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<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_menus
 *
 * @copyright   (C) 2016 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\Language\LanguageHelper;

JHtml::_('bootstrap.tooltip', '.hasTooltip');

/**
 * Supports a modal menu item picker.
 *
 * @since  3.7.0
 */
class JFormFieldModal_Menu extends JFormField
{
	/**
	 * The form field type.
	 *
	 * @var     string
	 * @since   3.7.0
	 */
	protected $type = 'Modal_Menu';

	/**
	 * Determinate, if the select button is shown
	 *
	 * @var     boolean
	 * @since   3.7.0
	 */
	protected $allowSelect = true;

	/**
	 * Determinate, if the clear button is shown
	 *
	 * @var     boolean
	 * @since   3.7.0
	 */
	protected $allowClear = true;

	/**
	 * Determinate, if the create button is shown
	 *
	 * @var     boolean
	 * @since   3.7.0
	 */
	protected $allowNew = false;

	/**
	 * Determinate, if the edit button is shown
	 *
	 * @var     boolean
	 * @since   3.7.0
	 */
	protected $allowEdit = false;

	/**
	 * Determinate, if the propagate button is shown
	 *
	 * @var     boolean
	 * @since   3.9.0
	 */
	protected $allowPropagate = false;

	/**
	 * Method to get certain otherwise inaccessible properties from the form
field object.
	 *
	 * @param   string  $name  The property name for which to get the value.
	 *
	 * @return  mixed  The property value or null.
	 *
	 * @since   3.7.0
	 */
	public function __get($name)
	{
		switch ($name)
		{
			case 'allowSelect':
			case 'allowClear':
			case 'allowNew':
			case 'allowEdit':
			case 'allowPropagate':
				return $this->$name;
		}

		return parent::__get($name);
	}

	/**
	 * Method to set certain otherwise inaccessible properties of the form
field object.
	 *
	 * @param   string  $name   The property name for which to set the value.
	 * @param   mixed   $value  The value of the property.
	 *
	 * @return  void
	 *
	 * @since   3.7.0
	 */
	public function __set($name, $value)
	{
		switch ($name)
		{
			case 'allowSelect':
			case 'allowClear':
			case 'allowNew':
			case 'allowEdit':
			case 'allowPropagate':
				$value = (string) $value;
				$this->$name = !($value === 'false' || $value ===
'off' || $value === '0');
				break;

			default:
				parent::__set($name, $value);
		}
	}

	/**
	 * Method to attach a JForm object to the field.
	 *
	 * @param   SimpleXMLElement  $element  The SimpleXMLElement object
representing the `<field>` tag for the form field object.
	 * @param   mixed             $value    The form field value to validate.
	 * @param   string            $group    The field name group control
value. This acts as an array container for the field.
	 *                                      For example if the field has
name="foo" and the group value is set to "bar" then the
	 *                                      full field name would end up being
"bar[foo]".
	 *
	 * @return  boolean  True on success.
	 *
	 * @see     JFormField::setup()
	 * @since   3.7.0
	 */
	public function setup(SimpleXMLElement $element, $value, $group = null)
	{
		$return = parent::setup($element, $value, $group);

		if ($return)
		{
			$this->allowSelect = ((string) $this->element['select'])
!== 'false';
			$this->allowClear = ((string) $this->element['clear'])
!== 'false';
			$this->allowPropagate = ((string)
$this->element['propagate']) === 'true';

			// Creating/editing menu items is not supported in frontend.
			$isAdministrator =
JFactory::getApplication()->isClient('administrator');
			$this->allowNew = $isAdministrator ? ((string)
$this->element['new']) === 'true' : false;
			$this->allowEdit = $isAdministrator ? ((string)
$this->element['edit']) === 'true' : false;
		}

		return $return;
	}

	/**
	 * Method to get the field input markup.
	 *
	 * @return  string  The field input markup.
	 *
	 * @since   3.7.0
	 */
	protected function getInput()
	{
		$clientId    = (int) $this->element['clientid'];
		$languages   = LanguageHelper::getContentLanguages(array(0, 1));

		// Load language
		JFactory::getLanguage()->load('com_menus',
JPATH_ADMINISTRATOR);

		// The active article id field.
		$value = (int) $this->value > 0 ? (int) $this->value :
'';

		// Create the modal id.
		$modalId = 'Item_' . $this->id;

		// Add the modal field script to the document head.
		JHtml::_('jquery.framework');
		JHtml::_('script', 'system/modal-fields.js',
array('version' => 'auto', 'relative'
=> true));

		// Script to proxy the select modal function to the modal-fields.js file.
		if ($this->allowSelect)
		{
			static $scriptSelect = null;

			if (is_null($scriptSelect))
			{
				$scriptSelect = array();
			}

			if (!isset($scriptSelect[$this->id]))
			{
				JFactory::getDocument()->addScriptDeclaration("
				function jSelectMenu_" . $this->id . "(id, title, object)
{
					window.processModalSelect('Item', '" .
$this->id . "', id, title, '', object);
				}
				"
				);

				JText::script('JGLOBAL_ASSOCIATIONS_PROPAGATE_FAILED');

				$scriptSelect[$this->id] = true;
			}
		}

		// Setup variables for display.
		$linkSuffix = '&amp;layout=modal&amp;client_id=' .
$clientId . '&amp;tmpl=component&amp;' .
JSession::getFormToken() . '=1';
		$linkItems  = 'index.php?option=com_menus&amp;view=items' .
$linkSuffix;
		$linkItem   = 'index.php?option=com_menus&amp;view=item' .
$linkSuffix;
		$modalTitle = JText::_('COM_MENUS_CHANGE_MENUITEM');

		if (isset($this->element['language']))
		{
			$linkItems  .= '&amp;forcedLanguage=' .
$this->element['language'];
			$linkItem   .= '&amp;forcedLanguage=' .
$this->element['language'];
			$modalTitle .= ' &#8212; ' .
$this->element['label'];
		}

		$urlSelect = $linkItems . '&amp;function=jSelectMenu_' .
$this->id;
		$urlEdit   = $linkItem . '&amp;task=item.edit&amp;id=\'
+ document.getElementById("' . $this->id .
'_id").value + \'';
		$urlNew    = $linkItem . '&amp;task=item.add';

		if ($value)
		{
			$db    = JFactory::getDbo();
			$query = $db->getQuery(true)
				->select($db->quoteName('title'))
				->from($db->quoteName('#__menu'))
				->where($db->quoteName('id') . ' = ' . (int)
$value);

			$db->setQuery($query);

			try
			{
				$title = $db->loadResult();
			}
			catch (RuntimeException $e)
			{
				JError::raiseWarning(500, $e->getMessage());
			}
		}

		// Placeholder if option is present or not
		if (empty($title))
		{
			if ($this->element->option && (string)
$this->element->option['value'] == '')
			{
				$title_holder = JText::_($this->element->option);
			}
			else
			{
				$title_holder = JText::_('COM_MENUS_SELECT_A_MENUITEM');
			}
		}

		$title = empty($title) ? $title_holder : htmlspecialchars($title,
ENT_QUOTES, 'UTF-8');

		// The current menu item display field.
		$html  = '<span class="input-append">';
		$html .= '<input class="input-medium" id="' .
$this->id . '_name" type="text" value="' .
$title . '" disabled="disabled" size="35"
/>';

		// Select menu item button
		if ($this->allowSelect)
		{
			$html .= '<button'
				. ' type="button"'
				. ' class="btn hasTooltip' . ($value ? '
hidden' : '') . '"'
				. ' id="' . $this->id . '_select"'
				. ' data-toggle="modal"'
				. ' data-target="#ModalSelect' . $modalId .
'"'
				. ' title="' .
JHtml::tooltipText('COM_MENUS_CHANGE_MENUITEM') .
'">'
				. '<span class="icon-file"
aria-hidden="true"></span> ' .
JText::_('JSELECT')
				. '</button>';
		}

		// New menu item button
		if ($this->allowNew)
		{
			$html .= '<button'
				. ' type="button"'
				. ' class="btn hasTooltip' . ($value ? '
hidden' : '') . '"'
				. ' id="' . $this->id . '_new"'
				. ' data-toggle="modal"'
				. ' data-target="#ModalNew' . $modalId .
'"'
				. ' title="' .
JHtml::tooltipText('COM_MENUS_NEW_MENUITEM') .
'">'
				. '<span class="icon-new"
aria-hidden="true"></span> ' .
JText::_('JACTION_CREATE')
				. '</button>';
		}

		// Edit menu item button
		if ($this->allowEdit)
		{
			$html .= '<button'
				. ' type="button"'
				. ' class="btn hasTooltip' . ($value ? '' :
' hidden') . '"'
				. ' id="' . $this->id . '_edit"'
				. ' data-toggle="modal"'
				. ' data-target="#ModalEdit' . $modalId .
'"'
				. ' title="' .
JHtml::tooltipText('COM_MENUS_EDIT_MENUITEM') .
'">'
				. '<span class="icon-edit"
aria-hidden="true"></span> ' .
JText::_('JACTION_EDIT')
				. '</button>';
		}

		// Clear menu item button
		if ($this->allowClear)
		{
			$html .= '<button'
				. ' type="button"'
				. ' class="btn' . ($value ? '' : '
hidden') . '"'
				. ' id="' . $this->id . '_clear"'
				. ' onclick="window.processModalParent(\'' .
$this->id . '\'); return false;">'
				. '<span class="icon-remove"
aria-hidden="true"></span>' .
JText::_('JCLEAR')
				. '</button>';
		}

		// Propagate menu item button
		if ($this->allowPropagate && count($languages) > 2)
		{
			// Strip off language tag at the end
			$tagLength = (int) strlen($this->element['language']);
			$callbackFunctionStem = substr("jSelectMenu_" . $this->id,
0, -$tagLength);

			$html .= '<a'
			. ' class="btn hasTooltip' . ($value ? '' :
' hidden') . '"'
			. ' id="' . $this->id . '_propagate"'
			. ' href="#"'
			. ' title="' .
JHtml::tooltipText('JGLOBAL_ASSOCIATIONS_PROPAGATE_TIP') .
'"'
			. ' onclick="Joomla.propagateAssociation(\'' .
$this->id . '\', \'' . $callbackFunctionStem .
'\');">'
			. '<span class="icon-refresh"
aria-hidden="true"></span>' .
JText::_('JGLOBAL_ASSOCIATIONS_PROPAGATE_BUTTON')
			. '</a>';
		}

		$html .= '</span>';


		// Select menu item modal
		if ($this->allowSelect)
		{
			$html .= JHtml::_(
				'bootstrap.renderModal',
				'ModalSelect' . $modalId,
				array(
					'title'       => $modalTitle,
					'url'         => $urlSelect,
					'height'      => '400px',
					'width'       => '800px',
					'bodyHeight'  => '70',
					'modalWidth'  => '80',
					'footer'      => '<button type="button"
class="btn" data-dismiss="modal">' .
JText::_('JLIB_HTML_BEHAVIOR_CLOSE') .
'</button>',
				)
			);
		}

		// New menu item modal
		if ($this->allowNew)
		{
			$html .= JHtml::_(
				'bootstrap.renderModal',
				'ModalNew' . $modalId,
				array(
					'title'       =>
JText::_('COM_MENUS_NEW_MENUITEM'),
					'backdrop'    => 'static',
					'keyboard'    => false,
					'closeButton' => false,
					'url'         => $urlNew,
					'height'      => '400px',
					'width'       => '800px',
					'bodyHeight'  => '70',
					'modalWidth'  => '80',
					'footer'      => '<button type="button"
class="btn"'
							. ' onclick="window.processModalEdit(this, \'' .
$this->id . '\', \'add\', \'item\',
\'cancel\', \'item-form\'); return
false;">'
							. JText::_('JLIB_HTML_BEHAVIOR_CLOSE') .
'</button>'
							. '<button type="button" class="btn
btn-primary"'
							. ' onclick="window.processModalEdit(this, \'' .
$this->id . '\', \'add\', \'item\',
\'save\', \'item-form\'); return false;">'
							. JText::_('JSAVE') . '</button>'
							. '<button type="button" class="btn
btn-success"'
							. ' onclick="window.processModalEdit(this, \'' .
$this->id . '\', \'add\', \'item\',
\'apply\', \'item-form\'); return
false;">'
							. JText::_('JAPPLY') . '</button>',
				)
			);
		}

		// Edit menu item modal
		if ($this->allowEdit)
		{
			$html .= JHtml::_(
				'bootstrap.renderModal',
				'ModalEdit' . $modalId,
				array(
					'title'       =>
JText::_('COM_MENUS_EDIT_MENUITEM'),
					'backdrop'    => 'static',
					'keyboard'    => false,
					'closeButton' => false,
					'url'         => $urlEdit,
					'height'      => '400px',
					'width'       => '800px',
					'bodyHeight'  => '70',
					'modalWidth'  => '80',
					'footer'      => '<button type="button"
class="btn"'
							. ' onclick="window.processModalEdit(this, \'' .
$this->id . '\', \'edit\', \'item\',
\'cancel\', \'item-form\'); return
false;">'
							. JText::_('JLIB_HTML_BEHAVIOR_CLOSE') .
'</button>'
							. '<button type="button" class="btn
btn-primary"'
							. ' onclick="window.processModalEdit(this, \'' .
$this->id . '\', \'edit\', \'item\',
\'save\', \'item-form\'); return false;">'
							. JText::_('JSAVE') . '</button>'
							. '<button type="button" class="btn
btn-success"'
							. ' onclick="window.processModalEdit(this, \'' .
$this->id . '\', \'edit\', \'item\',
\'apply\', \'item-form\'); return
false;">'
							. JText::_('JAPPLY') . '</button>',
				)
			);
		}

		// Note: class='required' for client side validation.
		$class = $this->required ? ' class="required
modal-value"' : '';

		// Placeholder if option is present or not when clearing field
		if ($this->element->option && (string)
$this->element->option['value'] == '')
		{
			$title_holder = JText::_($this->element->option);
		}
		else
		{
			$title_holder = JText::_('COM_MENUS_SELECT_A_MENUITEM');
		}

		$html .= '<input type="hidden" id="' .
$this->id . '_id" ' . $class . '
data-required="' . (int) $this->required . '"
name="' . $this->name
			. '" data-text="' . htmlspecialchars($title_holder,
ENT_COMPAT, 'UTF-8') . '" value="' . $value .
'" />';

		return $html;
	}

	/**
	 * Method to get the field label markup.
	 *
	 * @return  string  The field label markup.
	 *
	 * @since   3.7.0
	 */
	protected function getLabel()
	{
		return str_replace($this->id, $this->id . '_id',
parent::getLabel());
	}
}