Drupal modules for browsing and managing Fedora-based digital repositories.
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<?php
/**
* @file
* Defines the multi-page ingest form and any relevant hooks and functions.
*/
/**
* Checks if the given configuration can be used to display the ingest form.
*
* @param array $configuration
* The list of key/value pairs of configuration.
*
* @return bool
* TRUE if the give configuration defines one or more form steps, FALSE
* otherwise.
*/
function islandora_ingest_can_display_ingest_form(array $configuration) {
$form_state = array();
islandora_ingest_form_init_form_state_storage($form_state, $configuration);
$form_steps = islandora_ingest_form_get_form_steps($form_state);
// Forget the stubbed steps for the remainder of this request.
drupal_static_reset('islandora_ingest_form_get_steps');
return count($form_steps) > 0;
}
/**
* Ingest form build function.
*
* Initializes the form state, and builds the initial list of steps, excutes
* the current step.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
* @param array $configuration
* An associative array of configuration values that are used to build the
* list of steps to be executed, including:
* - id: The PID with which the object should be created.
* - namespace: The PID namespace in which the object should be created.
* (id is used first, if it is given).
* - label: The initial label for the object. Defaults to "New Object".
* - collections: An array of collection PIDs, to which the new object should
* be related.
* - models: An array of content model PIDs, to which the new object might
* subscribe
* - parent: The parent of the child to be ingested. This is needed for XACML
* to correctly apply the parent's POLICY to children.
*
* @return array
* The form definition of the current step.
*/
function islandora_ingest_form(array $form, array &$form_state, array $configuration) {
try {
islandora_ingest_form_init_form_state_storage($form_state, $configuration);
return islandora_ingest_form_execute_step($form, $form_state);
}
catch (Exception $e) {
drupal_set_message($e->getMessage(), 'error');
return array(array(
'#markup' => l(t('Back'), 'javascript:window.history.back();', array('external' => TRUE))));
}
}
/**
* Initializes the form_state storage for use in the ingest multi-page forms.
*
* @param array $form_state
* The Drupal form state.
* @param array $configuration
* A list of key value pairs that are used to build the list of steps to be
* executed.
*/
function islandora_ingest_form_init_form_state_storage(array &$form_state, array $configuration) {
if (empty($form_state['islandora'])) {
$objects = isset($configuration['objects']) ? $configuration['objects'] : array();
if (empty($objects)) {
$objects[] = islandora_ingest_form_prepare_new_object($configuration);
}
$configuration['models'] = isset($configuration['models']) ? $configuration['models'] : array();
// Make sure the models actually exist.
foreach ($configuration['models'] as $key => $model) {
if (!islandora_object_load($model)) {
unset($configuration['models'][$key]);
}
}
// No need to persist the 'objects' within the configuration.
unset($configuration['objects']);
// Required for step hooks.
$form_state['islandora'] = array(
'step_id' => NULL,
'objects' => $objects,
'shared_storage' => $configuration,
'step_storage' => array(),
);
// Must be called after $form_state['islandora'] is initialized, otherwise,
// the values in 'islandora' would not be availible to the step hooks.
$form_state['islandora']['step_id'] = islandora_ingest_form_get_first_step_id($form_state);
}
}
/**
* Get the first step ID.
*
* @param array $form_state
* The Drupal form state.
*
* @return string
* The 'id' of the very first step.
*/
function islandora_ingest_form_get_first_step_id(array &$form_state) {
$steps = islandora_ingest_form_get_steps($form_state);
$keys = array_keys($steps);
return array_shift($keys);
}
/**
* Get the last step ID.
*
* @param array $form_state
* The Drupal form state.
*
* @return string
* The 'id' of the very last step.
*/
function islandora_ingest_form_get_last_step_id(array &$form_state) {
$steps = islandora_ingest_form_get_steps($form_state);
$keys = array_keys($steps);
return array_pop($keys);
}
/**
* Prepares a new object based on the given configuration.
*
* @param array $configuration
* The list of key/value pairs of configuration.
*
* @return NewFedoraObject
* The new object.
*/
function islandora_ingest_form_prepare_new_object(array $configuration) {
module_load_include('inc', 'islandora', 'includes/utilities');
if (empty($configuration['object'])) {
$message = islandora_deprecated('Please use "objects" as the default ingest form configuration property.');
trigger_error(check_plain($message), E_USER_DEPRECATED);
// ID is more specific than namespace so it will take precedence.
$id = isset($configuration['namespace']) ? $configuration['namespace'] : 'islandora';
$id = isset($configuration['id']) ? $configuration['id'] : $id;
$label = isset($configuration['label']) ? $configuration['label'] : 'New Object';
$relationship_map = function($o) {
return array('relationship' => 'isMemberOfCollection', 'pid' => $o);
};
$relationships = empty($configuration['collections']) ? array() : array_map($relationship_map, $configuration['collections']);
return islandora_prepare_new_object($id, $label, array(), array(), $relationships);
}
return $configuration['object'];
}
/**
* Gets the given/current step.
*
* If the current step is not defined it's assumed that all steps have executed.
*
* @param array $form_state
* The Drupal form state.
* @param string $step_id
* The ID of the step. The current step is returned if no step ID is given.
*
* @return array
* The given/current step if found, NULL otherwise.
*/
function islandora_ingest_form_get_step(array &$form_state, $step_id = NULL) {
$step_id = isset($step_id) ? $step_id : islandora_ingest_form_get_current_step_id($form_state);
$steps = islandora_ingest_form_get_steps($form_state);
if (isset($step_id) && isset($steps[$step_id])) {
return $steps[$step_id];
}
return NULL;
}
/**
* Gets the next step.
*
* If the current step is not defined it's assumed that all steps have executed.
*
* @param array $form_state
* The Drupal form state.
* @param string $step
* The step relative to the result, if not provided the current step is used.
*
* @return string
* The next step if found, NULL otherwise.
*/
function islandora_ingest_form_get_next_step(array &$form_state, array $step = NULL) {
$step = isset($step) ? $step : islandora_ingest_form_get_step($form_state);
$next_step_id = islandora_ingest_form_get_next_step_id($form_state, $step['id']);
return isset($next_step_id) ? islandora_ingest_form_get_step($form_state, $next_step_id) : NULL;
}
/**
* Gets the previous step.
*
* If the current step is not defined it's assumed that all steps have executed.
*
* @param array $form_state
* The Drupal form state.
* @param string $step
* The step relative to the result, if not provided the current step is used.
*
* @return string
* The next step if found, NULL otherwise.
*/
function islandora_ingest_form_get_previous_step(array &$form_state, array $step = NULL) {
$step = isset($step) ? $step : islandora_ingest_form_get_step($form_state);
$previous_step_id = islandora_ingest_form_get_previous_step_id($form_state, $step['id']);
return isset($previous_step_id) ? islandora_ingest_form_get_step($form_state, $previous_step_id) : NULL;
}
/**
* Gets the ID of the current step.
*
* If the current step is not defined it's assumed that all steps have executed.
*
* @param array $form_state
* The Drupal form state.
*
* @return string
* The step ID.
*/
function islandora_ingest_form_get_current_step_id(array &$form_state) {
return $form_state['islandora']['step_id'];
}
/**
* Gets the ID of the next step.
*
* If the current step is not defined it's assumed that all steps have executed.
*
* @param array $form_state
* The Drupal form state.
* @param string $step_id
* The ID of the step relative to the result, if not provided the current
* step_id is used.
*
* @return string
* The next step ID if found, NULL otherwise.
*/
function islandora_ingest_form_get_next_step_id(array &$form_state, $step_id = NULL) {
$step_id = isset($step_id) ? $step_id : islandora_ingest_form_get_current_step_id($form_state);
$step_ids = array_keys(islandora_ingest_form_get_steps($form_state));
$index = array_search($step_id, $step_ids);
$count = count($step_ids);
if ($index !== FALSE && ++$index < $count) {
return $step_ids[$index];
}
return NULL;
}
/**
* Gets the ID of the previous step.
*
* If the current step is not defined it's assumed that all steps have executed.
* In such cases the last step will be returned.
*
* @param array $form_state
* The Drupal form state.
* @param string $step_id
* The ID of the step relative to the result, if not provided the current
* step_id is used.
*
* @return string
* The previous step ID if found, NULL otherwise.
*/
function islandora_ingest_form_get_previous_step_id(array &$form_state, $step_id = NULL) {
$step_id = isset($step_id) ? $step_id : islandora_ingest_form_get_current_step_id($form_state);
// If the current step is not defined it's assumed that all steps have
// executed. So return the very last step.
if ($step_id == NULL) {
return islandora_ingest_form_get_last_step_id($form_state);
}
$step_ids = array_keys(islandora_ingest_form_get_steps($form_state));
$index = array_search($step_id, $step_ids);
if ($index !== FALSE && --$index >= 0) {
return $step_ids[$index];
}
return NULL;
}
/**
* Increments the current step if possible.
*
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_increment_step(array &$form_state) {
// When going to the next step rebuild the list of steps as the submit
// of the current step could have added/removed a step.
drupal_static_reset('islandora_ingest_form_get_steps');
$next_step_id = islandora_ingest_form_get_next_step_id($form_state);
islandora_ingest_form_stash_info($form_state);
$form_state['islandora']['step_id'] = $next_step_id;
islandora_ingest_form_grab_info($form_state);
}
/**
* Decrement the current step if possible.
*
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_decrement_step(array &$form_state) {
$previous_step_id = islandora_ingest_form_get_previous_step_id($form_state);
// Don't decrement passed the first step.
if (isset($previous_step_id)) {
islandora_ingest_form_stash_info($form_state);
$form_state['islandora']['step_id'] = $previous_step_id;
islandora_ingest_form_grab_info($form_state);
}
}
/**
* Executes the current step.
*
* Builds the form definition and appends on any additonal elements required
* for the step to function.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*
* @return array
* The form definition of the current step.
*/
function islandora_ingest_form_execute_step(array $form, array &$form_state, $step_id = NULL) {
// Load any required files for the current step.
islandora_ingest_form_load_include($form_state);
$step = isset($step_id) ? islandora_ingest_form_get_step($form_state) : islandora_ingest_form_get_step($form_state, $step_id);
switch ($step['type']) {
case 'callback':
// Execute all the consecutive callbacks, and move then attempt to process
// the next step.
islandora_ingest_form_execute_consecutive_callback_steps($form, $form_state, $step);
return islandora_ingest_form_execute_step($form, $form_state);
case 'form':
return islandora_ingest_form_execute_form_step($form, $form_state, $step);
case 'batch':
// @todo Implement if possible.
break;
}
return array();
}
/**
* Execute the given 'form' step.
*
* Assumes the given step is a 'form' step.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*
* @return array
* The form definition of the given step.
*/
function islandora_ingest_form_execute_form_step(array $form, array &$form_state, array $step) {
$args = array($form, &$form_state);
$args = isset($step['args']) ? array_merge($args, $step['args']) : $args;
$shared_storage = islandora_ingest_form_get_shared_storage($form_state);
// Build the form step.
$form = call_user_func_array($step['form_id'], $args);
// Since the list of steps depends on the shared storage we will rebuild the
// list of steps if the shared storage has changed. This must be done before
// stepifying, so the prev/next buttons get updated.
if ($shared_storage != islandora_ingest_form_get_shared_storage($form_state)) {
drupal_static_reset('islandora_ingest_form_get_steps');
}
return islandora_ingest_form_stepify($form, $form_state, $step);
}
/**
* Execute the given 'callback' step and any consecutive 'callback' steps.
*
* Assumes the given step is a 'callback' step.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_execute_consecutive_callback_steps(array $form, array &$form_state, array $step) {
do {
islandora_ingest_form_execute_callback_step($form, $form_state, $step);
islandora_ingest_form_increment_step($form_state);
$step = islandora_ingest_form_get_step($form_state);
} while (isset($step) && $step['type'] == 'callback');
}
/**
* Execute the given 'callback' step.
*
* Assumes the given step is a 'callback' step.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_execute_callback_step(array $form, array &$form_state, array $step) {
$args = array(&$form_state);
$args = isset($step['do_function']['args']) ? array_merge($args, $step['do_function']['args']) : $args;
call_user_func_array($step['do_function']['function'], $args);
}
/**
* Undo the given 'callback' step and any consecutive 'callback' steps.
*
* Assumes the given $step is a 'callback' step.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_undo_consecutive_callback_steps(array $form, array &$form_state, array $step) {
do {
islandora_ingest_form_undo_callback_step($form, $form_state, $step);
islandora_ingest_form_decrement_step($form_state);
$step = islandora_ingest_form_get_step($form_state);
} while (isset($step) && $step['type'] == 'callback');
}
/**
* Undo the given 'callback' step.
*
* Assumes the given $step is a 'callback' step.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_undo_callback_step(array $form, array &$form_state, array $step) {
$args = array(&$form_state);
$args = isset($step['undo_function']['args']) ? array_merge($args, $step['undo_function']['args']) : $args;
call_user_func_array($step['undo_function']['function'], $args);
}
/**
* Append Prev/Next buttons submit/validation handlers etc.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*
* @return array
* The stepified Drupal form definition for the given step.
*/
function islandora_ingest_form_stepify(array $form, array &$form_state, $step) {
$first_form_step = islandora_ingest_form_on_first_form_step($form_state);
$last_form_step = islandora_ingest_form_on_last_form_step($form_state);
$form['form_step_id'] = array(
'#type' => 'hidden',
'#value' => islandora_ingest_form_get_current_step_id($form_state),
);
$form['prev'] = $first_form_step ? NULL : islandora_ingest_form_previous_button($form_state);
$form['next'] = $last_form_step ? islandora_ingest_form_ingest_button($form_state) : islandora_ingest_form_next_button($form_state);
// Allow for a hook_form_FORM_ID_alter().
drupal_alter(array('form_' . $step['form_id'], 'form'), $form, $form_state, $step['form_id']);
return $form;
}
/**
* Checks if we are on the first form step.
*
* @param array $form_state
* The Drupal form state.
*
* @return bool
* TRUE if we are currently on the first step, FALSE otherwise.
*/
function islandora_ingest_form_on_first_form_step(array &$form_state) {
return !islandora_ingest_form_get_previous_form_step($form_state);
}
/**
* Checks if we are on the last form step.
*
* @param array $form_state
* The Drupal form state.
*
* @return bool
* TRUE if we are currently on the last step, FALSE otherwise.
*/
function islandora_ingest_form_on_last_form_step(array &$form_state) {
return !islandora_ingest_form_get_next_form_step($form_state);
}
/**
* Get the previous form step relative to the current step.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* The previous form step if one exists, NULL otherwise.
*/
function islandora_ingest_form_get_previous_form_step(array &$form_state) {
$step = NULL;
do {
$step = islandora_ingest_form_get_previous_step($form_state, $step);
} while (isset($step) && $step['type'] != 'form');
return $step;
}
/**
* Get the next form step relative to the current step.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* The next form step if one exists, NULL otherwise.
*/
function islandora_ingest_form_get_next_form_step(array &$form_state) {
$step = NULL;
do {
$step = islandora_ingest_form_get_next_step($form_state, $step);
} while (isset($step) && $step['type'] != 'form');
return $step;
}
/**
* Defines the previous button for the ingest form.
*
* Adds submit handlers for the form step if they exist.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* The previous button for the ingest form.
*/
function islandora_ingest_form_previous_button(array &$form_state) {
// Before we move back to the previous step we should tell the previous steps
// to undo whatever its submit handler did.
$prev_form_step = islandora_ingest_form_get_previous_form_step($form_state);
$form_id = $prev_form_step['form_id'];
$submit_callback = $form_id . '_undo_submit';
$submit = function_exists($submit_callback) ? array('islandora_ingest_form_previous_submit', $submit_callback) : array('islandora_ingest_form_previous_submit');
return array(
'#type' => 'submit',
'#value' => t('Previous'),
'#name' => 'prev',
'#submit' => $submit,
// #limit_validation_errors, is why when the previous button is pressed no
// values persisted in the form_state, but its also what allows us to go
// back when validation errors occur. To have a better solution going
// forward we can either limit validation only on required fields, or we can
// convert all required fields to use #element_validation functions, and
// Remove the need for #limit_validation_errors. Or maybe there is some
// other solution, regardless of what it is, it won't be standard.
'#limit_validation_errors' => array(),
);
}
/**
* The submit handler for the ingest form previous button.
*
* Stores the current form steps values in the form storage.
* Moves the focus of the multi-page ingest form back one step.
* Restores the form values for the previous step.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_previous_submit(array $form, array &$form_state) {
islandora_ingest_form_decrement_step($form_state);
$step = islandora_ingest_form_get_step($form_state);
// Undo all callbacks that occured after the previous step.
if ($step['type'] == 'callback') {
islandora_ingest_form_undo_consecutive_callback_steps($form, $form_state, $step);
}
$form_state['rebuild'] = TRUE;
}
/**
* Defines the next button for the ingest form.
*
* Adds submit/validate handlers for the form step if they exist.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* The next button for the ingest form.
*/
function islandora_ingest_form_next_button(array &$form_state) {
$step = islandora_ingest_form_get_step($form_state);
$form_id = $step['form_id'];
$validate_callback = $form_id . '_validate';
$validate = function_exists($validate_callback) ? array($validate_callback) : NULL;
$submit_callback = $form_id . '_submit';
$submit = function_exists($submit_callback) ? array($submit_callback, 'islandora_ingest_form_next_submit') : array('islandora_ingest_form_next_submit');
return array(
'#type' => 'submit',
'#value' => t('Next'),
'#name' => 'next',
'#validate' => $validate,
'#submit' => $submit,
);
}
/**
* The submit handler for the ingest form next button.
*
* Stores the current form steps values in the form storage.
* Moves the focus of the multi-page ingest form forward one step.
* Restores the form values for the next step if present.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_next_submit(array $form, array &$form_state) {
islandora_ingest_form_increment_step($form_state);
$form_state['rebuild'] = TRUE;
}
/**
* Push current info into the current step's storage.
*
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_stash_info(array &$form_state) {
$storage = &islandora_ingest_form_get_step_storage($form_state);
if ($storage && isset($form_state['values'])) {
$storage['values'] = $form_state['values'];
unset($form_state['values']);
}
}
/**
* Pops the info for the given step from storage into the form_state.
*
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_grab_info(array &$form_state) {
$storage = islandora_ingest_form_get_step_storage($form_state);
$form_state['values'] = isset($storage['values']) ? $storage['values'] : array();
}
/**
* Defines the ingest button for the ingest form.
*
* This button is only shown on the last page of the multi-page ingest form.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* The ingest button for the ingest form.
*/
function islandora_ingest_form_ingest_button(array &$form_state) {
$step = islandora_ingest_form_get_step($form_state);
$form_id = $step['form_id'];
$validate_callback = $form_id . '_validate';
$validate = function_exists($validate_callback) ? array($validate_callback) : NULL;
$submit_callback = $form_id . '_submit';
$submit = function_exists($submit_callback) ? array($submit_callback, 'islandora_ingest_form_submit') : array('islandora_ingest_form_submit');
return array(
'#type' => 'submit',
'#name' => 'ingest',
'#value' => t('Ingest'),
'#validate' => $validate,
'#submit' => $submit,
);
}
/**
* The submit handler for the ingest form.
*
* Attempts to ingest every object built by the previous steps.
*
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_submit(array $form, array &$form_state) {
// Execute any remaining callbacks.
islandora_ingest_form_increment_step($form_state);
$step = islandora_ingest_form_get_step($form_state);
if (isset($step) && $step['type'] == 'callback') {
islandora_ingest_form_execute_consecutive_callback_steps($form, $form_state, $step);
}
// Ingest the objects.
foreach ($form_state['islandora']['objects'] as $object) {
try {
islandora_add_object($object);
$form_state['redirect'] = "islandora/object/{$object->id}";
}
catch (Exception $e) {
// If post hooks throws it may already exist at this point but may be
// invalid, so don't say failed.
watchdog('islandora', 'Exception Message: @exception.', array('@exception' => $e->getMessage()), WATCHDOG_ERROR);
drupal_set_message(t('A problem occured while ingesting "@label" (ID: @pid), please notifiy the administrator.', array('@label' => $object->label, '@pid' => $object->id)), 'error');
}
}
}
/**
* Gets a reference to the stored NewFedoraObject's.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* A reference to the stored NewFedoraObjects to be ingested when the final
* step submits.
*/
function &islandora_ingest_form_get_objects(array &$form_state) {
return $form_state['islandora']['objects'];
}
/**
* Gets a single object from the stored NewFedoraObject's.
*
* @note In our current use case we are only dealing with a single object
* ingest, this makes it convenient to access it. Ideally the steps
* implementations will be abstracted to be indifferent to what object it's
* currently working on. This will act as a placeholder for such
* functionality.
*
* @param array $form_state
* The Drupal form state.
*
* @return NewFedoraObject
* Returns the 'current' object in the array of NewFedoraObjects, generally
* this is only used when there is one object in the list of objects.
*/
function islandora_ingest_form_get_object(array &$form_state) {
$objects = &islandora_ingest_form_get_objects($form_state);
return reset($objects);
}
/**
* Get general storage for the given/current step.
*
* @param array $form_state
* The Drupal form state.
* @param array $step_id
* The ID of the step.
*
* @return array
* The given/current step storage if found, NULL otherwise.
*/
function &islandora_ingest_form_get_step_storage(array &$form_state, $step_id = NULL) {
$step_id = isset($step_id) ? $step_id : islandora_ingest_form_get_current_step_id($form_state);
if (isset($step_id)) {
if (!isset($form_state['islandora']['step_storage'][$step_id])) {
$form_state['islandora']['step_storage'][$step_id] = array();
}
return $form_state['islandora']['step_storage'][$step_id];
}
$undefined_step_storage = array();
return $undefined_step_storage;
}
/**
* Gets the configuration used to create the multi-page ingest form.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* The configuration used to generate the multi-page ingest forms.
*/
function &islandora_ingest_form_get_shared_storage(array &$form_state) {
return $form_state['islandora']['shared_storage'];
}
/**
* Call form_load_include, for the current step if it defines a required file.
*
* @param array $form_state
* The Drupal form state.
*/
function islandora_ingest_form_load_include(array &$form_state) {
form_load_include($form_state, 'inc', 'islandora', 'includes/ingest.form');
$step = islandora_ingest_form_get_step($form_state);
// Load include files.
if (isset($step['file']) && isset($step['module'])) {
$matches = array();
preg_match('/^(.*)\.(.*)$/', $step['file'], $matches);
list($file, $name, $type) = $matches;
form_load_include($form_state, $type, $step['module'], $name);
}
}
/**
* Buildes the initial list of ingest steps.
*
* Sorted by weight expected range between -50 to 50.
*
* The sort order is undefined for steps which have the same weight.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* The list of sorted ingest steps as defined by all implementers
* of ISLANDORA_INGEST_STEP_HOOK.
*/
function islandora_ingest_form_get_steps(array &$form_state) {
module_load_include('inc', 'islandora', 'includes/utilities');
$steps = &drupal_static(__FUNCTION__);
if (isset($steps)) {
return $steps;
}
$steps = array();
$shared_storage = &islandora_ingest_form_get_shared_storage($form_state);
foreach (islandora_build_hook_list(ISLANDORA_INGEST_STEP_HOOK, $shared_storage['models']) as $hook) {
// Required for pass by reference.
// @todo Change this around so that it isn't passed by reference, there
// Is an alter below that can handle that requirement.
foreach (module_implements($hook) as $module) {
$function = $module . '_' . $hook;
$module_steps = (array) $function($form_state);
$steps = array_merge($steps, $module_steps);
}
}
$steps = array_filter($steps);
foreach (islandora_build_hook_list(ISLANDORA_INGEST_STEP_HOOK, $shared_storage['models']) as $hook) {
drupal_alter($hook, $steps, $form_state);
}
// Add any defaults.
foreach ($steps as $key => &$step) {
$step['id'] = $key;
}
uasort($steps, 'drupal_sort_weight');
return $steps;
}
/**
* Filter the ingest steps to only steps of type 'form'.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* The list of sorted ingest form steps as defined by all implementers
* of ISLANDORA_INGEST_STEP_HOOK.
*/
function islandora_ingest_form_get_form_steps(array &$form_state) {
$steps = islandora_ingest_form_get_steps($form_state);
$form_step_filter = function($o) {
return $o['type'] == 'form';
};
return array_filter($steps, $form_step_filter);
}
/**
* Filter the ingest steps to only steps of type 'form'.
*
* @param array $form_state
* The Drupal form state.
*
* @return array
* The list of sorted ingest callback steps as defined by all implementers
* of ISLANDORA_INGEST_STEP_HOOK.
*/
function islandora_ingest_form_get_callback_steps(array &$form_state) {
$steps = islandora_ingest_form_get_steps($form_state);
$callback_step_filter = function($o) {
return $o['type'] == 'callback';
};
return array_filter($steps, $callback_step_filter);
}