visit() is called on each of the nodes in the workflow in a top-down,
depth-first fashion.
Start the processing of the workflow by calling accept() on the workflow
passing the visitor object as the sole parameter.
/**
* Overridden implementation of accept() calls
* accept on the start node.
*
* @param ezcWorkflowVisitor $visitor
*/
public function accept(ezcWorkflowVisitor $visitor)
{
$visitor->visit($this);
$this->properties['startNode']->accept($visitor);
}
/**
* Constructor.
*
* @param ezcWorkflow $workflow
*/
public function __construct(ezcWorkflow $workflow)
{
parent::__construct();
$workflow->accept($this);
}
/**
* Constructor.
*/
public function __construct()
{
parent::__construct();
$this->options = new ezcWorkflowVisitorVisualizationOptions();
}
/**
* Reimplementation of accept() calls accept on all out nodes.
*
* @param ezcWorkflowVisitor $visitor
*/
public function accept(ezcWorkflowVisitor $visitor)
{
if ($visitor->visit($this)) {
foreach ($this->outNodes as $outNode) {
$outNode->accept($visitor);
}
}
}