<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

/**
 * Contains the Translation2_Decorator base class
 *
 * PHP versions 4 and 5
 *
 * LICENSE: Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE FREEBSD PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @category  Internationalization
 * @package   Translation2
 * @author    Lorenzo Alberton <l.alberton@quipo.it>
 * @copyright 2004-2005 Lorenzo Alberton
 * @license   http://www.debian.org/misc/bsd.license  BSD License (3 Clause)
 * @version   CVS: $Id$
 * @link      http://pear.php.net/package/Translation2
 */

/**
 * Translation2_Decorator. Base Decorator class for Translation2
 *
 * Extend this class to provide custom decorators.
 * Some decorators are already bundled with the package.
 *
 * @category  Internationalization
 * @package   Translation2
 * @author    Lorenzo Alberton <l.alberton@quipo.it>
 * @copyright 2004-2005 Lorenzo Alberton
 * @license   http://www.debian.org/misc/bsd.license  BSD License (3 Clause)
 * @link      http://pear.php.net/package/Translation2
 * @abstract
 */
class Translation2_Decorator extends Translation2
{
    // {{{ class vars

    /**
     * Translation2 object being decorated
     * @var object
     * @access protected
     */
    var $translation2;

    /**
     * @var object
     * @access protected
     */
    var $storage;

    /**
     * @var array
     * @access protected
     */
    var $lang;

    /**
     * @var string
     * @access protected
     */
    var $currentPageID;

    // }}}
    // {{{ Constructor

    /**
     * Constructor
     * Constructs the Translation2_Decorator
     *
     * @param object &$translation2 Translation2 object to decorate
     */
    function Translation2_Decorator(& $translation2)
    {
        $this->translation2 = & $translation2;
        //used for debug only
        $this->storage       = & $translation2->storage;
        $this->currentPageID = & $translation2->currentPageID;
        $this->lang          = & $translation2->lang;
    }

    // }}}
    // {{{ setOptions()

    /**
     * set Decorator options
     *
     * @param array $options decorator options
     *
     * @return self
     */
    function setOptions($options=array())
    {
        if (is_array($options)) {
            foreach ($options as $option => $value) {
                $this->setOption($option, $value);
            }
        }
        return $this;
    }

    // }}}
    // {{{ setOption()

    /**
     * set Decorator option
     *
     * @param string $option option name
     * @param mixed  $value  option value
     *
     * @return self
     */
    function setOption($option, $value=null)
    {
        if (isset($this->$option)) {
            $this->$option = $value;
        } elseif (is_a($this->translation2, 'Translation2_Decorator')) {
            $this->translation2->setOption($option, $value);
        }
        return $this;
    }

    // }}}
    // {{{ setContainerOptions()

    /**
     * Set some storage driver options
     *
     * @param array $options storage driver options
     *
     * @return void
     * @access protected
     */
    function setContainerOptions($options)
    {
        $this->storage->_parseOptions($options);
    }

    // }}}
    // {{{ getDecorator()

    /**
     * Return an instance of a decorator
     *
     * @param string $decorator Name of the decorator
     * @param object $object    instance [optional]
     *
     * @return object Decorator object reference
     * @access public
     */
    function & getDecorator($decorator)
    {
        if (func_num_args() > 1) {
            $obj = func_get_arg(1);
            $new_decorator =& $this->translation2->getDecorator($decorator, $obj);
        } else {
            $new_decorator =& $this->translation2->getDecorator($decorator, $this);
        }
        return $new_decorator;
    }

    // }}}
    // {{{ setCharset()

    /**
     * Set charset used to read/store the translations
     *
     * @param string $charset character set (encoding)
     *
     * @return PEAR_Error on failure
     */
    function setCharset($charset)
    {
        return $this->translation2->setCharset($charset);
    }

    // }}}
    // {{{ setLang()

    /**
     * Set default language
     *
     * @param string $langID language ID
     *
     * @return true|PEAR_Error
     */
    function setLang($langID)
    {
        return $this->translation2->setLang($langID);
    }

    // }}}
    // {{{ setPageID($pageID)

    /**
     * Set default page
     *
     * @param string $pageID page/group ID
     *
     * @return void
     */
    function setPageID($pageID = null)
    {
        $this->translation2->setPageID($pageID);
    }

    // }}}
    // {{{ getLang()

    /**
     * Get language info
     *
     * @param string $langID language ID
     * @param string $format ['name', 'meta', 'error_text', 'array']
     *
     * @return mixed [string | array], depending on $format
     */
    function getLang($langID=null, $format='name')
    {
        return $this->translation2->getLang($langID, $format);
    }

    // }}}
    // {{{ getLangs()

    /**
     * Get languages
     *
     * @param string $format ['ids', 'names', 'array']
     *
     * @return array
     */
    function getLangs($format='name')
    {
        return $this->translation2->getLangs($format);
    }

    // }}}
    // {{{ setParams()

    /**
     * Set parameters for next string
     *
     * @param array $params array of replacement parameters
     *
     * @return void
     */
    function setParams($params = null)
    {
        $this->translation2->setParams($params);
    }

    // }}}
    // {{{ getRaw()

    /**
     * Get translated string
     *
     * No filter is applied.
     *
     * @param string $stringID    string ID
     * @param string $pageID      page/group ID
     * @param string $langID      language ID
     * @param string $defaultText Text to display when the strings in both
     *                            the default and the fallback lang are empty
     *
     * @return string
     */
    function getRaw($stringID, $pageID = TRANSLATION2_DEFAULT_PAGEID, $langID = null, $defaultText = '')
    {
        return $this->translation2->getRaw($stringID, $pageID, $langID, $defaultText);
    }

    // }}}
    // {{{ get()

    /**
     * Get translated string
     *
     * All the filters are applied.
     *
     * @param string $stringID    string ID
     * @param string $pageID      page/group ID
     * @param string $langID      language ID
     * @param string $defaultText Text to display when the string is empty
     *               NB: This parameter is only used in the DefaultText decorator
     *
     * @return string
     */
    function get($stringID, $pageID = TRANSLATION2_DEFAULT_PAGEID, $langID = null, $defaultText = '')
    {
        return $this->translation2->get($stringID, $pageID, $langID, $defaultText);
    }

    // }}}
    // {{{ getRawPage()

    /**
     * Get the array of strings in a page
     *
     * Fetch the strings from the container, without any replacing
     *
     * @param string $pageID page/group ID
     * @param string $langID language ID
     *
     * @return array
     */
    function getRawPage($pageID = TRANSLATION2_DEFAULT_PAGEID, $langID = null)
    {
        return $this->translation2->getRawPage($pageID, $langID);
    }

    // }}}
    // {{{ getPage()

    /**
     * Same as getRawPage, but resort to fallback language and
     * replace parameters when needed
     *
     * @param string $pageID page/group ID
     * @param string $langID language ID
     *
     * @return array
     */
    function getPage($pageID = TRANSLATION2_DEFAULT_PAGEID, $langID = null)
    {
        $this->translation2->getPage($pageID, $langID);
    }

    // }}}
    // {{{ _replaceParams()

    /**
     * Replace parameters in strings
     *
     * @param mixed $strings strings where the replacements must occur
     *
     * @return mixed
     * @access protected
     */
    function _replaceParams($strings)
    {
        return $this->translation2->_replaceParams($strings);
    }

    // }}}
    // {{{ replaceEmptyStringsWithKeys()

    /**
     * Replace empty strings with their stringID
     *
     * @param array $strings array of strings to be replaced if empty
     *
     * @return array
     * @access public
     */
    function replaceEmptyStringsWithKeys($strings)
    {
        return $this->translation2->replaceEmptyStringsWithKeys($strings);
    }

    // }}}
    // {{{ getStringID()

    /**
     * Get the stringID for the given string. This method is the reverse of get().
     *
     * @param string $string This is NOT the stringID, this is a real string.
     *               The method will search for its matching stringID, and then
     *               it will return the associate string in the selected language.
     * @param string $pageID page/group ID
     *
     * @return string
     */
    function getStringID($string, $pageID = TRANSLATION2_DEFAULT_PAGEID)
    {
        return $this->translation2->getStringID($string, $pageID);
    }

    // }}}
    // {{{ __clone()

    /**
     * Clone internal object references
     *
     * This method is called automatically by PHP5
     *
     * @return void
     * @access protected
     */
    function __clone()
    {
        $this->translation2 = clone($this->translation2);
    }

    // }}}
}
?>