<?php
/*
 * @copyright   Copyright (C) 2010-2024 Combodo SAS
 * @license     http://opensource.org/licenses/AGPL-3.0
 */

use Combodo\iTop\Application\Helper\Session;
use Combodo\iTop\Application\TwigBase\Twig\TwigHelper;
use Combodo\iTop\Application\UI\Base\Component\Button\ButtonUIBlockFactory;
use Combodo\iTop\Application\UI\Base\Component\DataTable\DataTableUIBlockFactory;
use Combodo\iTop\Application\UI\Base\Component\Form\Form;
use Combodo\iTop\Application\UI\Base\Component\GlobalSearch\GlobalSearchHelper;
use Combodo\iTop\Application\UI\Base\Component\Input\InputUIBlockFactory;
use Combodo\iTop\Application\UI\Base\Component\Panel\PanelUIBlockFactory;
use Combodo\iTop\Application\UI\Base\Component\Title\TitleUIBlockFactory;
use Combodo\iTop\Application\UI\Base\Component\Toolbar\ToolbarUIBlockFactory;
use Combodo\iTop\Application\UI\Base\Layout\PageContent\PageContentFactory;
use Combodo\iTop\Application\UI\Base\Layout\UIContentBlock;
use Combodo\iTop\Application\UI\Base\Layout\UIContentBlockUIBlockFactory;
use Combodo\iTop\Application\WebPage\ErrorPage;
use Combodo\iTop\Application\WebPage\iTopWebPage;
use Combodo\iTop\Application\WebPage\WebPage;
use Combodo\iTop\Application\WelcomePopup\WelcomePopupService;
use Combodo\iTop\Controller\Base\Layout\ObjectController;
use Combodo\iTop\Controller\WelcomePopupController;
use Combodo\iTop\Service\Router\Router;

/**
 * Displays a popup welcome message, once per session at maximum
 * until the user unchecks the "Display welcome at startup"
 *
 * @param WebPage $oP The current web page for the display
 *
 * @return void
 */
function DisplayWelcomePopup(WebPage $oP): void
{
	if (!Session::IsSet("welcome")) {
		$oWelcomePopupService = WelcomePopupService::GetInstance();
		$aProvidersMessagesData = $oWelcomePopupService->GetMessages();
		if (count($aProvidersMessagesData) > 0) {
			TwigHelper::RenderIntoPage($oP, APPROOT."/", "templates/application/welcome-popup/layout", [
				"aProvidersMessagesData" => $aProvidersMessagesData,
				"sEndpointAbsURIForAcknowledgeMessage" => Router::GetInstance()->GenerateUrl(WelcomePopupController::ROUTE_NAMESPACE . ".acknowledge_message"),
			]);
		}
		Session::Set("welcome", "ok"); // Try just once per session
	}
}

/**
 * Apply the 'next-action' to the given object or redirect to the page that prompts for additional information if needed
 *
 * @param $oP WebPage The page for the output
 * @param $oObj CMDBObject The object to process
 * @param $sNextAction string The code of the stimulus for the 'action' (i.e. Transition) to apply
 *
 * @throws \ApplicationException
 * @throws \CoreException
 * @throws \CoreUnexpectedValue
 */
function ApplyNextAction(Webpage $oP, CMDBObject $oObj, $sNextAction)
{
	// Here handle the apply stimulus
	$aTransitions = $oObj->EnumTransitions();
	if (!isset($aTransitions[$sNextAction]))
	{
		// Invalid stimulus
		throw new ApplicationException(Dict::Format('UI:Error:Invalid_Stimulus_On_Object_In_State', $sNextAction, $oObj->GetName(), $oObj->GetStateLabel()));
	}
	// Get the list of missing mandatory fields for the target state, considering only the changes from the previous form (i.e don't prompt twice)
	$aExpectedAttributes = $oObj->GetTransitionAttributes($sNextAction);

	if (count($aExpectedAttributes) == 0)
	{
		// If all the mandatory fields are already present, just apply the transition silently...
		if ($oObj->ApplyStimulus($sNextAction))
		{
			$oObj->DBUpdate();
		}
		else
		{
			throw new ApplicationException(Dict::S('UI:FailedToApplyStimuli'));
		}
		ReloadAndDisplay($oP, $oObj);
	}
	else
	{
		// redirect to the 'stimulus' action
		$oAppContext = new ApplicationContext();
//echo "<p>Missing Attributes <pre>".print_r($aExpectedAttributes, true)."</pre></p>\n";

		$oP->add_header('Location: '.utils::GetAbsoluteUrlAppRoot().'pages/UI.php?operation=stimulus&class='.get_class($oObj).'&stimulus='.$sNextAction.'&id='.$oObj->getKey().$oAppContext->GetForLink(true));
	}
}

function ReloadAndDisplay($oPage, $oObj, $sMessageId = '', $sMessage = '', $sSeverity = null)
{
	$oAppContext = new ApplicationContext();
	if ($sMessageId != '')
	{
		cmdbAbstractObject::SetSessionMessage(get_class($oObj), $oObj->GetKey(), $sMessageId, $sMessage, $sSeverity, 0, true /* must not exist */);
	}
	$oPage->add_header('Location: '.utils::GetAbsoluteUrlAppRoot().'pages/UI.php?operation=details&class='.get_class($oObj).'&id='.$oObj->getKey().$oAppContext->GetForLink(true));
}

/**
 * Display the session messages relative to the object identified by its "message key" (class::id)
 * @param string $sMessageKey
 * @param WebPage $oPage
 */
function DisplayMessages(string $sMessageKey, WebPage $oPage)
{
	$oPage->AddSessionMessages($sMessageKey);
}

/**
 * Helper to update the breadrumb for the current object
 * @param DBObject $oObj
 * @param WebPage $oPage
 * @throws \CoreException
 * @throws \DictExceptionMissingString
*/
function SetObjectBreadCrumbEntry(DBObject $oObj, WebPage $oPage)
{
	$sClass = get_class($oObj); // get the leaf class
	$sIcon = MetaModel::GetClassIcon($sClass, false);
	$sIconType = iTopWebPage::ENUM_BREADCRUMB_ENTRY_ICON_TYPE_IMAGE;
	if ($sIcon == '')
	{
		$sIcon = 'fas fa-cube';
		$sIconType = iTopWebPage::ENUM_BREADCRUMB_ENTRY_ICON_TYPE_CSS_CLASSES;
	}
	$oPage->SetBreadCrumbEntry("ui-details-$sClass-".$oObj->GetKey(), $oObj->Get('friendlyname'), MetaModel::GetName($sClass).': '.$oObj->Get('friendlyname'), '', $sIcon, $sIconType);
}

/**
 * Displays the result of a search request
 * @param $oP WebPage Web page for the output
 * @param $oFilter DBSearch The search of objects to display
 * @param $bSearchForm boolean Whether or not to display the search form at the top the page
 * @param $sBaseClass string The base class for the search (can be different from the actual class of the results)
 * @param $sFormat string The format to use for the output: csv or html
 * @param $bDoSearch bool True to display the search results below the search form
 * @param $bSearchFormOpen bool True to display the search form fully expanded (only if $bSearchForm of course)
 * @throws \CoreException
 * @throws \DictExceptionMissingString
 */
function DisplaySearchSet($oP, $oFilter, $bSearchForm = true, $sBaseClass = '', $sFormat = '', $bDoSearch = true, $bSearchFormOpen = true, $aParams = [])
{
	//search block
	$oBlockForm = null;
	if ($bSearchForm) {
		$aParams['open'] = $bSearchFormOpen;
		if (false === isset($aParams['table_id'])) {
			$aParams['table_id'] = 'result_1';
		}
		if (!empty($sBaseClass)) {
			$aParams['baseClass'] = $sBaseClass;
		}
		$oBlockForm = new DisplayBlock($oFilter, 'search', false /* Asynchronous */, $aParams);

		if (!$bDoSearch) {
			$oBlockForm->Display($oP, 0);
		}
	}
	if ($bDoSearch) {
		if (strtolower($sFormat) == 'csv') {
			$oBlock = new DisplayBlock($oFilter, 'csv', false);
			// Adjust the size of the Textarea containing the CSV to fit almost all the remaining space
			$oP->add_ready_script(" $('#1>textarea').height($('#1').parent().height() - $('#0').outerHeight() - 30).width( $('#1').parent().width() - 20);"); // adjust the size of the block
		} else {
			$oBlock = new DisplayBlock($oFilter, 'list', false);

			// Breadcrumb
			//$iCount = $oBlock->GetDisplayedCount();
			$sPageId = "ui-search-".$oFilter->GetClass();
			$sLabel = MetaModel::GetName($oFilter->GetClass());
			$oP->SetBreadCrumbEntry($sPageId, $sLabel, '', '', 'fas fa-search', iTopWebPage::ENUM_BREADCRUMB_ENTRY_ICON_TYPE_CSS_CLASSES);
		}
		if ($bSearchForm) {
			//add search block
			$sTableId = utils::ReadParam('_table_id_', null, false, 'raw_data');
			if ($sTableId == '') {
				$sTableId = 'result_1';
			}
			$aExtraParams['table_id'] = $sTableId;
			$aExtraParams['submit_on_load'] = false;
			$oUIBlockForm = $oBlockForm->GetDisplay($oP, 'search_1', $aExtraParams);
			//add result block
			$oUIBlock = $oBlock->GetDisplay($oP, $sTableId);
			$oUIBlock->AddCSSClasses(['display_block', 'sf_results_area']);
			$oUIBlock->AddDataAttribute('target', 'search_results');
			//$oUIBlockForm->AddSubBlock($oUIBlock);
			$oP->AddUiBlock($oUIBlockForm);
			$oUIBlockForm->AddSubBlock($oUIBlock);
		} else {
			$oBlock->Display($oP, 1);
		}
	}
}

/**
 * Displays a form (checkboxes) to select the objects for which to apply a given action
 * Only the objects for which the action is valid can be checked. By default all valid objects are checked
 *
 * @param WebPage $oP WebPage The page for output
 * @param \DBSearch $oFilter DBSearch The filter that defines the list of objects
 * @param string $sNextOperation string The next operation (code) to be executed when the form is submitted
 * @param ActionChecker $oChecker ActionChecker The helper class/instance used to check for which object the action is valid
 * @param array $aExtraFormParams
 * @param array $aDisplayParams
 *
 * @since 3.0.0 $aDisplayParams parameter
 *
 * @throws \ApplicationException
 * @throws \ArchivedObjectException
 * @throws \CoreException
 */
function DisplayMultipleSelectionForm(WebPage $oP, DBSearch $oFilter, string $sNextOperation, ActionChecker $oChecker, array $aExtraFormParams = [], array $aDisplayParams = [])
{
	$oAppContext = new ApplicationContext();
	$iBulkActionAllowed = $oChecker->IsAllowed();
	$aExtraParams = array('selection_type' => 'multiple', 'selection_mode' => true, 'display_limit' => false, 'menu' => false);
	if ($iBulkActionAllowed == UR_ALLOWED_DEPENDS) {
		$aExtraParams['selection_enabled'] = $oChecker->GetAllowedIDs();
	} else {
		if (UR_ALLOWED_NO) {
			throw new ApplicationException(Dict::Format('UI:ActionNotAllowed'));
		}
	}

	$oForm = new Form();
	$oForm->SetAction('./UI.php');
	$oForm->AddSubBlock(InputUIBlockFactory::MakeForHidden('operation', $sNextOperation));
	$oForm->AddSubBlock(InputUIBlockFactory::MakeForHidden('class', $oFilter->GetClass()));
	$oForm->AddSubBlock(InputUIBlockFactory::MakeForHidden('filter', utils::HtmlEntities($oFilter->Serialize())));
	$oForm->AddSubBlock(InputUIBlockFactory::MakeForHidden('transaction_id', utils::GetNewTransactionId()));
	foreach ($aExtraFormParams as $sName => $sValue) {
		$oForm->AddSubBlock(InputUIBlockFactory::MakeForHidden($sName, $sValue));
	}
	$oForm->AddSubBlock($oAppContext->GetForFormBlock());
	$oDisplayBlock = new DisplayBlock($oFilter, 'list', false);
	//by default all the elements are selected
	$aExtraParams['selectionMode'] = 'negative';
	if(array_key_exists('icon', $aDisplayParams) || array_key_exists('title', $aDisplayParams)){
		$aExtraParams['surround_with_panel'] = true;
		if(array_key_exists('icon', $aDisplayParams)){
			$aExtraParams['panel_icon'] = $aDisplayParams['icon'];
		}
		if(array_key_exists('title', $aDisplayParams)){
			$aExtraParams['panel_title'] = $aDisplayParams['title'];
		}
	}
	$oForm->AddSubBlock($oDisplayBlock->GetDisplay($oP, 1, $aExtraParams));
	$oToolbarButtons = ToolbarUIBlockFactory::MakeStandard(null);
	$oToolbarButtons->AddCSSClass('ibo-toolbar--button');
	$oForm->AddSubBlock($oToolbarButtons);
	$oToolbarButtons->AddSubBlock(ButtonUIBlockFactory::MakeForCancel(Dict::S('UI:Button:Cancel'), 'cancel')->SetOnClickJsCode('window.history.back()'));
	$oToolbarButtons->AddSubBlock(ButtonUIBlockFactory::MakeForPrimaryAction(Dict::S('UI:Button:Next'), 'next', Dict::S('UI:Button:Next'), true));

	$oP->AddUiBlock($oForm);
}

/**
 * @param $oP
 * @param $aResults
 * @param $sRelation
 * @param $sDirection
 * @param $oObj
 * for operation :  'swf_navigator'
 *
 * @throws \DictExceptionMissingString
 */
function DisplayNavigatorListTab($oP, $aResults, $sRelation, $sDirection, $oObj)
{
	$oP->SetCurrentTab('UI:RelationshipList');
	$oImpactedObject = UIContentBlockUIBlockFactory::MakeStandard("impacted_objects", ['ibo-is-visible']);
	$oP->AddSubBlock($oImpactedObject);
	$oImpactedObjectList = UIContentBlockUIBlockFactory::MakeStandard("impacted_objects_lists", ['ibo-is-visible']);
	$oImpactedObject->AddSubBlock($oImpactedObjectList);
	$oImpactedObjectList->AddSubBlock(UIContentBlockUIBlockFactory::MakeStandard("impacted_objects_lists_placeholder", ['ibo-is-visible']));
}

function DisplayNavigatorGroupTab($oP)
{
	$oP->SetCurrentTab('UI:RelationGroups');
	$oP->add("<div id=\"impacted_groups\">");
	$oP->add("<div id=\"impacted_groups_placeholder\"></div>");

	/*
	 * Content is rendered asynchronously via pages/ajax.render.php?operation=relation_groups
	*/
	$oP->add("</div>");
}

/***********************************************************************************
 *
 * Main user interface page starts here
 *
 ***********************************************************************************/
require_once('../approot.inc.php');
require_once(APPROOT.'/application/application.inc.php');
require_once(APPROOT.'/application/wizardhelper.class.inc.php');

require_once(APPROOT.'/application/startup.inc.php');
IssueLog::Trace('----- Request: '.utils::GetRequestUri(), LogChannels::WEB_REQUEST);
try
{
	$oKPI = new ExecutionKPI();
	$oKPI->ComputeAndReport('Data model loaded');

	$oKPI = new ExecutionKPI();

	require_once(APPROOT.'/application/loginwebpage.class.inc.php');
	$sLoginMessage = LoginWebPage::DoLogin(); // Check user rights and prompt if needed
	$oAppContext = new ApplicationContext();

	$oKPI->ComputeAndReport('User login');

	// First check if we can redirect the route to a dedicated controller
	$sRoute = utils::ReadParam('route', '', false, utils::ENUM_SANITIZATION_FILTER_ROUTE);
	$oRouter = Router::GetInstance();
	if ($oRouter->CanDispatchRoute($sRoute)) {
		$mResponse = $oRouter->DispatchRoute($sRoute);

		// If response isn't a WebPage, it is most likely that the output already occured, stop the script.
		// Note that this is done here and not directly in the Router::DispatchRoute() so custom endpoint can handle null responses their own way.
		if (false === ($mResponse instanceof WebPage)) {
			die();
		}

		// Response is a WebPage, let's handle it like legacy operations
		$oP = $mResponse;
	}
	// Otherwise, use legacy operation
	else {
		$operation = utils::ReadParam('operation', '', false, utils::ENUM_SANITIZATION_FILTER_OPERATION);
		$bPrintable = (utils::ReadParam('printable', 0) == '1');

		$oP = new iTopWebPage(Dict::S('UI:WelcomeToITop'), $bPrintable);
		$oP->SetMessage($sLoginMessage);

		// All the following actions use advanced forms that require more javascript to be loaded
		switch($operation)
		{
			case 'new': // Form to create a new object
			case 'form_for_modify_all': // Form to modify multiple objects (bulk modify)
			case 'bulk_stimulus': // For to apply a stimulus to multiple objects
			case 'stimulus': // Form displayed when applying a stimulus (state change)
			case 'apply_stimulus': // Form displayed when applying a stimulus (state change)
				foreach (ObjectController::EnumRequiredForModificationJsFilesRelPaths() as $sJsFileRelPath) {
					$oP->LinkScriptFromAppRoot($sJsFileRelPath);
				}
				break;
		}

		switch($operation)
		{
			///////////////////////////////////////////////////////////////////////////////////////////

			case 'details': // Details of an object
				$sClass = utils::ReadParam('class', '', false, 'class');

				if (empty($sClass)) {
					throw new ApplicationException(Dict::Format('UI:Error:1ParametersMissing', 'class'));
				}

				$id = utils::ReadParam('id', null);
				if (false === is_null($id)) {
					if (is_numeric($id)) {
						$oObj = MetaModel::GetObject($sClass, $id, false /* MustBeFound */);
					} else {
						$oObj = MetaModel::GetObjectByName($sClass, $id, false /* MustBeFound */);
					}
				} else {
					$sAttCode = utils::ReadParam('attcode', '', false, utils::ENUM_SANITIZATION_FILTER_FIELD_NAME);
					$sAttValue = utils::ReadParam('attvalue', '', false, utils::ENUM_SANITIZATION_FILTER_RAW_DATA);

					if ((strlen($sAttCode) === 0) || (strlen($sAttValue) === 0)) {
						throw new ApplicationException(Dict::Format('UI:Error:1ParametersMissing', 'id'));
					}

					$oObj = MetaModel::GetObjectByColumn($sClass, $sAttCode, $sAttValue, true);
				}

				if (is_null($oObj)) {
					// Check anyhow if there is a message for this object (like you've just created it)
					$sMessageKey = $sClass.'::'.$id;
					DisplayMessages($sMessageKey, $oP);
					$oP->set_title(Dict::S('UI:ErrorPageTitle'));

					// Attempt to load the object in archive mode
					utils::PushArchiveMode(true);
					if (is_numeric($id)) {
						$oObj = MetaModel::GetObject($sClass, $id, false /* MustBeFound */);
					}
					else
					{
						$oObj = MetaModel::GetObjectByName($sClass, $id, false /* MustBeFound */);
					}
					utils::PopArchiveMode();
					if (is_null($oObj))
					{
						$oP->P(Dict::S('UI:ObjectDoesNotExist'));
					}
					else
					{
						SetObjectBreadCrumbEntry($oObj, $oP);
						$oP->P(Dict::S('UI:ObjectArchived'));
					}
				}
				else
				{
					try
					{
						$oObj->Reload();
					}
					catch(Exception $e)
					{
						// Probably not allowed to see this instance of a derived class

						// Check anyhow if there is a message for this object (like you've just created it)
						$sMessageKey = $sClass.'::'.$id;
						DisplayMessages($sMessageKey, $oP);

						$oObj = null;
						$oP->set_title(Dict::S('UI:ErrorPageTitle'));
						$oP->P(Dict::S('UI:ObjectDoesNotExist'));
					}
					if (!is_null($oObj))
					{
						SetObjectBreadCrumbEntry($oObj, $oP);

						// The object could be listed, check if it is actually allowed to view it
						$oSet = CMDBObjectSet::FromObject($oObj);
						if (UserRights::IsActionAllowed($sClass, UR_ACTION_READ, $oSet) == UR_ALLOWED_NO) {
							throw new SecurityException('User not allowed to view this object', array('class' => $sClass, 'id' => $id));
						}

						$sClassLabel = MetaModel::GetName($sClass);
						$oP->set_title(Dict::Format('UI:DetailsPageTitle', $oObj->GetRawName(), $sClassLabel)); // Set title will take care of the encoding
						$oP->SetContentLayout(PageContentFactory::MakeForObjectDetails($oObj, $oP->IsPrintableVersion() ? cmdbAbstractObject::ENUM_DISPLAY_MODE_PRINT : cmdbAbstractObject::ENUM_DISPLAY_MODE_VIEW));
						$oObj->DisplayDetails($oP);
					}
				}
			break;

			case 'release_lock_and_details':
	        $oP->DisableBreadCrumb();

	        // Retrieve object
	        $sClass = utils::ReadParam('class', '', false, 'class');
			$id = utils::ReadParam('id', '');
			$oObj = MetaModel::GetObject($sClass, $id);

			// Retrieve ownership token
			$sToken = utils::ReadParam('token', '');
			if ($sToken != '')
			{
				iTopOwnershipLock::ReleaseLock($sClass, $id, $sToken);
			}

			$oP->SetContentLayout(PageContentFactory::MakeForObjectDetails($oObj, cmdbAbstractObject::ENUM_DISPLAY_MODE_VIEW));
			cmdbAbstractObject::ReloadAndDisplay($oP, $oObj, array('operation' => 'details'));
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'search_oql': // OQL query
				$oSearchContext = new ContextTag(ContextTag::TAG_OBJECT_SEARCH);
				$sOQLClass = utils::ReadParam('oql_class', '', false, 'class');
				$sBaseClass = utils::ReadParam('base_class', $sOQLClass, false, 'class');
				$sOQLClause = utils::ReadParam('oql_clause', '', false, 'raw_data');
				$sFormat = utils::ReadParam('format', '');
				$bSearchForm = utils::ReadParam('search_form', true);
				$sTitle = utils::ReadParam('title', 'UI:SearchResultsPageTitle');
				if (empty($sOQLClass)) {
					throw new ApplicationException(Dict::Format('UI:Error:1ParametersMissing', 'oql_class'));
				}
				$oP->set_title(Dict::S($sTitle));
				$oP->add('<h1>'.Dict::S($sTitle).'</h1>');
				$sOQL = "SELECT $sOQLClass $sOQLClause";
				try {
					$oFilter = DBObjectSearch::FromOQL($sOQL);
					DisplaySearchSet($oP, $oFilter, $bSearchForm, $sBaseClass, $sFormat);
				}
				catch(CoreException $e) {
					$oFilter = new DBObjectSearch($sOQLClass);
					$oSet = new DBObjectSet($oFilter);
					if ($bSearchForm) {
						$oBlock = new DisplayBlock($oFilter, 'search', false);
						$oBlock->Display($oP, 0, array('table_id' => 'search-widget-result-outer'));
					}
					$oP->add('<div id="search-widget-result-outer"><p><b>'.Dict::Format('UI:Error:IncorrectOQLQuery_Message', $e->getHtmlDesc()).'</b></p></div>');
				}
				catch(Exception $e) {
					$oP->P('<b>'.Dict::Format('UI:Error:AnErrorOccuredWhileRunningTheQuery_Message', $e->getMessage()).'</b>');
				}
				break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'search_form': // Search form
				$oSearchContext = new ContextTag(ContextTag::TAG_OBJECT_SEARCH);
				$sClass = utils::ReadParam('class', '', false, 'class');
				$sFormat = utils::ReadParam('format', 'html');
				$bSearchForm = utils::ReadParam('search_form', true);
				$bDoSearch = utils::ReadParam('do_search', true);
				if (empty($sClass)) {
					throw new ApplicationException(Dict::Format('UI:Error:1ParametersMissing', 'class'));
				}
				$oP->set_title(Dict::S('UI:SearchResultsPageTitle'));
				$oFilter =  new DBObjectSearch($sClass);
				DisplaySearchSet($oP, $oFilter, $bSearchForm, '' /* sBaseClass */, $sFormat, $bDoSearch, true /* Search Form Expanded */);
				break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'search': // Serialized DBSearch
				$oSearchContext = new ContextTag(ContextTag::TAG_OBJECT_SEARCH);
				$sFilter = utils::ReadParam('filter', '', false, 'raw_data');
				$sFormat = utils::ReadParam('format', '');
				$bSearchForm = utils::ReadParam('search_form', true);
				if (empty($sFilter))
				{
					throw new ApplicationException(Dict::Format('UI:Error:1ParametersMissing', 'filter'));
				}
				$oP->set_title(Dict::S('UI:SearchResultsPageTitle'));
				$oFilter = DBSearch::unserialize($sFilter); // TO DO : check that the filter is valid
				$oFilter->UpdateContextFromUser();

				//FIXME Params won't work as expected :(
				// During the ajax call fetching the datatable data, the URL is rewritten and the info are lost, and we are getting a worse result :(
//				$sParams = utils::ReadParam('aParams', '{}', false, \utils::ENUM_SANITIZATION_FILTER_RAW_DATA);
//				$aParams = json_decode($sParams, true);

				DisplaySearchSet($oP, $oFilter, $bSearchForm, '' /* sBaseClass */, $sFormat); //, true, true, $aParams
				break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'full_text': // Global "google-like" search
				$oP->DisableBreadCrumb();
				$sQuery = trim(utils::ReadParam('text', '', false, 'raw_data'));
				$iTune = utils::ReadParam('tune', 0);
				if (empty($sQuery))
				{
					$oP->p(Dict::S('UI:Search:NoSearch'));
				}
				else
				{
					$iErrors = 0;
					$sFullText = $sQuery;

					// Check if a class name/label is supplied to limit the search
					$sClassName = '';
					if (preg_match('/^([^\"]+):(.+)$/', $sFullText, $aMatches))
					{
						$sClassName = $aMatches[1];
						if (MetaModel::IsValidClass($sClassName))
						{
							$sFullText = trim($aMatches[2]);
						}
						elseif ($sClassName = MetaModel::GetClassFromLabel($sClassName, false /* => not case sensitive */))
						{
							$sFullText = trim($aMatches[2]);
						}
					}
					if (preg_match('/^"(.*)"$/', $sFullText, $aMatches))
					{
						// The text is surrounded by double-quotes, remove the quotes and treat it as one single expression
						$aFullTextNeedles = array($aMatches[1]);
					}
					else
					{
						// Split the text on the blanks and treat this as a search for <word1> AND <word2> AND <word3>
						$aExplodedFullTextNeedles = explode(' ', $sFullText);
						$aFullTextNeedles = [];
						foreach ($aExplodedFullTextNeedles as $sValue) {
							if (strlen($sValue) > 0) {
								$aFullTextNeedles[] = $sValue;
							}
						}
					}

					// Save search to history
					// - Prepare icon
					$sQueryIconUrl = null;
					if(!empty($sClassName)) {
						$sQueryIconUrl = MetaModel::GetClassIcon($sClassName, false);
					}
					// - Prepare label
					$sQueryLabel = null;
					if ($sQuery !== $sFullText) {
						$sQueryLabel = $sFullText;
					}
					GlobalSearchHelper::AddQueryToHistory(utils::EscapeHtml($sQuery), $sQueryIconUrl, $sQueryLabel);
					$oP->SetBlockParam('ibo-global-search.sQuery', utils::EscapeHtml($sQuery));

					// Check the needle length
					$iMinLenth = MetaModel::GetConfig()->Get('full_text_needle_min');
					foreach ($aFullTextNeedles as $sNeedle) {
						if (strlen($sNeedle) < $iMinLenth) {
							$oP->p(Dict::Format('UI:Search:NeedleTooShort', $sNeedle, $iMinLenth));
							$key = array_search($sNeedle, $aFullTextNeedles);
							if ($key !== false)
							{
								unset($aFullTextNeedles[$key]);
							}
						}
					}
					if(empty($aFullTextNeedles))
					{
						$oP->p(Dict::S('UI:Search:NoSearch'));
						break;
					}
					$sFullText = implode(' ', $aFullTextNeedles);

					// Sanity check of the accelerators
					/** @var array $aAccelerators */
					$aAccelerators = MetaModel::GetConfig()->Get('full_text_accelerators');
					foreach ($aAccelerators as $sClass => $aAccelerator)
					{
						try
						{
							$bSkip = array_key_exists('skip', $aAccelerator) ? $aAccelerator['skip'] : false;
							if (!$bSkip)
							{
								$oSearch = DBObjectSearch::FromOQL($aAccelerator['query']);
								if ($sClass != $oSearch->GetClass())
								{
									$oP->p("Full text accelerator for class '$sClass': searched class mismatch (".$oSearch->GetClass().")");
									$iErrors++;
								}
							}
						}
						catch (OqlException $e)
						{
							$oP->p("Full text accelerator for class '$sClass': ".$e->getHtmlDesc());
							$iErrors++;
						}
					}

					if ($iErrors == 0)
					{
						$oP->set_title(Dict::S('UI:SearchResultsPageTitle'));
						$sPageId = "ui-global-search";
						$sLabel = Dict::S('UI:SearchResultsTitle');
						$sDescription = Dict::S('UI:SearchResultsTitle+');
						$oP->SetBreadCrumbEntry($sPageId, $sLabel, $sDescription, '', 'fas fa-search', iTopWebPage::ENUM_BREADCRUMB_ENTRY_ICON_TYPE_CSS_CLASSES);
						$oP->add("<div style=\"padding: 10px;\">\n");
						$oP->add("<div class=\"header_message\" id=\"full_text_progress\" style=\"position: fixed; background-color: #cccccc; opacity: 0.7; padding: 1.5em;\">\n");
						$oP->add('<img id="full_text_indicator" src="' . utils::GetAbsoluteUrlAppRoot() . 'images/indicator.gif">&nbsp;<span style="padding: 1.5em;">'.Dict::Format('UI:Search:Ongoing', utils::EscapeHtml($sFullText)).'</span>');
						$oP->add("</div>\n");
						$oP->add("<div id=\"full_text_results\">\n");
						$oP->add("<div id=\"full_text_progress_placeholder\" style=\"padding: 1.5em;\">&nbsp;</div>\n");
						$oP->add("<h2>".Dict::Format('UI:FullTextSearchTitle_Text', utils::EscapeHtml($sFullText))."</h2>");
						$oP->add("</div>\n");
						$oP->add("</div>\n");
						$sJSClass = addslashes($sClassName ?? '');
						$sJSNeedles = json_encode($aFullTextNeedles);
						$oP->add_ready_script(
							<<<EOF
							var oParams = {operation: 'full_text_search', position: 0, 'classname': '$sJSClass', needles: $sJSNeedles, tune: $iTune};
							$.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php', oParams, function(data) {
								$('#full_text_results').append(data);
							});
	EOF
						);
						if ($iTune > 0)
						{
							$oP->add_script("var oTimeStatistics = {};");
						}
					}
				}
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			/** @deprecated 3.1.0 Use the "object.modify" route instead */
			// Kept for backward compatibility with notification URLs, don't remove
			case 'modify': // Legacy operation
				$oController = new ObjectController();
				$oP = $oController->OperationModify();
				break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'select_for_modify_all': // Select the list of objects to be modified (bulk modify)
				UI::OperationSelectForModifyAll($oP);
				break;
			///////////////////////////////////////////////////////////////////////////////////////////

			case 'form_for_modify_all': // Form to modify multiple objects (bulk modify)
				UI::OperationFormForModifyAll($oP, $oAppContext);
				break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'preview_or_modify_all': // Preview or apply bulk modify
				UI::OperationPreviewOrModifyAll($oP, $oAppContext);
				break;

			///////////////////////////////////////////////////////////////////////////////////////////

			/** @deprecated 3.1.0 Use the "object.new" route instead */
			// Kept for backward compatibility
			case 'new': // Form to create a new object
				$oController = new ObjectController();
				$oP = $oController->OperationNew();
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'apply_modify': // Applying the modifications to an existing object
				$oController = new ObjectController();
				$oP = $oController->OperationApplyModify();
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'select_for_deletion': // Select multiple objects for deletion
				$oP->DisableBreadCrumb();
				$sFilter = utils::ReadParam('filter', '', false, 'raw_data');
				if (empty($sFilter))
				{
					throw new ApplicationException(Dict::Format('UI:Error:1ParametersMissing', 'filter'));
				}
				$oP->set_title(Dict::S('UI:BulkDeletePageTitle'));

				$oFilter = DBSearch::unserialize($sFilter); // TO DO : check that the filter is valid
				$oFilter->UpdateContextFromUser();

				$sClass = $oFilter->GetClass();

				$aDisplayParams = [
					'icon' => MetaModel::GetClassIcon($sClass, false),
					'title' => Dict::S('UI:BulkDeleteTitle'),
				];
				$oChecker = new ActionChecker($oFilter, UR_ACTION_BULK_DELETE);
				DisplayMultipleSelectionForm($oP, $oFilter, 'bulk_delete', $oChecker, [], $aDisplayParams);
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'bulk_delete_confirmed': // Confirm bulk deletion of objects
				$oP->DisableBreadCrumb();
				$sTransactionId = utils::ReadPostedParam('transaction_id', '', 'transaction_id');
				if (!utils::IsTransactionValid($sTransactionId))
				{
					$sUser = UserRights::GetUser();
					$sClass = utils::ReadParam('class', '', false, 'class');
					IssueLog::Error("UI.php '$operation' : invalid transaction_id ! data: user='$sUser', class='$sClass'");
					throw new ApplicationException(Dict::S('UI:Error:ObjectsAlreadyDeleted'));
				}
			// Fall through

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'delete':
			case 'bulk_delete': // Actual bulk deletion (if confirmed)
				$oP->DisableBreadCrumb();
				$sClass = utils::ReadParam('class', '', false, 'class');
				$sClassLabel = MetaModel::GetName($sClass);
				$aObjects = array();
				if ($operation == 'delete')
				{
					// Single object
					$id = utils::ReadParam('id', '');
					$oObj = MetaModel::GetObject($sClass, $id);
					$aObjects[] = $oObj;
					if (!UserRights::IsActionAllowed($sClass, UR_ACTION_DELETE, DBObjectSet::FromObject($oObj)))
					{
						throw new SecurityException(Dict::Format('UI:Error:DeleteNotAllowedOn_Class', $sClassLabel));
					}
				}
				else
				{
					// Several objects
					$sFilter = utils::ReadPostedParam('filter', '', 'raw_data');
					$oFullSetFilter = DBObjectSearch::unserialize($sFilter);
					// Add user filter
					$oFullSetFilter->UpdateContextFromUser();
					$aSelectObject = utils::ReadMultipleSelection($oFullSetFilter);
					if ( empty($sClass) || empty($aSelectObject)) // TO DO: check that the class name is valid !
					{
						throw new ApplicationException(Dict::Format('UI:Error:2ParametersMissing', 'class', 'selectObject[]'));
					}
					foreach($aSelectObject as $iId)
					{
						$aObjects[] = MetaModel::GetObject($sClass, $iId);
					}
					if (count($aObjects) == 1)
					{
						if (!UserRights::IsActionAllowed($sClass, UR_ACTION_DELETE, DBObjectSet::FromArray($sClass, $aObjects)))
						{
							throw new SecurityException(Dict::Format('UI:Error:BulkDeleteNotAllowedOn_Class', $sClassLabel));
						}
					}
					else
					{
						if (!UserRights::IsActionAllowed($sClass, UR_ACTION_BULK_DELETE, DBObjectSet::FromArray($sClass, $aObjects)))
						{
							throw new SecurityException(Dict::Format('UI:Error:BulkDeleteNotAllowedOn_Class', $sClassLabel));
						}
						$oP->set_title(Dict::S('UI:BulkDeletePageTitle'));
					}
				}
				// Go for the common part... (delete single, delete bulk, delete confirmed)
				cmdbAbstractObject::DeleteObjects($oP, $sClass, $aObjects, ($operation != 'bulk_delete_confirmed'), 'bulk_delete_confirmed');
				break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'apply_new': // Creation of a new object

				$oController = new ObjectController();
				$oP = $oController->OperationApplyNew();
				break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'select_bulk_stimulus': // Form displayed when applying a stimulus to many objects
			$oP->DisableBreadCrumb();
			$sFilter = utils::ReadParam('filter', '', false, 'raw_data');
			$sStimulus = utils::ReadParam('stimulus', '');
			$sState = utils::ReadParam('state', '');
			if (empty($sFilter) || empty($sStimulus) || empty($sState))
			{
				throw new ApplicationException(Dict::Format('UI:Error:3ParametersMissing', 'filter', 'stimulus', 'state'));
			}
			$oFilter = DBObjectSearch::unserialize($sFilter);
			$oFilter->UpdateContextFromUser();
			$sClass = $oFilter->GetClass();
			$aStimuli = MetaModel::EnumStimuli($sClass);
			$sActionLabel = $aStimuli[$sStimulus]->GetLabel();
			$sActionDetails = $aStimuli[$sStimulus]->GetDescription();
			$oP->set_title($sActionLabel);
			$sClass = $oFilter->GetClass();

			$aDisplayParams = [
				'icon' => MetaModel::GetClassIcon($sClass, false),
				'title' => $sActionLabel,
			];
			$oChecker = new StimulusChecker($oFilter, $sState, $sStimulus);
			$aExtraFormParams = array('stimulus' => $sStimulus, 'state' => $sState);
			DisplayMultipleSelectionForm($oP, $oFilter, 'bulk_stimulus', $oChecker, $aExtraFormParams, $aDisplayParams);
			break;

			case 'bulk_stimulus':
			$oP->DisableBreadCrumb();
			$sFilter = utils::ReadParam('filter', '', false, 'raw_data');
			$sStimulus = utils::ReadParam('stimulus', '');
			$sState = utils::ReadParam('state', '');
			if (empty($sFilter) || empty($sStimulus) || empty($sState))
			{
				throw new ApplicationException(Dict::Format('UI:Error:3ParametersMissing', 'filter', 'stimulus', 'state'));
			}
			$oFilter = DBObjectSearch::unserialize($sFilter);
			// Add user filter
			$oFilter->UpdateContextFromUser();
			$sClass = $oFilter->GetClass();
			$aSelectObject = utils::ReadMultipleSelection($oFilter);
			if (count($aSelectObject) == 0)
			{
				// Nothing to do, no object was selected !
				throw new ApplicationException(Dict::S('UI:BulkAction:NoObjectSelected'));
			}
			else
			{
				$aTransitions = MetaModel::EnumTransitions($sClass, $sState);
				$aStimuli = MetaModel::EnumStimuli($sClass);

				$sActionLabel = $aStimuli[$sStimulus]->GetLabel();
				$sActionDetails = $aStimuli[$sStimulus]->GetDescription();
				$sTargetState = $aTransitions[$sStimulus]['target_state'];
				$aStates = MetaModel::EnumStates($sClass);
				$aTargetStateDef = $aStates[$sTargetState];

				$oP->set_title(Dict::Format('UI:StimulusModify_N_ObjectsOf_Class', $sActionLabel, count($aSelectObject), $sClass));
				$oP->add(<<<HTML
		<!-- Beginning of objects-transition -->
		<div class="object-transition" data-object-class="$sClass" data-object-current-state="$sState" data-object-target-state="$sTargetState">
	HTML
				);
				$oP->AddUiBlock(TitleUIBlockFactory::MakeForPage(Dict::Format('UI:StimulusModify_N_ObjectsOf_Class', $sActionLabel, count($aSelectObject), $sClass)));
				if (!empty($sActionDetails)) {
					$oP->AddUiBlock(TitleUIBlockFactory::MakeForPage($sActionDetails));
				}



				$aExpectedAttributes = MetaModel::GetTransitionAttributes($sClass, $sStimulus, $sState);
				$aDetails = array();
				$sFormId = 'apply_stimulus';
				$sFormPrefix = $sFormId.'_';
				$iFieldIndex = 0;
				$aFieldsMap = array();
				$aValues = array();
				$aObjects = array();
				foreach($aSelectObject as $iId)
				{
					$aObjects[] = MetaModel::GetObject($sClass, $iId);
				}
				$oSet = DBObjectSet::FromArray($sClass, $aObjects);
				$oObj = $oSet->ComputeCommonObject($aValues);
				$sStateAttCode = MetaModel::GetStateAttributeCode($sClass);
				$oObj->Set($sStateAttCode,$sTargetState);
				$sReadyScript = '';
				foreach($aExpectedAttributes as $sAttCode => $iExpectCode)
				{
					$sFieldInputId = $sFormPrefix.$sAttCode;
					// Prompt for an attribute if
					// - the attribute must be changed or must be displayed to the user for confirmation
					// - or the field is mandatory and currently empty
					if ( ($iExpectCode & (OPT_ATT_MUSTCHANGE | OPT_ATT_MUSTPROMPT)) ||
						 (($iExpectCode & OPT_ATT_MANDATORY) && ($oObj->Get($sAttCode) == '')) )
					{
						$aAttributesDef = MetaModel::ListAttributeDefs($sClass);
						$oAttDef = MetaModel::GetAttributeDef($sClass, $sAttCode);
						$aPrerequisites = MetaModel::GetPrerequisiteAttributes($sClass, $sAttCode); // List of attributes that are needed for the current one
						if (count($aPrerequisites) > 0)
						{
							// When 'enabling' a field, all its prerequisites must be enabled too
							$sFieldList = "['{$sFormPrefix}".implode("','{$sFormPrefix}", $aPrerequisites)."']";
							$oP->add_ready_script("$('#enable_{$sFieldInputId}').on('change', function(evt, sFormId) { return PropagateCheckBox( this.checked, $sFieldList, true); } );\n");
						}
						$aDependents = MetaModel::GetDependentAttributes($sClass, $sAttCode); // List of attributes that are needed for the current one
						if (count($aDependents) > 0)
						{
							// When 'disabling' a field, all its dependent fields must be disabled too
							$sFieldList = "['{$sFormPrefix}".implode("','{$sFormPrefix}", $aDependents)."']";
							$oP->add_ready_script("$('#enable_{$sFieldInputId}').on('change', function(evt, sFormId) { return PropagateCheckBox( this.checked, $sFieldList, false); } );\n");
						}
						$aArgs = array('this' => $oObj);
						$sHTMLValue = cmdbAbstractObject::GetFormElementForField($oP, $sClass, $sAttCode, $oAttDef, $oObj->Get($sAttCode), $oObj->GetEditValue($sAttCode), $sFieldInputId, '', $iExpectCode, $aArgs);
						$sComments = '<input type="checkbox" class="ibo-field--enable-bulk--checkbox" checked id="enable_'.$sFieldInputId.'"  onClick="ToggleField(this.checked, \''.$sFieldInputId.'\')"/>';
						if (!isset($aValues[$sAttCode]))
						{
							$aValues[$sAttCode] = array();
						}
						if (count($aValues[$sAttCode]) == 1)
						{
							$sComments = '<div class="mono_value ibo-field--enable-bulk ibo-pill ibo-is-success">1'.$sComments.'</div>';
						}
						else
						{
							// Non-homogenous value
							$iMaxCount = 5;
							$sTip = "<p><b>".Dict::Format('UI:BulkModify_Count_DistinctValues', count($aValues[$sAttCode]))."</b><ul>";
							$index = 0;
							foreach($aValues[$sAttCode] as $sCurrValue => $aVal)
							{
								$sDisplayValue = empty($aVal['display']) ? '<i>'.Dict::S('Enum:Undefined').'</i>' : str_replace(array("\n", "\r"), " ", $aVal['display']);
								$sTip .= "<li>".Dict::Format('UI:BulkModify:Value_Exists_N_Times', $sDisplayValue, $aVal['count'])."</li>";
								$index++;
								if ($iMaxCount == $index)
								{
									$sTip .= "<li>".Dict::Format('UI:BulkModify:N_MoreValues', count($aValues[$sAttCode]) - $iMaxCount)."</li>";
									break;
								}
							}
							$sTip .= "</ul></p>";
							$sTip = utils::HtmlEntities($sTip);
							$sComments = '<div class="multi_values ibo-field--enable-bulk ibo-pill ibo-is-failure" id="multi_values_'.$sFieldInputId.'"  data-tooltip-content="'.$sTip.'" data-tooltip-html-enabled="true">'.count($aValues[$sAttCode]).$sComments.'</div>';
						}
						$aDetails[] = array('label' => '<span>'.$oAttDef->GetLabel().'</span>', 'value' => "<span id=\"field_$sFieldInputId\">$sHTMLValue</span>", 'comments' => $sComments);
						$aFieldsMap[$sAttCode] = $sFieldInputId;
						$iFieldIndex++;
					}
				}
				$oFormContainer = new UIContentBlock(null, ['ibo-wizard-container']);
				$oP->AddUiBlock($oFormContainer);
				$oForm = new Combodo\iTop\Application\UI\Base\Component\Form\Form($sFormId);
				$oFormContainer->AddSubBlock($oForm);
				$oForm->SetOnSubmitJsCode("return OnSubmit('{$sFormId}');")
					->AddSubBlock(InputUIBlockFactory::MakeForHidden('class', $sClass))
					->AddSubBlock(InputUIBlockFactory::MakeForHidden('operation', 'bulk_apply_stimulus'))
					->AddSubBlock(InputUIBlockFactory::MakeForHidden('stimulus', $sStimulus))
					->AddSubBlock(InputUIBlockFactory::MakeForHidden('preview_mode', 1))
					->AddSubBlock(InputUIBlockFactory::MakeForHidden('filter', utils::HtmlEntities($sFilter)))
					->AddSubBlock(InputUIBlockFactory::MakeForHidden('state', $sState))
					->AddSubBlock(InputUIBlockFactory::MakeForHidden('selectObject', implode(',',$aSelectObject)))
					->AddSubBlock(InputUIBlockFactory::MakeForHidden('transaction_id', utils::GetNewTransactionId()));

				$aContextInputBlocks = $oAppContext->GetForUIForm();
				foreach ($aContextInputBlocks as $oContextInputBlock){
					$oForm->AddSubBlock($oContextInputBlock);
				}
				// Note: Remove the table if we want fields to occupy the whole width of the container
				$oForm->AddHtml('<table><tr><td>');
				$oForm->AddHtml($oP->GetDetails($aDetails));
				$oForm->AddHtml('</td></tr></table>');

				$sURL = "./UI.php?operation=search&filter=".urlencode($sFilter).$oAppContext->GetForLink(true);
				$oCancelButton = ButtonUIBlockFactory::MakeForCancel(Dict::S('UI:Button:Cancel'), 'cancel', 'cancel');
				$oCancelButton->SetOnClickJsCode("window.location.href='$sURL'");
				$oForm->AddSubBlock($oCancelButton);

				$oSubmitButton = ButtonUIBlockFactory::MakeForPrimaryAction($sActionLabel, 'submit', 'submit', true);
				$oForm->AddSubBlock($oSubmitButton);

				$oP->add(<<<HTML
		<!-- End of object-transition -->
		</div>
	HTML
				);

				$iFieldsCount = count($aFieldsMap);
				$sJsonFieldsMap = json_encode($aFieldsMap);

				$oP->add_script(
	<<<EOF
				// Initializes the object once at the beginning of the page...
				var oWizardHelper = new WizardHelper('$sClass', '', '$sTargetState', '$sState', '$sStimulus');
				oWizardHelper.SetFieldsMap($sJsonFieldsMap);
				oWizardHelper.SetFieldsCount($iFieldsCount);
	EOF
	);
				$oP->add_ready_script(
	<<<EOF
				// Starts the validation when the page is ready
				CheckFields('{$sFormId}', false);
				$sReadyScript
	EOF
	);
			}
			break;

			case 'bulk_apply_stimulus':
			$oP->DisableBreadCrumb();
			$bPreviewMode = utils::ReadPostedParam('preview_mode', false);
			$sFilter = utils::ReadPostedParam('filter', '', 'raw_data');
			$sStimulus = utils::ReadPostedParam('stimulus', '');
			$sState = utils::ReadPostedParam('state', '');
			$sSelectObject = utils::ReadPostedParam('selectObject', '', 'raw_data');
			$aSelectObject = explode(',', $sSelectObject);

			if (empty($sFilter) || empty($sStimulus) || empty($sState))
			{
				throw new ApplicationException(Dict::Format('UI:Error:3ParametersMissing', 'filter', 'stimulus', 'state'));
			}
				$sTransactionId = utils::ReadPostedParam('transaction_id', '', 'transaction_id');
			if (!utils::IsTransactionValid($sTransactionId))
			{
				$sUser = UserRights::GetUser();
				IssueLog::Error("UI.php '$operation' : invalid transaction_id ! data: user='$sUser'");
				$oP->p(Dict::S('UI:Error:ObjectAlreadyUpdated'));
			}
			else
			{
				// For archiving the modification
				$oFilter = DBObjectSearch::unserialize($sFilter);
				// Add user filter
				$oFilter->UpdateContextFromUser();
				$sClass = $oFilter->GetClass();
				$aObjects = array();
				foreach($aSelectObject as $iId)
				{
					$aObjects[] = MetaModel::GetObject($sClass, $iId);
				}

				$aTransitions = MetaModel::EnumTransitions($sClass, $sState);
				$aStimuli = MetaModel::EnumStimuli($sClass);

				$sActionLabel = $aStimuli[$sStimulus]->GetLabel();
				$sActionDetails = $aStimuli[$sStimulus]->GetDescription();

				$oP->set_title(Dict::Format('UI:StimulusModify_N_ObjectsOf_Class', $sActionLabel, count($aObjects), $sClass));

				$oSet = DBObjectSet::FromArray($sClass, $aObjects);

				// For reporting
				$aHeaders = array(
					'object' => array('label' => MetaModel::GetName($sClass), 'description' => Dict::S('UI:ModifiedObject')),
					'status' => array('label' => Dict::S('UI:BulkModifyStatus'), 'description' => Dict::S('UI:BulkModifyStatus+')),
					'errors' => array('label' => Dict::S('UI:BulkModifyErrors'), 'description' => Dict::S('UI:BulkModifyErrors+')),
				);
				$aRows = array();
				while ($oObj = $oSet->Fetch())
				{
					$sError = Dict::S('UI:BulkModifyStatusOk');
					try
					{
						$aTransitions = $oObj->EnumTransitions();
						$aStimuli = MetaModel::EnumStimuli($sClass);
						if (!isset($aTransitions[$sStimulus]))
						{
							throw new ApplicationException(Dict::Format('UI:Error:Invalid_Stimulus_On_Object_In_State', $sStimulus, $oObj->GetName(), $oObj->GetStateLabel()));
						}
						else
						{
							$sActionLabel = $aStimuli[$sStimulus]->GetLabel();
							$sActionDetails = $aStimuli[$sStimulus]->GetDescription();
							$sTargetState = $aTransitions[$sStimulus]['target_state'];
							$aExpectedAttributes = $oObj->GetTransitionAttributes($sStimulus /* cureent state */);
							$aDetails = array();
							$aErrors = array();
							foreach($aExpectedAttributes as $sAttCode => $iExpectCode)
							{
								$iFlags = $oObj->GetTransitionFlags($sAttCode, $sStimulus);
								if (($iExpectCode & (OPT_ATT_MUSTCHANGE|OPT_ATT_MUSTPROMPT)) || ($oObj->Get($sAttCode) == '') )
								{
									$paramValue = utils::ReadPostedParam("attr_$sAttCode", '', 'raw_data');
									if ( ($iFlags & OPT_ATT_SLAVE) && ($paramValue != $oObj->Get($sAttCode)) )
									{
										$oAttDef = MetaModel::GetAttributeDef($sClass, $sAttCode);
										$aErrors[] = Dict::Format('UI:AttemptingToSetASlaveAttribute_Name', $oAttDef->GetLabel(), $sAttCode);
										unset($aExpectedAttributes[$sAttCode]);
									}
								}
							}

							$oObj->UpdateObjectFromPostedForm('', array_keys($aExpectedAttributes), $aExpectedAttributes);

							if (count($aErrors) == 0)
							{
								if ($oObj->ApplyStimulus($sStimulus))
								{
									list($bResult, $aErrors) = $oObj->CheckToWrite();
									$sStatus = $bResult ? Dict::S('UI:BulkModifyStatusModified') : Dict::S('UI:BulkModifyStatusSkipped');
									if ($bResult)
									{
										$oObj->DBUpdate();
									}
									else
									{
										$aErrorsToDisplay = array_map(function($sError) {
											return utils::HtmlEntities($sError);
										}, $aErrors);
										$sError = '<p>'.implode('</p></p>',$aErrorsToDisplay)."</p>\n";
									}
								}
								else
								{
									$sStatus = Dict::S('UI:BulkModifyStatusSkipped');
									$sError = '<p>'.Dict::S('UI:FailedToApplyStimuli')."<p>\n";
								}
							}
							else
							{
								$sStatus = Dict::S('UI:BulkModifyStatusSkipped');
								$sError = '<p>'.implode('</p></p>',$aErrors)."</p>\n";
							}
						}
					}
					catch(Exception $e)
					{
						$sError = $e->getMessage();
						$sStatus = Dict::S('UI:BulkModifyStatusSkipped');
					}
					$aRows[] = array(
						'object' => $oObj->GetHyperlink(),
						'status' => $sStatus,
						'errors' => $sError,
					);
				}
				$oBlock = PanelUIBlockFactory::MakeForClass($sClass, Dict::Format('UI:StimulusModify_N_ObjectsOf_Class', $sActionLabel, count($aObjects), $sClass));
					$oBlock->SetIcon(MetaModel::GetClassIcon($sClass, false));


				$oDataTable = DataTableUIBlockFactory::MakeForStaticData('', $aHeaders,$aRows);
				$oBlock->AddSubBlock($oDataTable);
				$oP->AddUiBlock($oBlock);

				// Back to the list
				$sURL = "./UI.php?operation=search&filter=".urlencode($sFilter).$oAppContext->GetForLink(true);
				$oSubmitButton = ButtonUIBlockFactory::MakeForSecondaryAction(Dict::S('UI:Button:Done'), 'submit', 'submit', true);
				$oSubmitButton->SetOnClickJsCode("window.location.href='$sURL'");
				$oToolbarButtons = ToolbarUIBlockFactory::MakeStandard(null);
				$oToolbarButtons->AddCSSClass('ibo-toolbar--button');
				$oToolbarButtons->AddSubBlock($oSubmitButton);
				$oP->AddSubBlock($oToolbarButtons);
			}
			break;

			case 'stimulus': // Form displayed when applying a stimulus (state change)
			$oP->DisableBreadCrumb();
			$sClass = utils::ReadParam('class', '', false, 'class');
			$id = utils::ReadParam('id', '');
			$sStimulus = utils::ReadParam('stimulus', '');
			if ( empty($sClass) || empty($id) ||  empty($sStimulus) ) // TO DO: check that the class name is valid !
			{
				throw new ApplicationException(Dict::Format('UI:Error:3ParametersMissing', 'class', 'id', 'stimulus'));
			}
			$aStimuli = MetaModel::EnumStimuli($sClass);
			if ((get_class($aStimuli[$sStimulus]) !== 'StimulusUserAction') || (UserRights::IsStimulusAllowed($sClass, $sStimulus) === UR_ALLOWED_NO))
			{
				$sUser = UserRights::GetUser();
				IssueLog::Error("UI.php '$operation' : Stimulus '$sStimulus' not allowed ! data: user='$sUser', class='$sClass'");
				throw new ApplicationException(Dict::S('UI:Error:ActionNotAllowed'));
			}

			/** @var \cmdbAbstractObject $oObj */
			$oObj = MetaModel::GetObject($sClass, $id, false);
			if ($oObj != null)
			{
				$aPrefillFormParam = [
					'user'     => Session::Get('auth_user'),
					'context'  => $oAppContext->GetAsHash(),
					'stimulus' => $sStimulus,
					'origin'   => 'console',
				];
				try {
					$bApplyTransition = $oObj->DisplayStimulusForm($oP, $sStimulus, $aPrefillFormParam);
				}
				catch (ApplicationException $e) {
					$bApplyTransition = false;
					$sMessage = $e->getMessage();
					$sSeverity = 'warning';
					ReloadAndDisplay($oP, $oObj, 'stimulus', $sMessage, $sSeverity);
				}
				catch (CoreCannotSaveObjectException $e) {
					$bApplyTransition = false;
					$aIssues = $e->getIssues();
					$sMessage = $e->getHtmlMessage();
					$sSeverity = 'warning';
					ReloadAndDisplay($oP, $oObj, 'stimulus', $sMessage, $sSeverity);
				}
				if ($bApplyTransition) {
					$sMessage = Dict::Format('UI:Class_Object_Updated', MetaModel::GetName(get_class($oObj)), $oObj->GetName());
					$sSeverity = 'ok';
					//transition is ok, whe can display object with transition message
					ReloadAndDisplay($oP, $oObj, 'apply_stimulus', $sMessage, $sSeverity);
				}
			}
			else
			{
				$oP->set_title(Dict::S('UI:ErrorPageTitle'));
				$oP->P(Dict::S('UI:ObjectDoesNotExist'));
			}
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'apply_stimulus': // Actual state change
			$oP->DisableBreadCrumb();
			$sClass = utils::ReadPostedParam('class', '', 'class');
			$id = utils::ReadPostedParam('id', '');
				$sTransactionId = utils::ReadPostedParam('transaction_id', '', 'transaction_id');
			$sStimulus = utils::ReadPostedParam('stimulus', '');
			if ( empty($sClass) || empty($id) ||  empty($sStimulus) ) // TO DO: check that the class name is valid !
			{
				throw new ApplicationException(Dict::Format('UI:Error:3ParametersMissing', 'class', 'id', 'stimulus'));
			}
			/** @var \cmdbAbstractObject $oObj */
			$oObj = MetaModel::GetObject($sClass, $id, false);
			if ($oObj != null)
			{
				$aTransitions = $oObj->EnumTransitions();
				$aStimuli = MetaModel::EnumStimuli($sClass);
				$sMessage = '';
				$sSeverity = 'ok';
				$bDisplayDetails = true;
				if (!isset($aTransitions[$sStimulus]))
				{
					throw new ApplicationException(Dict::Format('UI:Error:Invalid_Stimulus_On_Object_In_State', $sStimulus, $oObj->GetName(), $oObj->GetStateLabel()));
				}
				if (!utils::IsTransactionValid($sTransactionId))
				{
					$sUser = UserRights::GetUser();
					IssueLog::Error("UI.php '$operation' : invalid transaction_id ! data: user='$sUser', class='$sClass'");
					$sMessage = Dict::S('UI:Error:ObjectAlreadyUpdated');
					$sSeverity = 'info';
				}
				elseif ((get_class($aStimuli[$sStimulus]) !== 'StimulusUserAction') || (UserRights::IsStimulusAllowed($sClass, $sStimulus) === UR_ALLOWED_NO))
				{
					$sUser = UserRights::GetUser();
					IssueLog::Error("UI.php '$operation' : Stimulus '$sStimulus' not allowed ! data: user='$sUser', class='$sClass'");
					$sMessage = Dict::S('UI:Error:ActionNotAllowed');
					$sSeverity = 'error';
				}
				else
				{
					$sActionLabel = $aStimuli[$sStimulus]->GetLabel();
					$sActionDetails = $aStimuli[$sStimulus]->GetDescription();
					$sTargetState = $aTransitions[$sStimulus]['target_state'];
					$aExpectedAttributes = $oObj->GetTransitionAttributes($sStimulus /*, current state*/);
					$aDetails = array();
					$aErrors = array();
					foreach($aExpectedAttributes as $sAttCode => $iExpectCode)
					{
						$iFlags = $oObj->GetTransitionFlags($sAttCode, $sStimulus);
						if (($iExpectCode & (OPT_ATT_MUSTCHANGE|OPT_ATT_MUSTPROMPT)) || ($oObj->Get($sAttCode) == '') )
						{
							$paramValue = utils::ReadPostedParam("attr_$sAttCode", '', 'raw_data');
							if ( ($iFlags & OPT_ATT_SLAVE) && ($paramValue != $oObj->Get($sAttCode)))
							{
								$oAttDef = MetaModel::GetAttributeDef($sClass, $sAttCode);
								$aErrors[] = Dict::Format('UI:AttemptingToChangeASlaveAttribute_Name', $oAttDef->GetLabel());
								unset($aExpectedAttributes[$sAttCode]);
							}
						}
					}

					$oObj->UpdateObjectFromPostedForm('', array_keys($aExpectedAttributes), $aExpectedAttributes);

					if (count($aErrors) == 0)
					{
						$sIssues = '';
						$bApplyStimulus = true;
						list($bRes, $aIssues) = $oObj->CheckToWrite(); // Check before trying to write the object
						if ($bRes)
						{
							try
							{
								$bApplyStimulus = $oObj->ApplyStimulus($sStimulus); // will write the object in the DB
							}
							catch(CoreException $e)
							{
								// Rollback to the previous state... by reloading the object from the database and applying the modifications again
								$oObj = MetaModel::GetObject(get_class($oObj), $oObj->GetKey());
								$oObj->UpdateObjectFromPostedForm('', array_keys($aExpectedAttributes), $aExpectedAttributes);
								$sIssues = $e->getMessage();
							}
						}
						else
						{
							$sIssues = implode(' ', $aIssues);
						}

						if (!$bApplyStimulus)
						{
							$sMessage = Dict::S('UI:FailedToApplyStimuli');
							$sSeverity = 'error';

							$sOwnershipToken = utils::ReadPostedParam('ownership_token', null, 'raw_data');
							if ($sOwnershipToken !== null)
							{
								// Release the concurrent lock, if any
								iTopOwnershipLock::ReleaseLock(get_class($oObj), $oObj->GetKey(), $sOwnershipToken);
							}
						}
						else if ($sIssues != '')
						{
							$sOwnershipToken = utils::ReadPostedParam('ownership_token', null, 'raw_data');
							if ($sOwnershipToken !== null)
							{
								// Release the concurrent lock, if any, a new lock will be re-acquired by DisplayStimulusForm below
								iTopOwnershipLock::ReleaseLock(get_class($oObj), $oObj->GetKey(), $sOwnershipToken);
							}

							$bDisplayDetails = false;
							// Found issues, explain and give the user a second chance
							//
							try
							{
								$oObj->DisplayStimulusForm($oP, $sStimulus);
							}
							catch(ApplicationException $e)
							{
								$sMessage = $e->getMessage();
								$sSeverity = 'info';
							}
							$sIssueDesc = Dict::Format('UI:ObjectCouldNotBeWritten',$sIssues);
							$oP->add_ready_script("CombodoModal.OpenErrorModal('".addslashes($sIssueDesc)."');");
						}
						else
						{
							$sMessage = Dict::Format('UI:Class_Object_Updated', MetaModel::GetName(get_class($oObj)), $oObj->GetName());
							$sSeverity = 'ok';
							utils::RemoveTransaction($sTransactionId);
							$bLockEnabled = MetaModel::GetConfig()->Get('concurrent_lock_enabled');
							if ($bLockEnabled)
							{
								// Release the concurrent lock, if any
								$sOwnershipToken = utils::ReadPostedParam('ownership_token', null, 'raw_data');
								if ($sOwnershipToken !== null)
								{
									// We're done, let's release the lock
									iTopOwnershipLock::ReleaseLock(get_class($oObj), $oObj->GetKey(), $sOwnershipToken);
								}
							}
						}
					}
					else
					{
						$sMessage = implode('</p><p>', $aErrors);
						$sSeverity = 'error';
					}
				}
				if ($bDisplayDetails)
				{
					ReloadAndDisplay($oP, $oObj, 'apply_stimulus', $sMessage, $sSeverity);
				}
			}
			else
			{
				$oP->set_title(Dict::S('UI:ErrorPageTitle'));
				$oP->P(Dict::S('UI:ObjectDoesNotExist'));
			}
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'view_relations': // Graphical display of the relations "impact" / "depends on"
			require_once(APPROOT.'core/simplegraph.class.inc.php');
			require_once(APPROOT.'core/relationgraph.class.inc.php');
			require_once(APPROOT.'core/displayablegraph.class.inc.php');
			$sClass = utils::ReadParam('class', '', false, 'class');
			$id = utils::ReadParam('id', 0);
			$sRelation = utils::ReadParam('relation', 'impact');
			$sDirection = utils::ReadParam('direction', 'down');
			$iGroupingThreshold = utils::ReadParam('g', 5);

			$bDirDown = ($sDirection === 'down');
			$oObj = MetaModel::GetObject($sClass, $id);
			$iMaxRecursionDepth = MetaModel::GetConfig()->Get('relations_max_depth');
			$aSourceObjects = array($oObj);

			$oP->set_title(MetaModel::GetRelationDescription($sRelation, $bDirDown).' '.$oObj->GetName());

			$sPageId = "ui-relation-graph-".$sClass.'::'.$id;
			$sLabel = $oObj->GetName().' '.MetaModel::GetRelationLabel($sRelation, $bDirDown);
			$sDescription = MetaModel::GetRelationDescription($sRelation, $bDirDown).' '.$oObj->GetName();
			$oP->SetBreadCrumbEntry($sPageId, $sLabel, $sDescription);

			if ($sRelation == 'depends on') {
				$sRelation = 'impacts';
				$sDirection = 'up';
			}
			if ($sDirection == 'up') {
				$oRelGraph = MetaModel::GetRelatedObjectsUp($sRelation, $aSourceObjects, $iMaxRecursionDepth);
			} else {
				$oRelGraph = MetaModel::GetRelatedObjectsDown($sRelation, $aSourceObjects, $iMaxRecursionDepth);
			}


			$aResults = $oRelGraph->GetObjectsByClass();
			$oDisplayGraph = DisplayableGraph::FromRelationGraph($oRelGraph, $iGroupingThreshold, ($sDirection == 'down'));
			$sTitle = MetaModel::GetRelationDescription($sRelation, $bDirDown).' '.$oObj->GetName();
			$sClassIcon = MetaModel::GetClassIcon($sClass, false);

			$sFirstTab = MetaModel::GetConfig()->Get('impact_analysis_first_tab');
			$bLazyLoading = MetaModel::GetConfig()->Get('impact_analysis_lazy_loading');
			$sContextKey = "itop-config-mgmt/relation_context/$sClass/$sRelation/$sDirection";

			// Check if the current object supports Attachments, similar to AttachmentPlugin::IsTargetObject
			$sClassForAttachment = null;
			$iIdForAttachment = null;
			if (class_exists('Attachment')) {
				$aAllowedClasses = MetaModel::GetModuleSetting('itop-attachments', 'allowed_classes', array('Ticket'));
				foreach ($aAllowedClasses as $sAllowedClass) {
					if ($oObj instanceof $sAllowedClass) {
						$iIdForAttachment = $id;
						$sClassForAttachment = $sClass;
					}
				}
			}

			$oP->AddSubBlock($oDisplayGraph->DisplayFilterBox($oP, $aResults, $bLazyLoading));
			$oPanel = PanelUIBlockFactory::MakeForClass($sClass, $sTitle);
			$oPanel->SetIcon($sClassIcon);

			$oP->AddSubBlock($oPanel);
			$oP->AddTabContainer('Navigator', '', $oPanel);
			$oP->SetCurrentTabContainer('Navigator');

			// Display the tabs
			if ($sFirstTab == 'list') {
				DisplayNavigatorListTab($oP, $aResults, $sRelation, $sDirection, $oObj);
				$oP->SetCurrentTab('UI:RelationshipGraph');
				$oDisplayGraph->DisplayGraph($oP, $sRelation, $oAppContext, [], $sClassForAttachment, $iIdForAttachment, $sContextKey, array('this' => $oObj), $bLazyLoading);
				DisplayNavigatorGroupTab($oP);
			} else {
				$oP->SetCurrentTab('UI:RelationshipGraph');
				$oDisplayGraph->DisplayGraph($oP, $sRelation, $oAppContext, array(), $sClassForAttachment, $iIdForAttachment, $sContextKey, array('this' => $oObj), $bLazyLoading);
				DisplayNavigatorListTab($oP, $aResults, $sRelation, $sDirection, $oObj);
				DisplayNavigatorGroupTab($oP);
			}

			$oP->SetCurrentTab('');
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'kill_lock':
			$oP->DisableBreadCrumb();
			$sClass = utils::ReadParam('class', '', false, 'class');
			$id = utils::ReadParam('id', '');
			iTopOwnershipLock::KillLock($sClass, $id);
			$oObj = MetaModel::GetObject($sClass, $id);
			ReloadAndDisplay($oP, $oObj, 'concurrent_lock_killed', Dict::S('UI:ConcurrentLockKilled'), 'info');
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			case 'cancel': // An action was cancelled
			$oP->DisableBreadCrumb();
			$oP->set_title(Dict::S('UI:OperationCancelled'));
			$oP->add('<h1>'.Dict::S('UI:OperationCancelled').'</h1>');
			break;

			///////////////////////////////////////////////////////////////////////////////////////////

			default: // Menu node rendering (templates)
			ApplicationMenu::LoadAdditionalMenus();
			$oMenuNode = ApplicationMenu::GetMenuNode(ApplicationMenu::GetMenuIndexById(ApplicationMenu::GetActiveNodeId()));
			if (is_object($oMenuNode))
			{
				$oMenuNode->RenderContent($oP, $oAppContext->GetAsHash());
				$oP->set_title($oMenuNode->GetLabel());
			}

			///////////////////////////////////////////////////////////////////////////////////////////
		}
	}

	DisplayWelcomePopup($oP);
	$oKPI->ComputeAndReport('Compute page');
	$oP->output();
}
catch (Exception $e) {
	$oErrorPage = new ErrorPage(Dict::S('UI:PageTitle:FatalError'));
	if ($e instanceof SecurityException) {
		$oErrorPage->add("<h1>".Dict::S('UI:SystemIntrusion')."</h1>\n");
	} else {
		$oErrorPage->add("<h1>".Dict::S('UI:FatalErrorMessage')."</h1>\n");
	}
	$sErrorDetails = ($e instanceof CoreException) ? $e->getHtmlDesc() : $e->getMessage();
	$oErrorPage->error(Dict::Format('UI:Error_Details', utils::EscapeHtml($sErrorDetails)));
	$oErrorPage->output();

	$sErrorStackTrace = ($e instanceof CoreException) ? $e->getFullStackTraceAsString() : $e->getTraceAsString();
	if (MetaModel::IsLogEnabledIssue()) {
		if (MetaModel::IsValidClass('EventIssue')) {
			try {
				$oLog = new EventIssue();

				$oLog->Set('message', $e->getMessage());
				$oLog->Set('userinfo', '');
				$sIssue = ($e instanceof CoreException) ? $e->GetIssue() : 'PHP Exception';
				$oLog->Set('issue', $sIssue);
				$oLog->Set('impact', 'Page could not be displayed');
				$oLog->Set('callstack', $sErrorStackTrace);
				$aData = ($e instanceof CoreException) ? $e->getContextData() : [];
				$oLog->Set('data', $aData);
				$oLog->DBInsertNoReload();
			}
			catch (Exception $e) {
				IssueLog::Error("Failed to log issue into the DB");
			}
		}
	}

	$sOperationToLog = $operation ?? 'N/A';
	IssueLog::Debug('UI.php operation='.$sOperationToLog.', error='.$e->getMessage()."\n".$sErrorStackTrace, LogChannels::CONSOLE);
}


class UI
{

	/**
	 * Operation select_for_modify_all
	 *
	 * @param iTopWebPage $oP
	 *
	 * @throws \ApplicationException
	 * @throws \ArchivedObjectException
	 * @throws \CoreException
	 * @throws \OQLException
	 */
	public static function OperationSelectForModifyAll(iTopWebPage $oP): void
	{
		$oP->DisableBreadCrumb();
		$oP->set_title(Dict::S('UI:ModifyAllPageTitle'));
		$sFilter = utils::ReadParam('filter', '', false, utils::ENUM_SANITIZATION_FILTER_RAW_DATA);
		if (empty($sFilter)) {
			throw new ApplicationException(Dict::Format('UI:Error:1ParametersMissing', 'filter'));
		}
		$oFilter = DBObjectSearch::unserialize($sFilter); //TODO : check that the filter is valid
		// Add user filter
		$oFilter->UpdateContextFromUser();
		$oChecker = new ActionChecker($oFilter, UR_ACTION_BULK_MODIFY);
		$sClass = $oFilter->GetClass();
		$sClassName = MetaModel::GetName($sClass);

		$aDisplayParams = [
			'icon' => MetaModel::GetClassIcon($sClass, false),
			'title' => Dict::Format('UI:Modify_ObjectsOf_Class', $sClassName),
		];
		DisplayMultipleSelectionForm($oP, $oFilter, 'form_for_modify_all', $oChecker, [], $aDisplayParams);
	}

	/**
	 * Operation form_for_modify_all
	 *
	 * @param iTopWebPage $oP
	 * @param \ApplicationContext $oAppContext
	 *
	 * @throws \ArchivedObjectException
	 * @throws \CoreException
	 * @throws \CoreUnexpectedValue
	 * @throws \MySQLException
	 * @throws \OQLException
	 */
	public static function OperationFormForModifyAll(iTopWebPage $oP, ApplicationContext $oAppContext): void
	{
		$oP->DisableBreadCrumb();
		$sFilter = utils::ReadParam('filter', '', false, utils::ENUM_SANITIZATION_FILTER_RAW_DATA);
		$sClass = utils::ReadParam('class', '', false, utils::ENUM_SANITIZATION_FILTER_CLASS);
		$oFullSetFilter = DBObjectSearch::unserialize($sFilter);
		// Add user filter
		$oFullSetFilter->UpdateContextFromUser();
		$aSelectedObj = utils::ReadMultipleSelection($oFullSetFilter);
		$sCancelUrl = "./UI.php?operation=search&filter=".urlencode($sFilter).$oAppContext->GetForLink(true);
		$aContext = array('filter' => utils::EscapeHtml($sFilter));
		cmdbAbstractObject::DisplayBulkModifyForm($oP, $sClass, $aSelectedObj, 'preview_or_modify_all', $sCancelUrl, array(), $aContext);
	}

	/**
	 * Operation preview_or_modify_all
	 *
	 * @param iTopWebPage $oP
	 * @param \ApplicationContext $oAppContext
	 *
	 * @throws \ApplicationException
	 * @throws \ArchivedObjectException
	 * @throws \CoreCannotSaveObjectException
	 * @throws \CoreException
	 * @throws \DictExceptionMissingString
	 * @throws \OQLException
	 */
	public static function OperationPreviewOrModifyAll(iTopWebPage $oP, ApplicationContext $oAppContext): void
	{
		$oP->DisableBreadCrumb();
		$sFilter = utils::ReadParam('filter', '', false, 'raw_data');
		$oFilter = DBObjectSearch::unserialize($sFilter); // TO DO : check that the filter is valid
		// Add user filter
		$oFilter->UpdateContextFromUser();

		$sClass = utils::ReadParam('class', '', false, 'class');
		$bPreview = utils::ReadParam('preview_mode', '');
		$sSelectedObj = utils::ReadParam('selectObj', '', false, 'raw_data');
		if (empty($sClass) || empty($sSelectedObj)) // TO DO: check that the class name is valid !
		{
			throw new ApplicationException(Dict::Format('UI:Error:2ParametersMissing', 'class', 'selectObj'));
		}
		$aSelectedObj = explode(',', $sSelectedObj);
		$sCancelUrl = "./UI.php?operation=search&filter=".urlencode($sFilter).$oAppContext->GetForLink(true);
		$aContext = array(
			'filter'    => utils::EscapeHtml($sFilter),
			'selectObj' => $sSelectedObj,
		);
		cmdbAbstractObject::DoBulkModify($oP, $sClass, $aSelectedObj, 'preview_or_modify_all', $bPreview, $sCancelUrl, $aContext);
	}
}