calendar_view.class.inc

groupoffice

<?php
/**
 * @copyright Intermesh 2005
 * @author Merijn Schering <[e-mail]>
 * @version $Revision: 1.55 $ $Date: 2006/04/10 13:21:11 $

 * 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.
 */

require_once($GO_MODULES->modules['calendar']['class_path'].'event.class.inc');

class calendar_view extends table
{

	var $current_day;
	var $current_month;
	var $current_year;

	var $clicked_day;	
	var $clicked_month;
	var $clicked_year;
	
	var $day;
	var $month;
	var $year;
	var $hour;
	var $min;
	
	var $_offset;
	var $offset;
	
	var $start_time;
	var $end_time;
	
	var $calendar_start_time;
	var $calendar_end_time;
	
	var $events;
	var $all_day_events;
	var $colspans;
	
	var $time_interval;
	
	var $return_to;
	
	var $id;
	
	var $form_name;
	
	var $timezone_offset;
	
	var $weeks = 1;
	
	
	function calendar_view($id, $day_start_hour, $day_end_hour, $time_interval, $form_name='0')
	{	
		global $GO_CONFIG, $GO_SECURITY;
		
		$this->id = $id;
		$this->form_name = $form_name;		
		
		$this->current_day = date('j', get_time());
		$this->current_month = date('n', get_time());
		$this->current_year = date('Y', get_time());
			
		$this->calendar_start_time = $day_start_hour*3600;
		$this->calendar_end_time = $day_end_hour*3600+3600;

		if(isset($_POST[$this->id]['day']))
		{
			if($this->offset != $_POST[$this->id]['offset'])
			{
				$GO_CONFIG->save_setting(
				'calendar_offset', 
				smart_addslashes($_POST[$this->id]['offset']), 
				$GO_SECURITY->user_id);
			}
			$browse_time = mktime(
				$_POST[$this->id]['hour'], 
				$_POST[$this->id]['min'], 
				0, 
				$_POST[$this->id]['month'], 
				$_POST[$this->id]['day'], 
				$_POST[$this->id]['year']);
				
			$this->offset = $_POST[$this->id]['offset'];
			
			$_SESSION[$this->id]['browse_time'] = $browse_time;	
		}else
		{
			$this->offset = $GO_CONFIG->get_setting('calendar_offset', $GO_SECURITY->user_id);
			if(!$this->offset)
			{
				$this->offset = 7;
			}	
			if(!isset($_SESSION[$this->id]['browse_time']))
			{
				$browse_time = get_time();
			}else
			{
				$browse_time = $_SESSION[$this->id]['browse_time'];
			}	
		}
		$this->_offset = $this->offset;
		//echo date('Ymd G:i', $browse_time);

		$this->year = $this->clicked_year = date("Y", $browse_time);
		$this->month = $this->clicked_month = date("n", $browse_time);
		$this->day = $this->clicked_day = date("j", $browse_time);
		$this->hour = date("H", $browse_time);
		$this->min = date("i", $browse_time);
		
		if ($this->_offset > 4)
		{
			//calculate the first day to display in the week view.
			$weekday = date("w", $browse_time);

			$tmpday = $this->day - $weekday + $_SESSION['GO_SESSION']['first_weekday'];

			if ($tmpday > $this->day)
			{
				$tmpday = $tmpday -7;
			}
			$new_time = mktime(0,0,0,$this->month, $tmpday, $this->year);
			$this->day = date("j", $new_time);
			$this->month = date('n', $new_time);
			$this->year = date('Y', $new_time);
		}
		
		
		
		if($this->_offset > 7)
		{
			$this->weeks = ceil($this->_offset/7);
			$this->_offset = 7;
		}
		
		$this->time_interval = $time_interval;
		
		$this->start_time = mktime(0,0,0,$this->month, $this->day, $this->year);
		$this->end_time = $this->start_time+($this->_offset*$this->weeks*86400);		
		
		$this->return_to = $_SERVER['HTTP_REFERER'];
	}
	
	function set_return_to($return_to)
	{
		$this->return_to = $return_to;
	}
	
	function add_holiday($name, $time)
	{
		$this->holidays[$time]=$name;
	}
	
	function get_header()
	{
		global $GO_MODULES;
		return '<script type="text/javascript" src="'.$GO_MODULES->modules['calendar']['url'].'calendar.js"></script>';
	}
	
	function add_event($event)
	{
		$timezone_offset = get_timezone_offset($event['start_time'])*3600;
		$event['start_time'] += $timezone_offset;
		$timezone_offset = get_timezone_offset($event['end_time'])*3600;
		$event['end_time'] += $timezone_offset;
		$timezone_offset = get_timezone_offset($event['repeat_end_time'])*3600;
		$event['repeat_end_time'] += $timezone_offset;

		
		if($event['start_time'] == $event['end_time'])
		{
			$event['end_time'] += 3600;
		}
		
		if($event['start_time'] < $this->end_time && $event['end_time'] > $this->start_time)
		{	
			$event['display_start_time'] = floor($event['start_time']/$this->time_interval)*$this->time_interval;
			$event['display_end_time'] = ceil($event['end_time']/$this->time_interval)*$this->time_interval;			
			
			//echo date('Ymd G:i', $event['display_start_time']);
			
			//Maybe event is out of display range
			if($event['display_start_time'] < $this->calendar_start_time)
			{
				$event['display_start_time'] = $this->calendar_start_time;
			}				
			if($event['display_end_time'] > $this->end_time)
			{
				$event['display_end_time'] = $this->end_time;
			}		
			
			if($event['all_day_event'] == '1')
			{
				for($time=$event['display_start_time'];$time<$event['display_end_time'];$time+=86400)
				{				
					$this->all_day_events[$time][] = &$event;							
				}
			}else
			{		
					
				for($time=$event['display_start_time'];$time<$event['display_end_time'];$time+=$this->time_interval)
				{				
					$this->events[$time][] = &$event;							
				}
			}
		}						
	}
	
	function calculate_colspans()
	{
		for($time=$this->calendar_start_time;$time<=$this->calendar_end_time;$time+=$this->time_interval)
		{
			for($display_day=0;$display_day<$this->_offset*$this->weeks;$display_day++)
			{			
				$current_time = mktime(0,0,$time,$this->month, $this->day+$display_day, $this->year);
				if(!isset($this->colspans[$display_day]))
				{
					$this->colspans[$display_day] = 1;
				}
				if(isset($this->events[$current_time]))
				{					
					for($n=0;$n<count($this->events[$current_time]);$n++)
					{
						if(!isset($this->events[$current_time][$n]['days'][$display_day]['position']))
						{
							if(isset($this->events[$current_time][$n-1]['days'][$display_day]['position']))
							{			
								$this->events[$current_time][$n-1]['days'][$display_day]['neighbour'] = true;					
								$this->events[$current_time][$n]['days'][$display_day]['position'] = $this->events[$current_time][$n-1]['days'][$display_day]['position']+1;								
							}else
							{
								$this->events[$current_time][$n]['days'][$display_day]['position'] = 0;
							}
						}
						if($this->events[$current_time][$n]['days'][$display_day]['position'] >= $this->colspans[$display_day])
						{
							$this->colspans[$display_day] = $this->events[$current_time][$n]['days'][$display_day]['position']+1;	
						}						
					}									
				}
			}
		}
	}
	
	function get_new_event_handler($day,$month, $year,$hour,$min)
	{
		return "new_event($year,$month,$day,$hour,$min)";
	}
	
	function get_change_view_handler($day, $month, $year, $offset=null)
	{
		$_offset = isset($_offset) ? $_offset : $this->_offset;
		return "change_view('".$this->id."','".$this->form_name."', $offset, $day, $month, $year);";
	}
	
	function get_date_handler($day, $month, $year)
	{
		return "goto_date('".$this->id."','".$this->form_name."', $day, $month, $year);";
	}
	
	function load_holidays($user_id, $calendar_id)
	{
		global $GO_MODULES;
		
		require_once($GO_MODULES->modules['calendar']['class_path'].'cal_holidays.class.inc');
		$holidays = new holidays();
		
		$end = $this->_offset+($this->weeks*7);
		for($i=0;$i<$end;$i++)
		{
		 	$current_time = mktime(0,0,0,$this->month, $this->day+$i, $this->year);
		
			if($holidays->get_holiday($user_id, $calendar_id, $current_time))
			{
				$this->holidays[$current_time]=$holidays->f('name');
			}
		}
	}
	
	function set_headings($week=0)
	{		
		$heading_width = ceil(100/$this->_offset).'%';

		$row = new table_row();
		$th = new table_heading('&nbsp;');
		//$th->set_attribute('style','width:5%');
		$row->add_cell($th);		
		
		$end = $this->_offset+($week*7);
		
		for($i=($week*7);$i<$end;$i++)
		{
			$current_time = mktime(0,0,0,$this->month, $this->day+$i, $this->year);
			$weekday = date('w', $current_time);
			
			$link = new hyperlink(
				'javascript:'.$this->get_change_view_handler($this->day+$i, $this->month, $this->year, 1), 
				$GLOBALS['full_days'][$weekday].'<br />'.	date($_SESSION['GO_SESSION']['date_format'], $current_time));
				
			if(isset($this->holidays[$current_time]))
			{
				$link->innerHTML .= '<br />'.htmlspecialchars($this->holidays[$current_time]);
			}			
			$new_time = mktime(0,0,0,$this->month, $this->day+$i, $this->year);
			$new_day = date('j', $new_time);
			$new_month = date('n', $new_time);
			$new_year = date('Y', $new_time);
			
			if($new_day==$this->current_day &&
			$new_month==$this->current_month &&
			$new_year==$this->current_year)
			{
				$link->set_attribute('class', 'HoverLinkSelected');
			}else
			{
				$link->set_attribute('class', 'HoverLink');
			}
			
			$th = new table_heading($link->get_html());	
			$th->set_attribute('style','width:'.$heading_width);