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<?php
// $Id: trigger.admin.inc,v 1.5 2008/01/08 10:35:43 goba Exp $
/**
* @file
* Admin page callbacks for the trigger module.
*/
/**
* Build the form that allows users to assign actions to hooks.
*
* @param $type
* Name of hook.
* @return
* HTML form.
*/
function trigger_assign($type = NULL) {
// If no type is specified we default to node actions, since they
// are the most common.
if (!isset($type)) {
drupal_goto('admin/build/trigger/node');
}
if ($type == 'node') {
$type = 'nodeapi';
}
$output = '';
$hooks = module_invoke_all('hook_info');
foreach ($hooks as $module => $hook) {
if (isset($hook[$type])) {
foreach ($hook[$type] as $op => $description) {
$form_id = 'trigger_'. $type .'_'. $op .'_assign_form';
$output .= drupal_get_form($form_id, $type, $op, $description['runs when']);
}
}
}
return $output;
}
/**
* Confirm removal of an assigned action.
*
* @param $hook
* @param $op
* @param $aid
* The action ID.
* @ingroup forms
* @see trigger_unassign_submit()
*/
function trigger_unassign($form_state, $hook = NULL, $op = NULL, $aid = NULL) {
if (!($hook && $op && $aid)) {
drupal_goto('admin/build/trigger/assign');
}
$form['hook'] = array(
'#type' => 'value',
'#value' => $hook,
);
$form['operation'] = array(
'#type' => 'value',
'#value' => $op,
);
$form['aid'] = array(
'#type' => 'value',
'#value' => $aid,
);
$action = actions_function_lookup($aid);
$actions = actions_get_all_actions();
$destination = 'admin/build/trigger/'. ($hook == 'nodeapi' ? 'node' : $hook);
return confirm_form($form,
t('Are you sure you want to unassign the action %title?', array('%title' => $actions[$action]['description'])),
$destination,
t('You can assign it again later if you wish.'),
t('Unassign'), t('Cancel')
);
}
function trigger_unassign_submit($form, &$form_state) {
$form_values = $form_state['values'];
if ($form_values['confirm'] == 1) {
$aid = actions_function_lookup($form_values['aid']);
db_query("DELETE FROM {trigger_assignments} WHERE hook = '%s' AND op = '%s' AND aid = '%s'", $form_values['hook'], $form_values['operation'], $aid);
$actions = actions_get_all_actions();
watchdog('actions', 'Action %action has been unassigned.', array('%action' => check_plain($actions[$aid]['description'])));
drupal_set_message(t('Action %action has been unassigned.', array('%action' => $actions[$aid]['description'])));
$hook = $form_values['hook'] == 'nodeapi' ? 'node' : $form_values['hook'];
$form_state['redirect'] = 'admin/build/trigger/'. $hook;
}
else {
drupal_goto('admin/build/trigger');
}
}
/**
* Create the form definition for assigning an action to a hook-op combination.
*
* @param $form_state
* Information about the current form.
* @param $hook
* The name of the hook, e.g., 'nodeapi'.
* @param $op
* The name of the hook operation, e.g., 'insert'.
* @param $description
* A plain English description of what this hook operation does.
* @return
*
* @ingoup forms
* @see trigger_assign_form_validate()
* @see trigger_assign_form_submit()
*/
function trigger_assign_form($form_state, $hook, $op, $description) {
$form['hook'] = array(
'#type' => 'hidden',
'#value' => $hook,
);
$form['operation'] = array(
'#type' => 'hidden',
'#value' => $op,
);
// All of these forms use the same validate and submit functions.
$form['#validate'][] = 'trigger_assign_form_validate';
$form['#submit'][] = 'trigger_assign_form_submit';
$options = array();
$functions = array();
// Restrict the options list to actions that declare support for this hook-op
// combination.
foreach (actions_list() as $func => $metadata) {
if (isset($metadata['hooks']['any']) || (isset($metadata['hooks'][$hook]) && is_array($metadata['hooks'][$hook]) && (in_array($op, $metadata['hooks'][$hook])))) {
$functions[] = $func;
}
}
foreach (actions_actions_map(actions_get_all_actions()) as $aid => $action) {
if (in_array($action['callback'], $functions)) {
$options[$action['type']][$aid] = $action['description'];
}
}
$form[$op] = array(
'#type' => 'fieldset',
'#title' => t('Trigger: ') . $description,
'#theme' => 'trigger_display'
);
// Retrieve actions that are already assigned to this hook-op combination.
$actions = _trigger_get_hook_actions($hook, $op);
$form[$op]['assigned']['#type'] = 'value';
$form[$op]['assigned']['#value'] = array();
foreach ($actions as $aid => $description) {
$form[$op]['assigned']['#value'][$aid] = array(
'description' => $description,
'link' => l(t('unassign'), "admin/build/trigger/unassign/$hook/$op/". md5($aid))
);
}
$form[$op]['parent'] = array(
'#prefix' => "<div class='container-inline'>",
'#suffix' => '</div>',
);
// List possible actions that may be assigned.
if (count($options) != 0) {
array_unshift($options, t('Choose an action'));
$form[$op]['parent']['aid'] = array(
'#type' => 'select',
'#options' => $options,
);
$form[$op]['parent']['submit'] = array(
'#type' => 'submit',
'#value' => t('Assign')
);
}
else {
$form[$op]['none'] = array(
'#value' => t('No available actions for this trigger.')
);
}
return $form;
}
/**
* Validation function for trigger_assign_form().
*
* Makes sure that the user is not re-assigning an action to an event.
*/
function trigger_assign_form_validate($form, $form_state) {
$form_values = $form_state['values'];
if (!empty($form_values['aid'])) {
$aid = actions_function_lookup($form_values['aid']);
if (db_result(db_query("SELECT aid FROM {trigger_assignments} WHERE hook = '%s' AND op = '%s' AND aid = '%s'", $form_values['hook'], $form_values['operation'], $aid))) {
form_set_error($form_values['operation'], t('The action you chose is already assigned to that trigger.'));
}
}
}
/**
* Submit function for trigger_assign_form().
*/
function trigger_assign_form_submit($form, $form_state) {
$form_values = $form_state['values'];
if (!empty($form_values['aid'])) {
$aid = actions_function_lookup($form_values['aid']);
$weight = db_result(db_query("SELECT MAX(weight) FROM {trigger_assignments} WHERE hook = '%s' AND op = '%s'", $form_values['hook'], $form_values['operation']));
db_query("INSERT INTO {trigger_assignments} values ('%s', '%s', '%s', %d)", $form_values['hook'], $form_values['operation'], $aid, $weight + 1);
// If this action changes a node property, we need to save the node
// so the change will persist.
$actions = actions_list();
if (isset($actions[$aid]['behavior']) && in_array('changes_node_property', $actions[$aid]['behavior']) && ($form_values['operation'] != 'presave')) {
// Delete previous node_save_action if it exists, and re-add a new one at a higher weight.
$save_post_action_assigned = db_result(db_query("SELECT aid FROM {trigger_assignments} WHERE hook = '%s' AND op = '%s' AND aid = 'node_save_action'", $form_values['hook'], $form_values['operation']));
if ($save_post_action_assigned) {
db_query("DELETE FROM {trigger_assignments} WHERE hook = '%s' AND op = '%s' AND aid = 'node_save_action'", $form_values['hook'], $form_values['operation']);
}
db_query("INSERT INTO {trigger_assignments} VALUES ('%s', '%s', '%s', %d)", $form_values['hook'], $form_values['operation'], 'node_save_action', $weight + 2);
if (!$save_post_action_assigned) {
drupal_set_message(t('You have added an action that changes a the property of a post. A Save post action has been added so that the property change will be saved.'));
}
}
}
}
/**
* Display actions assigned to this hook-op combination in a table.
*
* @param array $element
* The fieldset including all assigned actions.
* @return
* The rendered form with the table prepended.
*
* @ingroup themeable
*/
function theme_trigger_display($element) {
$header = array();
$rows = array();
if (count($element['assigned']['#value'])) {
$header = array(array('data' => t('Name')), array('data' => t('Operation')));
$rows = array();
foreach ($element['assigned']['#value'] as $aid => $info) {
$rows[] = array(
$info['description'],
$info['link']
);
}
}
if (count($rows)) {
$output = theme('table', $header, $rows) . drupal_render($element);
}
else {
$output = drupal_render($element);
}
return $output;
}
/**
* Get the actions that have already been defined for this
* type-hook-op combination.
*
* @param $type
* One of 'node', 'user', 'comment'.
* @param $hook
* The name of the hook for which actions have been assigned,
* e.g. 'nodeapi'.
* @param $op
* The hook operation for which the actions have been assigned,
* e.g., 'view'.
* @return
* An array of action descriptions keyed by action IDs.
*/
function _trigger_get_hook_actions($hook, $op, $type = NULL) {
$actions = array();
if ($type) {
$result = db_query("SELECT h.aid, a.description FROM {trigger_assignments} h LEFT JOIN {actions} a on a.aid = h.aid WHERE a.type = '%s' AND h.hook = '%s' AND h.op = '%s' ORDER BY h.weight", $type, $hook, $op);
}
else {
$result = db_query("SELECT h.aid, a.description FROM {trigger_assignments} h LEFT JOIN {actions} a on a.aid = h.aid WHERE h.hook = '%s' AND h.op = '%s' ORDER BY h.weight", $hook, $op);
}
while ($action = db_fetch_object($result)) {
$actions[$action->aid] = $action->description;
}
return $actions;
}
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