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<?php
/**
* @file
* Admin page callbacks for the trigger module.
*/
/**
* Builds a form that allows users to assign actions to triggers.
*
* @param $module_to_display
* Which tab of triggers to display. E.g., 'node' for all node-related
* triggers.
*
* @return
* HTML form.
*
* @see trigger_menu()
*/
function trigger_assign($module_to_display = NULL) {
// If no type is specified we default to node actions, since they
// are the most common.
if (!isset($module_to_display)) {
drupal_goto('admin/structure/trigger/node');
}
$build = array();
$trigger_info = module_invoke_all('trigger_info');
drupal_alter('trigger_info', $trigger_info);
foreach ($trigger_info as $module => $hooks) {
if ($module == $module_to_display) {
foreach ($hooks as $hook => $description) {
$form_id = 'trigger_' . $hook . '_assign_form';
$build[$form_id] = drupal_get_form($form_id, $module, $hook, $description['label']);
}
}
}
return $build;
}
/**
* Form constructor for confirmation page for removal of an assigned action.
*
* @param $module
* The tab of triggers the user will be directed to after successful
* removal of the action, or if the confirmation form is cancelled.
* @param $hook
* The name of the trigger hook, e.g., 'node_insert'.
* @param $aid
* The action ID.
*
* @see trigger_unassign_submit()
* @ingroup forms
*/
function trigger_unassign($form, $form_state, $module, $hook = NULL, $aid = NULL) {
if (!isset($hook, $aid)) {
drupal_goto('admin/structure/trigger');
}
$form['hook'] = array(
'#type' => 'value',
'#value' => $hook,
);
$form['module'] = array(
'#type' => 'value',
'#value' => $module,
);
$form['aid'] = array(
'#type' => 'value',
'#value' => $aid,
);
$action = actions_function_lookup($aid);
$actions = actions_get_all_actions();
$destination = 'admin/structure/trigger/' . $module;
return confirm_form($form,
t('Are you sure you want to unassign the action %title?', array('%title' => $actions[$action]['label'])),
$destination,
t('You can assign it again later if you wish.'),
t('Unassign'), t('Cancel')
);
}
/**
* Form submission handler for trigger_unassign().
*/
function trigger_unassign_submit($form, &$form_state) {
if ($form_state['values']['confirm'] == 1) {
$aid = actions_function_lookup($form_state['values']['aid']);
db_delete('trigger_assignments')
->condition('hook', $form_state['values']['hook'])
->condition('aid', $aid)
->execute();
drupal_static_reset('trigger_get_assigned_actions');
$actions = actions_get_all_actions();
watchdog('actions', 'Action %action has been unassigned.', array('%action' => $actions[$aid]['label']));
drupal_set_message(t('Action %action has been unassigned.', array('%action' => $actions[$aid]['label'])));
$form_state['redirect'] = 'admin/structure/trigger/' . $form_state['values']['module'];
}
else {
drupal_goto('admin/structure/trigger');
}
}
/**
* Returns the form for assigning an action to a trigger.
*
* @param $module
* The name of the trigger group, e.g., 'node'.
* @param $hook
* The name of the trigger hook, e.g., 'node_insert'.
* @param $label
* A plain English description of what this trigger does.
*
* @see trigger_assign_form_validate()
* @see trigger_assign_form_submit()
* @ingroup forms
*/
function trigger_assign_form($form, $form_state, $module, $hook, $label) {
$form['module'] = array(
'#type' => 'hidden',
'#value' => $module,
);
$form['hook'] = array(
'#type' => 'hidden',
'#value' => $hook,
);
// 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.
foreach (actions_list() as $func => $metadata) {
if (isset($metadata['triggers']) && array_intersect(array($hook, 'any'), $metadata['triggers'])) {
$functions[] = $func;
}
}
foreach (actions_actions_map(actions_get_all_actions()) as $aid => $action) {
if (in_array($action['callback'], $functions)) {
$options[$action['type']][$aid] = $action['label'];
}
}
$form[$hook] = array(
'#type' => 'fieldset',
// !description is correct, since these labels are passed through t() in
// hook_trigger_info().
'#title' => t('Trigger: !description', array('!description' => $label)),
'#theme' => 'trigger_display',
);
// Retrieve actions that are already assigned to this hook combination.
$actions = trigger_get_assigned_actions($hook);
$form[$hook]['assigned']['#type'] = 'value';
$form[$hook]['assigned']['#value'] = array();
foreach ($actions as $aid => $info) {
// If action is defined unassign it, otherwise offer to delete all orphaned
// actions.
$hash = drupal_hash_base64($aid, TRUE);
if (actions_function_lookup($hash)) {
$form[$hook]['assigned']['#value'][$aid] = array(
'label' => $info['label'],
'link' => l(t('unassign'), "admin/structure/trigger/unassign/$module/$hook/$hash"),
);
}
else {
// Link to system_actions_remove_orphans() to do the clean up.
$form[$hook]['assigned']['#value'][$aid] = array(
'label' => $info['label'],
'link' => l(t('Remove orphaned actions'), "admin/config/system/actions/orphan"),
);
}
}
$form[$hook]['parent'] = array(
'#type' => 'container',
'#attributes' => array('class' => array('container-inline')),
);
// List possible actions that may be assigned.
if (count($options) != 0) {
$form[$hook]['parent']['aid'] = array(
'#type' => 'select',
'#title' => t('List of trigger actions when !description', array('!description' => $label)),
'#title_display' => 'invisible',
'#options' => $options,
'#empty_option' => t('Choose an action'),
);
$form[$hook]['parent']['submit'] = array(
'#type' => 'submit',
'#value' => t('Assign')
);
}
else {
$form[$hook]['none'] = array(
'#markup' => t('No actions available for this trigger. <a href="@link">Add action</a>.', array('@link' => url('admin/config/system/actions/manage')))
);
}
return $form;
}
/**
* Form validation handler for trigger_assign_form().
*
* Makes sure that the user is not re-assigning an action to an event.
*
* @see trigger_assign_form_submit()
*/
function trigger_assign_form_validate($form, $form_state) {
$form_values = $form_state['values'];
if (!empty($form_values['aid'])) {
$aid = actions_function_lookup($form_values['aid']);
$aid_exists = db_query("SELECT aid FROM {trigger_assignments} WHERE hook = :hook AND aid = :aid", array(
':hook' => $form_values['hook'],
':aid' => $aid,
))->fetchField();
if ($aid_exists) {
form_set_error($form_values['hook'], t('The action you chose is already assigned to that trigger.'));
}
}
}
/**
* Form submission handler for trigger_assign_form().
*
* @see trigger_assign_form_validate()
*/
function trigger_assign_form_submit($form, &$form_state) {
if (!empty($form_state['values']['aid'])) {
$aid = actions_function_lookup($form_state['values']['aid']);
$weight = db_query("SELECT MAX(weight) FROM {trigger_assignments} WHERE hook = :hook", array(':hook' => $form_state['values']['hook']))->fetchField();
// Insert the new action.
db_insert('trigger_assignments')
->fields(array(
'hook' => $form_state['values']['hook'],
'aid' => $aid,
'weight' => $weight + 1,
))
->execute();
// If we are not configuring an action for a "presave" hook and this action
// changes an object property, then we need to save the object, so the
// property change will persist.
$actions = actions_list();
if (strpos($form_state['values']['hook'], 'presave') === FALSE && isset($actions[$aid]['behavior']) && in_array('changes_property', $actions[$aid]['behavior'])) {
// Determine the corresponding save action name for this action.
$save_action = strtok($aid, '_') . '_save_action';
// If no corresponding save action exists, we need to bail out.
if (!isset($actions[$save_action])) {
throw new Exception(t('Missing/undefined save action (%save_aid) for %aid action.', array('%save_aid' => $aid, '%aid' => $aid)));
}
// Delete previous save action if it exists, and re-add it using a higher
// weight.
$save_action_assigned = db_query("SELECT aid FROM {trigger_assignments} WHERE hook = :hook AND aid = :aid", array(':hook' => $form_state['values']['hook'], ':aid' => $save_action))->fetchField();
if ($save_action_assigned) {
db_delete('trigger_assignments')
->condition('hook', $form_state['values']['hook'])
->condition('aid', $save_action)
->execute();
}
db_insert('trigger_assignments')
->fields(array(
'hook' => $form_state['values']['hook'],
'aid' => $save_action,
'weight' => $weight + 2,
))
->execute();
// If no save action existed before, inform the user about it.
if (!$save_action_assigned) {
drupal_set_message(t('The %label action has been appended, which is required to save the property change.', array('%label' => $actions[$save_action]['label'])));
}
// Otherwise, just inform about the new weight.
else {
drupal_set_message(t('The %label action was moved to save the property change.', array('%label' => $actions[$save_action]['label'])));
}
}
}
drupal_static_reset('trigger_get_assigned_actions');
}
/**
* Returns HTML for the form showing actions assigned to a trigger.
*
* @param $variables
* An associative array containing:
* - element: The fieldset including all assigned actions.
*
* @ingroup themeable
*/
function theme_trigger_display($variables) {
$element = $variables['element'];
$header = array();
$rows = array();
if (isset($element['assigned']) && count($element['assigned']['#value'])) {
$header = array(array('data' => t('Name')), array('data' => t('Operation')));
$rows = array();
foreach ($element['assigned']['#value'] as $aid => $info) {
$rows[] = array(
check_plain($info['label']),
$info['link']
);
}
}
if (count($rows)) {
$output = theme('table', array('header' => $header, 'rows' => $rows)) . drupal_render_children($element);
}
else {
$output = drupal_render_children($element);
}
return $output;
}
