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<?php
/**
 * Contains the classes responsible for displaying a tree table filled with icms_ipf_Object
 *
 * @copyright   The ImpressCMS Project http://www.impresscms.org/
 * @license     http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU General Public License (GPL)
 * @category    ICMS
 * @package     ipf
 * @subpackage  View
 * @since       1.1
 * @author      marcan <marcan@impresscms.org>
 * @version     $Id: icmspersistabletreetable.php 19651 2010-06-26 06:15:15Z malanciault $
 */

defined('ICMS_ROOT_PATH') || die("ImpressCMS root path not defined");

/**
 * icms_ipf_view_Tree base class
 *
 * Base class representing a table for displaying icms_ipf_Object tree objects
 *
 * @copyright   The ImpressCMS Project http://www.impresscms.org/
 * @license     http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU General Public License (GPL)
 * @category    ICMS
 * @package     Ipf
 * @subpackage  View
 * @since       1.1
 * @author      marcan <marcan@impresscms.org>
 * @version     $Id: icmspersistabletreetable.php 19651 2010-06-26 06:15:15Z malanciault $
 */
class icms_ipf_view_Tree extends icms_ipf_view_Table {

    /**
     * Construct the tree object
     *
     * @param object $objectHandler (@link icms_ipf_Handler)
     * @param object $criteria      (@link icms_db_criteria_Compo)
     * @param array $actions        An array of actions for this object
     * @param boolean $userSide     TRUE - display on the user side; FALSE - do not display
     */
    public function __construct(&$objectHandler, $criteria=FALSE, $actions=array('edit', 'delete'), $userSide=FALSE) {
        parent::__construct($objectHandler, $criteria, $actions, $userSide);
        $this->_isTree = TRUE;
    }

    /**
     * Get children objects given a specific category_pid
     *
     * @var int $category_pid id of the parent which children we want to retreive
     * @return array of icms_ipf_Object
     */
    public function getChildrenOf($category_pid=0) {
        return isset($this->_objects[$category_pid]) ? $this->_objects[$category_pid] : false;
    }

    /**
     * Create a row based on the item and children
     *
     * @param object    $object @link icms_ipf_Object
     * @param integer   $level  sub-level of the item
     */
    public function createTableRow($object, $level=0) {

        $aObject = array();

        $i=0;

        $aColumns = array();
        $doWeHaveActions = false;

        foreach ($this->_columns as $column) {

            $aColumn = array();

            if ($i==0) {
                $class = "head";
            } elseif ($i % 2 == 0) {
                $class = "even";
            } else {
                $class = "odd";
            }

            if ($column->_customMethodForValue && method_exists($object, $column->_customMethodForValue)) {
                $method = $column->_customMethodForValue;
                $value = $object->$method();
            } else {
                /**
                 * If the column is the identifier, then put a link on it
                 */
                if ($column->getKeyName() == $this->_objectHandler->identifierName) {
                    $value = $object->getItemLink();
                } else {
                    $value = $object->getVar($column->getKeyName());
                }
            }

            $space = '';
            if ($column->getKeyName() == $this->_objectHandler->identifierName) {
                for ($i = 0; $i < $level; $i++) {
                    $space = $space . '--';
                }
            }

            if ($space != '') {
                $space .= '&nbsp;';
            }

            $aColumn['value'] = $space . $value;
            $aColumn['class'] = $class;
            $aColumn['width'] = $column->getWidth();
            $aColumn['align'] = $column->getAlign();
            $aColumn['key'] = $column->getKeyName();

            $aColumns[] = $aColumn;
            $i++;
        }

        $aObject['columns'] = $aColumns;

        $class = $class == 'even' ? 'odd' : 'even';
        $aObject['class'] = $class;

        $actions = array();

        // Adding the custom actions if any
        foreach ($this->_custom_actions as $action) {
            if (method_exists($object, $action)) {
                $actions[] = $object->$action();
            }
        }

        $controller = new icms_ipf_Controller($this->_objectHandler);

        if (in_array('edit', $this->_actions)) {
            $actions[] = $controller->getEditItemLink($object, false, true);
        }
        if (in_array('delete', $this->_actions)) {
            $actions[] = $controller->getDeleteItemLink($object, false, true);
        }
        $aObject['actions'] = $actions;

        $this->_tpl->assign('icms_actions_column_width', count($actions) * 30);
        $aObject['id'] = $object->id();
        $this->_aObjects[] = $aObject;

        $childrenObjects = $this->getChildrenOf($object->id());

        $this->_hasActions = $this->_hasActions  ? true : count($actions) > 0;

        if ($childrenObjects) {
            $level++;
            foreach ($childrenObjects as $subObject) {
                $this->createTableRow($subObject, $level);
            }
        }
    }

    /**
     * Create all the rows
     *
     * @see icms_ipf_view_Table::createTableRows()
     */
    public function createTableRows() {
        $this->_aObjects = array();

        if (count($this->_objects) > 0) {

            foreach ($this->getChildrenOf() as $object) {
                $this->createTableRow($object);
            }

            $this->_tpl->assign('icms_persistable_objects', $this->_aObjects);
        } else {
            $colspan = count($this->_columns) + 1;
            $this->_tpl->assign('icms_colspan', $colspan);
        }
    }

    /**
     * Get all the objects, using parentid as the key
     *
     * @see icms_ipf_view_Table::fetchObjects()
     */
    public function fetchObjects() {
        $ret = $this->_objectHandler->getObjects($this->_criteria, 'parentid');
        return $ret;

    }
}