asset_wizard.inc in Asset 6

File

inc/asset_wizard.inc

<?php

define('ASSET_WIZARD_NEXT', 'Next');
define('ASSET_WIZARD_PREVIOUS', 'Back');
define('ASSET_WIZARD_CANCEL', 'Cancel');
define('ASSET_WIZARD_DELETE', 'Delete');
define('ASSET_WIZARD_SELECT', 'Select');
define('ASSET_THUMBNAIL', 'image');
define('ASSET_WIZARD_FINAL_STEP', 4);
define('ASSET_WIZARD_FINISH_REDIRECT', 'node');
require_once drupal_get_path('module', 'asset') . '/inc/asset_wizard.themes.inc';

/**
 * Form Functions =============================================================
 */

/**
 * Main form builder function for the asset wizard.
 */
function asset_wizard_form(&$form_state) {
  $form_values =& $form_state['post'];
  if (empty($form_state['post'])) {
    $form_values = NULL;
  }
  $oper = $_GET['op'];

  // We need some values passed around:
  // $op  for the "delete" button on the asset selection screen
  // $fieldname for the direct "select" button
  if (!isset($_GET['noreset'])) {
    $_SESSION['asset_op'] = $_GET['op'];
  }
  if (isset($_GET['textfield'])) {
    list($fieldname, $lost) = split("\\]\\[", $_GET['textfield']);
    $fieldname = str_replace(array(
      "_",
      "[",
    ), "-", $fieldname);
    $fieldname = "edit-" . $fieldname . "-";
    $_SESSION['asset_fieldname'] = $fieldname;
  }
  elseif (isset($_GET['textarea']) || $_GET['q'] == "asset/wizard/tinymce") {
    unset($_SESSION['asset_fieldname']);
    $_SESSION['asset_op'] = "tinymce";
  }

  // Allow the aid to be passed in the querystring
  if ($form_values == null && is_numeric($_GET['aid'])) {
    $form_values['step'] = 2;
    $form_values['aid'] = $_GET['aid'];
  }

  // Step Handling
  if (!isset($form_values)) {
    $step = 1;
  }
  else {
    list($lost, $lost, $field) = split("-", $fieldname);
    switch ($form_values['op']) {
      case t('Back'):
        if ($field == ASSET_THUMBNAIL) {
          $step = 1;
        }
        elseif (isset($form_values['delete_cancel'])) {
          unset($_SESSION['messages']);
          drupal_goto(filter_xss($_GET['q']), 'dir=' . $form_values['dir']);
        }
        else {
          $step = $form_values['step'] > 1 ? $form_values['step'] - 1 : 1;
        }
        break;
      case t('Next'):
      case t('Finish'):
        if ($step == 1 && !$form_values['aid']) {
          break;

          // dont proceed without a valid aid.
        }
        if ($field == ASSET_THUMBNAIL && $form_values['step'] == 1) {

          // When inserting an image preview, don't offer the option to select a size
          $step = $form_values['step'] + 2;
        }
        else {
          $step = $form_values['step'] + 1;
        }
        break;
      case t('Edit'):
        if (!empty($form_values['aid'])) {
          $asset = asset_load(array(
            'aid' => $form_values['aid'],
          ));
          $form['edit-asset'] = array(
            '#type' => 'hidden',
            '#value' => '1',
          );
          $form['aid'] = array(
            '#type' => 'hidden',
            '#value' => $form_values['aid'],
          );
          $fileinfo = pathinfo($asset->filename);
          if (strlen($fileinfo['extension']) == 3) {

            // This is a regular file
            $form['filename'] = array(
              '#title' => Filename,
              '#type' => 'textfield',
              '#value' => $asset->filename,
              '#description' => t("Warning: you are changing the actual filename. If you're not sure what you're doing, you should leave this unchanged."),
            );
          }
          else {

            // Not a regular file, could be a youtube movie for instance (filename $instance.youtube)
            $form['filename'] = array(
              '#title' => Filename,
              '#type' => 'item',
              '#value' => $asset->filename,
              '#description' => t("You can only change the filename of regular files, not of YouTube movies for instance."),
            );
          }
          $form['old-filename'] = array(
            '#type' => 'hidden',
            '#value' => $asset->filename,
          );
          $form['old-parent'] = array(
            '#type' => 'hidden',
            '#value' => $asset->dirname,
          );
          $form = array_merge($form, asset_wizard_default_fields($form_values));
          $form['title']['#value'] = $asset->title;
          $form['author']['#value'] = $asset->author;
          $form['description']['#value'] = $asset->description;
        }
        break;
      case t('Delete'):
        if (!empty($form_values['aid'])) {
          if (!$form_values['deleteme']) {
            $form_values['step'] = 1;
            $form['delete_warning'] = array(
              '#type' => 'markup',
              '#value' => t("You are about to delete the selected asset. Press the delete button to confirm deletion."),
            );
            $form['deleteme'] = array(
              '#type' => 'hidden',
              '#value' => 1,
            );
            form_set_error('aid');
          }
          elseif ($form_values['deleteme'] == 1) {
            $form['deleteme'] = array(
              '#type' => 'hidden',
              '#value' => 0,
            );
          }
        }
      default:

        // only back,next,finish buttons should effect the step
        $step = $form_values['step'];
        break;
    }
  }
  if ($oper == t('Upload')) {
    $step = 1;
  }
  $form['step'] = array(
    '#type' => 'hidden',
    '#value' => $step,
  );
  drupal_set_title("Asset Wizard - Step {$step}");

  // Extract asset info from the macro or aid
  if ($form_values['macro']) {
    $macros = asset_get_macros(' ' . $form_values['macro'] . ' ');
    $macro = array_pop($macros);
    if ($macro['aid']) {
      $asset = asset_load($macro['aid']);
    }
  }
  else {
    if ($form_values['aid']) {
      $asset = asset_load($form_values['aid']);
      $macro['aid'] = $form_values['aid'];
    }
  }
  if (is_object($asset) && $step > 1) {
    $form[] = array(
      '#value' => '<div class="asset-selected-preview">' . asset_js_preview($asset->aid, false, true) . '</div>',
    );
  }
  switch ($step) {
    case 1:
      asset_wizard_form_asset_selection($form, $form_values, $asset);
      break;
    case 2:
      $form['macro'] = array(
        '#type' => 'hidden',
        '#value' => asset_build_macro($macro),
      );
      $form['help'] = array(
        '#value' => t('Select a formatting option, or <em>Choose</em> or <em>Upload</em> a new asset.'),
      );
      $formatters = asset_get_formatters();
      $ext = strtolower($asset->extension);
      $default = variable_get('asset_default_formatter_' . $asset->type . '_' . $ext, 'asset:link');
      if (is_array($formatters[$asset->type][$ext])) {
        foreach ($formatters[$asset->type][$ext] as $formatter) {
          $form['formatter'][] = array(
            '#type' => 'radio',
            '#title' => $formatter['name'],
            '#return_value' => $formatter['module'] . ':' . $formatter['format'],
            '#default_value' => !isset($_GET['format']) ? $default : $_GET['format'],
            '#description' => $formatter['description'] ? $formatter['description'] : NULL,
            '#parents' => array(
              'formatter',
            ),
          );
        }
      }
      if (is_array($formatters[$asset->type]['*'])) {
        foreach ($formatters[$asset->type]['*'] as $formatter) {
          $form['formatter'][] = array(
            '#type' => 'radio',
            '#title' => $formatter['name'],
            '#return_value' => $formatter['module'] . ':' . $formatter['format'],
            '#default_value' => !isset($_GET['format']) ? $default : $_GET['format'],
            '#description' => $formatter['description'] ? $formatter['description'] : NULL,
            '#parents' => array(
              'formatter',
            ),
          );
        }
      }
      if (is_array($formatters['*']['*'])) {
        foreach ($formatters['*']['*'] as $formatter) {
          $form['formatter'][] = array(
            '#type' => 'radio',
            '#title' => $formatter['name'],
            '#return_value' => $formatter['module'] . ':' . $formatter['format'],
            '#default_value' => !isset($_GET['format']) ? $default : $_GET['format'],
            '#description' => $formatter['description'] ? $formatter['description'] : NULL,
            '#parents' => array(
              'formatter',
            ),
          );
        }
      }
      break;
    case 3:
      list($macro['formatter'], $macro['format']) = explode(':', $form_values['formatter']);
      $form['macro'] = array(
        '#type' => 'hidden',
        '#value' => asset_build_macro($macro),
      );
      $default_options['title'] = array(
        '#type' => 'textfield',
        '#title' => t('Title'),
        '#default_value' => $asset->title,
        '#size' => 40,
      );
      list($lost, $lost, $field) = split("-", $fieldname);
      if (!preg_match('@link@i', $form_values['formatter'])) {
        if ($field != ASSET_THUMBNAIL) {

          // Don't allow the option to select a width/height when inserting a node thumbnail
          $default_options['width'] = array(
            '#type' => 'textfield',
            '#title' => t('Width'),
            '#default_value' => !isset($_GET['width']) ? $asset->width : filter_xss($_GET['width']),
          );
          $default_options['height'] = array(
            '#type' => 'textfield',
            '#title' => t('Height'),
            '#default_value' => !isset($_GET['height']) ? $asset->height : filter_xss($_GET['height']),
          );
          $default_options['resizable'] = array(
            '#type' => 'hidden',
            '#value' => 'true',
          );
        }
        else {
          $default_options['width'] = array(
            '#type' => 'hidden',
            '#title' => t('Width'),
            '#default_value' => $asset->height,
          );
          $default_options['height'] = array(
            '#type' => 'hidden',
            '#title' => t('Height'),
            '#default_value' => $asset->width,
          );
        }
        $default_options['align'] = array(
          '#type' => 'select',
          '#title' => t('Alignment'),
          '#options' => array(
            'none' => t('None'),
            'left' => t('Left'),
            'center' => t('Center'),
            'right' => t('Right'),
          ),
          '#default_value' => !isset($_GET['align']) ? 'none' : filter_xss($_GET['align']),
        );
      }
      $module_options = (array) module_invoke($macro['formatter'], 'asset_formatter', 'options', $asset, $macro);
      $form['options'] = array_merge($default_options, $module_options);
      $form['options']['#tree'] = true;
      break;
    case 4:
      if (is_array($form_values['options'])) {
        foreach ($form_values['options'] as $k => $v) {
          if (!in_array($k, array(
            'aid',
            'formatter',
            'format',
          )) && $v) {
            $macro[$k] = $v;
          }
        }
      }
      $form['macro'] = array(
        '#type' => 'textarea',
        '#title' => 'Paste the following code into your text.',
        '#value' => asset_build_macro($macro),
      );

      // Create the preview code for the CCK field
      $is_image = array(
        'jpg',
        'jpeg',
        'png',
        'gif',
        'tif',
        'tiff',
        'bmp',
      );
      $a = asset_load(array(
        'aid' => $macro['aid'],
      ));

      // Preview the image
      if (in_array($a->extension, $is_image)) {
        if (variable_get('asset_imagecache', 0)) {
          $presets = imagecache_presets();
          $preset = $presets[variable_get('asset_imagecache', 0)]['presetname'];
          $preview = theme('imagecache', $preset, str_replace("//", "/", $a->filepath));
        }
        else {
          $asset = array(
            'aid' => $macro['aid'],
            'format' => 'image',
            'formatter' => 'asset',
            'width' => '120',
            'height' => '80',
          );
          $preview = asset_render_macro($asset);
        }
      }
      else {

        // Try to auto-detect the format
        $preview = asset_preview($macro['aid']);
      }
      $form['preview'] = array(
        '#type' => 'hidden',
        '#value' => $preview,
      );
      $form['author'] = array(
        '#type' => 'hidden',
        '#value' => $a->author,
      );
      $form[] = array(
        '#value' => asset_wizard_finish(),
      );
      break;
  }

  // This is important. If we're on the final step, we tell drupal to use the
  // normal redirect functionality. That means the browser goes to whatever page
  // after the final submit. All previous steps don't redirect, so just post
  // back to this form.
  $form['#redirect'] = FALSE;
  if ($form['#redirect'] == FALSE) {
    if ($step == 1) {
      $form['#redirect'] = NULL;
    }
  }
  $form['#multistep'] = TRUE;
  $form['#tree'] = TRUE;
  $form['footer']['#tree'] = false;

  // We only want to display the delete button on the "Choose" page
  if ($step != 1 || !empty($_SESSION['asset_op']) || $_GET['op'] == 'Delete Folder') {
    if ($_GET['op'] == t("Delete Folder")) {
      $form['delete_cancel'] = array(
        '#type' => 'hidden',
        '#value' => 1,
      );
      $form['dir'] = array(
        '#type' => 'hidden',
        '#value' => filter_xss($_GET['dir']),
      );
    }
    $form['footer']['previous'] = array(
      '#type' => 'submit',
      '#value' => t(ASSET_WIZARD_PREVIOUS),
      '#attributes' => isset($form_values['op']) || $step > 1 || $_GET['op'] == t("Delete Folder") ? array() : array(
        'disabled' => 'disabled',
      ),
    );
  }
  if ($_GET['op'] == 'Delete Folder') {
    $form['footer']['next'] = array(
      '#type' => 'submit',
      '#value' => t(ASSET_WIZARD_NEXT),
    );
  }
  elseif ($_SESSION['asset_op'] == 'Upload' || $_SESSION['asset_op'] == 'New Folder' || $oper == t('Upload') || $oper == 'Embed' || $oper == 'YouTube Embed' || $oper == 'YouTube Sync') {
    $form['footer']['previous'] = array(
      '#type' => 'submit',
      '#value' => t(ASSET_WIZARD_PREVIOUS),
    );
    $form['footer']['finish'] = array(
      '#type' => 'submit',
      '#value' => t('Next'),
    );
  }
  elseif ($form_state['post']['op'] == 'Edit' && !empty($form_state['post']['aid'])) {
    $form['footer']['previous'] = array(
      '#type' => 'submit',
      '#value' => t(ASSET_WIZARD_PREVIOUS),
    );
    $form['footer']['finish'] = array(
      '#type' => 'submit',
      '#value' => t('Finish'),
    );
  }
  elseif ($step != 1 || $form_state['post']['op'] != 'Edit') {
    if ($_SESSION['asset_op'] != "tinymce") {
      $form['footer']['select'] = array(
        '#type' => 'button',
        '#value' => t('Select'),
      );
    }
    elseif ($step != ASSET_WIZARD_FINAL_STEP - 1) {
      $form['footer']['next'] = array(
        '#type' => 'submit',
        '#value' => t(ASSET_WIZARD_NEXT),
      );
    }
    $form['footer']['delete'] = array(
      '#type' => 'submit',
      '#value' => t('Delete'),
    );
    $form['footer']['edit'] = array(
      '#type' => 'submit',
      '#value' => t('Edit'),
    );
  }
  $form['footer']['cancel'] = array(
    '#type' => 'submit',
    '#value' => t(ASSET_WIZARD_CANCEL),
    '#attributes' => array(
      'alt' => t('Cancel and Return'),
    ),
  );
  if ($step == ASSET_WIZARD_FINAL_STEP - 1) {
    $form['footer']['finish'] = array(
      '#type' => 'submit',
      '#value' => t('Finish'),
    );
  }
  return $form;
}

/**
 * Form builder for step 1 of the asset wizard.  This step is the most intensive
 * so it has been separated out for clarity.
 */
function asset_wizard_form_asset_selection(&$form, &$form_state, $current_asset = NULL) {
  global $user;
  static $types, $ops;
  if (!isset($types)) {
    foreach (module_implements('asset_type') as $module) {
      $types[$module] = module_invoke($module, 'asset_type', 'info');
      foreach ($types[$module] as $delta => $type) {
        $ops[$type['value']] = array(
          'module' => $module,
          'delta' => $delta,
        );
      }
    }
  }
  if ($_SESSION['asset_op'] == 'Delete Folder') {
    $dir = filter_xss($_GET['dir']);
    if (empty($dir) || strtolower($dir) == strtolower($user->name)) {
      drupal_set_message(t('You can not delete the main folder.'), 'error');
      drupal_goto(filter_xss($_GET['q']), 'dir=' . $dir);
    }
    else {

      // First check if this folder has sub-folders, these need to be deleted first
      $subdirs = db_query("SELECT aid FROM {asset} WHERE type='directory' AND dirname='%s' LIMIT 1", $dir);
      if (db_result($subdirs)) {

        // There is at least one sub-folder
        drupal_set_message(t('This folder contains at least one sub-folder.<br/>You need to delete these first before continuing.'), 'error');
        drupal_goto(filter_xss($_GET['q']), 'dir=' . $dir);
      }
      else {

        // 	No subfolders, let's display the warning
        drupal_set_message('Warning: you are about to delete this folder and all assets within this folder.');
        $form['warning'] = array(
          '#value' => t('Click the Next button if you are sure you want to delete this folder and its content.<br/>Click the Back button if you want to go back.<br/><br/>This operation CAN NOT be undone.'),
        );
        $form['delete_confirm'] = array(
          '#type' => 'hidden',
          '#value' => 1,
        );
        return;
      }
    }
  }
  $op = false;
  if ($form_state['op'] == t('Back')) {

    // if a user got here by clicking back, then they are trying to get to the
    // main selection screen.
    $op = false;
  }
  elseif (isset($form_state['op']) && isset($ops[$state['op']])) {
    $op = $form_state['op'];
  }
  elseif ($ops[$_GET['op']]) {
    $op = $_GET['op'];

    // unset op, so that links that re-use the query string wont use it again.
    unset($_GET['op']);
  }
  if (!empty($op)) {
    $module = $ops[$op]['module'];
    $delta = $ops[$op]['delta'];
    $form = array_merge($form, asset_wizard_default_fields($form_state));
    $form = array_merge($form, module_invoke($module, 'asset_type', 'form', $delta, $form_state));
    $form['module'] = array(
      '#type' => 'value',
      '#value' => $module,
    );
    $form['delta'] = array(
      '#type' => 'value',
      '#value' => $delta,
    );
  }
  elseif (empty($op) && ($form_state['op'] != 'Edit' || empty($form_state['aid']))) {

    // normal asset selection form
    // set directory
    if ($current_asset && asset_check_directory($current_asset->dirname)) {
      $dir = $current_asset->dirname;
    }
    elseif (isset($_GET['dir']) && asset_check_directory($_GET['dir'])) {
      $dir = $_GET['dir'];
    }
    elseif (asset_check_directory($user->name, FILE_CREATE_DIRECTORY, NULL, array(
      'parent' => '',
      'title' => $user->name,
    ))) {
      $dir = $user->name;
    }
    else {
      $dir = '';
    }
    $form['parent'] = array(
      '#type' => 'hidden',
      '#value' => $form_state['parent'] ? $form_state['parent'] : $dir,
    );

    // copy querystring args for building links
    $query = $_GET;
    unset($query['q']);

    // create directory crumbs and '..' entry
    $crumbs = array();
    if (file_create_path($dir) != file_directory_path()) {
      $parts = explode('/', $dir);
      while ($current = array_pop($parts)) {
        $query['dir'] = $parts ? join('/', $parts) . '/' . $current : $current;
        $crumbs[] = l($current, $_GET['q'], array(
          'query' => asset_build_query($query),
        ));
      }
      $query['dir'] = substr($dir, 0, strrpos($dir, '/'));
      $list = '<li class="parent">' . l('..', $_GET['q'], array(
        'query' => asset_build_query($query),
      )) . '</li>';
    }
    $query['dir'] = '';
    $crumbs[] = l('assets', $_GET['q'], array(
      'query' => asset_build_query($query),
    ));

    // build directory list and filename options array
    $sql = 'SELECT DISTINCT(a.aid),a.filename FROM {asset} a ';
    $args = array();

    // for everyone but users with 'administer assets' access control,
    // only get assets with proper permissions.
    if (user_access('administer assets')) {
      $sql .= 'WHERE a.dirname=\'%s\' ';
      $args = array(
        $dir,
      );
    }
    else {

      // Permissions are not functioning correctly, as per #543 and #489
      $sql .= 'LEFT JOIN {asset_role} r ON a.aid=r.aid ' . 'WHERE (a.uid = %d ' . 'OR a.status = 1 ' . 'OR (r.rid IN (%s) AND r.status = 1) ) ' . 'AND a.dirname=\'%s\' ';
      $args = array(
        $user->uid,
        join(array_keys($user->roles), ','),
        $dir,
      );

      //$sql .= 'WHERE a.dirname="%s" ';

      //$args = array($dir);
    }
    $sql .= "ORDER BY a.filename";
    $result = db_query($sql, $args);
    $options = array();
    while ($asset = db_fetch_object($result)) {
      $asset = asset_load($asset->aid);

      // add to list if directory or add to options if file
      if ($asset->type == 'directory') {

        // if wizard was loaded with an aid, remove it
        if ($query['aid']) {
          unset($query['aid']);
        }
        $query['dir'] = ($asset->dirname ? $asset->dirname . '/' : '') . $asset->filename;
        $list .= '<li class="folder">' . l($asset->title, $_GET['q'], array(
          'query' => asset_build_query($query),
        )) . '</li>';
      }
      else {
        $options[$asset->aid] = $asset->filename;
      }
    }
    $form['dir_crumb'] = array(
      '#value' => '/ ' . join(' / ', array_reverse($crumbs)),
    );
    if ($list) {
      $form['folder_list'] = array(
        '#value' => '<ul class="folder-list">' . $list . '</ul>',
      );
    }
    $form['aid'] = array(
      '#type' => 'select',
      '#size' => 10,
      '#options' => $options,
    );
    if ($current_asset->aid) {
      $form['aid']['#default_value'] = $current_asset->aid;
    }
    $form['asset_preview'] = array(
      '#value' => '<div class="asset-preview"></div>',
    );
    $form['#tree'] = false;
    $form['#theme'] = 'asset_wizard_selection_form';
    return $form;
  }
}

/**
 * This is the base form for asset types.
 */
function asset_wizard_default_fields($form_values) {
  $parentdir = $form_values['parent'] ? $form_values['parent'] : $_GET['dir'];
  $parentdir = trim(str_replace(file_directory_path(), '', $parentdir), '/');
  $parent = asset_load(array(
    'dirname' => dirname($parentdir),
    'filename' => basename($parentdir),
  ));
  $form['parent'] = array(
    '#type' => 'hidden',
    '#value' => file_create_path($form_values['parent'] ? $form_values['parent'] : $_GET['dir']),
  );
  $form['parent'] = array(
    '#type' => 'select',
    '#title' => t('Directory'),
    '#default_value' => $form_values['parent'] ? $form_values['parent'] : $_GET['dir'],
    '#options' => asset_wizard_directory_options(),
    '#weight' => -5,
  );
  $form['title'] = array(
    '#type' => 'textfield',
    '#title' => t('Title'),
  );
  $form['author'] = array(
    '#type' => 'textfield',
    '#title' => t('Author'),
  );
  $form['description'] = array(
    '#type' => 'textarea',
    '#title' => t('Description'),
    '#rows' => 3,
  );
  $form['permissions'] = array(
    '#theme' => 'asset_upload_permissions',
    '#tree' => false,
  );
  $default_status = 1;
  if (isset($form_values['aid']) && is_numeric($form_values['aid'])) {
    $default_status = db_result(db_query("SELECT status FROM {asset} WHERE aid=%d LIMIT 1", $form_values['aid']));
  }
  $form['permissions']['status'] = array(
    '#type' => 'radios',
    '#title' => t('Permissions'),
    '#description' => t('Select the permissions for this asset.  Selecting Public will allow anyone with asset permissions to use this asset.  By selecting Private, you can restrict which roles, if any, can access this asset.  If you select Private and do not select any roles, you will be the only user with access to this asset.'),
    '#required' => true,
    '#default_value' => $default_status,
    '#options' => array(
      ASSET_PUBLIC => t('Public'),
      ASSET_PRIVATE => t('Private'),
    ),
  );
  $form['permissions']['roles'] = array(
    '#type' => 'checkboxes',
    '#options' => user_roles(0, 'create assets'),
    '#value' => $parent->roles,
  );
  $form['preview'] = array(
    '#type' => 'hidden',
    '#value' => $preview,
  );
  return $form;
}

/**
 * Validate callback for asset_wizard_form().
 */
function asset_wizard_form_validate($form, &$form_state) {

  // If the user presses 'cancel' or 'back', we should do no further
  // validation. Also, if they press 'cancel' we should actually
  // goto the finish page, because the 'submit' stage won't be called
  // if the user hasn't filled in one of the mandatory fields. In fact,
  // in that case, Drupal's built in form validation will have set
  // errors that we don't need to show the user.
  if ($form_state['values']['op'] == t(ASSET_WIZARD_CANCEL)) {

    // Clear errors from Drupal's built in validation.
    drupal_get_messages('error');

    // Now go to the 'finish page'
    drupal_goto(ASSET_WIZARD_FINISH_REDIRECT);
    return;
  }
  elseif ($form_state['values']['op'] == t(ASSET_WIZARD_DELETE)) {
    if ($form_state['values']['aid'] == "") {
      form_set_error('aid', 'You need to select an asset to delete.');
    }
    elseif ($form_state['clicked_button']['#post']['deleteme'] == '1') {
      $asset = asset_load(array(
        'aid' => $form_state['values']['aid'],
      ));
      @unlink($asset->filepath);
      db_query('DELETE FROM {asset} WHERE aid=%d LIMIT 1', $form_state['values']['aid']);
      db_query('DELETE FROM {asset_node} WHERE aid=%d', $form_state['values']['aid']);
      drupal_set_message(t('The selected asset has been deleted.'));
    }
  }
  if ($form_state['clicked_button']['#post']['op'] == 'Edit') {
    if (empty($form_state['values']['aid'])) {
      form_set_error('aid', 'You need to select an asset to edit.');
    }
  }
  elseif ($form_state['values']['op'] == t('Select') && isset($_SESSION['asset_fieldname'])) {
    $delta = split("-", $_SESSION['asset_fieldname']);
    $delta_count = substr_count($_SESSION['asset_fieldname'], "-");
    $delta_count--;
    $delta = $delta[$delta_count];
    $fieldname = str_replace(array(
      "edit-field-",
      "-{$delta}-",
      "-",
    ), array(
      "",
      "",
      "_",
    ), $_SESSION['asset_fieldname']);
    if (!$form_state['values']['aid']) {
      form_set_error('aid', 'You need to select an asset before inserting it.');
      return;
    }

    // An asset is selected straight from step 1 to insert directly into CCK
    // Create the preview code for the CCK field
    $is_image = array(
      'jpg',
      'jpeg',
      'png',
      'gif',
      'tif',
      'tiff',
      'bmp',
    );
    $a = asset_load(array(
      'aid' => $form_state['values']['aid'],
    ));

    // Preview the image
    if (in_array($a->extension, $is_image)) {
      if (variable_get('asset_imagecache', 0)) {
        $presets = imagecache_presets();
        $preset = $presets[variable_get('asset_imagecache', 0)]['presetname'];
        $preview = theme('imagecache', $preset, str_replace("//", "/", $a->filepath));
      }
      else {
        $asset = array(
          'aid' => $form_state['values']['aid'],
          'format' => 'image',
          'formatter' => 'asset',
          'width' => '120',
          'height' => '80',
        );
        $preview = asset_render_macro($asset);
      }
    }
    else {

      // $preview = asset_preview(['aid']); // This doens't work: inserting javascript code with javascript
      $preview = "Media placeholder";
    }
    $fieldname = "field_" . $fieldname;
    print '<script>
			window.opener.document.getElementById("' . $_SESSION['asset_fieldname'] . 'value").value = "' . $a->filename . '";
			window.opener.document.getElementById("' . $_SESSION['asset_fieldname'] . 'aid").value = "' . $form_state['values']['aid'] . '";
			window.opener.document.getElementById("preview_' . $fieldname . '_' . $delta . '").innerHTML = "' . str_replace("\"", "'", $preview) . '";
			window.opener.document.getElementById("' . $_SESSION['asset_fieldname'] . 'caption").value = "' . $a->title . '";
			window.opener.document.getElementById("' . $_SESSION['asset_fieldname'] . 'copyright").value = "' . $a->author . '";
			window.close();
			</script>';

    // Let's just execute this
    exit;
  }

  // Do whatever validation here. It's probably a good idea to do a
  // switch/case on the wizard step. It may be a good idea to validate
  // everything on each call, as that will catch anyone hacking the
  // form with directly injected form posts, although at slightly
  // more processing.
  if ($form_state['clicked_button']['#post']['op'] == "Next") {
    if (isset($form_state['clicked_button']['#post']['delete_confirm'])) {

      // First we delete all assets from this directory
      db_query("DELETE FROM {asset} WHERE type='local' AND dirname='%s'", $form_state['clicked_button']['#post']['dir']);

      // Then we delete the directory itself
      $path = pathinfo($form_state['clicked_button']['#post']['dir']);
      db_query("DELETE FROM {asset} WHERE type='directory' AND filename='%s' LIMIT 1", $path['basename']);
      asset_rmdir(file_directory_path() . '/' . $form_state['clicked_button']['#post']['dir']);

      // We're all done
      unset($_SESSION['messages']);
      drupal_set_message("The directory \"" . $path['basename'] . "\" and its content have been removed");
      drupal_goto(filter_xss($_GET['q']), 'dir=');
    }
  }
  if ($form_state['buttons']['submit'][0]['#post']['op'] == "Finish" || $form_state['values']['op'] == "Next") {
    if (isset($form_state['buttons']['submit'][0]['#post']['edit-asset'])) {
      db_query('DELETE FROM {asset_role} WHERE aid=%d', $form_state['buttons']['submit'][0]['#post']['aid']);
      if (!empty($form_state['buttons']['submit'][0]['#post']['roles'])) {
        foreach ($form_state['buttons']['submit'][0]['#post']['roles'] as $role => $access) {
          db_query('INSERT INTO {asset_role} (aid, rid, status) VALUES (%d, %d, %d)', array(
            $form_state['buttons']['submit'][0]['#post']['aid'],
            $role,
            $access,
          ));
        }
      }
      if (!isset($form_state['buttons']['submit'][0]['#post']['filename'])) {
        $form_state['buttons']['submit'][0]['#post']['filename'] = $form_state['buttons']['submit'][0]['#post']['old-filename'];
      }
      $newdir = 0;
      if ($form_state['buttons']['submit'][0]['#post']['old-parent'] != $form_state['buttons']['submit'][0]['#post']['parent']) {
        $newdir = 1;
      }
      if ($form_state['buttons']['submit'][0]['#post']['old-filename'] != $form_state['buttons']['submit'][0]['#post']['filename']) {
        $newdir = 1;
      }
      if ($newdir) {
        empty($form_state['buttons']['submit'][0]['#post']['parent']) ? $dir = "" : ($dir = $form_state['buttons']['submit'][0]['#post']['parent'] . "/");
        empty($form_state['buttons']['submit'][0]['#post']['old-parent']) ? $olddir = "" : ($olddir = $form_state['buttons']['submit'][0]['#post']['old-parent'] . "/");
        if (rename(file_directory_path() . '/' . $olddir . $form_state['buttons']['submit'][0]['#post']['old-filename'], file_directory_path() . '/' . $dir . $form_state['buttons']['submit'][0]['#post']['filename'])) {
          db_query("UPDATE {asset} SET dirname='%s' WHERE aid=%d LIMIT 1", $form_state['buttons']['submit'][0]['#post']['parent'], $form_state['buttons']['submit'][0]['#post']['aid']);
          db_query("UPDATE {asset} SET filename='%s', title='%s', author='%s', status=%d, description='%s' WHERE aid=%d LIMIT 1", $form_state['buttons']['submit'][0]['#post']['filename'], $form_state['buttons']['submit'][0]['#post']['title'], $form_state['buttons']['submit'][0]['#post']['author'], $form_state['buttons']['submit'][0]['#post']['status'], $form_state['buttons']['submit'][0]['#post']['description'], $form_state['buttons']['submit'][0]['#post']['aid']);
          drupal_set_message(t('Your changes have been saved.'));
          drupal_goto($_GET['q'], 'dir=' . $form_state['buttons']['submit'][0]['#post']['parent'] . '&noreset=1');
          break;
        }
        else {
          drupal_set_message(t('There was an error copying the file to the new directory.'), 'error');
        }
      }
      else {
        db_query("UPDATE {asset} SET filename='%s', title='%s', author='%s', status=%d, description='%s' WHERE aid=%d LIMIT 1", $form_state['buttons']['submit'][0]['#post']['filename'], $form_state['buttons']['submit'][0]['#post']['title'], $form_state['buttons']['submit'][0]['#post']['author'], $form_state['buttons']['submit'][0]['#post']['status'], $form_state['buttons']['submit'][0]['#post']['description'], $form_state['buttons']['submit'][0]['#post']['aid']);
        drupal_set_message(t('Your changes have been saved.'));
      }

      //	break;
    }
    if ($form_state['values']['step'] == 1 && isset($form_state['values']['module'])) {

      // allow validate to return an aid
      $retval = module_invoke($form_state['values']['module'], 'asset_type', 'validate', $form_state['values']['delta'], $form_state['values']);
      if (is_numeric($retval)) {
        $_POST['aid'] = $retval;
        $form_state['values']['aid'] = $retval;
      }
    }
    if ($form_state['values']['step'] == 1 && !isset($_GET['op']) && !$form_state['values']['aid']) {
      form_set_error('aid', t('Please select a file.'));
    }
    if ($form_state['values']['step'] == 2 && !$form_state['values']['formatter']) {
      form_set_error('formatter', t('Please select a formatter.'));
    }

    //		break;
  }
}

/**
 * Submit callback for asset_wizard_form().
 */
function asset_wizard_form_submit($form, &$form_state) {
  if ($form_state['values']['delta'] == "directory") {
    if (!$form_state['values']['title']) {
      form_set_error('folder', t('You must specify a folder name.'));
    }
    elseif (preg_match('/[^A-Za-z0-9-_.]/', $form_state['values']['title'])) {
      form_set_error('title', t('The folder name may only contain alpha-numeric characters and dashes(-), underscores(_) and periods(.).'));
    }
    else {
      $dir = file_create_path($form_state['values']['parent'] . '/' . $form_state['values']['title']);
      if (!asset_check_directory($dir, FILE_CREATE_DIRECTORY, 'folder', $form_state['values'])) {
        drupal_set_message(t('Error creating %dir.', array(
          '%dir' => $dir,
        )));
      }
    }
    return FALSE;
  }
  if ($form_state['values']['delta'] == "upload") {
    if ($file = file_save_upload('upload')) {
      $parent_tmp = $form_state['values']['parent'] ? $form_state['values']['parent'] . '/' : $form_state['values']['parent'];
      $path = file_create_path($parent_tmp . $file->filename);
      if (file_copy($file, $path, FILE_EXISTS_RENAME)) {
        $asset = asset_save($file, $form_state['values']);
        drupal_set_message(t("The file {$file->filename} has been successfully uploaded."));
        if (isset($_SESSION['asset_fieldname'])) {
          drupal_goto(filter_xss($_GET['q']), 'dir=' . filter_xss($_GET['dir']));
        }
        else {
          return $asset->aid;
        }
      }
      else {
        form_set_error('upload', 'Error saving file to <em>' . $path . '</em>');
      }
    }
    else {
      form_set_error('upload', 'Error uploading file</em>');
    }
  }
  if ($form_state['values']['step'] == 1 && isset($form_state['values']['module'])) {

    // allow module submits to return an aid
    $retval = module_invoke($form_state['values']['module'], 'asset_type', 'submit', $form_state['values']['delta'], $form_state['values']);
    if (is_numeric($retval)) {
      $_POST['aid'] = $retval;
    }
    return FALSE;
  }

  // If we haven't processed the form and completed fully, we have
  // to return FALSE so that Drupal redisplays our form.
  return FALSE;
}
function asset_wizard_directory_options($dir = '') {
  global $user;

  // build directory list and filename options array
  $sql = 'SELECT DISTINCT(a.aid),a.dirname FROM {asset} a ';
  $args = array();

  // for everyone but users with 'administer assets' access control,
  // only get assets with proper permissions.
  if (user_access('administer assets')) {
    $sql .= 'WHERE a.dirname LIKE \'%s%\' ';
    $args = array(
      $dir,
    );
  }
  else {
    $sql .= 'LEFT JOIN {asset_role} r ON a.aid=r.aid ' . 'WHERE (a.uid = %d ' . 'OR a.status = 1 ' . 'OR (r.rid IN (%s) AND r.status = 1) ) ' . 'AND a.dirname LIKE \'%s%\' ';
    $args = array(
      $user->uid,
      join(array_keys($user->roles), ','),
      $dir,
    );

    // $sql .= 'WHERE a.dirname="%s" ';
    // $args = array($dir);
  }
  $sql .= ' AND a.type = \'directory\' ORDER BY a.dirname ASC';
  $result = db_query($sql, $args);
  $options = array();
  while ($asset = db_fetch_object($result)) {
    $asset = asset_load($asset->aid);
    $dir = $asset->dirname . ($asset->dirname ? '/' : '') . $asset->filename;
    $parts = explode('/', $dir);
    if (count($parts)) {
      $name = str_repeat('--', count($parts)) . ' ' . $asset->title;
    }
    else {
      $name = $asset->title;
    }
    $options[$dir] = $name;
  }
  if (user_access('administer assets')) {
    $options[''] = 'assets';
  }
  ksort($options);
  return $options;
}
function asset_wizard_location_bar($dir = '') {
  global $user;
  $defaults = array_unique(array(
    $dir,
    'PUBLIC',
    $user->name,
  ));
  $qstr = $_GET;
  unset($qstr['q']);
  foreach ($defaults as $path) {
    $info = asset_pathinfo($path);
    $asset = asset_load(array(
      'dirname' => $info['dirname'],
      'filename' => $info['filename'],
    ));
    $qstr['dir'] = $asset->filepath;
    $links[] = l($asset->title, $_GET['q'], array(
      'query' => asset_build_query($query),
    ));
  }
  return theme('item_list', $links);
}

/**
 * Build a list of available asset_types that can be used.
 */
function asset_wizard_toolbar($dir = '') {
  $qarray = $_GET;
  $qarray['dir'] = $dir;
  $buttons = array();

  // Create Choose button
  $choose = t('Choose');
  $html = theme('image', drupal_get_path('module', 'asset') . '/misc/icon.png', $choose, $choose, NULL, FALSE) . '<br/>' . $choose;
  $qstring = drupal_query_string_encode($qarray, array(
    'q',
    'aid',
    'op',
  ));
  $buttons[] = l($html, 'asset/wizard/' . arg(2), array(
    'query' => $qstring,
    'html' => true,
  ));

  // Create other buttons
  foreach (module_implements('asset_type') as $module) {
    $types = module_invoke($module, 'asset_type', 'info');
    foreach ($types as $delta => $type) {
      if (user_access('create ' . $delta . ' assets') || user_access('administer assets')) {
        if ($type['src']) {
          $html = theme('image', $type['src'], $type['value'], $type['value'], NULL, FALSE) . '<br/>' . $type['value'];
        }
        else {
          $html = $type['value'];
        }
        $qarray['op'] = $type['value'];
        $qstring = drupal_query_string_encode($qarray, array(
          'q',
          'aid',
        ));
        $buttons[] = l($html, 'asset/wizard/' . arg(2), array(
          'query' => $qstring,
          'html' => true,
        ));
      }
    }

    // add class to last button from each module
    $i = count($buttons) - 1;
    if (!is_array($buttons[$i])) {
      $buttons[$i] = array(
        'data' => $buttons[$i],
        'class' => 'last',
      );
    }
  }
  return theme('item_list', $buttons);
}

/**
 * Script tag to add to content to finish the wizard.
 */
function asset_wizard_finish() {
  return '<script type="text/javascript">$(insertToEditor);</script>';
}
function asset_rmdir($folder) {
  if (is_dir($folder)) {
    foreach (scandir($folder) as $value) {
      if ($value != "." && $value != "..") {
        $value = $folder . "/" . $value;
        if (is_dir($value)) {
          asset_rmdir($value);
        }
        elseif (is_file($value)) {
          @unlink($value);
        }
      }
    }
    return rmdir($folder);
  }
  else {
    return FALSE;
  }
}

Functions

Name	Description
asset_rmdir
asset_wizard_default_fields	This is the base form for asset types.
asset_wizard_directory_options
asset_wizard_finish	Script tag to add to content to finish the wizard.
asset_wizard_form	Main form builder function for the asset wizard.
asset_wizard_form_asset_selection	Form builder for step 1 of the asset wizard. This step is the most intensive so it has been separated out for clarity.
asset_wizard_form_submit	Submit callback for asset_wizard_form().
asset_wizard_form_validate	Validate callback for asset_wizard_form().
asset_wizard_location_bar
asset_wizard_toolbar	Build a list of available asset_types that can be used.

Constants

Name	Description
ASSET_THUMBNAIL
ASSET_WIZARD_CANCEL
ASSET_WIZARD_DELETE
ASSET_WIZARD_FINAL_STEP
ASSET_WIZARD_FINISH_REDIRECT
ASSET_WIZARD_NEXT
ASSET_WIZARD_PREVIOUS
ASSET_WIZARD_SELECT