/**
* Function: mergeChildrenImpl
*
* Clones the children of the source cell into the given target cell in
* this model and adds an entry to the mapping that maps from the source
* cell to the target cell with the same id or the clone of the source cell
* that was inserted into this model.
*/
function mergeChildrenImpl($from, $to, $cloneAllEdges, $mapping)
{
$this->beginUpdate();
try {
$childCount = $from->getChildCount();
for ($i = 0; $i < $childCount; $i++) {
$cell = $from->getChildAt($i);
$id = $cell->getId();
$target = isset($d) && (!$this->isEdge($cell) || !$cloneAllEdges) ? $this->getCell($id) : null;
// Clones and adds the child if no cell exists for the id
if (!isset($target)) {
$clone = $cell->clone();
$clone->setId($id);
// Sets the terminals from the original cell to the clone
// because the lookup uses strings not cells in PHP
$clone->setTerminal($cell->getTerminal(true), true);
$clone->setTerminal($cell->getTerminal(false), false);
// Do *NOT* use model.add as this will move the edge away
// from the parent in updateEdgeParent if maintainEdgeParent
// is enabled in the target model
$target = $to->insert($clone);
$this->cellAdded($target);
}
// Stores the mapping for later reconnecting edges
$mapping[mxCellPath::create($cell)] = $target;
// Recurses
$this->mergeChildrenImpl($cell, $target, $cloneAllEdges, $mapping);
}
} catch (Exception $e) {
$this->endUpdate();
throw $e;
}
$this->endUpdate();
}
/**
* Function: getId
*
* Returns the ID of the specified object. This implementation
* calls <reference> first and if that returns null handles
* the object as an <mxCell> by returning their IDs using
* <mxCell.getId>. If no ID exists for the given cell, then
* an on-the-fly ID is generated using <mxCellPath.create>.
*
* Parameters:
*
* obj - Object to return the ID for.
*/
function getId($obj)
{
$id = null;
if (isset($obj)) {
$id = $this->reference($obj);
if (!isset($id) && mxCodecRegistry::getName($obj) == "mxCell") {
$id = $obj->getId();
if (!isset($id)) {
// Uses an on-the-fly Id
$id = mxCellPath::create($obj);
if (strlen($id) == 0) {
$id = "root";
}
}
}
}
return $id;
}