'http://easydigitaldownloads.com',
'request_data' => array(),
'theme_slug' => get_template(), // use get_stylesheet() for child theme updates
'item_name' => '',
'license' => '',
'version' => '',
'author' => '',
'beta' => false,
);
$args = wp_parse_args( $args, $defaults );
$this->license = $args['license'];
$this->item_name = $args['item_name'];
$this->version = $args['version'];
$this->theme_slug = sanitize_key( $args['theme_slug'] );
$this->author = $args['author'];
$this->beta = $args['beta'];
$this->remote_api_url = $args['remote_api_url'];
$this->response_key = $this->theme_slug . '-' . $this->beta . '-update-response';
$this->strings = $strings;
add_filter( 'site_transient_update_themes', array( $this, 'theme_update_transient' ) );
add_filter( 'delete_site_transient_update_themes', array( $this, 'delete_theme_update_transient' ) );
add_action( 'load-update-core.php', array( $this, 'delete_theme_update_transient' ) );
add_action( 'load-themes.php', array( $this, 'delete_theme_update_transient' ) );
add_action( 'load-themes.php', array( $this, 'load_themes_screen' ) );
}
/**
* Show the update notification when neecessary
*
* @return void
*/
function load_themes_screen() {
add_thickbox();
add_action( 'admin_notices', array( $this, 'update_nag' ) );
}
/**
* Display the update notifications
*
* @return void
*/
function update_nag() {
$strings = $this->strings;
$theme = wp_get_theme( $this->theme_slug );
$api_response = get_transient( $this->response_key );
if ( false === $api_response ) {
return;
}
$update_url = wp_nonce_url( 'update.php?action=upgrade-theme&theme=' . urlencode( $this->theme_slug ), 'upgrade-theme_' . $this->theme_slug );
$update_onclick = ' onclick="if ( confirm(\'' . esc_js( $strings['update-notice'] ) . '\') ) {return true;}return false;"';
if ( version_compare( $this->version, $api_response->new_version, '<' ) ) {
echo '';
printf(
$strings['update-available'],
$theme->get( 'Name' ),
$api_response->new_version,
'#TB_inline?width=640&inlineId=' . $this->theme_slug . '_changelog',
$theme->get( 'Name' ),
$update_url,
$update_onclick
);
echo '
';
echo '';
echo wpautop( $api_response->sections['changelog'] );
echo '
';
}
}
/**
* Update the theme update transient with the response from the version check
*
* @param array $value The default update values.
* @return array|boolean If an update is available, returns the update parameters, if no update is needed returns false, if
* the request fails returns false.
*/
function theme_update_transient( $value ) {
$update_data = $this->check_for_update();
if ( $update_data ) {
// Make sure the theme property is set. See issue 1463 on Github in the Software Licensing Repo.
$update_data['theme'] = $this->theme_slug;
$value->response[ $this->theme_slug ] = $update_data;
}
return $value;
}
/**
* Remove the update data for the theme
*
* @return void
*/
function delete_theme_update_transient() {
delete_transient( $this->response_key );
}
/**
* Call the EDD SL API (using the URL in the construct) to get the latest version information
*
* @return array|boolean If an update is available, returns the update parameters, if no update is needed returns false, if
* the request fails returns false.
*/
function check_for_update() {
$update_data = get_transient( $this->response_key );
if ( false === $update_data ) {
$failed = false;
$api_params = array(
'edd_action' => 'get_version',
'license' => $this->license,
'name' => $this->item_name,
'slug' => $this->theme_slug,
'version' => $this->version,
'author' => $this->author,
'beta' => $this->beta
);
$response = wp_remote_post( $this->remote_api_url, array( 'timeout' => 15, 'body' => $api_params ) );
// Make sure the response was successful
if ( is_wp_error( $response ) || 200 != wp_remote_retrieve_response_code( $response ) ) {
$failed = true;
}
$update_data = json_decode( wp_remote_retrieve_body( $response ) );
if ( ! is_object( $update_data ) ) {
$failed = true;
}
// If the response failed, try again in 30 minutes
if ( $failed ) {
$data = new stdClass;
$data->new_version = $this->version;
set_transient( $this->response_key, $data, strtotime( '+30 minutes', time() ) );
return false;
}
// If the status is 'ok', return the update arguments
if ( ! $failed ) {
$update_data->sections = maybe_unserialize( $update_data->sections );
set_transient( $this->response_key, $update_data, strtotime( '+12 hours', time() ) );
}
}
if ( version_compare( $this->version, $update_data->new_version, '>=' ) ) {
return false;
}
return (array) $update_data;
}
}