protected function _conditions(array $step, array $params, array $data, array $options) {
		if (!$conditions = $step['conditions']) {
			return true;
		}
		$isCallable = is_callable($conditions) && !is_string($conditions);
		if ($isCallable && !$conditions($params, $data, $options)) {
			return false;
		}
		if (is_string($conditions) && !(isset($options[$conditions]) && $options[$conditions])) {
			return false;
		}

		return true;
	}
protected function _conditions(array $step, array $params, array $data, array $options) {
		if (!$conditions = $step['conditions']) {
			return true;
		}
		$isCallable = is_callable($conditions) && !is_string($conditions);
		if ($isCallable && !$conditions($params, $data, $options)) {
			return false;
		}
		if (is_string($conditions) && !(isset($options[$conditions]) && $options[$conditions])) {
			return false;
		}

		return true;
	}
protected function _conditions ( array $ step , array $ params , array $ data , array $ options ) { if ( ! $ conditions = $ step [ 'conditions' ] ) { return true ; } $ isCallable = is_callable ( $ conditions ) && ! is_string ( $ conditions ) ; if ( $ isCallable && ! $ conditions ( $ params , $ data , $ options ) ) { return false ; } if ( is_string ( $ conditions ) && ! ( isset ( $ options [ $ conditions ] ) && $ options [ $ conditions ] ) ) { return false ; } return true ; }
Evaluates a step condition to determine if the step should be executed.

@see lithium\template\View::$_steps
@param array $step The array of instructions that define a rendering step.
@param array $params The parameters associated with this rendering operation, as passed to
`render()` (filtered from the `$options` parameter).
@param array $data The associative array of template variables passed to `render()`.
@param array $options The `$options` parameter, as passed to `render()`.
@return boolean Returns `true` if the step should be executed, or `false` if the step should
be skipped. If the step array has a `'conditions'` key which is a string, it checks
to see if the rendering options (`$options`) contain a key of the same name, and if
that key evaluates to `true`. If `'conditions'` is a closure, that closure is
executed with the rendering parameters (`$params`, `$data`, and `$options`), and the
result is determined by the return value of the closure. If a step definition has no
`'conditions'` key, it is always executed.
Evaluates a step condition to determine if the step should be executed .