<?php

/**
 * LanguageToggleBlockPlugin.inc.php
 *
 * Copyright (c) 2000-2008 John Willinsky
 * Distributed under the GNU GPL v2. For full terms see the file docs/COPYING.
 *
 * @package plugins
 *
 * Class for language selector block plugin
 *
 * $Id: LanguageToggleBlockPlugin.inc.php,v 1.2 2008/04/04 17:06:51 asmecher Exp $
 */

import('plugins.BlockPlugin');

class LanguageToggleBlockPlugin extends BlockPlugin {
	function register($category, $path) {
		$success = parent::register($category, $path);
		if ($success) {
			$this->addLocaleData();
		}
		return $success;
	}

	/**
	 * Get the supported contexts (e.g. BLOCK_CONTEXT_...) for this block.
	 * @return array
	 */
	function getSupportedContexts() {
		return array(BLOCK_CONTEXT_LEFT_SIDEBAR, BLOCK_CONTEXT_RIGHT_SIDEBAR);
	}

	/**
	 * Determine whether the plugin is enabled. Overrides parent so that
	 * the plugin will be displayed during install.
	 */
	function getEnabled() {
		if (!Config::getVar('general', 'installed')) return true;
		return parent::getEnabled();
	}

	/**
	 * Install default settings on system install.
	 * @return string
	 */
	function getInstallSitePluginSettingsFile() {
		return $this->getPluginPath() . '/settings.xml';
	}

	/**
	 * Install default settings on conference creation.
	 * @return string
	 */
	function getNewConferencePluginSettingsFile() {
		return $this->getPluginPath() . '/settings.xml';
	}

	/**
	 * Get the block context. Overrides parent so that the plugin will be
	 * displayed during install.
	 * @return int
	 */
	function getBlockContext() {
		if (!Config::getVar('general', 'installed')) return BLOCK_CONTEXT_RIGHT_SIDEBAR;
		return parent::getBlockContext();
	}

	/**
	 * Determine the plugin sequence. Overrides parent so that
	 * the plugin will be displayed during install.
	 */
	function getSeq() {
		if (!Config::getVar('general', 'installed')) return 2;
		return parent::getSeq();
	}

	/**
	 * Get the name of this plugin. The name must be unique within
	 * its category.
	 * @return String name of plugin
	 */
	function getName() {
		return 'LanguageToggleBlockPlugin';
	}

	/**
	 * Get the display name of this plugin.
	 * @return String
	 */
	function getDisplayName() {
		return Locale::translate('plugins.block.languageToggle.displayName');
	}

	/**
	 * Get a description of the plugin.
	 */
	function getDescription() {
		return Locale::translate('plugins.block.languageToggle.description');
	}

	/**
	 * Get the HTML contents for this block.
	 */
	function getContents(&$templateMgr) {
		if (!defined('SESSION_DISABLE_INIT')) {
			$conference =& Request::getConference();
			if (isset($conference)) {
				$locales =& $conference->getSupportedLocaleNames();

			} else {
				$site =& Request::getSite();
				$locales =& $site->getSupportedLocaleNames();
			}
		} else {
			$locales =& Locale::getAllLocales();
			$templateMgr->assign('languageToggleNoUser', true);
		}

		if (isset($locales) && count($locales) > 1) {
			$templateMgr->assign('enableLanguageToggle', true);
			$templateMgr->assign('languageToggleLocales', $locales);
		}

		return parent::getContents($templateMgr);
	}
}

?>