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ðŸ“„ publishing.xml(1.4 KB)

Editing: publishing.php

<?php
/**
 * @package     Joomla.Plugin
 * @subpackage  Workflow.Publishing
 *
 * @copyright   (C) 2020 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

use Joomla\CMS\Application\CMSApplicationInterface;
use Joomla\CMS\Event\Table\BeforeStoreEvent;
use Joomla\CMS\Event\View\DisplayEvent;
use Joomla\CMS\Event\Workflow\WorkflowFunctionalityUsedEvent;
use Joomla\CMS\Event\Workflow\WorkflowTransitionEvent;
use Joomla\CMS\Factory;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\Model\DatabaseModelInterface;
use Joomla\CMS\Plugin\CMSPlugin;
use Joomla\CMS\Table\ContentHistory;
use Joomla\CMS\Table\TableInterface;
use Joomla\CMS\Workflow\WorkflowPluginTrait;
use Joomla\CMS\Workflow\WorkflowServiceInterface;
use Joomla\Event\EventInterface;
use Joomla\Event\SubscriberInterface;
use Joomla\Registry\Registry;
use Joomla\String\Inflector;

/**
 * Workflow Publishing Plugin
 *
 * @since  4.0.0
 */
class PlgWorkflowPublishing extends CMSPlugin implements SubscriberInterface
{
	use WorkflowPluginTrait;

/**
	 * Load the language file on instantiation.
	 *
	 * @var    boolean
	 * @since  4.0.0
	 */
	protected $autoloadLanguage = true;

/**
	 * Loads the CMS Application for direct access
	 *
	 * @var   CMSApplicationInterface
	 * @since 4.0.0
	 */
	protected $app;

/**
	 * The name of the supported name to check against
	 *
	 * @var   string
	 * @since 4.0.0
	 */
	protected $supportFunctionality = 'core.state';

/**
	 * Returns an array of events this subscriber will listen to.
	 *
	 * @return  array
	 *
	 * @since   4.0.0
	 */
	public static function getSubscribedEvents(): array
	{
		return [
			'onAfterDisplay'                  => 'onAfterDisplay',
			'onContentBeforeChangeState'      => 'onContentBeforeChangeState',
			'onContentBeforeSave'             => 'onContentBeforeSave',
			'onContentPrepareForm'            => 'onContentPrepareForm',
			'onContentVersioningPrepareTable' => 'onContentVersioningPrepareTable',
			'onTableBeforeStore'              => 'onTableBeforeStore',
			'onWorkflowAfterTransition'       => 'onWorkflowAfterTransition',
			'onWorkflowBeforeTransition'      => 'onWorkflowBeforeTransition',
			'onWorkflowFunctionalityUsed'     => 'onWorkflowFunctionalityUsed',
		];
	}

/**
	 * The form event.
	 *
	 * @param   EventInterface  $event  The event
	 *
	 * @since   4.0.0
	 */
	public function onContentPrepareForm(EventInterface $event)
	{
		$form = $event->getArgument('0');
		$data = $event->getArgument('1');

$context = $form->getName();

// Extend the transition form
		if ($context === 'com_workflow.transition')
		{
			$this->enhanceTransitionForm($form, $data);

return;
		}

$this->enhanceItemForm($form, $data);
	}

/**
	 * Add different parameter options to the transition view, we need when executing the transition
	 *
	 * @param   Form      $form The form
	 * @param   stdClass  $data The data
	 *
	 * @return  boolean
	 *
	 * @since   4.0.0
	 */
	protected function enhanceTransitionForm(Form $form, $data)
	{
		$workflow = $this->enhanceWorkflowTransitionForm($form, $data);

if (!$workflow)
		{
			return true;
		}

$form->setFieldAttribute('publishing', 'extension', $workflow->extension, 'options');

return true;
	}

/**
	 * Disable certain fields in the item  form view, when we want to take over this function in the transition
	 * Check also for the workflow implementation and if the field exists
	 *
	 * @param   Form      $form  The form
	 * @param   stdClass  $data  The data
	 *
	 * @return  boolean
	 *
	 * @since   4.0.0
	 */
	protected function enhanceItemForm(Form $form, $data)
	{
		$context = $form->getName();

if (!$this->isSupported($context))
		{
			return true;
		}

$parts = explode('.', $context);

$component = $this->app->bootComponent($parts[0]);

$modelName = $component->getModelName($context);

$table = $component->getMVCFactory()->createModel($modelName, $this->app->getName(), ['ignore_request' => true])
			->getTable();

$fieldname = $table->getColumnAlias('published');

$options = $form->getField($fieldname)->options;

$value = isset($data->$fieldname) ? $data->$fieldname : $form->getValue($fieldname, null, 0);

$text = '-';

$textclass = 'body';

switch ($value)
		{
			case 1:
				$textclass = 'success';
				break;

case 0:
			case -2:
				$textclass = 'danger';
		}

if (!empty($options))
		{
			foreach ($options as $option)
			{
				if ($option->value == $value)
				{
					$text = $option->text;

break;
				}
			}
		}

$form->setFieldAttribute($fieldname, 'type', 'spacer');

$label = '<span class="text-' . $textclass . '">' . htmlentities($text, ENT_COMPAT, 'UTF-8') . '</span>';
		$form->setFieldAttribute($fieldname, 'label', Text::sprintf('PLG_WORKFLOW_PUBLISHING_PUBLISHED', $label));

return true;
	}

/**
	 * Manipulate the generic list view
	 *
	 * @param   DisplayEvent    $event
	 *
	 * @since   4.0.0
	 */
	public function onAfterDisplay(DisplayEvent $event)
	{
		$app = Factory::getApplication();

if (!$app->isClient('administrator'))
		{
			return;
		}

$component = $event->getArgument('extensionName');
		$section   = $event->getArgument('section');

// We need the single model context for checking for workflow
		$singularsection = Inflector::singularize($section);

if (!$this->isSupported($component . '.' . $singularsection))
		{
			return true;
		}

// That's the hard coded list from the AdminController publish method => change, when it's make dynamic in the future
		$states = [
			'publish',
			'unpublish',
			'archive',
			'trash',
			'report',
		];

$js = "
			document.addEventListener('DOMContentLoaded', function()
			{
				var dropdown = document.getElementById('toolbar-status-group');

if (!dropdown)
				{
					return;
				}

" . json_encode($states) . ".forEach((action) => {
					var button = document.getElementById('status-group-children-' + action);

if (button)
					{
						button.classList.add('d-none');
					}
				});

});
		";

$app->getDocument()->addScriptDeclaration($js);

return true;
	}

/**
	 * Check if we can execute the transition
	 *
	 * @param   WorkflowTransitionEvent  $event
	 *
	 * @return boolean
	 *
	 * @since   4.0.0
	 */
	public function onWorkflowBeforeTransition(WorkflowTransitionEvent $event)
	{
		$context    = $event->getArgument('extension');
		$transition = $event->getArgument('transition');
		$pks        = $event->getArgument('pks');

if (!$this->isSupported($context) || !is_numeric($transition->options->get('publishing')))
		{
			return true;
		}

$value = $transition->options->get('publishing');

if (!is_numeric($value))
		{
			return true;
		}

/**
		 * Here it becomes tricky. We would like to use the component models publish method, so we will
		 * Execute the normal "onContentBeforeChangeState" plugins. But they could cancel the execution,
		 * So we have to precheck and cancel the whole transition stuff if not allowed.
		 */
		$this->app->set('plgWorkflowPublishing.' . $context, $pks);

$result = $this->app->triggerEvent('onContentBeforeChangeState', [
			$context,
			$pks,
			$value,
			]
		);

// Release allowed pks, the job is done
		$this->app->set('plgWorkflowPublishing.' . $context, []);

if (in_array(false, $result, true))
		{
			$event->setStopTransition();

return false;
		}

return true;
	}

/**
	 * Change State of an item. Used to disable state change
	 *
	 * @param   WorkflowTransitionEvent  $event
	 *
	 * @return boolean
	 *
	 * @since   4.0.0
	 */
	public function onWorkflowAfterTransition(WorkflowTransitionEvent $event)
	{
		$context       = $event->getArgument('extension');
		$extensionName = $event->getArgument('extensionName');
		$transition    = $event->getArgument('transition');
		$pks           = $event->getArgument('pks');

if (!$this->isSupported($context))
		{
			return true;
		}

$component = $this->app->bootComponent($extensionName);

$value = $transition->options->get('publishing');

if (!is_numeric($value))
		{
			return;
		}

$options = [
			'ignore_request'            => true,
			// We already have triggered onContentBeforeChangeState, so use our own
			'event_before_change_state' => 'onWorkflowBeforeChangeState',
		];

$modelName = $component->getModelName($context);

$model = $component->getMVCFactory()->createModel($modelName, $this->app->getName(), $options);

$model->publish($pks, $value);
	}

/**
	 * Change State of an item. Used to disable state change
	 *
	 * @param   EventInterface  $event
	 *
	 * @return boolean
	 *
	 * @throws Exception
	 * @since   4.0.0
	 */
	public function onContentBeforeChangeState(EventInterface $event)
	{
		$context = $event->getArgument('0');
		$pks     = $event->getArgument('1');

if (!$this->isSupported($context))
		{
			return true;
		}

// We have allowed the pks, so we're the one who triggered
		// With onWorkflowBeforeTransition => free pass
		if ($this->app->get('plgWorkflowPublishing.' . $context) === $pks)
		{
			return true;
		}

throw new Exception(Text::_('PLG_WORKFLOW_PUBLISHING_CHANGE_STATE_NOT_ALLOWED'));
	}

/**
	 * The save event.
	 *
	 * @param   EventInterface  $event
	 *
	 * @return  boolean
	 *
	 * @since   4.0.0
	 */
	public function onContentBeforeSave(EventInterface $event)
	{
		$context = $event->getArgument('0');

/** @var TableInterface $table */
		$table = $event->getArgument('1');
		$isNew = $event->getArgument('2');
		$data  = $event->getArgument('3');

if (!$this->isSupported($context))
		{
			return true;
		}

$keyName = $table->getColumnAlias('published');

// Check for the old value
		$article = clone $table;

$article->load($table->id);

/**
		 * We don't allow the change of the state when we use the workflow
		 * As we're setting the field to disabled, no value should be there at all
		 */
		if (isset($data[$keyName]))
		{
			$this->app->enqueueMessage(Text::_('PLG_WORKFLOW_PUBLISHING_CHANGE_STATE_NOT_ALLOWED'), 'error');

return false;
		}

return true;
	}

/**
	 * We remove the publishing field from the versioning
	 *
	 * @param   EventInterface  $event
	 *
	 * @return  boolean
	 *
	 * @since   4.0.0
	 */
	public function onContentVersioningPrepareTable(EventInterface $event)
	{
		$subject = $event->getArgument('subject');
		$context = $event->getArgument('extension');

if (!$this->isSupported($context))
		{
			return true;
		}

$parts = explode('.', $context);

$component = $this->app->bootComponent($parts[0]);

$modelName = $component->getModelName($context);

$model = $component->getMVCFactory()->createModel($modelName, $this->app->getName(), ['ignore_request' => true]);

$table = $model->getTable();

$subject->ignoreChanges[] = $table->getColumnAlias('published');
	}

/**
	 * Pre-processor for $table->store($updateNulls)
	 *
	 * @param   BeforeStoreEvent  $event  The event to handle
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	public function onTableBeforeStore(BeforeStoreEvent $event)
	{
		$subject = $event->getArgument('subject');

if (!($subject instanceof ContentHistory))
		{
			return;
		}

$parts = explode('.', $subject->item_id);

$typeAlias = $parts[0] . (isset($parts[1]) ? '.' . $parts[1] : '');

if (!$this->isSupported($typeAlias))
		{
			return;
		}

$component = $this->app->bootComponent($parts[0]);

$modelName = $component->getModelName($typeAlias);

$model = $component->getMVCFactory()->createModel($modelName, $this->app->getName(), ['ignore_request' => true]);

$table = $model->getTable();

$field = $table->getColumnAlias('published');

$versionData = new Registry($subject->version_data);

$versionData->remove($field);

$subject->version_data = $versionData->toString();
	}

/**
	 * Check if the current plugin should execute workflow related activities
	 *
	 * @param   string  $context
	 *
	 * @return boolean
	 *
	 * @since   4.0.0
	 */
	protected function isSupported($context)
	{
		if (!$this->checkAllowedAndForbiddenlist($context) || !$this->checkExtensionSupport($context, $this->supportFunctionality))
		{
			return false;
		}

$parts = explode('.', $context);

// We need at least the extension + view for loading the table fields
		if (count($parts) < 2)
		{
			return false;
		}

$component = $this->app->bootComponent($parts[0]);

if (!$component instanceof WorkflowServiceInterface
			|| !$component->isWorkflowActive($context)
			|| !$component->supportFunctionality($this->supportFunctionality, $context))
		{
			return false;
		}

$modelName = $component->getModelName($context);

$model = $component->getMVCFactory()->createModel($modelName, $this->app->getName(), ['ignore_request' => true]);

if (!$model instanceof DatabaseModelInterface || !method_exists($model, 'publish'))
		{
			return false;
		}

$table = $model->getTable();

if (!$table instanceof TableInterface || !$table->hasField('published'))
		{
			return false;
		}

return true;
	}

/**
	 * If plugin supports the functionality we set the used variable
	 *
	 * @param   WorkflowFunctionalityUsedEvent  $event
	 *
	 * @since 4.0.0
	 */
	public function onWorkflowFunctionalityUsed(WorkflowFunctionalityUsedEvent $event)
	{
		$functionality = $event->getArgument('functionality');

if ($functionality !== 'core.state')
		{
			return;
		}

$event->setUsed();
	}
}

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