background_video.install in Background Video 7

This file provides the uninstall function.

File

background_video.install

<?php

/**
 * @file
 * This file provides the uninstall function.
 */

/**
 * Implements hook_uninstall().
 * This function delete Background Video Directory and all videos from it.
 * It also deletes all the system variables of this module.
 */
function background_video_uninstall() {

  // Remove the background_video directory and uploaded files.
  file_unmanaged_delete_recursive(file_default_scheme() . '://background_video');
  $result = db_query("SELECT fid FROM {file_usage} WHERE module = 'background_video'");

  // Remove all data used files.
  foreach ($result as $record) {
    $file = file_load($record->fid);
    if ($file) {

      // Remove all usage for this file by my_module_name.
      file_usage_delete($file, 'background_video', 'background_video', NULL, 0);

      // Should only delete if file not in use by another module.
      file_delete($file);
    }
  }
  variable_del('background_video');
  variable_del('background_video_source_mp4');
  variable_del('background_video_source_ogv');
  variable_del('background_video_source_webm');
  variable_del('background_video_id');
  variable_del('background_video_control_position');
  variable_del('background_video_source_poster');
  variable_del('background_video_loop');
  variable_del('background_video_autoplay');
}

/**
 * Implements hook_requirements().
 * This function check that the third party library Jquery-VideoBackground is
 * available or not.
 */
function background_video_requirements($phase) {
  $requirements = array();
  $t = get_t();
  if ($phase == 'runtime') {
    if (function_exists('libraries_detect')) {
      $info = libraries_detect('jquery-videobackground');
      if ($info['installed'] == FALSE) {
        $requirements['jquery-videobackground'] = array(
          'title' => t('jQuery VideoBackground'),
          'severity' => REQUIREMENT_ERROR,
          'value' => t('jquery-videobackground library not installed. Download it from <a href="@source-url" target="_blank">the official page</a>. This module expects the library to be at sites/all/libraries/jquery-videobackground/script/jquery.videobackground.js , along with other .js files.', array(
            '@source-url' => 'https://github.com/georgepaterson/jquery-videobackground',
          )),
        );
      }
      else {
        $requirements['jquery-videobackground'] = array(
          'title' => t('jQuery VideoBackground'),
          'severity' => REQUIREMENT_OK,
          'value' => t('jquery-videobackground library installed. <strong>Version detected: @version</strong>.', array(
            '@version' => $info['version'],
          )),
        );
      }
    }
  }
  return $requirements;
}

Functions

Name	Description
background_video_requirements	Implements hook_requirements(). This function check that the third party library Jquery-VideoBackground is available or not.
background_video_uninstall	Implements hook_uninstall(). This function delete Background Video Directory and all videos from it. It also deletes all the system variables of this module.