classes/class.ilConditionHandlerInterface.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | 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, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/


class ilConditionHandlerInterface
{
        var $ctrl = null;

        var $lng;
        var $tpl;
        var $tree;

        var $ch_obj;
        var $target_obj;
        var $client_obj;
        var $target_id;
        var $target_type;
        var $target_title;
        var $target_ref_id;

        var $automatic_validation = true;

        function ilConditionHandlerInterface(&$gui_obj,$a_ref_id = null)
        {
                global $lng,$tpl,$tree,$ilCtrl;

                include_once "./classes/class.ilConditionHandler.php";

                $this->ch_obj =& new ilConditionHandler();

                $this->ctrl =& $ilCtrl;
                $this->gui_obj =& $gui_obj;
                $this->lng =& $lng;
                $this->tpl =& $tpl;
                $this->tree =& $tree;
                
                if($a_ref_id)
                {
                        $this->target_obj =& ilObjectFactory::getInstanceByRefId($a_ref_id);
                }
                else
                {
                        $this->target_obj =& $this->gui_obj->object;
                }

                // this only works for ilObject derived objects (other objects
                // should call set() methods manually   
                if (is_object($this->target_obj))
                {
                        $this->setTargetId($this->target_obj->getId());
                        $this->setTargetRefId($this->target_obj->getRefId());
                        $this->setTargetType($this->target_obj->getType());
                        $this->setTargetTitle($this->target_obj->getTitle());
                }
                
        }

        function setBackButtons($a_btn_arr)
        {
                $_SESSION['precon_btn'] = $a_btn_arr;
        }
        function getBackButtons()
        {
                return $_SESSION['precon_btn'] ? $_SESSION['precon_btn'] : array();
        }

        function &executeCommand()
        {
                $next_class = $this->ctrl->getNextClass($this);
                $cmd = $this->ctrl->getCmd();
                switch ($next_class)
                {
                        default:
                                if (empty($cmd))
                                {
                                        $cmd = "view";
                                }
                                $this->$cmd();
                                break;
                }
        }

        function setAutomaticValidation($a_status)
        {
                $this->automatic_validation = $a_status;
        }
        function getAutomaticValidation()
        {
                return $this->automatic_validation;
        }

        
        function setTargetId($a_target_id)
        {
                $this->target_id = $a_target_id;
        }
        
        function getTargetId()
        {
                return $this->target_id;
        }

        function setTargetRefId($a_target_ref_id)
        {
                $this->target_ref_id = $a_target_ref_id;
        }
        
        function getTargetRefId()
        {
                return $this->target_ref_id;
        }

        function setTargetType($a_target_type)
        {
                $this->target_type = $a_target_type;
        }
        
        function getTargetType()
        {
                return $this->target_type;
        }

        function setTargetTitle($a_target_title)
        {
                $this->target_title = $a_target_title;
        }
        
        function getTargetTitle()
        {
                return $this->target_title;
        }

        function chi_init(&$chi_target_obj,$a_ref_id = null)
        {
                echo 'deprecated';
                
                include_once "./classes/class.ilConditionHandler.php";

                $this->ch_obj =& new ilConditionHandler();

                if($a_ref_id)
                {
                        $this->target_obj =& ilObjectFactory::getInstanceByRefId($a_ref_id);
                }
                else
                {
                        $this->target_obj =& $this->object;
                }

                return true;
        }

        function listConditions()
        {
                global $rbacsystem;

                $this->lng->loadLanguageModule('crs');

                $this->tpl->addBlockfile('ADM_CONTENT','adm_content','tpl.condition_handler_edit.html');

                // No conditions => show add button and exit
                if(!count($conditions = $this->__getConditionsOfTarget()))
                {
                        $this->tpl->addBlockfile("BUTTONS", "buttons", "tpl.buttons.html");
                        $this->tpl->setCurrentBlock("btn_cell");
                        $this->tpl->setVariable("BTN_LINK",$this->ctrl->getLinkTarget($this,'selector'));
                        $this->tpl->setVariable("BTN_TXT",$this->lng->txt("add_condition"));
                        $this->tpl->parseCurrentBlock();

                        sendInfo($this->lng->txt('no_conditions_found'));
                        return true;
                }

                $tpl =& new ilTemplate("tpl.table.html", true, true);
                $tpl->setCurrentBlock("tbl_form_header");
                $tpl->setVariable("FORMACTION",$this->ctrl->getFormAction($this));

                $tpl->setVariable("WIDTH",'width="60%"');
                $tpl->parseCurrentBlock();

                $tpl->setCurrentBlock("tbl_action_row");
                $tpl->setVariable("COLUMN_COUNTS",4);
                $tpl->setVariable("IMG_ARROW", ilUtil::getImagePath("arrow_downright.gif"));

                
                $tpl->setCurrentBlock("tbl_action_btn");
                $tpl->setVariable("BTN_NAME","delete");
                $tpl->setVariable("BTN_VALUE",$this->lng->txt("delete"));
                $tpl->parseCurrentBlock();
                
                $tpl->setCurrentBlock("plain_button");
                $tpl->setVariable("PBTN_NAME","selector");
                $tpl->setVariable("PBTN_VALUE",$this->lng->txt("add_condition"));
                $tpl->parseCurrentBlock();

                $tpl->setCurrentBlock("tbl_action_row");
                $tpl->setVariable("TPLPATH",$this->tpl->tplPath);
                $tpl->parseCurrentBlock();

                $tpl->setCurrentBlock("tbl_action_row");

                $tpl->addBlockfile("TBL_CONTENT", "tbl_content", "tpl.condition_handler_row.html");

                $counter = 0;
                #foreach(ilConditionHandler::_getConditionsOfTarget($this->getTargetId(), $this->getTargetType()) as $condition)
                foreach($conditions as $condition)
                {
                        $tmp_obj =& ilObjectFactory::getInstanceByRefId($condition['trigger_ref_id']);

                        $tpl->setCurrentBlock("tbl_content");
                        $tpl->setVariable("CHECKBOX",ilUtil::formCheckbox(0,"conditions[]",$condition['id']));
                        $tpl->setVariable("OBJ_TITLE",$tmp_obj->getTitle());
                        $tpl->setVariable("OBJ_DESCRIPTION",$tmp_obj->getDescription());
                        $tpl->setVariable("ROWCOL", ilUtil::switchColor($counter++,"tblrow2","tblrow1"));

                        $tpl->setVariable("OBJ_CONDITION",$this->lng->txt('condition_'.$condition['operator']));
                        $tpl->setVariable("OBJ_CONDITION_VALUE",$condition['value'] ? $condition['value'] : $this->lng->txt('crs_not_available')); 

                        $tpl->parseCurrentBlock();
                }


                // create table
                include_once './classes/class.ilTableGUI.php';

                $tbl =& new ilTableGUI();
                $tbl->setStyle('table','std');

                // title & header columns
                $tbl->setTitle($this->getTargetTitle()." ".$this->lng->txt("preconditions"),"icon_".$this->getTargetType().".gif",
                                           $this->lng->txt("preconditions"));

                $tbl->setHeaderNames(array("",$this->lng->txt("title"),$this->lng->txt("condition"),
                                                                   $this->lng->txt("value")));
                $tbl->setHeaderVars(array("","title","condition","value"), 
                                                        array("ref_id" => $this->getTargetRefId(),
                                                                  "cmdClass" => "ilobjcoursegui",
                                                                  "cmdNode" => $_GET["cmdNode"],
                                                                  "cmd" => "cci_edit"));
                $tbl->setColumnWidth(array("1%","40%","30%","30%"));

                $tbl->setLimit($_GET["limit"]);
                $tbl->setOffset($_GET["offset"]);
                $tbl->setMaxCount(10);

                // footer
                $tbl->disable("footer");
                $tbl->disable('sort');

                // render table
                $tbl->setTemplate($tpl);
                $tbl->render();

                $this->tpl->setVariable("PRECONDITION_TABLE",$tpl->get());

                return true;
        }

        function delete()
        {
                if(!count($_POST['conditions']))
                {
                        sendInfo('no_condition_selected');
                        $this->listConditions();
                        return true;
                }

                foreach($_POST['conditions'] as $condition_id)
                {
                        $this->ch_obj->deleteCondition($condition_id);
                }
                sendInfo($this->lng->txt('condition_deleted'));
                $this->listConditions();

                return true;
        }
        
        function selector()
        {
                include_once ("classes/class.ilConditionSelector.php");

                $this->tpl->addBlockFile('ADM_CONTENT', "adm_content", "tpl.condition_selector.html");

                sendInfo($this->lng->txt("condition_select_object"));

                $exp = new ilConditionSelector($this->ctrl->getLinkTarget($this,'copySelector'));
                $exp->setExpand($_GET["condition_selector_expand"] ? $_GET["condition_selector_expand"] : $this->tree->readRootId());
                $exp->setExpandTarget($this->ctrl->getLinkTarget($this,'selector'));
                $exp->setTargetGet("ref_id");
                $exp->setRefId($this->getTargetRefId());

                $exp->addFilter('crs');
                $exp->addFilter('tst');

                $exp->setSelectableTypes($this->ch_obj->getTriggerTypes());
                $exp->setControlClass($this);
                // build html-output
                $exp->setOutput(0);

                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("EXPLORER",$exp->getOutput());
                $this->tpl->parseCurrentBlock();
        }

        function add()
        {
                // TODO: ONLY FOR REFERENCED OBJECTS
                $tmp_source_obj =& ilObjectFactory::getInstanceByRefId((int) $_GET['source_id']);

                include_once "./classes/class.ilConditionHandler.php";

                $ch_obj =& new ilConditionHandler();
                
                $operators[] = $this->lng->txt('condition_select_one');
                foreach($ch_obj->getOperatorsByTargetType($tmp_source_obj->getType()) as $operator)
                {
                        $operators[$operator] = $this->lng->txt('condition_'.$operator);
                } 

                $this->tpl->addBlockFile('ADM_CONTENT','adm_content','tpl.condition_handler_add.html');

                // does not work in the moment
                #this->tpl->setCurrentBlock("btn_cell");
                #this->tpl->setVariable("BTN_LINK",$this->ctrl->getLinkTarget($this,'selector'));
                #this->tpl->setVariable("BTN_TXT",$this->lng->txt('new_selection'));
                #this->tpl->parseCurrentBlock();

                $this->ctrl->setParameter($this,'source_id',(int) $_GET['source_id']);
                $this->tpl->setVariable("FORMACTION",$this->ctrl->getFormAction($this));
                $this->tpl->setVariable("CSS_TABLE",'std');
                $this->tpl->setVariable("WIDTH",'50%');
                $this->tpl->setVariable("TBL_TITLE_IMG",ilUtil::getImagePath('icon_'.$this->getTargetType().'.gif'));
                $this->tpl->setVariable("TBL_TITLE_ALT",$this->lng->txt('obj_',$this->getTargetType()));
                

                $this->tpl->setVariable("CONDITION_SELECT",ilUtil::formSelect('',
                                                                                                                                          "operator",
                                                                                                                                          $operators,
                                                                                                                                          false,
                                                                                                                                          true));

                $title = $this->lng->txt('add_condition').' ('.$tmp_source_obj->getTitle().')';
                unset($tmp_source_obj);

                $this->tpl->setVariable("TBL_TITLE",$title);
                
                $this->tpl->setVariable("TXT_ADD",$this->lng->txt('add_condition'));
                $this->tpl->setVariable("CMD_ADD",'assign');

                return true;
        }


        function assign()
        {
                if(!isset($_GET['source_id']))
                {
                        echo "class.ilConditionHandlerInterface: no source_id given";

                        return false;
                }
                if(!strlen($_POST['operator']))
                {
                        sendInfo($this->lng->txt('no_operator_selected'));
                        $this->add();

                        return false;
                }


                $this->ch_obj->setTargetRefId($this->getTargetRefId());
                $this->ch_obj->setTargetObjId($this->getTargetId());
                $this->ch_obj->setTargetType($this->getTargetType());
                
                // this has to be changed, if non referenced trigger are implemted
                if(!$trigger_obj =& ilObjectFactory::getInstanceByRefId((int) $_GET['source_id'],false))
                {
                        echo 'ilConditionHandler: Trigger object does not exist';
                }
                $this->ch_obj->setTriggerRefId($trigger_obj->getRefId());
                $this->ch_obj->setTriggerObjId($trigger_obj->getId());
                $this->ch_obj->setTriggerType($trigger_obj->getType());
                $this->ch_obj->setOperator($_POST['operator']);
                $this->ch_obj->setValue('');

                $this->ch_obj->enableAutomaticValidation($this->getAutomaticValidation());
                if(!$this->ch_obj->storeCondition())
                {
                        sendInfo($this->ch_obj->getErrorMessage());
                }
                else
                {
                        sendInfo($this->lng->txt('added_new_condition'));
                }

                $this->listConditions();

                return true;
        }

        function chi_update()
        {
                #if(in_array('',$_POST['operator']))
                #{
                #       sendInfo($this->lng->txt('select_one_operator'));

                #       return false;
                #}
                foreach($this->__getConditionsOfTarget() as $condition)
                {
                        $this->ch_obj->setOperator($_POST['operator'][$condition["id"]]);
                        $this->ch_obj->setValue($_POST['value'][$condition["id"]]);
                        $this->ch_obj->updateCondition($condition['id']);

                }
                sendInfo($this->lng->txt('conditions_updated'));
                
                $this->ctrl->returnToParent($this);

                return true;
        }
        function __getConditionsOfTarget()
        {
                include_once './classes/class.ilConditionHandler.php';

                foreach(ilConditionHandler::_getConditionsOfTarget($this->getTargetId(), $this->getTargetType()) as $condition)
                {
                        if($condition['operator'] == 'not_member')
                        {
                                continue;
                        }
                        else
                        {
                                $cond[] = $condition;
                        }
                }
                return $cond ? $cond : array();
        }

        function __showButtons()
        {
                if(!$this->getBackButtons())
                {
                        return false;
                }

                $this->tpl->addBlockfile("BUTTONS", "buttons", "tpl.buttons.html");
                foreach($this->getBackButtons() as $name => $link)
                {
                        $this->tpl->setCurrentBlock("btn_cell");
                        $this->tpl->setVariable("BTN_LINK",$link);
                        $this->tpl->setVariable("BTN_TXT",$this->lng->txt($name));
                        $this->tpl->parseCurrentBlock();
                }
        }

}
?>