comparison sites/all/modules/ctools/includes/export-ui.inc @ 0:ff03f76ab3fe

initial version

+<?php
+
+/**
+ * @file
+ * Provide a tool for creating UIs for exportable objects.
+ *
+ * See Advanced Help for documentation.
+ */
+
+/**
+ * Process an export-ui plugin to provide it with defaults.
+ */
+function ctools_export_ui_process(&$plugin, $info) {
+  ctools_include('export');
+
+  $plugin += array(
+    'has menu' => TRUE,
+    'title' => $plugin['name'],
+    'export' => array(),
+    'allowed operations' => array(),
+    'menu' => array(),
+    'redirect' => array(),
+    'form' => array(),
+    'strings' => array(),
+    'list' => NULL,
+    'access' => 'administer site configuration',
+  );
+
+  // Provide CRUD access defaults based on the base 'access' setting:
+  $plugin += array(
+    'create access' => $plugin['access'],
+    'delete access' => $plugin['access'],
+  );
+
+  if (empty($plugin['has menu'])) {
+    return;
+  }
+
+  // The following keys are required and the plugin cannot be processed
+  // without them.
+  $keys = array(
+    'title singular',
+    'title plural',
+    'title singular proper',
+    'title plural proper',
+    'schema',
+  );
+
+  foreach ($keys as $key) {
+    if (empty($plugin[$key])) {
+      drupal_set_message(t('The plugin definition of @plugin is missing the %key key.', array('%key' => $key, '@plugin' => $plugin['name'])), 'error');
+    }
+  }
+
+  // If we're on the modules page and building a menu, there is a design flaw
+  // in Drupal core that causes modules to be installed but the schema does
+  // not become available until AFTER menu rebuild. This helps smooth that
+  // out. This is a HACK but it should work:
+  $schema = ctools_export_get_schema($plugin['schema']);
+
+  if (empty($schema)) {
+    // If we're updating the schema may not have been read yet, so don't report this error in that case.
+    if (!defined('MAINTENANCE_MODE')) {
+      drupal_set_message(t('The plugin definition of @plugin cannot locate schema %schema.', array('%schema' => $plugin['schema'], '@plugin' => $plugin['name'])), 'error');
+    }
+    return;
+  }
+
+  if (empty($schema['export'])) {
+    drupal_set_message(t('The plugin definition of @plugin uses %schema, but it has no export section.', array('%schema' => $plugin['schema'], '@plugin' => $plugin['name'])), 'error');
+    return;
+  }
+  $plugin['export'] += $schema['export'];
+
+  $plugin['export'] += array(
+    // Add the identifier key from the schema so we don't have to call
+    // ctools_export_get_schema() just for that.
+    'key' => $schema['export']['key'],
+  );
+
+  // Add some default fields that appear often in exports
+  // If these use different keys they can easily be specified in the
+  // $plugin.
+
+  if (empty($plugin['export']['admin_title']) && !empty($schema['fields']['admin_title'])) {
+    $plugin['export']['admin_title'] = 'admin_title';
+  }
+  if (empty($plugin['export']['admin_description']) && !empty($schema['fields']['admin_description'])) {
+    $plugin['export']['admin_description'] = 'admin_description';
+  }
+
+  // Define allowed operations, and the name of the operations.
+  $plugin['allowed operations'] += array(
+    'edit'    => array('title' => t('Edit')),
+    'enable'  => array('title' => t('Enable'), 'ajax' => TRUE, 'token' => TRUE),
+    'disable' => array('title' => t('Disable'), 'ajax' => TRUE, 'token' => TRUE),
+    'revert'  => array('title' => t('Revert')),
+    'delete'  => array('title' => t('Delete')),
+    'clone'   => array('title' => t('Clone')),
+    'import'  => array('title' => t('Import')),
+    'export'  => array('title' => t('Export')),
+  );
+
+  $plugin['menu'] += array(
+    'menu item' => str_replace(' ', '-', $plugin['name']),
+    'menu prefix' => 'admin/structure',
+    'menu title' => $plugin['title'],
+    'menu description' => '',
+  );
+  $base_path = ctools_export_ui_plugin_base_path($plugin);
+  $prefix_count = count(explode('/', $plugin['menu']['menu prefix']));
+
+  $plugin['menu'] += array(
+    // Default menu items that should be declared.
+    'items' => array(),
+  );
+
+  $plugin['menu']['items'] += array(
+    'list callback' => array(),
+    'list' => array(),
+    'add' => array(),
+    'edit callback' => array(),
+    'edit' => array(),
+  );
+
+  $plugin['menu']['items']['list callback'] += array(
+    'path' => '',
+    // Menu items are translated by the menu system.
+    // TODO: We need more flexibility in title. The title of the admin page
+    // is not necessarily the title of the object, plus we need
+    // plural, singular, proper, not proper, etc.
+    'title' => $plugin['menu']['menu title'],
+    'description' => $plugin['menu']['menu description'],
+    'page callback' => 'ctools_export_ui_switcher_page',
+    'page arguments' => array($plugin['name'], 'list'),
+    'access callback' => 'ctools_export_ui_task_access',
+    'access arguments' => array($plugin['name'], 'list'),
+    'type' => MENU_NORMAL_ITEM,
+  );
+
+  $plugin['menu']['items']['list'] += array(
+    'path' => 'list',
+    'title' => 'List',
+    'page callback' => 'ctools_export_ui_switcher_page',
+    'page arguments' => array($plugin['name'], 'list'),
+    'access callback' => 'ctools_export_ui_task_access',
+    'access arguments' => array($plugin['name'], 'list'),
+    'type' => MENU_DEFAULT_LOCAL_TASK,
+    'weight' => -10,
+  );
+
+  $plugin['menu']['items']['add'] += array(
+    'path' => 'add',
+    'title' => 'Add',
+    'page callback' => 'ctools_export_ui_switcher_page',
+    'page arguments' => array($plugin['name'], 'add'),
+    'access callback' => 'ctools_export_ui_task_access',
+    'access arguments' => array($plugin['name'], 'add'),
+    'type' => MENU_LOCAL_ACTION,
+  );
+
+  $plugin['menu']['items']['edit callback'] += array(
+    'path' => 'list/%ctools_export_ui',
+    'page callback' => 'ctools_export_ui_switcher_page',
+    'page arguments' => array($plugin['name'], 'edit', $prefix_count + 2),
+    'load arguments' => array($plugin['name']),
+    'access callback' => 'ctools_export_ui_task_access',
+    'access arguments' => array($plugin['name'], 'edit', $prefix_count + 2),
+    'type' => MENU_CALLBACK,
+  );
+
+  $plugin['menu']['items']['edit'] += array(
+    'path' => 'list/%ctools_export_ui/edit',
+    'title' => 'Edit',
+    'page callback' => 'ctools_export_ui_switcher_page',
+    'page arguments' => array($plugin['name'], 'edit', $prefix_count + 2),
+    'load arguments' => array($plugin['name']),
+    'access callback' => 'ctools_export_ui_task_access',
+    'access arguments' => array($plugin['name'], 'edit', $prefix_count + 2),
+    'type' => MENU_DEFAULT_LOCAL_TASK,
+    'weight' => -10,
+  );
+
+  if ($plugin['allowed operations']['import']) {
+    $plugin['menu']['items'] += array('import' => array());
+    $plugin['menu']['items']['import'] += array(
+      'path' => 'import',
+      'title' => 'Import',
+      'page callback' => 'ctools_export_ui_switcher_page',
+      'page arguments' => array($plugin['name'], 'import'),
+      'access callback' => 'ctools_export_ui_task_access',
+      'access arguments' => array($plugin['name'], 'import'),
+      'type' => MENU_LOCAL_ACTION,
+    );
+  }
+
+  if ($plugin['allowed operations']['export']) {
+    $plugin['menu']['items'] += array('export' => array());
+    $plugin['menu']['items']['export'] += array(
+      'path' => 'list/%ctools_export_ui/export',
+      'title' => 'Export',
+      'page callback' => 'ctools_export_ui_switcher_page',
+      'page arguments' => array($plugin['name'], 'export', $prefix_count + 2),
+      'load arguments' => array($plugin['name']),
+      'access callback' => 'ctools_export_ui_task_access',
+      'access arguments' => array($plugin['name'], 'export', $prefix_count + 2),
+      'type' => MENU_LOCAL_TASK,
+    );
+  }
+
+  if ($plugin['allowed operations']['revert']) {
+    $plugin['menu']['items'] += array('revert' => array());
+    $plugin['menu']['items']['revert'] += array(
+      'path' => 'list/%ctools_export_ui/revert',
+      'title' => 'Revert',
+      'page callback' => 'ctools_export_ui_switcher_page',
+      // Note: Yes, 'delete' op is correct.
+      'page arguments' => array($plugin['name'], 'delete', $prefix_count + 2),
+      'load arguments' => array($plugin['name']),
+      'access callback' => 'ctools_export_ui_task_access',
+      'access arguments' => array($plugin['name'], 'revert', $prefix_count + 2),
+      'type' => MENU_CALLBACK,
+    );
+  }
+
+  if ($plugin['allowed operations']['delete']) {
+    $plugin['menu']['items'] += array('delete' => array());
+    $plugin['menu']['items']['delete'] += array(
+      'path' => 'list/%ctools_export_ui/delete',
+      'title' => 'Delete',
+      'page callback' => 'ctools_export_ui_switcher_page',
+      'page arguments' => array($plugin['name'], 'delete', $prefix_count + 2),
+      'load arguments' => array($plugin['name']),
+      'access callback' => 'ctools_export_ui_task_access',
+      'access arguments' => array($plugin['name'], 'delete', $prefix_count + 2),
+      'type' => MENU_CALLBACK,
+    );
+  }
+
+  if ($plugin['allowed operations']['clone']) {
+    $plugin['menu']['items'] += array('clone' => array());
+    $plugin['menu']['items']['clone'] += array(
+      'path' => 'list/%ctools_export_ui/clone',
+      'title' => 'Clone',
+      'page callback' => 'ctools_export_ui_switcher_page',
+      'page arguments' => array($plugin['name'], 'clone', $prefix_count + 2),
+      'load arguments' => array($plugin['name']),
+      'access callback' => 'ctools_export_ui_task_access',
+      'access arguments' => array($plugin['name'], 'clone', $prefix_count + 2),
+      'type' => MENU_CALLBACK,
+    );
+  }
+
+  if ($plugin['allowed operations']['enable']) {
+    $plugin['menu']['items'] += array('enable' => array());
+    $plugin['menu']['items']['enable'] += array(
+      'path' => 'list/%ctools_export_ui/enable',
+      'title' => 'Enable',
+      'page callback' => 'ctools_export_ui_switcher_page',
+      'page arguments' => array($plugin['name'], 'enable', $prefix_count + 2),
+      'load arguments' => array($plugin['name']),
+      'access callback' => 'ctools_export_ui_task_access',
+      'access arguments' => array($plugin['name'], 'enable', $prefix_count + 2),
+      'type' => MENU_CALLBACK,
+    );
+  }
+
+  if ($plugin['allowed operations']['disable']) {
+    $plugin['menu']['items'] += array('disable' => array());
+    $plugin['menu']['items']['disable'] += array(
+      'path' => 'list/%ctools_export_ui/disable',
+      'title' => 'Disable',
+      'page callback' => 'ctools_export_ui_switcher_page',
+      'page arguments' => array($plugin['name'], 'disable', $prefix_count + 2),
+      'load arguments' => array($plugin['name']),
+      'access callback' => 'ctools_export_ui_task_access',
+      'access arguments' => array($plugin['name'], 'disable', $prefix_count + 2),
+      'type' => MENU_CALLBACK,
+    );
+  }
+
+  // Define some redirects that should happen after edit/add/clone/delete operations.
+  $plugin['redirect'] += array(
+    'add' => $base_path,
+    'clone' => $base_path,
+    'edit' => $base_path,
+    'delete' => $base_path,
+    'revert' => $base_path,
+    'import' => $base_path,
+  );
+
+  // Define form elements.
+  $plugin['form'] += array(
+    'settings' => function_exists($plugin['name'] . '_form') ? $plugin['name'] . '_form' : '',
+    'validate' => function_exists($plugin['name'] . '_form_validate') ? $plugin['name'] . '_form_validate' : '',
+    'submit' => function_exists($plugin['name'] . '_form_submit') ? $plugin['name'] . '_form_submit' : '',
+  );
+
+  // Define strings.
+
+  // For all strings, %title may be filled in at a later time via str_replace
+  // since we do not know the title now.
+  $plugin['strings'] += array(
+    'title' => array(),
+    'confirmation' => array(),
+    'help' => array(),
+    'message' => array(),
+  );
+
+  // Strings used in drupal_set_title().
+  $plugin['strings']['title'] += array(
+    'add' => t('Add a new @plugin', array('@plugin' => $plugin['title singular'])),
+    // The "%title" will be replaced in ctools_export_ui_form(), as in this
+    // stage we dont have the specific exportable object.
+    'edit' => t('Edit @plugin %title', array('@plugin' => $plugin['title singular'])),
+    'clone' => t('Clone @plugin %title', array('@plugin' => $plugin['title singular'])),
+
+    'import' => t('Import @plugin', array('@plugin' => $plugin['title singular'])),
+    'export' => t('Export @plugin %title', array('@plugin' => $plugin['title singular'])),
+  );
+
+  // Strings used in confirmation pages.
+  $plugin['strings']['confirmation'] += array(
+    'revert' => array(),
+    'delete' => array(),
+    'add' => array(),
+    'edit' => array(),
+  );
+
+  $plugin['strings']['confirmation']['revert'] += array(
+    'question' => t('Are you sure you want to revert %title?'),
+    'information' => t('This action will permanently remove any customizations made to this item.'),
+    'success' => t('The item has been reverted.'),
+  );
+
+  $plugin['strings']['confirmation']['delete'] += array(
+    'question' => t('Are you sure you want to delete %title?'),
+    'information' => t('This action will permanently remove this item from your database..'),
+    'success' => t('The item has been deleted.'),
+  );
+
+  $plugin['strings']['confirmation']['add'] += array(
+    'success' => t('%title has been created.'),
+    'fail' => t('%title could not be created.'),
+  );
+
+  $plugin['strings']['confirmation']['edit'] += array(
+    'success' => t('%title has been updated.'),
+    'fail' => t('%title could not be updated.'),
+  );
+
+  // Strings used in $forms.
+  $plugin['strings']['help'] += array(
+    'import' => t('You can import an exported definition by pasting the exported object code into the field below.'),
+  );
+
+  // Strings used in drupal_set_message().
+  $plugin['strings']['message'] += array(
+    'enable' => t('@plugin %title was enabled.', array('@plugin' => $plugin['title singular proper'])),
+    'disable' => t('@plugin %title was disabled.', array('@plugin' => $plugin['title singular proper'])),
+    'no items' => t('There are no @titles to display.', array('@titles' => $plugin['title plural'])),
+  );
+}
+
+/**
+ * Get the class to handle creating a list of exportable items.
+ *
+ * If a plugin does not define a lister class at all, then the default
+ * lister class will be used.
+ *
+ * @return
+ *   Either the lister class or FALSE if one could not be had.
+ */
+function ctools_export_ui_get_handler($plugin) {
+  $cache = &drupal_static(__FUNCTION__, array());
+  if (empty($cache[$plugin['name']])) {
+    // If a list class is not specified by the plugin, fall back to the
+    // default ctools_export_ui plugin instead.
+    if (empty($plugin['handler'])) {
+      $default = ctools_get_export_ui('ctools_export_ui');
+      $class = ctools_plugin_get_class($default, 'handler');
+    }
+    else {
+      $class = ctools_plugin_get_class($plugin, 'handler');
+    }
+
+    if ($class) {
+      $cache[$plugin['name']] = new $class();
+      $cache[$plugin['name']]->init($plugin);
+    }
+  }
+  return !empty($cache[$plugin['name']]) ? $cache[$plugin['name']] : FALSE;
+}
+
+/**
+ * Get the base path from a plugin.
+ *
+ * @param $plugin
+ *   The plugin.
+ *
+ * @return
+ *   The menu path to the plugin's list.
+ */
+function ctools_export_ui_plugin_base_path($plugin) {
+  return $plugin['menu']['menu prefix'] . '/' . $plugin['menu']['menu item'];
+}
+
+/**
+ * Get the path to a specific menu item from a plugin.
+ *
+ * @param $plugin
+ *   The plugin name.
+ * @param $item_id
+ *   The id in the menu items from the plugin.
+ * @param $export_key
+ *   The export key of the item being edited, if it exists.
+ * @return
+ *   The menu path to the plugin's list.
+ */
+function ctools_export_ui_plugin_menu_path($plugin, $item_id, $export_key = NULL) {
+  $path = $plugin['menu']['items'][$item_id]['path'];
+  if ($export_key) {
+    $path = str_replace('%ctools_export_ui', $export_key, $path);
+  }
+  return ctools_export_ui_plugin_base_path($plugin) . '/' . $path;
+}
+
+/**
+ * Helper function to include CTools plugins and get an export-ui exportable.
+ *
+ * @param $plugin_name
+ *   The plugin that should be laoded.
+ */
+function ctools_get_export_ui($plugin_name) {
+  ctools_include('plugins');
+  return ctools_get_plugins('ctools', 'export_ui', $plugin_name);
+
+}
+
+/**
+ * Helper function to include CTools plugins and get all export-ui exportables.
+ */
+function ctools_get_export_uis() {
+  ctools_include('plugins');
+  return ctools_get_plugins('ctools', 'export_ui');
+}
+
+/**
+ * Main page callback to manipulate exportables.
+ *
+ * This simply loads the object defined in the plugin and hands it off to
+ * a method based upon the name of the operation in use. This can easily
+ * be used to add more ops.
+ */
+function ctools_export_ui_switcher_page($plugin_name, $op) {
+  $args = func_get_args();
+  $js = !empty($_REQUEST['js']);
+
+  // Load the $plugin information
+  $plugin = ctools_get_export_ui($plugin_name);
+  $handler = ctools_export_ui_get_handler($plugin);
+
+  if ($handler) {
+    $method = $op . '_page';
+    if (method_exists($handler, $method)) {
+      // replace the first two arguments:
+      $args[0] = $js;
+      $args[1] = $_POST;
+      return call_user_func_array(array($handler, $method), $args);
+    }
+  }
+  else {
+    return t('Configuration error. No handler found.');
+  }
+}