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