/php/main/inc/lib/timeline.lib.php

<?php
/* For licensing terms, see /license.txt */
/**
 * This class provides methods for the timeline management.
 * @package chamilo.library
 * @package chamilo.timeline
 */
/**
 * Init
 */
define('TIMELINE_STATUS_ACTIVE', '1');
define('TIMELINE_STATUS_INACTIVE', '2');
/**
 * Timeline model class definition
 */
class Timeline extends Model {    
    var $table;
    var $columns = array('headline', 'type', 'start_date', 'end_date', 'text', 'media', 'media_credit', 'media_caption', 'title_slide', 'parent_id', 'status','c_id');
    var $is_course_model = true;
    
	public function __construct() {
        $this->table =  Database::get_course_table(TABLE_TIMELINE);
	}    
    
    /**
     * Get the count of elements
     */
    public function get_count() {        
        $course_id = api_get_course_int_id();
        $row = Database::select('count(*) as count', $this->table, array('where' => array('parent_id = ? AND c_id = ?' => array('0', $course_id))), 'first');
        return $row['count'];
    }     
    
    public function get_all($where_conditions = array()) {        
        return Database::select('*',$this->table, array('where'=>$where_conditions,'order' =>'headline ASC'));
    }
    
    /**
     * Displays the title + grid
     */
	public function listing() {
		// action links
		$html .= '<div class="actions">';
        //$html .= '<a href="career_dashboard.php">'.Display::return_icon('back.png',get_lang('Back'),'','32').'</a>';     	
		$html .= '<a href="'.api_get_self().'?action=add">'.Display::return_icon('add.png', get_lang('Add'),'','32').'</a>';        				
		$html .= '</div>';
        $html .= Display::grid_html('timelines');  
        return $html;
	}
    
    public function get_status_list() {
        return array(TIMELINE_STATUS_ACTIVE => get_lang('Active'), TIMELINE_STATUS_INACTIVE => get_lang('Inactive'));
    }
    
    /**
     * Returns a Form validator Obj
     * @todo the form should be auto generated
     * @param   string  url
     * @param   string  action add, edit
     * @return  obj     form validator obj 
     */
    public function return_form($url, $action) {
        $form = new FormValidator('timeline', 'post', $url);
        // Setting the form elements
        $header = get_lang('Add');        
        if ($action == 'edit') {
            $header = get_lang('Modify');
        }        
        $form->addElement('header', $header);
        $id = isset($_GET['id']) ? intval($_GET['id']) : '';
        $form->addElement('hidden', 'id', $id);
        
        $form->addElement('text', 'headline', get_lang('Name'), array('size' => '70'));
        //$form->add_html_editor('description', get_lang('Description'), false, false, array('ToolbarSet' => 'careers','Width' => '100%', 'Height' => '250'));	   
	    $status_list = $this->get_status_list();         
        $form->addElement('select', 'status', get_lang('Status'), $status_list);
        if ($action == 'edit') {
            //$form->addElement('text', 'created_at', get_lang('CreatedAt'));
            //$form->freeze('created_at');
        }                
        if ($action == 'edit') {
        	$form->addElement('style_submit_button', 'submit', get_lang('Modify'), 'class="save"');
        } else {
        	$form->addElement('style_submit_button', 'submit', get_lang('Add'), 'class="save"');
        }
        
        $form->addRule('headline', get_lang('ThisFieldIsRequired'), 'required');
    
        // Setting the defaults
        $defaults = $this->get($id);
        
        /*if (!empty($defaults['created_at'])) {
        	$defaults['created_at'] = api_convert_and_format_date($defaults['created_at']);
        }
        if (!empty($defaults['updated_at'])) {
        	$defaults['updated_at'] = api_convert_and_format_date($defaults['updated_at']);
        }*/
        $form->setDefaults($defaults);
    
        // Setting the rules
        $form->addRule('headline', get_lang('ThisFieldIsRequired'), 'required');               
		return $form;                                
    }
    
    public function return_item_form($url, $action) {	
        
        $form = new FormValidator('item_form', 'post', $url);
        // Settting the form elements
        $header = get_lang('Add');        
        if ($action == 'edit') {
            $header = get_lang('Modify');
        }        
        $form->addElement('header', $header);
        $id = isset($_GET['id']) ? intval($_GET['id']) : '';
        $parent_id = isset($_GET['parent_id']) ? intval($_GET['parent_id']) : '';
        $form->addElement('hidden', 'parent_id', $parent_id);      
        $form->addElement('hidden', 'id', $id);
        $form->addElement('text', 'headline', get_lang('Name'), array('class' => 'span4'));
        
        //@todo fix this
        $form->addElement('text', 'start_date', get_lang('StartDate'), array('size' => '70'));
        $form->addElement('text', 'end_date', get_lang('EndDate'), array('size' => '70'));
        $form->addElement('textarea', 'text', get_lang('TimelineItemText'), array('class' => 'span3'));
        $form->addElement('text', 'media', get_lang('TimelineItemMedia'), array('size' => '70'));
        $form->addElement('text', 'media_caption', get_lang('TimelineItemMediaCaption'), array('size' => '70'));
        $form->addElement('text', 'media_credit', get_lang('TimelineItemMediaCredit'), array('size' => '70'));
        $form->addElement('text', 'title_slide', get_lang('TimelineItemTitleSlide'), array('size' => '70'));
        
        $form->addRule('headline', get_lang('ThisFieldIsRequired'), 'required');
        $form->addRule('start_date', get_lang('ThisFieldIsRequired'), 'required');
       
        
        //$form->add_html_editor('description', get_lang('Description'), false, false, array('ToolbarSet' => 'careers','Width' => '100%', 'Height' => '250'));	   
	    
        if ($action == 'edit') {
            // Setting the defaults
            $defaults = $this->get($id);
        	$form->addElement('style_submit_button', 'submit', get_lang('Modify'), 'class="save"');
        } else {
        	$form->addElement('style_submit_button', 'submit', get_lang('Add'), 'class="save"');
        }
        
        /*if (!empty($defaults['created_at'])) {
        	$defaults['created_at'] = api_convert_and_format_date($defaults['created_at']);
        }
        if (!empty($defaults['updated_at'])) {
        	$defaults['updated_at'] = api_convert_and_format_date($defaults['updated_at']);
        }*/
        $form->setDefaults($defaults);
    
        // Setting the rules
        $form->addRule('headline', get_lang('ThisFieldIsRequired'), 'required');               
		return $form; 
        
    }
    
    public function save_item($params) {
        $params['c_id'] = api_get_course_int_id();        
	    $id = parent::save($params);
	    if (!empty($id)) {
	    	//event_system(LOG_CAREER_CREATE, LOG_CAREER_ID, $id, api_get_utc_datetime(), api_get_user_id());
   		}
   		return $id;   
    }
    
    public function save($params) {
        $params['c_id'] = api_get_course_int_id();
        $params['parent_id'] = '0';
        $params['type'] = 'default';
	    $id = parent::save($params);
	    if (!empty($id)) {
	    	//event_system(LOG_CAREER_CREATE, LOG_CAREER_ID, $id, api_get_utc_datetime(), api_get_user_id());
   		}
   		return $id;
    }
    
    public function delete($id) {
	    parent::delete($id);
	    //event_system(LOG_CAREER_DELETE, LOG_CAREER_ID, $id, api_get_utc_datetime(), api_get_user_id());
    }
    
    public function get_url($id) {
        return api_get_path(WEB_AJAX_PATH).'timeline.ajax.php?a=get_timeline_content&id='.intval($id);
    }
    
    public function get_timeline_content($id) {
        $timeline = array();
        $course_id = api_get_course_int_id();
        $timeline['timeline'] = $this->process_item($this->get($id));        
        $items = $this->process_items($this->get_all(array('parent_id = ? AND c_id = ? ' =>array($id, $course_id))));                
        $timeline['timeline']['date'] = $items;
        return $timeline;
    }
    
    function process_items($items) {
        foreach ($items as &$item) {
            $item = $this->process_item($item);
        }
        $new_array = array();
        foreach ($items as $item) {
            $new_array[] = $item;
        }
        return $new_array;
    }
    function process_item($item) {
        $item['startDate'] = $item['start_date'];
        unset($item['start_date']);
        if (!empty($item['end_date'])) {
            $item['endDate'] = $item['end_date'];
        } else {
            unset($item['endDate']);            
        }
        unset($item['end_date']);
        // Assets
        $item['asset'] = array( 'media'     => $item['media'],
                                'credit'    => $item['media_credit'],  
                                'caption'   => $item['media_caption'],  
         );
        
        //Cleaning items
        unset($item['id']);
        if (empty($item['type'])) {
            unset($item['type']);
        }
        unset($item['media']);
        unset($item['media_credit']);
        unset($item['media_caption']);
        unset($item['status']);
        unset($item['title_slide']);
        unset($item['parent_id']);        
        unset($item['c_id']);
        return $item;        
    }
}