Method uninstall

/**
 * Generic update method for extensions
 *
 * @param   integer  $id  The extension ID
 *
 * @return  boolean  True on success
 *
 * @since   4.0.0
 */
public function uninstall($id)
{
    if (!$this->extension->load((int) $id)) {
        Log::add(Text::_('JLIB_INSTALLER_ERROR_UNKNOWN_EXTENSION'), Log::WARNING, 'jerror');
        return false;
    }
    // Joomla 4: Locked extensions cannot be removed.
    if (isset($this->extension->locked) && $this->extension->locked) {
        Log::add(Text::_('JLIB_INSTALLER_ERROR_UNINSTALL_LOCKED_EXTENSION'), Log::WARNING, 'jerror');
        return false;
    } elseif (!isset($this->extension->locked) && $this->extension->protected) {
        Log::add(Text::_('JLIB_INSTALLER_ERROR_UNINSTALL_PROTECTED_EXTENSION'), Log::WARNING, 'jerror');
        return false;
    }
    /*
     * Does this extension have a parent package?
     * If so, check if the package disallows individual extensions being uninstalled if the package is not being uninstalled
     */
    if ($this->extension->package_id && !$this->parent->isPackageUninstall() && !$this->canUninstallPackageChild($this->extension->package_id)) {
        Log::add(Text::sprintf('JLIB_INSTALLER_ERROR_CANNOT_UNINSTALL_CHILD_OF_PACKAGE', $this->extension->name), Log::WARNING, 'jerror');
        return false;
    }
    // Setup the uninstall job as required
    try {
        $this->setupUninstall();
    } catch (\RuntimeException $e) {
        Log::add($e->getMessage(), Log::WARNING, 'jerror');
        return false;
    }
    // Set the extension's name and element
    $this->name = $this->getName();
    $this->element = $this->getElement();
    /*
     * ---------------------------------------------------------------------------------------------
     * Installer Trigger Loading and Uninstall
     * ---------------------------------------------------------------------------------------------
     */
    $this->setupScriptfile();
    try {
        $this->triggerManifestScript('preflight');
    } catch (\RuntimeException $e) {
        Log::add($e->getMessage(), Log::WARNING, 'jerror');
        return false;
    }
    try {
        $this->triggerManifestScript('uninstall');
    } catch (\RuntimeException $e) {
        // Ignore errors for now
    }
    // Tasks from here may fail but we will still attempt to finish the uninstall process
    $retval = true;
    /*
     * ---------------------------------------------------------------------------------------------
     * Database Processing Section
     * ---------------------------------------------------------------------------------------------
     */
    try {
        $this->parseQueries();
    } catch (\RuntimeException $e) {
        Log::add($e->getMessage(), Log::WARNING, 'jerror');
        $retval = false;
    }
    /*
     * ---------------------------------------------------------------------------------------------
     * Filesystem Processing Section
     * ---------------------------------------------------------------------------------------------
     */
    try {
        $this->removeExtensionFiles();
    } catch (\RuntimeException $e) {
        Log::add($e->getMessage(), Log::WARNING, 'jerror');
        $retval = false;
    }
    /*
     * ---------------------------------------------------------------------------------------------
     * Finalization and Cleanup Section
     * ---------------------------------------------------------------------------------------------
     */
    try {
        $retval |= $this->finaliseUninstall();
    } catch (\RuntimeException $e) {
        Log::add($e->getMessage(), Log::WARNING, 'jerror');
        $retval = false;
    }
    // And now we run the postflight
    try {
        $this->triggerManifestScript('postflight');
    } catch (\RuntimeException $e) {
        Log::add($e->getMessage(), Log::WARNING, 'jerror');
        $retval = false;
    }
    return $retval;
}