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- <?php
-
- /*
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-
- */
-
- //require 'Yay/StatePredicate.php';
- //require 'Yay/States.php';
-
- /**
- * An expectation about what State a state machine is in.
- * @author Chris Corbyn <chris@w3style.co.uk>
- * @package Yay
- */
- class Yay_SimpleStatePredicate implements Yay_StatePredicate
- {
-
- /**
- * The state machine which this predicate checks.
- * @var Yay_States
- * @access private
- */
- protected $_stateMachine;
-
- /**
- * The state name to check for in the state machine.
- * @var string
- * @access private
- */
- protected $_stateName;
-
- /**
- * True if the state is wanted, false otherwise.
- * @var boolean
- * @access private
- */
- private $_is = true;
-
- /**
- * Create a new StatePredicate.
- * @param Yay_States $stateMachine
- * @param string $stateName to expect
- * @param boolean $is (negation point)
- */
- public function __construct(Yay_States $stateMachine, $stateName, $is = true)
- {
- $this->_stateMachine = $stateMachine;
- $this->_stateName = $stateName;
- $this->_is = $is;
- }
-
- /**
- * Return true if the state machine is in this state.
- * @return boolean
- */
- public function isActive()
- {
- return (($this->_is && $this->_stateMachine->getCurrentState() == $this->_stateName)
- || (!$this->_is && $this->_stateMachine->getCurrentState() != $this->_stateName));
- }
-
- /**
- * Write a description of this self describing object to Description.
- * @param Yay_Description $description
- */
- public function describeTo(Yay_Description $description)
- {
- $this->_stateMachine->describeTo($description);
- $description->appendText(sprintf(
- ' %s %s;',
- ($this->_is ? 'is' : 'is not'),
- $this->_stateName
- ));
- }
-
- }
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