<?php

/**
 *
 * KnowledgeTree Community Edition
 * Document Management Made Simple
 * Copyright (C) 2008, 2009 KnowledgeTree Inc.
 * 
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 3 as published by the
 * Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * You can contact KnowledgeTree Inc., PO Box 7775 #87847, San Francisco,
 * California 94120-7775, or email info@knowledgetree.com.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "Powered by
 * KnowledgeTree" logo and retain the original copyright notice. If the display of the
 * logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
 * must display the words "Powered by KnowledgeTree" and retain the original
 * copyright notice.
 * Contributor( s): ______________________________________
 *
 */

require_once(KT_LIB_DIR . "/actions/documentviewlet.inc.php");
require_once(KT_LIB_DIR . "/workflow/workflowutil.inc.php");

// {{{ KTDocumentDetailsAction
class KTWorkflowViewlet extends KTDocumentViewlet {
    var $sName = 'ktcore.viewlets.document.workflow';

    function display_viewlet() {
        $oKTTemplating =& KTTemplating::getSingleton();
        $oTemplate =& $oKTTemplating->loadTemplate("ktcore/document/viewlets/workflow");
        if (is_null($oTemplate)) { return ""; }

        $oWorkflowState = KTWorkflowState::get($this->oDocument->getWorkflowStateId());
        if (PEAR::isError($oWorkflowState)) {
            return "";
        }

        $aDisplayTransitions = array();
        $aTransitions = KTWorkflowUtil::getTransitionsForDocumentUser($this->oDocument, $this->oUser);
        if (empty($aTransitions)) {
            return "";
        }

        // Check if the document has been checked out
        $bIsCheckedOut = $this->oDocument->getIsCheckedOut();
        $iId = $this->oDocument->getId();
        if($bIsCheckedOut){
            // If document is checked out, don't link into the workflow.
            $aDisplayTransitions = array();
        }else{
            foreach ($aTransitions as $oTransition) {
            	if(is_null($oTransition) || PEAR::isError($oTransition)){
                	continue;
                }

                $aDisplayTransitions[] = array(
                    'url' => KTUtil::ktLink('action.php', 'ktcore.actions.document.workflow', array("fDocumentId" => $iId, "action" => "quicktransition", "fTransitionId" => $oTransition->getId())),
                    'name' => $oTransition->getName(),
                );
            }
        }

		//Retreive the comment for the previous transition
		$aCommentQuery = array(
            "SELECT comment FROM document_transactions
            where transaction_namespace='ktcore.transactions.workflow_state_transition'
            AND document_id = ?
            ORDER BY id DESC LIMIT 1;"
		);
		$aCommentQuery[] = array($iId);
		$aTransitionComments = DBUtil::getResultArray($aCommentQuery);
		$oLatestTransitionComment = null;
		if(!empty($aTransitionComments))
		{
			$aRow = $aTransitionComments[0];
			$oLatestTransitionComment = $aRow['comment'];
			$iCommentPosition = strpos($oLatestTransitionComment,':'); //comment found after first colon in string

			if($iCommentPosition>0) //if comment found
			{
				$oLatestTransitionComment = substr($oLatestTransitionComment, $iCommentPosition+2, (strlen($oLatestTransitionComment)-$iCommentPosition));
			}
			else //if no comment found - i.e. first state in workflow
			{
				$oLatestTransitionComment = null;
			}
		}

        $oTemplate->setData(array(
            'context' => $this,
            'bIsCheckedOut' => $bIsCheckedOut,
            'transitions' => $aDisplayTransitions,
            'state_name' => $oWorkflowState->getName(),
			'comment' => $oLatestTransitionComment,
        ));
        return $oTemplate->render();
    }
}
// }}}


?>