'))),
);
$demo_dump_cron = variable_get('demo_dump_cron', 'demo_site');
foreach ($form['dump'] as $name => $option) {
if ($name == $demo_dump_cron) {
$form['dump'][$name]['#value'] = $name;
break;
}
}
$form['actions']['cron'] = array(
'#type' => 'submit',
'#value' => t('Use for cron runs'),
'#submit' => array('demo_reset_demo_manage_form_submit'),
);
}
/**
* Form submit handler for demo_manage_form().
*/
function demo_reset_demo_manage_form_submit($form, &$form_state) {
demo_reset_set_default($form_state['values']['filename']);
}
/**
* Sets a specific snapshot as default for cron runs or the site reset block.
*
* @param $filename
* The filename of the snapshot.
*/
function demo_reset_set_default($filename) {
variable_set('demo_dump_cron', $filename);
drupal_set_message(t('Snapshot %title will be used for cron runs.', array('%title' => $filename)));
}
function demo_reset_form_demo_dump_form_alter(&$form, &$form_state) {
$form['dump']['default'] = array(
'#title' => t('Use as default snapshot for cron runs'),
'#type' => 'checkbox',
);
}
/**
* Implements hook_demo_dump().
*/
function demo_reset_demo_dump($options, $info, $fileconfig) {
// Set as new default snapshot.
if (!empty($options['default'])) {
demo_reset_set_default($info['filename']);
}
}
/**
* Implements hook_demo_reset().
*/
function demo_reset_demo_reset($filename, $info, $fileconfig) {
// Reset default dump to load on cron. Normally, this should be the same as
// the original value, but whenever we reset the site to a different snapshot,
// it's very unlikely that we want to reset to the previous snapshot.
variable_set('demo_dump_cron', $info['filename']);
}
/**
* Implements hook_block_list().
*/
function demo_reset_block_info() {
$blocks['reset'] = array(
'info' => t('Demonstration site reset'),
'status' => 1,
'region' => 'sidebar_second',
'cache' => DRUPAL_NO_CACHE,
);
return $blocks;
}
/**
* Implements hook_block_view().
*/
function demo_reset_block_view($delta = '') {
if (!variable_get('demo_dump_cron', '')) {
return array();
}
$block = array(
'subject' => t('Reset demo'),
'content' => drupal_get_form('demo_reset_block_form'),
);
return $block;
}
/**
* Form builder to reset site to configured snapshot.
*
* No access permission check or any condition here. By design.
*/
function demo_reset_block_form($form, &$form_state) {
$form['redirect'] = array(
'#type' => 'value',
'#value' => $_GET['q'],
);
$filename = variable_get('demo_dump_cron', '');
$form['filename'] = array(
'#type' => 'value',
'#value' => $filename,
);
$form['snapshot'] = array(
'#markup' => t('Active snapshot: @snapshot', array('@snapshot' => $filename)),
);
$form['submit'] = array(
'#type' => 'submit',
'#value' => t('Reset now'),
);
return $form;
}
/**
* Form submit handler for demo_reset_block_form().
*/
function demo_reset_block_form_submit($form, &$form_state) {
demo_reset($form_state['values']['filename']);
$form_state['redirect'] = $form_state['values']['redirect'];
}
/**
* Implementation of hook_cron().
*/
function demo_reset_cron() {
if ($interval = variable_get('demo_reset_interval', 0)) {
// See if it's time for a reset.
if ((REQUEST_TIME - $interval) >= variable_get('demo_reset_last', 0)) {
demo_reset(variable_get('demo_dump_cron', 'demo_site'), FALSE);
}
}
}