remove old phpgwapi datetime class from calendar, as it is no longer in api

calendar/inc/class.calendar_bo.inc.php

@@ -194,12 +194,6 @@ class calendar_bo
 	 * @var calendar_so
 	 */
 	var $so;
-	/**
-	 * Instance of the datetime class
-	 *
-	 * @var egw_datetime
-	 */
-	var $datetime;
 	/**
 	 * Instance of the categories class
 	 *
@@ -229,7 +223,6 @@ class calendar_bo
 		if ($this->debug > 0) $this->debug_message('calendar_bo::bocal() started',True);
 
 		$this->so = new calendar_so();
-		$this->datetime = $GLOBALS['egw']->datetime;
 
 		$this->common_prefs =& $GLOBALS['egw_info']['user']['preferences']['common'];
 		$this->cal_prefs =& $GLOBALS['egw_info']['user']['preferences']['calendar'];
@@ -1835,7 +1828,7 @@ class calendar_bo
 	 * @param type $event
 	 * @return array array of selected calendar fields
 	 */
-	function get_link_options ($event = array())
+	public static function get_link_options ($event = array())
 	{
 		unset($event);	// not used, but required by function signature
 		$options = array (

calendar/inc/class.calendar_ui.inc.php

@@ -46,12 +46,6 @@ class calendar_ui
 	 * @var jscalendar
 	 */
 	var $jscal;
-	/**
-	 * Reference to global datetime class
-	 *
-	 * @var egw_datetime
-	 */
-	var $datetime;
 	/**
 	 * Instance of Api\Categories class
 	 *
@@ -151,7 +145,6 @@ class calendar_ui
 		{
 			$this->bo = new calendar_bo();
 		}
-		$this->datetime = $GLOBALS['egw']->datetime;
 
 		$this->categories = new Api\Categories($this->user,'calendar');
 

calendar/inc/class.calendar_uilist.inc.php

@@ -324,8 +324,9 @@ class calendar_uilist extends calendar_ui
 				$this->last  = $search_params['end'] = $today->format('ts');
 				break;
 			case 'week':
-				$start = $this->bo->date2array($params['date'] ? $params['date'] : $this->date);
+				$start = new Api\DateTime($params['date'] ? $params['date'] : $this->date);
-				$this->first = $this->datetime->get_weekday_start($start['year'],$start['month'],$start['day']);
+				$start->setWeekstart();
+				$this->first = $start->format('ts');
 				$this->last = $this->bo->date2array($this->first);
 				$this->last['day'] += ($params['weekend'] == 'true' ? 7 : 5) - 1;
 				$this->last['hour'] = 23; $this->last['minute'] = $this->last['sec'] = 59;

calendar/inc/class.calendar_uiviews.inc.php

@@ -438,7 +438,9 @@ class calendar_uiviews extends calendar_ui
 		}
 		elseif ($this->planner_view == 'week' || $this->planner_view == 'weekN')	// weeekview
 		{
-			$this->first = $this->datetime->get_weekday_start($this->year,$this->month,$this->day);
+			$start = new Api\DateTime($this->date);
+			$start->setWeekstart();
+			$this->first = $start->format('ts');
 			$this->last = $this->bo->date2array($this->first);
 			$this->last['day'] += ($this->planner_view == 'week' ? 7 : 7 * $this->cal_prefs['multiple_weeks'])-1;
 			$this->last['hour'] = 23; $this->last['minute'] = $this->last['sec'] = 59;
@@ -527,7 +529,9 @@ class calendar_uiviews extends calendar_ui
 
 		if ($weeks)
 		{
-			$this->first = $this->datetime->get_weekday_start($this->year,$this->month,$this->day);
+			$start = new Api\DateTime($this->date);
+			$start->setWeekstart();
+			$this->first = $start->format('ts');
 			$this->last = strtotime("+$weeks weeks",$this->first) - 1;
 			$weekNavH = "$weeks weeks";
 			$navHeader = lang('Week').' '.$this->week_number($this->first).' - '.$this->week_number($this->last).': '.
@@ -579,19 +583,16 @@ class calendar_uiviews extends calendar_ui
 	 */
 	function _week_align_month(&$first,&$last,$day=1)
 	{
-		$first = $this->datetime->get_weekday_start($this->year,$this->month,$this->day=$day);
+		$start = new Api\DateTime($this->date);
-		if ($day == 1)
+		$start->setDate($this->year,$this->month,$this->day=$day);
-		{
+		$start->setWeekstart();
-			$last = $this->datetime->get_weekday_start($this->year,$this->month,
+		$first = $start->format('ts');
-				$this->datetime->days_in_month($this->month,$this->year));
+		$start->setDate($this->year,$this->month+1,$day);
-		}
+		if ($day == 1) $start->add('-1day');
-		else
+		$start->setWeekstart();
-		{
-			$last = $this->datetime->get_weekday_start($this->year,$this->month+1,$day);
-		}
 		// now we need to calculate the end of the last day of that week
 		// as simple $last += WEEK_s - 1; does NOT work, if daylight saving changes in that week!!!
-		$arr = $this->bo->date2array($last);
+		$arr = $start->format('array');
 		$arr['day'] += 6;
 		$arr['hour'] = 23;
 		$arr['min'] = $arr['sec'] = 59;
@@ -628,7 +629,9 @@ class calendar_uiviews extends calendar_ui
 		}
 		else
 		{
-			$wd_start = $this->first = $this->datetime->get_weekday_start($this->year,$this->month,$this->day);
+			$start = new Api\DateTime($this->date);
+			$start->setWeekstart();
+			$wd_start = $this->first = $start->format('ts');
 			if ($days <= 5)		// no weekend-days
 			{
 				switch($this->cal_prefs['weekdaystarts'])