Added README.txt and template file checking plus fixed problem with new nodes.

// README.txt,v 0.1 2011/05/02 xalen

To get this module working requires two steps, adding the field to the content

type and outputting the field by modifying the CSS template.

 * Set up the fields you want prefixing them with _css_ so that they read:

   field_css_[your_field_name].

 * Copy template/css.tpl.php into a nodecss folder within your files directory

   and edit as necessary.

You may test the module with the Bartik theme by adding the field

"field_css_wrapper_bg_image". There is no need to copy the CSS template for this

fieldname to work.

Please see the comments in css.tpl.php for more examples and instructions.

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    '#title' => t('Generate custom css for these node types'),

    '#options' => $options,

    '#default_value' => variable_get('nodecss_node_types', array()),

    '#description' => t('A CSS file will be generated for these node types.'),

    '#description' => t('CSS will be generated for these node types.'),

  );

  $form['nodecss_settings'] = array(

    '#default_value' => variable_get('nodecss_directory', 'nodecss'),

    '#description' => t("The directory to save CSS files to."),

  );

  $form['nodecss_settings']['nodecss_use_custom'] = array(

    '#type' => 'checkbox',

    '#title' => t('Use a custom CSS template file'),

    '#default_value' => variable_get('nodecss_use_custom', 0),

  );

  $form['nodecss_settings']['nodecss_template_folder'] = array(

    '#type' => 'textfield',

    '#title' => t('Node CSS template folder'),

    '#field_prefix' => t('public://'),

    '#default_value' => variable_get('nodecss_template_folder', 'nodecss'),

    '#description' => t("The location of your custom CSS template file."),

  );

  $form['nodecss_settings']['nodecss_hide_field'] = array(

    '#type' => 'checkbox',

    '#title' => t('Override and remove field from node display'),

    '#default_value' => variable_get('nodecss_display_messages', 0),

    '#description' => t('Display messages when a CSS file is created or updated.'),

  );

  $form['#validate'][] = 'nodecss_admin_settings_validate';

  $form['#submit'][] = 'nodecss_admin_settings_submit';

  return system_settings_form($form);

}

/*

 * Check the CSS template files exist.

 */

function nodecss_admin_settings_validate($form, &$form_state) {

  if ($form_state['values']['nodecss_use_custom'] && !file_exists('public://' . $form_state['values']['nodecss_template_folder'] . '/css.tpl.php')) {

    form_set_error('nodecss_template_folder', t('The template file does not exist. <br />Please copy the file from @d to the relevant location in your files directory.', array('@d' => drupal_get_path('module', 'nodecss') . '/template/css.tpl.php')));

  }

  if (!$form_state['values']['nodecss_use_custom'] && !file_exists(drupal_get_path('module', 'nodecss') . '/template/css.tpl.php')) {

    form_set_error('nodecss_use_custom', t('The default module template file does not exist. Please either use a custom template file or restore it from the original module.'));

  }

}

/*

 * Flush the theme cache so the correct template file is used.

 */

function nodecss_admin_settings_submit($form, &$form_state) {

  drupal_theme_rebuild();

}

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 * Implements hook_theme().

 */

function nodecss_theme() {

  $template_path = variable_get('nodecss_use_custom', 0) ? 'sites/default/files/' . variable_get('nodecss_template_folder', 'nodecss') : drupal_get_path('module', 'nodecss') . '/template';

  return array(

    'nodecss' => array(

      'variables' => array('css_vars' => NULL),

      'path' => drupal_get_path('module', 'nodecss') . '/template',

      'path' => $template_path,

      'template' => 'css',

    ),

  );

*/

/**

 * Save CSS if node type is set to generate CSS and the current node is set to

 * generate CSS.

 * Save CSS on insert if node type is set to generate CSS.

 */

function nodecss_node_insert($node) {

  nodecss_node_save_css($node);

}

/**

 * Save CSS on update if node type is set to generate CSS.

 */

function nodecss_node_presave($node) {

function nodecss_node_update($node) {

  nodecss_node_save_css($node);

}

/**

 * Save CSS if node type is set to generate CSS.

 */

function nodecss_node_save_css($node) {

  if (nodecss_node_enabled($node) && user_access('generate css')) {

    // Save individual CSS files.

  elseif (nodecss_node_enabled($node) && !user_access('generate css') && variable_get('nodecss_display_messages', 1) == 1) {

    drupal_set_message(t("CSS was not generated because you don't have @link to.", array('@link' => l('permission', 'admin/people/permissions', array('fragment' => 'module-nodecss')))));

  }

}

/**

    }

  }

  else { // Drupal couldn't create/save to directory.

    drupal_set_message(t("@directory does not exist or is not writeable please check the folder permissions", array('@directory' => $directory), 'error'));

    drupal_set_message(t("@directory does not exist or is not writeable please check the folder permissions", array('@directory' => $directory)), 'error');

  }

}