/**
* Calculates the start and end dates for groups
*
* Loops through all group members (including members of sub-groups)
* and compares start and end dates.
*/
function calGroupRange()
{
// calculate start and end dates for groups
foreach ($this->data_gantt as $k => $v) {
// if element is a group
if ($this->data_gantt[$k]["type"] == "G") {
// ignore empty groups
if ($this->isValidGroup($k)) {
// retrieve member information for the group
foreach ($this->data_tree[$k] as $member) {
switch ($this->data_gantt[$member]["type"]) {
case "T":
BURAK_Gantt::compareDate($this->data_gantt[$k]["start"], $this->data_gantt[$member]["start"], "<");
BURAK_Gantt::compareDate($this->data_gantt[$k]["end"], $this->data_gantt[$member]["end"], ">");
$this->data_gantt[$k]["count"]++;
break;
case "M":
BURAK_Gantt::compareDate($this->data_gantt[$k]["start"], $this->data_gantt[$member]["start"], "<");
BURAK_Gantt::compareDate($this->data_gantt[$k]["end"], $this->data_gantt[$member]["start"] + 86400, ">");
$this->data_gantt[$k]["count"]++;
break;
case "G":
// ignore empty groups
if ($this->isValidGroup($member)) {
$this->data_gantt[$k]["count"]++;
$this->data_gantt[$k]["count"]++;
}
break;
}
}
}
}
}
}
