Struct ExtensionManager 

pub struct ExtensionManager(HashMap<&'static str, CheckState>);

Helper for implementing RequestConnection::extension_information().

This helps with implementing RequestConnection. Most likely, you do not need this in your own code, unless you really want to implement your own X11 connection.

Tuple Fields

0: HashMap<&'static str, CheckState>

Implementations

impl ExtensionManager

fn prefetch_extension_information_aux<C: RequestConnection>( &mut self, conn: &C, extension_name: &'static str, ) -> Result<&mut CheckState, ConnectionError>

If the extension has not prefetched yet, sends a QueryExtension requests, adds a field to the hash map and returns a reference to it.

pub fn prefetch_extension_information<C: RequestConnection>( &mut self, conn: &C, extension_name: &'static str, ) -> Result<(), ConnectionError>

Prefetchs an extension sending a QueryExtension without waiting for the reply.

pub fn insert_extension_information( &mut self, extension_name: &'static str, info: Option<ExtensionInformation>, )

Insert an extension if you already have the information.

pub fn extension_information<C: RequestConnection>( &mut self, conn: &C, extension_name: &'static str, ) -> Result<Option<ExtensionInformation>, ConnectionError>

An implementation of RequestConnection::extension_information().

The given connection is used for sending a QueryExtension request if needed.

Trait Implementations

impl Debug for ExtensionManager

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ExtensionManager

fn default() -> ExtensionManager

Returns the “default value” for a type.

impl ExtInfoProvider for ExtensionManager

fn get_from_major_opcode( &self, major_opcode: u8, ) -> Option<(&str, ExtensionInformation)>

Returns the information of the extension that whose opcode is major_opcode.

fn get_from_event_code( &self, event_code: u8, ) -> Option<(&str, ExtensionInformation)>

Returns the information of the extension that whose event number range includes event_number.

fn get_from_error_code( &self, error_code: u8, ) -> Option<(&str, ExtensionInformation)>

Returns the information of the extension that whose error number range includes error_number.