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158 lines
3.8 KiB
158 lines
3.8 KiB
<?php
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// +---------------------------------------------------------------------------+
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// | This file is part of the core package. |
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// | Copyright (c) laiketui.com |
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// | |
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// | For the full copyright and license information, please view the LICENSE |
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// | file that was distributed with this source code. You can also view the |
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// | LICENSE file online at http://www.laiketui.com |
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// +---------------------------------------------------------------------------+
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/**
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* ActionStack keeps a list of all requested actions and provides accessor
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* methods for retrieving individual entries.
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*
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* @package laiketui
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* @subpackage action
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*
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*/
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class ActionStack extends MojaviObject
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{
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// +-----------------------------------------------------------------------+
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// | PRIVATE VARIABLES |
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// +-----------------------------------------------------------------------+
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private
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$stack = array();
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// +-----------------------------------------------------------------------+
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// | METHODS |
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// +-----------------------------------------------------------------------+
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/**
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* Add an entry.
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*
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* @param string A module name.
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* @param string An action name.
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* @param Action An action implementation instance.
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*
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* @return void
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*
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* @author ketter (ketter@laiketui.com)
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* @since 3.0.0
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*/
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public function addEntry ($moduleName, $actionName, $actionInstance)
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{
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// create our action stack entry and add it to our stack
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$actionEntry = new ActionStackEntry($moduleName, $actionName,
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$actionInstance);
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$this->stack[] = $actionEntry;
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}
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// -------------------------------------------------------------------------
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/**
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* Retrieve the entry at a specific index.
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*
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* @param int An entry index.
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*
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* @return ActionStackEntry An action stack entry implementation.
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*
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* @author ketter (ketter@laiketui.com)
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* @since 3.0.0
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*/
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public function getEntry ($index)
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{
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$retval = null;
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if ($index > -1 && $index < count($this->stack))
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{
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$retval = $this->stack[$index];
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}
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return $retval;
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}
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// -------------------------------------------------------------------------
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/**
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* Retrieve the first entry.
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*
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* @return ActionStackEntry An action stack entry implementation.
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*
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* @author ketter (ketter@laiketui.com)
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* @since 3.0.0
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*/
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public function getFirstEntry ()
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{
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$count = count($this->stack);
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$retval = null;
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if ($count > 0)
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{
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$retval = $this->stack[0];
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}
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return $retval;
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}
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// -------------------------------------------------------------------------
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/**
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* Retrieve the last entry.
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*
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* @return ActionStackEntry An action stack entry implementation.
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*
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* @author ketter (ketter@laiketui.com)
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* @since 3.0.0
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*/
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public function getLastEntry ()
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{
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$count = count($this->stack);
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$retval = null;
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if ($count > 0)
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{
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$retval = $this->stack[$count - 1];
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}
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return $retval;
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}
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// -------------------------------------------------------------------------
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/**
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* Retrieve the size of this stack.
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*
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* @return int The size of this stack.
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*
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* @author ketter (ketter@laiketui.com)
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* @since 3.0.0
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*/
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public function getSize ()
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{
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return count($this->stack);
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}
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}
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?>
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