<?php
// $Id: filefield_styles.module,v 1.1.2.1 2009-12-10 22:16:42 aaron Exp $

/**
 *  @file
 *  Filefield Styles
 *  Creates display formatters for Filefield, based on mimetype.
 */

/**
 *  Implements hook_styles_containers().
 */
function filefield_styles_styles_containers() {
  $containers = array(
    'filefield' => array(
      'containers' => array(
        'default' => array(
          'label' => t('Default Filefield Styles'),
          'weight' => 10,
          'preview theme' => 'filefield_styles_preview_default',
          'data' => array(),
          'filter callback' => 'filefield_styles_styles_formatter_filter_default',
          'themes' => array(
            'field_formatter_styles' => 'filefield_styles_field_formatter_styles_default',
            'styles' => 'filefield_styles_styles_default',
            'preview' => 'filefield_styles_preview_default',
          ),
        ),
      ),
    ),
  );
  if (module_exists('imagecache')) {
    $containers['filefield']['containers']['image'] = array(
      'label' => t('Image Styles'),
      'weight' => 0,
      'preview theme' => 'image_style_preview',
      'data' => array(
        'streams' => array(
          'public',
          'private',
        ),
        'mimetypes' => array(
          'image/png',
          'image/gif',
          'image/jpeg',
        ),
      ),
      'filter callback' => 'filefield_styles_styles_formatter_filter',
      'themes' => array(
        'field_formatter_styles' => 'filefield_styles_field_formatter_styles',
        'styles' => 'filefield_styles_styles',
        'preview' => 'image_style_preview',
      ),
      'help' => t('Imagecache will transform images to your choosing, such as by scaling and cropping. You can !manage.', array('!manage' => l(t('manage your imagecache styles here'), 'admin/build/imagecache'))),
    );
  }
  return $containers;
}


function theme_filefield_styles_styles_default($file_type, $style_name, $object, $variables = array()) {
  $path = drupal_get_path('module', 'filefield_styles');
  $alt = $title = t('Thumbnail for !filename.', array('!filename' => $object->filename));
  $thumbnail = theme('image', $path . '/images/file-unknown.png', $alt, $title, array('class' => 'file-unknown'));
  return $thumbnail;
}

function theme_filefield_styles_preview_default($variables) {
  return 'default: theme_filefield_styles_preview_default';
}

function theme_filefield_styles_field_formatter_styles_default($variables) {
  $file = $variables['object'];
  $file_url = file_create_url($file->filepath);
  return l($file->filename, $file_url);
}

/**
 *  The 'Default' file style is a fallback when nothing else resolves.
 */
function filefield_styles_styles_formatter_filter_default() {
  // This is a fallback to handle all generic files.
  return TRUE;
}

function filefield_styles_styles_formatter_filter($variables) {
  if (isset($variables['object'])) {
    $object = $variables['object'];
    $container = $variables['container'];
    return in_array($object->filemime, $container['data']['mimetypes']);
  }
}

function theme_filefield_styles_styles($file_type, $style_name, $object, $variables = array()) {
  $alt = $title = $object->description;
  return theme('imagecache', $style_name, $object->filepath, $alt, $title);
}

/**
 *  Implements hook_styles_presets().
 */
function filefield_styles_styles_presets() {
  $presets = array();
  foreach (imagecache_presets() as $style) {
    $presets['filefield'][$style['presetname']]['image'] = array($style['presetname']);
    $presets['filefield'][$style['presetname']]['default'] = array($style['presetname']);
  }
  return $presets;
}

/**
 *  Implements hook_styles_styles().
 */
function filefield_styles_styles_styles() {
  $styles = array();
  foreach (imagecache_presets() as $style) {
    // Save the module & storage for the Image module namespace.
    $style['image_module'] = $style['module'];
    $style['image_storage'] = $style['storage'];
    $styles[$style['presetname']] = $style;
  }
  $default_styles = $styles;
  return array(
    'filefield' => array(
      'containers' => array(
        'image' => array('styles' => $styles),
        'default' => array('styles' => $default_styles),
      ),
    ),
  );
}

function theme_filefield_styles_image_style_preview($field_type, $container_name, $style_name) {
  $styles = image_styles();
  if (isset($styles[$style_name])) {
    module_load_include('inc', 'image', 'image.admin');
    drupal_add_css(drupal_get_path('module', 'image') . '/image.admin.css');

    // Ensure we revert the module & storage namespace for the Image module.
    $styles[$style_name]['module'] = $styles[$style_name]['image_module'];
    $styles[$style_name]['storage'] = $styles[$style_name]['image_storage'];

    return theme('image_style_preview', array('style' => $styles[$style_name]));
  }
}

/**
 * Implement hook_theme().
 */
function filefield_styles_theme() {
  return array(
    // Theme functions in filefield_styles.module.
    'filefield_style' => array(
      'variables' => array(
        'style_name' => NULL,
        'path' => NULL,
        'alt' => '',
        'title' => '',
        'attributes' => array(),
        'getsize' => TRUE,
      ),
    ),

    // Theme functions in filefield_styles.admin.inc.
    'filefield_style_list' => array(
      'variables' => array('styles' => NULL),
    ),

    // Display a image style preset.
    'filefield_styles_image_style_preview' => array(
      'variables' => array('field_type' => NULL, 'container_name' => NULL, 'style_name' => NULL),
    ),

//     'filefield_styles_field_formatter_styles' => array(
//       'variables' => array('element' => NULL, 'style' => NULL),
//     ),

    'filefield_styles_styles' => array(
      'variables' => array('field_type' => NULL, 'style_name' => NULL, 'object' => NULL, 'variables' => array()),
    ),
//     'filefield_styles_field_formatter_styles_default' => array(
//       'variables' => array('element' => NULL, 'style' => NULL),
//     ),
    'filefield_styles_styles_default' => array(
      'variables' => array('field_type' => NULL, 'style_name' => NULL, 'object' => NULL, 'variables' => array()),
    ),
    'filefield_styles_preview_default' => array(
      'variables' => array('field_type' => NULL, 'container_name' => NULL, 'style_name' => NULL),
    ),
  );
}