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340
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
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anything that is normally distributed (in either source or binary
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operating system on which the executable runs, unless that component
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If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
use ArrayAccess;
use Countable;
use Serializable;
/**
* Implementation of EventInterface.
*
* @since 1.0
*/
abstract class AbstractEvent implements EventInterface, ArrayAccess, Serializable, Countable
{
/**
* The event name.
*
* @var string
* @since 1.0
*/
protected $name;
/**
* The event arguments.
*
* @var array
* @since 1.0
*/
protected $arguments;
/**
* A flag to see if the event propagation is stopped.
*
* @var boolean
* @since 1.0
*/
protected $stopped = false;
/**
* Constructor.
*
* @param string $name The event name.
* @param array $arguments The event arguments.
*
* @since 1.0
*/
public function __construct($name, array $arguments = [])
{
$this->name = $name;
$this->arguments = $arguments;
}
/**
* Get the event name.
*
* @return string The event name.
*
* @since 1.0
*/
public function getName()
{
return $this->name;
}
/**
* Get an event argument value.
*
* @param string $name The argument name.
* @param mixed $default The default value if not found.
*
* @return mixed The argument value or the default value.
*
* @since 1.0
*/
public function getArgument($name, $default = null)
{
if (isset($this->arguments[$name])) {
return $this->arguments[$name];
}
return $default;
}
/**
* Tell if the given event argument exists.
*
* @param string $name The argument name.
*
* @return boolean True if it exists, false otherwise.
*
* @since 1.0
*/
public function hasArgument($name)
{
return isset($this->arguments[$name]);
}
/**
* Get all event arguments.
*
* @return array An associative array of argument names as keys and their values as values.
*
* @since 1.0
*/
public function getArguments()
{
return $this->arguments;
}
/**
* Tell if the event propagation is stopped.
*
* @return boolean True if stopped, false otherwise.
*
* @since 1.0
*/
public function isStopped()
{
return $this->stopped === true;
}
/**
* Stops the propagation of the event to further event listeners.
*
* @return void
*
* @since 2.0.0
*/
public function stopPropagation(): void
{
$this->stopped = true;
}
/**
* Count the number of arguments.
*
* @return integer The number of arguments.
*
* @since 1.0
*/
#[\ReturnTypeWillChange]
public function count()
{
return \count($this->arguments);
}
/**
* Serialize the event.
*
* @return string The serialized event.
*
* @since 1.0
*/
public function serialize()
{
return serialize($this->__serialize());
}
/**
* Serialize the event.
*
* @return array The data to be serialized
*
* @since 2.0.0
*/
public function __serialize()
{
return [
'name' => $this->name,
'arguments' => $this->arguments,
'stopped' => $this->stopped,
];
}
/**
* Unserialize the event.
*
* @param string $serialized The serialized event.
*
* @return void
*
* @since 1.0
*/
public function unserialize($serialized)
{
$this->__unserialize(unserialize($serialized));
}
/**
* Unserialize the event.
*
* @param array $data The serialized event.
*
* @return void
*
* @since 2.0.0
*/
public function __unserialize(array $data)
{
$this->name = $data['name'];
$this->arguments = $data['arguments'];
$this->stopped = $data['stopped'];
}
/**
* Tell if the given event argument exists.
*
* @param string $name The argument name.
*
* @return boolean True if it exists, false otherwise.
*
* @since 1.0
*/
#[\ReturnTypeWillChange]
public function offsetExists($name)
{
return $this->hasArgument($name);
}
/**
* Get an event argument value.
*
* @param string $name The argument name.
*
* @return mixed The argument value or null if not existing.
*
* @since 1.0
*/
#[\ReturnTypeWillChange]
public function offsetGet($name)
{
return $this->getArgument($name);
}
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event\Command;
use Joomla\Console\Command\AbstractCommand;
use Joomla\Event\DispatcherAwareInterface;
use Joomla\Event\DispatcherAwareTrait;
use Joomla\Event\DispatcherInterface;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
/**
* Command listing information about the application's event dispatcher.
*
* @since 2.0.0
*/
class DebugEventDispatcherCommand extends AbstractCommand implements DispatcherAwareInterface
{
use DispatcherAwareTrait;
/**
* The default command name
*
* @var string
* @since 2.0.0
*/
protected static $defaultName = 'debug:event-dispatcher';
/**
* Instantiate the command.
*
* @param DispatcherInterface $dispatcher The application event dispatcher.
*
* @since 2.0.0
*/
public function __construct(DispatcherInterface $dispatcher)
{
$this->setDispatcher($dispatcher);
parent::__construct();
}
/**
* Configure the command.
*
* @return void
*
* @since 2.0.0
*/
protected function configure(): void
{
$this->setDescription("Displays information about the application's event dispatcher");
$this->addArgument('event', InputArgument::OPTIONAL, 'Show the listeners for a specific event');
$this->setHelp(<<<'EOF'
The <info>%command.name%</info> command lists all of the registered event handlers in an application's event dispatcher:
<info>php %command.full_name%</info>
To get specific listeners for an event, specify its name:
<info>php %command.full_name% application.before_execute</info>
EOF
);
}
/**
* Internal function to execute the command.
*
* @param InputInterface $input The input to inject into the command.
* @param OutputInterface $output The output to inject into the command.
*
* @return integer The command exit code
*
* @since 2.0.0
*/
protected function doExecute(InputInterface $input, OutputInterface $output): int
{
$io = new SymfonyStyle($input, $output);
if ($event = $input->getArgument('event')) {
$listeners = $this->dispatcher->getListeners($event);
if (empty($listeners)) {
$io->warning(sprintf('The event "%s" does not have any registered listeners.', $event));
return 0;
}
$io->title(sprintf('%s Registered Listeners for "%s" Event', $this->getApplication()->getName(), $event));
$this->renderEventListenerTable($listeners, $io);
return 0;
}
$listeners = $this->dispatcher->getListeners();
if (empty($listeners)) {
$io->comment('There are no listeners registered to the event dispatcher.');
return 0;
}
$io->title(sprintf('%s Registered Listeners Grouped By Event', $this->getApplication()->getName()));
ksort($listeners);
foreach ($listeners as $subscribedEvent => $eventListeners) {
$io->section(sprintf('"%s" event', $subscribedEvent));
$this->renderEventListenerTable($eventListeners, $io);
}
return 0;
}
/**
* Formats a callable resource to be displayed in the console output
*
* @param callable $callable A callable resource to format
*
* @return string
*
* @since 2.0.0
* @throws \ReflectionException
* @note This method is based on \Symfony\Bundle\FrameworkBundle\Console\Descriptor\TextDescriptor::formatCallable()
*/
private function formatCallable($callable): string
{
if (\is_array($callable)) {
if (\is_object($callable[0])) {
return sprintf('%s::%s()', \get_class($callable[0]), $callable[1]);
}
return sprintf('%s::%s()', $callable[0], $callable[1]);
}
if (\is_string($callable)) {
return sprintf('%s()', $callable);
}
if ($callable instanceof \Closure) {
$r = new \ReflectionFunction($callable);
if (strpos($r->name, '{closure}') !== false) {
return 'Closure()';
}
if (null !== $class = $r->getClosureScopeClass()) {
return sprintf('%s::%s()', $class->name, $r->name);
}
return $r->name . '()';
}
if (method_exists($callable, '__invoke')) {
return sprintf('%s::__invoke()', \get_class($callable));
}
throw new \InvalidArgumentException('Callable is not describable.');
}
/**
* Renders the table of listeners for an event
*
* @param array $eventListeners The listeners for an event
* @param SymfonyStyle $io The I/O helper
*
* @return void
*
* @since 2.0.0
*/
private function renderEventListenerTable(array $eventListeners, SymfonyStyle $io): void
{
$tableHeaders = ['Order', 'Callable'];
$tableRows = [];
foreach ($eventListeners as $order => $listener) {
$tableRows[] = [
sprintf('#%d', $order + 1),
$this->formatCallable($listener),
];
}
$io->table($tableHeaders, $tableRows);
}
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
/**
* Implementation of a DispatcherInterface supporting prioritized listeners.
*
* @since 1.0
*/
class Dispatcher implements DispatcherInterface
{
/**
* An array of registered events indexed by the event names.
*
* @var EventInterface[]
* @since 1.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
protected $events = [];
/**
* An array of ListenersPriorityQueue indexed by the event names.
*
* @var ListenersPriorityQueue[]
* @since 1.0
*/
protected $listeners = [];
/**
* Set an event to the dispatcher. It will replace any event with the same name.
*
* @param EventInterface $event The event.
*
* @return $this
*
* @since 1.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
public function setEvent(EventInterface $event)
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0.',
__METHOD__
);
$this->events[$event->getName()] = $event;
return $this;
}
/**
* Add an event to this dispatcher, only if it is not existing.
*
* @param EventInterface $event The event.
*
* @return $this
*
* @since 1.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
public function addEvent(EventInterface $event)
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0.',
__METHOD__
);
if (!isset($this->events[$event->getName()])) {
$this->events[$event->getName()] = $event;
}
return $this;
}
/**
* Tell if the given event has been added to this dispatcher.
*
* @param EventInterface|string $event The event object or name.
*
* @return boolean True if the listener has the given event, false otherwise.
*
* @since 1.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
public function hasEvent($event)
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0.',
__METHOD__
);
if ($event instanceof EventInterface) {
$event = $event->getName();
}
return isset($this->events[$event]);
}
/**
* Get the event object identified by the given name.
*
* @param string $name The event name.
* @param mixed $default The default value if the event was not registered.
*
* @return EventInterface|mixed The event of the default value.
*
* @since 1.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
public function getEvent($name, $default = null)
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0.',
__METHOD__
);
if (isset($this->events[$name])) {
return $this->events[$name];
}
return $default;
}
/**
* Remove an event from this dispatcher. The registered listeners will remain.
*
* @param EventInterface|string $event The event object or name.
*
* @return $this
*
* @since 1.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
public function removeEvent($event)
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0.',
__METHOD__
);
if ($event instanceof EventInterface) {
$event = $event->getName();
}
if (isset($this->events[$event])) {
unset($this->events[$event]);
}
return $this;
}
/**
* Get the registered events.
*
* @return EventInterface[] The registered event.
*
* @since 1.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
public function getEvents()
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0.',
__METHOD__
);
return $this->events;
}
/**
* Clear all events.
*
* @return EventInterface[] The old events.
*
* @since 1.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
public function clearEvents()
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0.',
__METHOD__
);
$events = $this->events;
$this->events = [];
return $events;
}
/**
* Count the number of registered event.
*
* @return integer The number of registered events.
*
* @since 1.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
public function countEvents()
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0.',
__METHOD__
);
return \count($this->events);
}
/**
* Attaches a listener to an event
*
* @param string $eventName The event to listen to.
* @param callable $callback A callable function
* @param integer $priority The priority at which the $callback executed
*
* @return boolean
*
* @since 1.0
*/
public function addListener(string $eventName, callable $callback, int $priority = 0): bool
{
if (!isset($this->listeners[$eventName])) {
$this->listeners[$eventName] = new ListenersPriorityQueue();
}
$this->listeners[$eventName]->add($callback, $priority);
return true;
}
/**
* Get the priority of the given listener for the given event.
*
* @param string $eventName The event to listen to.
* @param callable $callback A callable function
*
* @return mixed The listener priority or null if the listener doesn't exist.
*
* @since 1.0
*/
public function getListenerPriority($eventName, callable $callback)
{
if (isset($this->listeners[$eventName])) {
return $this->listeners[$eventName]->getPriority($callback);
}
}
/**
* Get the listeners registered to the given event.
*
* @param string|null $event The event to fetch listeners for or null to fetch all listeners
*
* @return callable[] An array of registered listeners sorted according to their priorities.
*
* @since 1.0
*/
public function getListeners(?string $event = null)
{
if ($event !== null) {
if (isset($this->listeners[$event])) {
return $this->listeners[$event]->getAll();
}
return [];
}
$dispatcherListeners = [];
foreach ($this->listeners as $registeredEvent => $listeners) {
$dispatcherListeners[$registeredEvent] = $listeners->getAll();
}
return $dispatcherListeners;
}
/**
* Tell if the given listener has been added.
*
* If an event is specified, it will tell if the listener is registered for that event.
*
* @param callable $callback The callable to check is listening to the event.
* @param ?string $eventName An optional event name to check a listener is subscribed to.
*
* @return boolean True if the listener is registered, false otherwise.
*
* @since 1.0
*/
public function hasListener(callable $callback, ?string $eventName = null)
{
if ($eventName) {
if (isset($this->listeners[$eventName])) {
return $this->listeners[$eventName]->has($callback);
}
} else {
foreach ($this->listeners as $queue) {
if ($queue->has($callback)) {
return true;
}
}
}
return false;
}
/**
* Removes an event listener from the specified event.
*
* @param string $eventName The event to remove a listener from.
* @param callable $listener The listener to remove.
*
* @return void
*
* @since 2.0.0
*/
public function removeListener(string $eventName, callable $listener): void
{
if (isset($this->listeners[$eventName])) {
$this->listeners[$eventName]->remove($listener);
}
}
/**
* Clear the listeners in this dispatcher.
*
* If an event is specified, the listeners will be cleared only for that event.
*
* @param string $event The event name.
*
* @return $this
*
* @since 1.0
*/
public function clearListeners($event = null)
{
if ($event) {
if (isset($this->listeners[$event])) {
unset($this->listeners[$event]);
}
} else {
$this->listeners = [];
}
return $this;
}
/**
* Count the number of registered listeners for the given event.
*
* @param string $event The event name.
*
* @return integer
*
* @since 1.0
*/
public function countListeners($event)
{
return isset($this->listeners[$event]) ? \count($this->listeners[$event]) : 0;
}
/**
* Adds an event subscriber.
*
* @param SubscriberInterface $subscriber The subscriber.
*
* @return void
*
* @since 2.0.0
*/
public function addSubscriber(SubscriberInterface $subscriber): void
{
foreach ($subscriber->getSubscribedEvents() as $eventName => $params) {
if (\is_array($params)) {
$this->addListener($eventName, [$subscriber, $params[0]], $params[1] ?? Priority::NORMAL);
} else {
$this->addListener($eventName, [$subscriber, $params]);
}
}
}
/**
* Removes an event subscriber.
*
* @param SubscriberInterface $subscriber The subscriber.
*
* @return void
*
* @since 2.0.0
*/
public function removeSubscriber(SubscriberInterface $subscriber): void
{
foreach ($subscriber->getSubscribedEvents() as $eventName => $params) {
if (\is_array($params)) {
$this->removeListener($eventName, [$subscriber, $params[0]]);
} else {
$this->removeListener($eventName, [$subscriber, $params]);
}
}
}
/**
* Dispatches an event to all registered listeners.
*
* @param string $name The name of the event to dispatch.
* @param ?EventInterface $event The event to pass to the event handlers/listeners.
* If not supplied, an empty EventInterface instance is created.
* Note, not passing an event is deprecated and will be required as of 3.0.
*
* @return EventInterface
*
* @since 2.0.0
*/
public function dispatch(string $name, ?EventInterface $event = null): EventInterface
{
if (!($event instanceof EventInterface)) {
trigger_deprecation(
'joomla/event',
'2.0.0',
'Not passing an event object to %s() is deprecated, as of 3.0 the $event argument will be required.',
__METHOD__
);
$event = $this->getDefaultEvent($name);
}
if (isset($this->listeners[$event->getName()])) {
foreach ($this->listeners[$event->getName()] as $listener) {
if ($event->isStopped()) {
return $event;
}
$listener($event);
}
}
return $event;
}
/**
* Trigger an event.
*
* @param EventInterface|string $event The event object or name.
*
* @return EventInterface The event after being passed through all listeners.
*
* @since 1.0
* @deprecated 3.0 Use dispatch() instead.
*/
public function triggerEvent($event)
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0, use %s::dispatch() instead.',
__METHOD__,
DispatcherInterface::class
);
if (!($event instanceof EventInterface)) {
$event = $this->getDefaultEvent($event);
}
return $this->dispatch($event->getName(), $event);
}
/**
* Get an event object for the specified event name
*
* @param string $name The event name to get an EventInterface object for
*
* @return EventInterface
*
* @since 2.0.0
* @deprecated 3.0 Default event objects will no longer be supported
*/
private function getDefaultEvent(string $name): EventInterface
{
if (isset($this->events[$name])) {
return $this->events[$name];
}
return new Event($name);
}
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
/**
* Interface to be implemented by classes depending on a dispatcher.
*
* @since 1.0
*/
interface DispatcherAwareInterface
{
/**
* Set the dispatcher to use.
*
* @param DispatcherInterface $dispatcher The dispatcher to use.
*
* @return DispatcherAwareInterface This method is chainable.
*
* @since 1.0
*/
public function setDispatcher(DispatcherInterface $dispatcher);
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
/**
* Defines the trait for a Dispatcher Aware Class.
*
* @since 1.2.0
*/
trait DispatcherAwareTrait
{
/**
* Event Dispatcher
*
* @var DispatcherInterface|null
* @since 1.2.0
*/
private $dispatcher;
/**
* Get the event dispatcher.
*
* @return DispatcherInterface
*
* @since 1.2.0
* @throws \UnexpectedValueException May be thrown if the dispatcher has not been set.
*/
public function getDispatcher()
{
if ($this->dispatcher) {
return $this->dispatcher;
}
throw new \UnexpectedValueException('Dispatcher not set in ' . __CLASS__);
}
/**
* Set the dispatcher to use.
*
* @param DispatcherInterface $dispatcher The dispatcher to use.
*
* @return $this
*
* @since 1.2.0
*/
public function setDispatcher(DispatcherInterface $dispatcher)
{
$this->dispatcher = $dispatcher;
return $this;
}
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
/**
* Interface for event dispatchers.
*
* @since 1.0
*/
interface DispatcherInterface
{
/**
* Dispatches an event to all registered listeners.
*
* @param string $name The name of the event to dispatch.
* @param ?EventInterface $event The event to pass to the event handlers/listeners.
* If not supplied, an empty EventInterface instance is created.
* Note, not passing an event is deprecated and will be required as of 3.0.
*
* @return EventInterface
*
* @since 2.0.0
*/
public function dispatch(string $name, ?EventInterface $event = null): EventInterface;
/**
* Attaches a listener to an event
*
* @param string $eventName The event to listen to.
* @param callable $callback A callable function.
* @param integer $priority The priority at which the $callback executed.
*
* @return boolean
*
* @since 2.0.0
*/
public function addListener(string $eventName, callable $callback, int $priority = 0): bool;
/**
* Clear the listeners in this dispatcher.
*
* If an event is specified, the listeners will be cleared only for that event.
*
* @param string $event The event name.
*
* @return $this
*
* @since 2.0.0
*/
public function clearListeners($event = null);
/**
* Count the number of registered listeners for the given event.
*
* @param string $event The event name.
*
* @return integer
*
* @since 2.0.0
*/
public function countListeners($event);
/**
* Get the listeners registered to the given event.
*
* @param string|null $event The event to fetch listeners for or null to fetch all listeners
*
* @return callable[] An array of registered listeners sorted according to their priorities.
*
* @since 2.0.0
*/
public function getListeners(?string $event = null);
/**
* Tell if the given listener has been added.
*
* If an event is specified, it will tell if the listener is registered for that event.
*
* @param callable $callback The callable to check is listening to the event.
* @param string|null $eventName An optional event name to check a listener is subscribed to.
*
* @return boolean True if the listener is registered, false otherwise.
*
* @since 2.0.0
*/
public function hasListener(callable $callback, ?string $eventName = null);
/**
* Removes an event listener from the specified event.
*
* @param string $eventName The event to remove a listener from.
* @param callable $listener The listener to remove.
*
* @return void
*
* @since 2.0.0
*/
public function removeListener(string $eventName, callable $listener): void;
/**
* Adds an event subscriber.
*
* @param SubscriberInterface $subscriber The subscriber.
*
* @return void
*
* @since 2.0.0
*/
public function addSubscriber(SubscriberInterface $subscriber): void;
/**
* Removes an event subscriber.
*
* @param SubscriberInterface $subscriber The subscriber.
*
* @return void
*
* @since 2.0.0
*/
public function removeSubscriber(SubscriberInterface $subscriber): void;
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
use InvalidArgumentException;
/**
* Default Event class.
*
* @since 1.0
*/
class Event extends AbstractEvent
{
/**
* Add an event argument, only if it is not existing.
*
* @param string $name The argument name.
* @param mixed $value The argument value.
*
* @return $this
*
* @since 1.0
*/
public function addArgument($name, $value)
{
if (!isset($this->arguments[$name])) {
$this->arguments[$name] = $value;
}
return $this;
}
/**
* Add argument to event.
*
* @param string $name Argument name.
* @param mixed $value Value.
*
* @return $this
*
* @since 1.0
*/
public function setArgument($name, $value)
{
$this->arguments[$name] = $value;
return $this;
}
/**
* Remove an event argument.
*
* @param string $name The argument name.
*
* @return mixed The old argument value or null if it is not existing.
*
* @since 1.0
*/
public function removeArgument($name)
{
$return = null;
if (isset($this->arguments[$name])) {
$return = $this->arguments[$name];
unset($this->arguments[$name]);
}
return $return;
}
/**
* Clear all event arguments.
*
* @return array The old arguments.
*
* @since 1.0
*/
public function clearArguments()
{
$arguments = $this->arguments;
$this->arguments = [];
return $arguments;
}
/**
* Stop the event propagation.
*
* @return void
*
* @since 1.0
* @deprecated 3.0 Use stopPropagation instead
*/
public function stop()
{
trigger_deprecation(
'joomla/event',
'2.0.0',
'%s() is deprecated and will be removed in 3.0, use %s::stopPropagation() instead.',
__METHOD__,
EventInterface::class
);
$this->stopPropagation();
}
/**
* Set the value of an event argument.
*
* @param string $name The argument name.
* @param mixed $value The argument value.
*
* @return void
*
* @since 1.0
* @throws InvalidArgumentException If the argument name is null.
*/
#[\ReturnTypeWillChange]
public function offsetSet($name, $value)
{
if ($name === null) {
throw new InvalidArgumentException('The argument name cannot be null.');
}
$this->setArgument($name, $value);
}
/**
* Remove an event argument.
*
* @param string $name The argument name.
*
* @return void
*
* @since 1.0
*/
#[\ReturnTypeWillChange]
public function offsetUnset($name)
{
$this->removeArgument($name);
}
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
use BadMethodCallException;
/**
* Implementation of an immutable Event.
* An immutable event cannot be modified after instantiation :
*
* - its propagation cannot be stopped
* - its arguments cannot be modified
*
* You may want to use this event when you want to ensure that
* the listeners won't manipulate it.
*
* @since 1.0
*/
final class EventImmutable extends AbstractEvent
{
/**
* A flag to see if the constructor has been
* already called.
*
* @var boolean
*/
private $constructed = false;
/**
* Constructor.
*
* @param string $name The event name.
* @param array $arguments The event arguments.
*
* @throws BadMethodCallException
*
* @since 1.0
*/
public function __construct($name, array $arguments = [])
{
if ($this->constructed) {
throw new BadMethodCallException(
sprintf('Cannot reconstruct the EventImmutable %s.', $this->name)
);
}
$this->constructed = true;
parent::__construct($name, $arguments);
}
/**
* Set the value of an event argument.
*
* @param string $name The argument name.
* @param mixed $value The argument value.
*
* @return void
*
* @since 1.0
* @throws BadMethodCallException
*/
public function offsetSet($name, $value)
{
throw new BadMethodCallException(
sprintf(
'Cannot set the argument %s of the immutable event %s.',
$name,
$this->name
)
);
}
/**
* Remove an event argument.
*
* @param string $name The argument name.
*
* @return void
*
* @throws BadMethodCallException
*
* @since 1.0
*/
public function offsetUnset($name)
{
throw new BadMethodCallException(
sprintf(
'Cannot remove the argument %s of the immutable event %s.',
$name,
$this->name
)
);
}
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
/**
* Interface for events.
* An event has a name and its propagation can be stopped.
*
* @since 1.0
*/
interface EventInterface
{
/**
* Get an event argument value.
*
* @param string $name The argument name.
* @param mixed $default The default value if not found.
*
* @return mixed The argument value or the default value.
*
* @since 2.0.0
*/
public function getArgument($name, $default = null);
/**
* Get the event name.
*
* @return string The event name.
*
* @since 1.0
*/
public function getName();
/**
* Tell if the event propagation is stopped.
*
* @return boolean True if stopped, false otherwise.
*
* @since 1.0
*/
public function isStopped();
/**
* Stops the propagation of the event to further event listeners.
*
* @return void
*
* @since 2.0.0
*/
public function stopPropagation(): void;
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
use Psr\Container\ContainerInterface;
/**
* Decorator for an event listener to be pulled from the service container.
*
* @since 2.0.0
*/
final class LazyServiceEventListener
{
/**
* The service container to load the service from
*
* @var ContainerInterface
* @since 2.0.0
*/
private $container;
/**
* The ID of the service from the container to be used
*
* @var string
* @since 2.0.0
*/
private $serviceId;
/**
* The method from the service to be called
*
* @var string
* @since 2.0.0
*/
private $method;
/**
* Constructor.
*
* @param ContainerInterface $container The service container to load the service from when it shall be executed
* @param string $serviceId The ID of the service from the container to be used
* @param string $method The method from the service to be called if necessary. If left empty, the service must be a callable;
* (i.e. have an `__invoke()` method on a class)
*
* @since 2.0.0
* @throws \InvalidArgumentException if the service ID is empty
*/
public function __construct(ContainerInterface $container, string $serviceId, string $method = '')
{
if (empty($serviceId)) {
throw new \InvalidArgumentException(
sprintf(
'The $serviceId parameter cannot be empty in %s',
self::class
)
);
}
$this->container = $container;
$this->serviceId = $serviceId;
$this->method = $method;
}
/**
* Load a service from the container to listen to an event.
*
* @param EventInterface $event The event to process
*
* @return void
*
* @since 2.0.0
* @throws \InvalidArgumentException if the constructor's $method parameter is empty when not executing a callable service
* @throws \RuntimeException if the service cannot be executed
*/
public function __invoke(EventInterface $event): void
{
if (!$this->container->has($this->serviceId)) {
throw new \RuntimeException(
sprintf(
'The "%s" service has not been registered to the service container',
$this->serviceId
)
);
}
$service = $this->container->get($this->serviceId);
// If the service is callable on its own, just execute it
if (\is_callable($service)) {
\call_user_func($service, $event);
return;
}
if (empty($this->method)) {
throw new \InvalidArgumentException(
sprintf(
'The $method argument is required when creating a "%s" to call a method from the "%s" service.',
self::class,
$this->serviceId
)
);
}
if (!method_exists($service, $this->method)) {
throw new \RuntimeException(
sprintf(
'The "%s" method does not exist on "%s" (from service "%s")',
$this->method,
\get_class($service),
$this->serviceId
)
);
}
\call_user_func([$service, $this->method], $event);
}
}

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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
/**
* A class containing an inner listeners priority queue that can be iterated multiple times.
*
* @since 1.0
* @internal
*/
final class ListenersPriorityQueue implements \IteratorAggregate, \Countable
{
/**
* The listeners for an event.
*
* @var array
* @since 2.0.0
*/
private $listeners = [];
/**
* Add a listener with the given priority only if not already present.
*
* @param callable $callback A callable function acting as an event listener.
* @param integer $priority The listener priority.
*
* @return $this
*
* @since 1.0
*/
public function add(callable $callback, int $priority): self
{
$this->listeners[$priority][] = $callback;
return $this;
}
/**
* Remove a listener from the queue.
*
* @param callable $callback A callable function acting as an event listener.
*
* @return $this
*
* @since 1.0
*/
public function remove(callable $callback): self
{
foreach ($this->listeners as $priority => $listeners) {
if (($key = array_search($callback, $listeners, true)) !== false) {
unset($this->listeners[$priority][$key]);
}
}
return $this;
}
/**
* Tell if the listener exists in the queue.
*
* @param callable $callback A callable function acting as an event listener.
*
* @return boolean True if it exists, false otherwise.
*
* @since 1.0
*/
public function has(callable $callback): bool
{
foreach ($this->listeners as $priority => $listeners) {
if (($key = array_search($callback, $listeners, true)) !== false) {
return true;
}
}
return false;
}
/**
* Get the priority of the given listener.
*
* @param callable $callback A callable function acting as an event listener.
* @param mixed $default The default value to return if the listener doesn't exist.
*
* @return mixed The listener priority if it exists or the specified default value
*
* @since 1.0
*/
public function getPriority(callable $callback, $default = null)
{
foreach ($this->listeners as $priority => $listeners) {
if (($key = array_search($callback, $listeners, true)) !== false) {
return $priority;
}
}
return $default;
}
/**
* Get all listeners contained in this queue, sorted according to their priority.
*
* @return callable[] An array of listeners.
*
* @since 1.0
*/
public function getAll(): array
{
if (empty($this->listeners)) {
return [];
}
krsort($this->listeners);
return \call_user_func_array('array_merge', $this->listeners);
}
/**
* Get the priority queue.
*
* @return \ArrayIterator
*
* @since 1.0
*/
#[\ReturnTypeWillChange]
public function getIterator()
{
return new \ArrayIterator($this->getAll());
}
/**
* Count the number of listeners in the queue.
*
* @return integer The number of listeners in the queue.
*
* @since 1.0
*/
#[\ReturnTypeWillChange]
public function count()
{
$count = 0;
foreach ($this->listeners as $priority) {
$count += \count($priority);
}
return $count;
}
}

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libraries/vendor/joomla/event/src/Priority.php vendored Normal file
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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
/**
* An enumeration of priorities for event listeners that you are encouraged to use when adding them in the Dispatcher.
*
* @since 1.0
*/
final class Priority
{
/**
* Indicates the event listener should have a minimum priority.
*
* @var integer
* @since 1.0
*/
public const MIN = -3;
/**
* Indicates the event listener should have a low priority.
*
* @var integer
* @since 1.0
*/
public const LOW = -2;
/**
* Indicates the event listener should have a below normal priority.
*
* @var integer
* @since 1.0
*/
public const BELOW_NORMAL = -1;
/**
* Indicates the event listener should have a normal priority. This is the default priority.
*
* @var integer
* @since 1.0
*/
public const NORMAL = 0;
/**
* Indicates the event listener should have a above normal priority.
*
* @var integer
* @since 1.0
*/
public const ABOVE_NORMAL = 1;
/**
* Indicates the event listener should have a high priority.
*
* @var integer
* @since 1.0
*/
public const HIGH = 2;
/**
* Indicates the event listener should have a maximum priority.
*
* @var integer
* @since 1.0
*/
public const MAX = 3;
/**
* Disallow instantiation of this class
*
* @since 1.0
*/
private function __construct()
{
}
}

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libraries/vendor/joomla/event/src/SubscriberInterface.php vendored Normal file
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<?php
/**
* Part of the Joomla Framework Event Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Event;
/**
* Interface for event subscribers.
*
* @since 2.0.0
*/
interface SubscriberInterface
{
/**
* Returns an array of events this subscriber will listen to.
*
* The array keys are event names and the value can be:
*
* - The method name to call (priority defaults to 0)
* - An array composed of the method name to call and the priority
*
* For instance:
*
* * array('eventName' => 'methodName')
* * array('eventName' => array('methodName', $priority))
*
* @return array
*
* @since 2.0.0
*/
public static function getSubscribedEvents(): array;
}