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Created: Wed, Jul 9, 8:44 PM

skin_helper.php
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	<?php
	/**
	* @version $Id: skin_helper.php 16568 2017-07-16 17:59:04Z alex $
	* @package In-Portal
	* @copyright Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
	* @license GNU/GPL
	* In-Portal is Open Source software.
	* This means that this software may have been modified pursuant
	* the GNU General Public License, and as distributed it includes
	* or is derivative of works licensed under the GNU General Public License
	* or other free or open source software licenses.
	* See http://www.in-portal.org/license for copyright notices and details.
	*/

	defined('FULL_PATH') or die('restricted access!');

	class SkinHelper extends kHelper {

	/**
	* Allows to read some skin fields and build link to admin skin file.
	* Will automatically compile skin file, when missing.
	*
	* @param array $params Tag params.
	*
	* @return string
	*/
	public function AdminSkinTag(array $params)
	{
	// Returns given field of skin.
	if ( array_key_exists('type', $params) ) {
	return $this->_getStyleField($params['type']);
	}

	if ( file_exists($this->getSkinPath()) ) {
	$ret = $this->getSkinPath(true);
	}
	else {
	/** @var kDBItem $skin */
	$skin = $this->Application->recallObject('skin.-item', null, array('skip_autoload' => true));

	$skin->Load(1, 'IsPrimary');
	$ret = $this->compile($skin) ? $this->getSkinPath(true) : '';
	}

	if ( array_key_exists('file_only', $params) && $params['file_only'] ) {
	return $ret;
	}

	$ret .= '?ts=' . adodb_date('Y-m-d_H:i:s', filemtime($this->getSkinPath()));

	return '<link rel="stylesheet" rev="stylesheet" href="' . $ret . '" type="text/css" media="screen"/>';
	}

	/**
	* Compiles given skin object
	*
	* @param kDBItem $object Skin.
	*
	* @return integer
	*/
	public function compile(kDBItem $object)
	{
	$ret = $object->GetDBField('CSS');
	$options = $object->GetDBField('Options');
	$options = unserialize($options);
	$options['base_url'] = array('Value' => rtrim(BASE_PATH, '/'));

	foreach ( $options as $key => $row ) {
	$ret = str_replace('@@' . $key . '@@', $row['Value'], $ret);
	}

	$compile_ts = adodb_mktime();
	$style_name = $this->getSkinFilename($object->GetDBField('Name'));
	$css_file = $this->_getStylesheetPath() . DIRECTORY_SEPARATOR . $style_name;

	if ( file_put_contents($css_file, $ret) === false ) {
	return false;
	}

	$sql = 'UPDATE ' . $object->TableName . '
	SET LastCompiled = ' . $compile_ts . '
	WHERE ' . $object->IDField . ' = ' . $object->GetID();
	$this->Conn->Query($sql);

	$this->Application->incrementCacheSerial('skin');
	$this->Application->incrementCacheSerial('skin', $object->GetID());

	return $compile_ts;
	}

	/**
	* Returns fields of primary admin skin
	*
	* @return array
	*/
	protected function _getStyleInfo()
	{
	$cache_key = 'primary_skin_info[%SkinSerial%]';
	$ret = $this->Application->getCache($cache_key);

	if ( $ret === false ) {
	$this->Conn->nextQueryCachable = true;
	$sql = 'SELECT *
	FROM ' . TABLE_PREFIX . 'AdminSkins
	WHERE IsPrimary = 1';
	$ret = $this->Conn->GetRow($sql);

	$this->Application->setCache($cache_key, $ret);
	}

	return $ret;
	}

	/**
	* Returns requested field value of primary admin skin
	*
	* @param string $field Field.
	*
	* @return string
	*/
	protected function _getStyleField($field)
	{
	// Old style method of calling.
	if ( $field == 'logo' ) {
	$field = 'Logo';
	}

	$style_info = $this->_getStyleInfo();

	if ( !$style_info[$field] ) {
	return '';
	}

	$image_fields = array('Logo', 'LogoBottom', 'LogoLogin');

	if ( in_array($field, $image_fields) ) {
	return $this->_getStylesheetPath(true) . '/' . $style_info[$field];
	}

	return $style_info[$field];
	}

	/**
	* Returns path, where compiled skin and it's image files are stored
	*
	* @param boolean $url Return url or path.
	*
	* @return string
	*/
	protected function _getStylesheetPath($url = false)
	{
	if ( $url ) {
	$sub_folder = str_replace(DIRECTORY_SEPARATOR, '/', WRITEBALE_BASE) . '/user_files';

	return $this->Application->BaseURL() . ltrim($sub_folder, '/');
	}

	return WRITEABLE . DIRECTORY_SEPARATOR . 'user_files';
	}

	/**
	* Returns full path to primary admin skin using given or last compiled date
	*
	* @param boolean $url Return url or path..
	*
	* @return string
	*/
	public function getSkinPath($url = false)
	{
	$style_info = $this->_getStyleInfo();
	$style_name = $this->getSkinFilename($style_info['Name']);

	return $this->_getStylesheetPath($url) . ($url ? '/' : DIRECTORY_SEPARATOR) . $style_name;
	}

	/**
	* Returns skin filename without path.
	*
	* @param string $skin_name Skin name.
	*
	* @return string
	*/
	protected function getSkinFilename($skin_name)
	{
	return 'admin-' . mb_strtolower($skin_name) . '.css';
	}

	/**
	* Deletes all compiled versions of all skins
	*
	* @return void
	*/
	public function deleteCompiled()
	{
	$files = glob($this->_getStylesheetPath() . DIRECTORY_SEPARATOR . 'admin-*.css');

	if ( $files ) {
	array_map('unlink', $files);
	}
	}

	}

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