This is the reblocks-websocket Reference Manual, version 0.4.0, generated automatically by Declt version 4.0 beta 2 "William Riker" on Sun Sep 15 06:35:11 2024 GMT+0.
The main system appears first, followed by any subsystem dependency.
reblocks-websocketReblocks extension allowing to add a bidirectional communication via Websocket between a backend and Reblocks widgets.
Alexander Artemenko <svetlyak.40wt@gmail.com>
(GIT https://github.com/40ants/reblocks-websocket)
Unlicense
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# reblocks-websocket - Reblocks extension adding a bidirectional communication via Websocket.
<a id="reblocks-websocket-asdf-system-details"></a>
## REBLOCKS-WEBSOCKET ASDF System Details
* Version: 0.4.0
* Description: Reblocks extension allowing to add a bidirectional communication via Websocket between a backend and Reblocks widgets.
* Licence: Unlicense
* Author: Alexander Artemenko <svetlyak.40wt@gmail.com>
* Homepage: [https://40ants.com/reblocks-websocket/][6f15]
* Bug tracker: [https://github.com/40ants/reblocks-websocket/issues][e6f2]
* Source control: [GIT][b1a1]
* Depends on: [alexandria][8236], [bordeaux-threads][3dbf], [jonathan][6dd8], [log4cl-extras][691c], [parenscript][7921], [reblocks][184b], [reblocks-parenscript][c07c], [serapeum][c41d], [websocket-driver][4f50]
[][0497]
This module allows you to push some information from backend to frontend
and. In this case, updates of widgets’s state on the client are
initiated by server. For example, you can have some sort of long running
process on the server and need to show it’s status to the user.
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## Installation
This library depends on Reblocks (Weblocks fork) and a websocket-driver.
If you will use Woo server then probably you’ll need this fork of the websocket-driver
([make-woo-work-from-separate-threads][ef5d] branch).
However, may be the recent version of websocket-driver will work just find, I don’t know.
You can install this library from Quicklisp, but you want to receive updates quickly, then install it from Ultralisp.org:
“‘
(ql-dist:install-dist "http://dist.ultralisp.org/"
:prompt nil)
(ql:quickload :reblocks-websocket)
“‘
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## Usage
Define you widget and inherit it from the
[‘reblocks-websocket:websocket-widget‘][c36a]:
“‘lisp
(reblocks:defwidget counter-box (reblocks-websocket:websocket-widget)
((counter :initform 0
:accessor counter)))
“‘
Define a code which will start some sort of background activity. In this
example we are doing it right when widget was created in the beginning
of the user session, but of cause, you can do it as a reaction on an
action.
“‘lisp
(defmethod initialize-instance ((instance counter-box) &rest restargs)
(declare (ignorable restargs))
(call-next-method)
(reblocks-websocket:in-thread ("Update counter")
(sleep 3)
;; Updating counter
(incf (counter instance))
(reblocks:update instance)))
“‘
That is it. Define a render method as usual and use the widget on the
page. Counter will be updated automatically. This works like a magic,
a framework makes all dirty work under the hood.
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## API
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### REBLOCKS-WEBSOCKET
<a id="x-28-23A-28-2818-29-20BASE-CHAR-20-2E-20-22REBLOCKS-WEBSOCKET-22-29-20PACKAGE-29"></a>
#### [package](61dd) ‘reblocks-websocket‘
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#### Classes
<a id="x-28REBLOCKS-WEBSOCKET-DOCS-2FINDEX-3A-3A-40REBLOCKS-WEBSOCKET-24NO-ACTIVE-WEBSOCKETS-3FCLASS-2040ANTS-DOC-2FLOCATIVES-3ASECTION-29"></a>
##### NO-ACTIVE-WEBSOCKETS
<a id="x-28REBLOCKS-WEBSOCKET-3ANO-ACTIVE-WEBSOCKETS-20CONDITION-29"></a>
###### [condition](e294) ‘reblocks-websocket:no-active-websockets‘ (error)
<a id="x-28REBLOCKS-WEBSOCKET-DOCS-2FINDEX-3A-3A-40REBLOCKS-WEBSOCKET-24WEBSOCKET-WIDGET-3FCLASS-2040ANTS-DOC-2FLOCATIVES-3ASECTION-29"></a>
##### WEBSOCKET-WIDGET
<a id="x-28REBLOCKS-WEBSOCKET-3AWEBSOCKET-WIDGET-20CLASS-29"></a>
###### [class](2ecb) ‘reblocks-websocket:websocket-widget‘ (widget)
<a id="x-28REBLOCKS-WEBSOCKET-DOCS-2FINDEX-3A-3A-7C-40REBLOCKS-WEBSOCKET-3FFunctions-SECTION-7C-2040ANTS-DOC-2FLOCATIVES-3ASECTION-29"></a>
#### Functions
<a id="x-28REBLOCKS-WEBSOCKET-3ASEND-COMMAND-20FUNCTION-29"></a>
##### [function](bcc1) ‘reblocks-websocket:send-command‘ method-name &rest args
<a id="x-28REBLOCKS-WEBSOCKET-3ASEND-SCRIPT-20FUNCTION-29"></a>
##### [function](d993) ‘reblocks-websocket:send-script‘ script
Sends ‘JS‘ script to frontend via Websocket.
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#### Macros
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##### [macro](b6b7) ‘reblocks-websocket:in-thread‘ (thread-name) &body body
Starts given piece of code in named thread, ensiring that reblocks/session::*session* and
reblocks/request:*request* will be bound during it’s execution.
Also, it set reblocks.websocket:*backround* to true, to make ‘update’ method distinguish
between usual request processing and background activity.
<a id="x-28REBLOCKS-WEBSOCKET-DOCS-2FINDEX-3A-3A-7C-40REBLOCKS-WEBSOCKET-3FVariables-SECTION-7C-2040ANTS-DOC-2FLOCATIVES-3ASECTION-29"></a>
#### Variables
<a id="x-28REBLOCKS-WEBSOCKET-3A-2ABACKGROUND-2A-20-28VARIABLE-29-29"></a>
##### [variable](4955) ‘reblocks-websocket:*background*‘ nil
This variable becomes t during background processing.
[6f15]: https://40ants.com/reblocks-websocket/
[c36a]: https://40ants.com/reblocks-websocket/#x-28REBLOCKS-WEBSOCKET-3AWEBSOCKET-WIDGET-20CLASS-29
[b1a1]: https://github.com/40ants/reblocks-websocket
[0497]: https://github.com/40ants/reblocks-websocket/actions
[61dd]: https://github.com/40ants/reblocks-websocket/blob/a8d48fc6f4785e080a3cb46f59cd684eb911cd9c/src/websocket.lisp#L1
[2ecb]: https://github.com/40ants/reblocks-websocket/blob/a8d48fc6f4785e080a3cb46f59cd684eb911cd9c/src/websocket.lisp#L227
[4955]: https://github.com/40ants/reblocks-websocket/blob/a8d48fc6f4785e080a3cb46f59cd684eb911cd9c/src/websocket.lisp#L388
[e294]: https://github.com/40ants/reblocks-websocket/blob/a8d48fc6f4785e080a3cb46f59cd684eb911cd9c/src/websocket.lisp#L392
[d993]: https://github.com/40ants/reblocks-websocket/blob/a8d48fc6f4785e080a3cb46f59cd684eb911cd9c/src/websocket.lisp#L427
[bcc1]: https://github.com/40ants/reblocks-websocket/blob/a8d48fc6f4785e080a3cb46f59cd684eb911cd9c/src/websocket.lisp#L447
[b6b7]: https://github.com/40ants/reblocks-websocket/blob/a8d48fc6f4785e080a3cb46f59cd684eb911cd9c/src/websocket.lisp#L519
[e6f2]: https://github.com/40ants/reblocks-websocket/issues
[ef5d]: https://github.com/svetlyak40wt/websocket-driver/tree/make-woo-work-from-separate-threads
[8236]: https://quickdocs.org/alexandria
[3dbf]: https://quickdocs.org/bordeaux-threads
[6dd8]: https://quickdocs.org/jonathan
[691c]: https://quickdocs.org/log4cl-extras
[7921]: https://quickdocs.org/parenscript
[184b]: https://quickdocs.org/reblocks
[c07c]: https://quickdocs.org/reblocks-parenscript
[c41d]: https://quickdocs.org/serapeum
[4f50]: https://quickdocs.org/websocket-driver
* * *
###### [generated by [40ANTS-DOC](https://40ants.com/doc/)]
0.4.0
40ants-asdf-system (system).
reblocks-websocket/websocket (system).
reblocks-websocket/websocketAlexander Artemenko <svetlyak.40wt@gmail.com>
(GIT https://github.com/40ants/reblocks-websocket)
Unlicense
reblocks-parenscript (system).
websocket-driver (system).
reblocks/hooks (system).
parenscript (system).
alexandria (system).
jonathan (system).
reblocks/page (system).
reblocks/page-dependencies (system).
reblocks/html (system).
reblocks/widgets/dom (system).
log4cl-extras/error (system).
serapeum (system).
reblocks/variables (system).
reblocks/response (system).
bordeaux-threads (system).
Files are sorted by type and then listed depth-first from the systems components trees.
reblocks-websocket/reblocks-websocket.asdreblocks-websocket (system).
reblocks-websocket/websocket/file-type.lispreblocks-websocket/websocket (system).
*background* (special variable).
get-dependencies (method).
in-thread (macro).
initialize-instance (method).
no-active-websockets (condition).
render (method).
send-command (function).
send-script (function).
serve (method).
update (method).
websocket-widget (class).
%call-with-lock (function).
%send (function).
%set-current-page-websockets (function).
%with-lock (macro).
*js-dependency* (special variable).
*route-created* (special variable).
*uri* (special variable).
*websockets* (special variable).
+ws-closed-states+ (constant).
add-page-websocket (function).
current-page-websockets (function).
in-thread-loop (macro).
make-websocket-client-code (function).
make-websocket-route (function).
on-close (function).
on-message (function).
on-open (function).
process-websocket (function).
put-payload-to-the-queue (function).
remove-page-websocket (function).
websocket-route (class).
Packages are listed by definition order.
reblocks-websocketreblocks-websocket/websocket
common-lisp.
*background* (special variable).
in-thread (macro).
no-active-websockets (condition).
send-command (function).
send-script (function).
websocket-widget (class).
%call-with-lock (function).
%send (function).
%set-current-page-websockets (function).
%with-lock (macro).
*js-dependency* (special variable).
*route-created* (special variable).
*uri* (special variable).
*websockets* (special variable).
+ws-closed-states+ (constant).
add-page-websocket (function).
current-page-websockets (function).
in-thread-loop (macro).
make-websocket-client-code (function).
make-websocket-route (function).
on-close (function).
on-message (function).
on-open (function).
process-websocket (function).
put-payload-to-the-queue (function).
remove-page-websocket (function).
websocket-route (class).
Definitions are sorted by export status, category, package, and then by lexicographic order.
This variable becomes t during background processing.
Starts given piece of code in named thread, ensiring that reblocks/session::*session* and
reblocks/request:*request* will be bound during it’s execution.
Also, it set reblocks.websocket:*backround* to true, to make ‘update’ method distinguish between usual request processing and background activity.
Sends JS script to frontend via Websocket.
websocket-widget)) ¶reblocks/dependencies.
websocket-widget) &rest initargs) ¶websocket-widget)) ¶reblocks/widget.
websocket-route) env) ¶reblocks/routes.
websocket-widget) &key inserted-after inserted-before) ¶reblocks/widget.
Cache for js dependency.
We have to have a cached instance. Otherwise it will be slightly different for each widget, because of symbols autogenerated by Parenscript.
This variable will be set to true when first WebSocket widget will be initialized.
Starts give piece of code in named thread, ensiring that reblocks/session::*session* and
reblocks/request:*request* will be bound during it’s execution.
Also, it set reblocks.websocket:*backround* to true, to make ‘update’ method distinguish between usual request processing and background activity.
Sends JS script to frontend via Websocket.
Makes a route for websocket handle.
Automatically adds a prefix depending on current webapp and widget.
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