Drupal modules for browsing and managing Fedora-based digital repositories.
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<?php
/*
* @file islandora_basic_image.module
*
* an Islandora module to handle basic image cmodels
*
*
* This file is part of Islandora.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the program. If not, see <http ://www.gnu.org/licenses/>.
*/
/**
* Implementation of hook_menu.
* we need some standard entry points so we can have consistent urls for different Object actions
*/
function islandora_basic_image_menu() {
$items = array();
$items['islandora/object/%/image'] = array(
'title' => 'Manage Image',
'page callback' => 'islandora_edit_object',
'page arguments' => array(2),
'type' => MENU_LOCAL_TASK,
'access callback' => 'islandora_basic_image_access',
'access arguments' => array(2),
);
return $items;
}
function islandora_basic_image_access($object_id){
return true;
module_load_include('inc', 'islandora', 'RestConnection');
global $user;
try {
$restConnection = new RestConnection($user);
$fedora_object = new FedoraObject($object_id, $restConnection->repository);
} catch (Exception $e) {
drupal_set_message(t('Error getting Islandora object %s %e', array('%s' => $object_id, '%e' => $e)), 'error');
return "";
}
if (!isset($fedora_object)) {
drupal_set_message(t('Could not remove object, object not found'));
return;
}
$models = $fedora_object->models;
$cmodel_list = islandora_basic_image_islandora_get_types();
foreach ($fedora_object->models as $model) {
if (isset($cmodel_list[$model])){
return user_access(FEDORA_MODIFY_STATE);
}
}
return FALSE;
}
/**
* Theme registry function
* We supply a pattern so we can overide templates at the theme level if needed.
* we can append a pid to a template and the new template file will be called (the pids
* colon should be replaced with a dash)
* @return array
*/
function islandora_basic_image_theme($existing, $type, $theme, $path) {
return array(
'islandora_basic_image_objects' => array(
'template' => 'islandora-basic-image-view-objects',
'variables' => array('islandor_objects' => NULL),
),
'islandora_basic_image' => array(
'template' => 'islandora-basic-image',
'pattern' => 'islandora_basic_image__', //we can add pids to the end of this pattern in our preprocess function
// and templates will be able to have have a pid appended to the template name to overide a template on a per object basis
//an example template would be named islandora-basic-image--islandora-27.tpl.phps
'variables' => array('islandora_object' => NULL),
)
);
}
/**
* tells the main module what types of objects we support. This is used to determine whether or not
* this module should attempt to respond.
* @return array
* array of content model pids that this module supports
*/
function islandora_basic_image_islandora_get_types() {
$types = array();
$types['islandora:sp_basic_image'][ISLANDORA_VIEW_HOOK] = TRUE;
$types['islandora:sp_basic_image'][ISLANDORA_EDIT_HOOK] = FALSE;
return $types;
}
/**
* this modules implentation of view_object hook will handle objects of type islandora:basicImageCModel and islandora:sp_basic_image
* as registered in its return types
* Other modules would handle objects of other types.
* @param Object $object
* a tuque fedora object
* @param object $user
* @param string $page_number
* @param string $page_size
* @return string
* themed html
*/
function islandora_basic_image_islandora_view_object($object, $user, $page_number, $page_size) {
//global $user;
$cmodel_list = islandora_basic_image_islandora_get_types();
$models = $object->models;
foreach ($object->models as $model) {
if (isset($cmodel_list[$model][ISLANDORA_VIEW_HOOK]) && $cmodel_list[$model][ISLANDORA_VIEW_HOOK] == TRUE) {
$output = theme('islandora_basic_image', array('islandora_object' => $object));
return array('' => $output);
}
}
return NULL;
}
/**
*
* @global type $base_url
* @param array $variables
* an array of variables that will be passed to the theme function
*/
function islandora_basic_image_preprocess_islandora_basic_image(&$variables) {
$islandora_object = $variables['islandora_object'];
module_load_include('inc', 'islandora', 'includes/islandora_dublin_core');
try {
$dc = $islandora_object['DC']->content;
$dc_object = Dublin_Core::import_from_xml_string($dc);
} catch (Exception $e) {
drupal_set_message(t('Error retrieving object %s %t', array('%s' => $islandora_object->id, '%t' => $e->getMessage())), 'error');
}
$variables['islandora_dublin_core'] = $dc_object;
//create a nicer array for themers
//TODO: give this a better home
//$dc_array = array();
//foreach ($dc_object as $element) {
// if (!empty($element)) {
// foreach ($element as $field => $value) {
// // split value if the result value is an array
// if (is_array($value)) {
// $value = implode(", ", $value);
// }
// $dc_label = explode(':', $field);
// $element_label = ucfirst($dc_label[1]);
// $dc_array[$field]['label'] = $element_label;
// $dc_array[$field]['value'] = strip_tags($value);
// $dc_array[$field]['class'] = strtolower( preg_replace('/[^A-Za-z0-9]/', '-', $field));
// }
// }
//}
$variables['dc_array'] = $dc_object->as_formatted_array();
$variables['islandora_object_label'] = $islandora_object->label;
$variables['theme_hook_suggestions'][] = 'islandora_basic_image__' . str_replace(':', '_', $islandora_object->id);
global $base_url;
if (isset($islandora_object['OBJ'])) {
$variables['islandora_image_url'] = $base_url . '/islandora/object/' . $islandora_object->id . '/datastream/OBJ/view';
}
if (isset($islandora_object['TN'])) {
$variables['islandora_thumbnail_url'] = $base_url . '/islandora/object/' . $islandora_object->id . '/datastream/TN/view';
}
if (isset($islandora_object['MEDIUM_SIZE'])) {
$medium_size = $base_url . '/islandora/object/' . $islandora_object->id . '/datastream/MEDIUM_SIZE/view';
$variables['islandora_medium_size_url'] = '<img src="' . $medium_size . '"/>';
}
}