Expand the form contents if the filter is in use.
@throws \HTML_QuickForm_Error
514503
public function definition_after_data() {
        $mform = $this->_form;
        $filterstartdate = $mform->getElement('filterstartdate')->getValue();
        $filterenddate = $mform->getElement('filterenddate')->getValue();
        if (!empty($filterstartdate['enabled']) || !empty($filterenddate['enabled'])) {
            $mform->setExpanded('filterheader', true);
        }
    }
1331876
protected function InitForm()
    {
        $this->html = $this->LoadElement();
        $name = 'Html';
        $this->AddRichTextField($name, $this->html->GetHtml());
        $this->AddCssClassField();
        $this->AddCssIDField();
        $this->AddCacheLifetimeField();
        $this->AddSubmit();
    }
505574
function() {

            // Build filter if filtering OR case insensitive filtering is enabled and the number of options exceeds (or equals) enableFilterLength.
            if (this.options.enableFiltering || this.options.enableCaseInsensitiveFiltering) {
                var enableFilterLength = Math.max(this.options.enableFiltering, this.options.enableCaseInsensitiveFiltering);

                if (this.$select.find('option').length >= enableFilterLength) {

                    this.$filter = $(this.options.templates.filter);
                    $('input', this.$filter).attr('placeholder', this.options.filterPlaceholder);

                    // Adds optional filter clear button
                    if(this.options.includeFilterClearBtn){
                        var clearBtn = $(this.options.templates.filterClearBtn);
                        clearBtn.on('click', $.proxy(function(event){
                            clearTimeout(this.searchTimeout);
                            this.$filter.find('.multiselect-search').val('');
                            $('li', this.$ul).show().removeClass("filter-hidden");
                            this.updateSelectAll();
                        }, this));
                        this.$filter.find('.input-group').append(clearBtn);
                    }

                    this.$ul.prepend(this.$filter);

                    this.$filter.val(this.query).on('click', function(event) {
                        event.stopPropagation();
                    }).on('input keydown', $.proxy(function(event) {
                        // Cancel enter key default behaviour
                        if (event.which === 13) {
                            event.preventDefault();
                        }

                        // This is useful to catch "keydown" events after the browser has updated the control.
                        clearTimeout(this.searchTimeout);

                        this.searchTimeout = this.asyncFunction($.proxy(function() {

                            if (this.query !== event.target.value) {
                                this.query = event.target.value;

                                var currentGroup, currentGroupVisible;
                                $.each($('li', this.$ul), $.proxy(function(index, element) {
                                    var value = $('input', element).length > 0 ? $('input', element).val() : "";
                                    var text = $('label', element).text();

                                    var filterCandidate = '';
                                    if ((this.options.filterBehavior === 'text')) {
                                        filterCandidate = text;
                                    }
                                    else if ((this.options.filterBehavior === 'value')) {
                                        filterCandidate = value;
                                    }
                                    else if (this.options.filterBehavior === 'both') {
                                        filterCandidate = text + '\n' + value;
                                    }

                                    if (value !== this.options.selectAllValue && text) {
                                        // By default lets assume that element is not
                                        // interesting for this search.
                                        var showElement = false;

                                        if (this.options.enableCaseInsensitiveFiltering && filterCandidate.toLowerCase().indexOf(this.query.toLowerCase()) > -1) {
                                            showElement = true;
                                        }
                                        else if (filterCandidate.indexOf(this.query) > -1) {
                                            showElement = true;
                                        }

                                        // Toggle current element (group or group item) according to showElement boolean.
                                        $(element).toggle(showElement).toggleClass('filter-hidden', !showElement);

                                        // Differentiate groups and group items.
                                        if ($(element).hasClass('multiselect-group')) {
                                            // Remember group status.
                                            currentGroup = element;
                                            currentGroupVisible = showElement;
                                        }
                                        else {
                                            // Show group name when at least one of its items is visible.
                                            if (showElement) {
                                                $(currentGroup).show().removeClass('filter-hidden');
                                            }

                                            // Show all group items when group name satisfies filter.
                                            if (!showElement && currentGroupVisible) {
                                                $(element).show().removeClass('filter-hidden');
                                            }
                                        }
                                    }
                                }, this));
                            }

                            this.updateSelectAll();
                        }, this), 300, this);
                    }, this));
                }
            }
        }
983023
private function addFilters()
    {
        foreach ($this->_data as $requestName => $requestConfig) {
            if (isset($requestConfig['filters'])) {
                $filters = [];

                foreach ($requestConfig['filters'] as $filterName => $filterClass) {
                    $filters[$filterName] = $this->objectManager->get($filterClass);
                }

                $this->_data[$requestName]['filters'] = $filters;
            }
        }
    }
199730
private function sanitizeRequest()
    {
        // The label filter does not work with expanded=1 because the data table IDs have a different meaning
        // depending on whether the table has been loaded yet. expanded=1 causes all tables to be loaded, which
        // is why the label filter can't descend when a recursive label has been requested.
        // To fix this, we remove the expanded parameter if a label parameter is set.
        if (isset($this->request['label']) && !empty($this->request['label'])
            && isset($this->request['expanded']) && $this->request['expanded']
        ) {
            unset($this->request['expanded']);
        }
    }
1012654
private function insertFormEnd() {

		$this->html = preg_replace(
			'/\{\s*end_form\s*\}/i',
			'</form>',
			$this->html,
			-1,
			$count
		);

		// more than one closing tag found

		if($count > 1) {

			throw new HtmlFormException("Found more than one closing {end_form} tags.", HtmlFormException::INVALID_MARKUP);

		}

		// no closing tag

		if(!$count) {
			$this->html .= '</form>';
		}

		return $this;

	}
1155040
function() {

            // Build filter if filtering OR case insensitive filtering is enabled and the number of options exceeds (or equals) enableFilterLength.
            if (this.options.enableFiltering || this.options.enableCaseInsensitiveFiltering) {
                var enableFilterLength = Math.max(this.options.enableFiltering, this.options.enableCaseInsensitiveFiltering);

                if (this.$select.find('option').length >= enableFilterLength) {

                    this.$filter = $(this.options.templates.filter);
                    $('input', this.$filter).attr('placeholder', this.options.filterPlaceholder);
                    this.$ul.prepend(this.$filter);

                    this.$filter.val(this.query).on('click', function(event) {
                        event.stopPropagation();
                    }).on('input keydown', $.proxy(function(event) {
                        // This is useful to catch "keydown" events after the browser has updated the control.
                        clearTimeout(this.searchTimeout);

                        this.searchTimeout = this.asyncFunction($.proxy(function() {

                            if (this.query !== event.target.value) {
                                this.query = event.target.value;

                                $.each($('li', this.$ul), $.proxy(function(index, element) {
                                    var value = $('input', element).val();
                                    var text = $('label', element).text();

                                    var filterCandidate = '';
                                    if ((this.options.filterBehavior === 'text')) {
                                        filterCandidate = text;
                                    }
                                    else if ((this.options.filterBehavior === 'value')) {
                                        filterCandidate = value;
                                    }
                                    else if (this.options.filterBehavior === 'both') {
                                        filterCandidate = text + '\n' + value;
                                    }

                                    if (value !== this.options.selectAllValue && text) {
                                        // by default lets assume that element is not
                                        // interesting for this search
                                        var showElement = false;

                                        if (this.options.enableCaseInsensitiveFiltering && filterCandidate.toLowerCase().indexOf(this.query.toLowerCase()) > -1) {
                                            showElement = true;
                                        }
                                        else if (filterCandidate.indexOf(this.query) > -1) {
                                            showElement = true;
                                        }

                                        if (showElement) {
                                            $(element).show().removeClass("filter-hidden");
                                        }
                                        else {
                                            $(element).hide().addClass("filter-hidden");
                                        }
                                    }
                                }, this));
                            }

                            this.updateSelectAll();
                        }, this), 300, this);
                    }, this));
                }
            }
        }
1310820
public function definition() {
        $mform = $this->_form;

        $mform->addElement('text', 'name', get_string('discussionname', 'forum'), array('size' => '60', 'maxlength' => '255'));
        $mform->setType('name', PARAM_TEXT);
        $mform->addRule('name', null, 'required', null, 'client');
        $mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
        $this->add_action_buttons(true, get_string('prune', 'forum'));

        $mform->addElement('hidden', 'prune');
        $mform->setType('prune', PARAM_INT);
        $mform->setConstant('prune', $this->_customdata['prune']);

        $mform->addElement('hidden', 'confirm');
        $mform->setType('confirm', PARAM_INT);
        $mform->setConstant('confirm', $this->_customdata['confirm']);
    }
886793
public static function shouldLoadExpanded()
    {
        // if filter_column_recursive & filter_pattern_recursive are supplied, and flat isn't supplied
        // we have to load all the child subtables.
        return Common::getRequestVar('filter_column_recursive', false) !== false
            && Common::getRequestVar('filter_pattern_recursive', false) !== false
            && !self::shouldLoadFlatten();
    }
425087
public function filterSucceeded(Form $form)
	{
		if ($this->snippets_set) {
			return;
		}

		$values = $form->getValues();

		if ($this->getPresenter()->isAjax()) {
			if (isset($form['group_action']['submit']) && $form['group_action']['submit']->isSubmittedBy()) {
				return;
			}
		}

		/**
		 * Per page
		 */
		$this->saveSessionData('_grid_per_page', $values->per_page);
		$this->per_page = $values->per_page;

		/**
		 * Inline edit
		 */
		if (isset($form['inline_edit']) && isset($form['inline_edit']['submit']) && isset($form['inline_edit']['cancel'])) {
			$edit = $form['inline_edit'];

			if ($edit['submit']->isSubmittedBy() || $edit['cancel']->isSubmittedBy()) {
				$id = $form->getHttpData(Form::DATA_LINE, 'inline_edit[_id]');
				$primary_where_column = $form->getHttpData(
					Form::DATA_LINE,
					'inline_edit[_primary_where_column]'
				);

				if ($edit['submit']->isSubmittedBy() && !$edit->getErrors()) {
					$this->inlineEdit->onSubmit($id, $values->inline_edit);
					$this->getPresenter()->payload->_datagrid_inline_edited = $id;
					$this->getPresenter()->payload->_datagrid_name = $this->getName();
				} else {
					$this->getPresenter()->payload->_datagrid_inline_edit_cancel = $id;
					$this->getPresenter()->payload->_datagrid_name = $this->getName();
				}

				if ($edit['submit']->isSubmittedBy() && !empty($this->inlineEdit->onCustomRedraw)) {
					$this->inlineEdit->onCustomRedraw();
				} else {
					$this->redrawItem($id, $primary_where_column);
					$this->redrawControl('summary');
				}

				return;
			}
		}

		/**
		 * Inline add
		 */
		if (isset($form['inline_add']) && isset($form['inline_add']['submit']) && isset($form['inline_add']['cancel'])) {
			$add = $form['inline_add'];

			if ($add['submit']->isSubmittedBy() || $add['cancel']->isSubmittedBy()) {
				if ($add['submit']->isSubmittedBy() && !$add->getErrors()) {
					$this->inlineAdd->onSubmit($values->inline_add);

					if ($this->getPresenter()->isAjax()) {
						$this->getPresenter()->payload->_datagrid_inline_added = true;
					}
				}

				return;
			}
		}

		/**
		 * Filter itself
		 */
		$values = $values['filter'];

		foreach ($values as $key => $value) {
			/**
			 * Session stuff
			 */
			if ($this->remember_state && $this->getSessionData($key) != $value) {
				/**
				 * Has been filter changed?
				 */
				$this->page = 1;
				$this->saveSessionData('_grid_page', 1);
			}

			$this->saveSessionData($key, $value);

			/**
			 * Other stuff
			 */
			$this->filter[$key] = $value;
		}

		if (!empty($values)) {
			$this->saveSessionData('_grid_has_filtered', 1);
		}

		if ($this->getPresenter()->isAjax()) {
			$this->getPresenter()->payload->_datagrid_sort = [];

			foreach ($this->columns as $key => $column) {
				if ($column->isSortable()) {
					$this->getPresenter()->payload->_datagrid_sort[$key] = $this->link('sort!', [
						'sort' => $column->getSortNext(),
					]);
				}
			}
		}

		$this->reload();
	}
9940
protected function _layoutForm()
    {
        if (!$this->expiresOn) {
            $expiresOn = new AnDate();

            $expiresOn->addMonths(1);

            $this->set(array(
                'expiresOn' => $expiresOn,
            ));
        }
    }
184273
protected function fillModeratedByAttribute(): void
    {
        if ($this->moderatedByAttribute !== false) {
            $this->owner->{$this->moderatedByAttribute} = $this->getModeratedByAttributeValue();
        }
    }
437295
public function adjustPalettes(): void
    {
        // Load custom form config.
        $this->environment->enterContext(FormContext::forForm((int) CURRENT_ID));
        $widgets = $this->environment->getConfig()->get('form.widgets', []);

        foreach ($widgets as $name => $config) {
            if (!empty($config['input_group'])) {
                try {
                    MetaPalettes::appendFields('tl_form_field', $name, 'fconfig', ['bs_addInputGroup']);
                    // @codingStandardsIgnoreStart Catch statement is empty on purpose
                } catch (PaletteNotFoundException | LegacyPaletteNotFoundException $e) {
                    // Palette does not exist. Just skip it.
                }
                // @codingStandardsIgnoreEnd
            }
        }
    }
1067680
protected void quickSearch() {

        List<CmsTreeItem> categories = new ArrayList<CmsTreeItem>();
        if ((m_quickSearch != null)) {
            categories = getFilteredCategories(hasQuickFilter() ? m_quickSearch.getFormValueAsString() : null);
            sort(categories, SortParams.valueOf(m_sortSelectBox.getFormValueAsString()));
        }
    }
987261
public function filterInput()
    {
        foreach ($this->input as $key => $val) {
            // Call all local methods on filter
            $method = $this->getFilterMethod($key);

            if ($this->methodIsCallable($method)) {
                $this->{$method}($val);
            }
        }
    }
434051
public function updateForm()
    {
        if ($userDefinedForm = $this->owner->getController()->data()) {
            
            if ($userDefinedForm->EnableSpamGuard) {
                $this->owner->enableSpamProtection();
            }
            
        }
    }
345276
protected function loadFormData()
	{
		// Check the session for previously entered form data.
		$app = JFactory::getApplication();
		$data = $app->getUserState('com_categories.edit.' . $this->getName() . '.data', array());

		if (empty($data))
		{
			$data = $this->getItem();

			// Pre-select some filters (Status, Language, Access) in edit form if those have been selected in Category Manager
			if (!$data->id)
			{
				// Check for which extension the Category Manager is used and get selected fields
				$extension = substr($app->getUserState('com_categories.categories.filter.extension'), 4);
				$filters = (array) $app->getUserState('com_categories.categories.' . $extension . '.filter');

				$data->set(
					'published',
					$app->input->getInt(
						'published',
						((isset($filters['published']) && $filters['published'] !== '') ? $filters['published'] : null)
					)
				);
				$data->set('language', $app->input->getString('language', (!empty($filters['language']) ? $filters['language'] : null)));
				$data->set(
					'access',
					$app->input->getInt('access', (!empty($filters['access']) ? $filters['access'] : JFactory::getConfig()->get('access')))
				);
			}
		}

		$this->preprocessData('com_categories.category', $data);

		return $data;
	}