[1] | 1 | <?php |
---|
| 2 | /** |
---|
| 3 | * CSS.inc.css |
---|
| 4 | * code by strangecode :: www.strangecode.com :: this document contains copyrighted information |
---|
| 5 | * |
---|
| 6 | * Dynamically outputs cached CSS data. |
---|
| 7 | * |
---|
| 8 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
| 9 | * @version 1.0 |
---|
| 10 | */ |
---|
| 11 | class CSS { |
---|
| 12 | |
---|
| 13 | // Include these style sheets. |
---|
| 14 | var $_css_files = array(); |
---|
| 15 | |
---|
| 16 | // Cache style sheets? |
---|
| 17 | var $_params = array( |
---|
| 18 | 'cache_css' => true, |
---|
| 19 | 'character_set' => 'ISO-8859-1', |
---|
| 20 | ); |
---|
| 21 | |
---|
| 22 | /** |
---|
| 23 | * Constructor. |
---|
| 24 | */ |
---|
| 25 | function CSS() |
---|
| 26 | { |
---|
| 27 | $this->_params['character_set'] = isset($CFG->character_set) ? $CFG->character_set : $this->_params['character_set']; |
---|
| 28 | } |
---|
| 29 | |
---|
| 30 | /** |
---|
| 31 | * Set (or overwrite existing) parameters by passing an array of new parameters. |
---|
| 32 | * |
---|
| 33 | * @access public |
---|
| 34 | * |
---|
| 35 | * @param array $params Array of parameters (key => val pairs). |
---|
| 36 | */ |
---|
| 37 | function setParam($params=null) |
---|
| 38 | { |
---|
| 39 | if (isset($params) && is_array($params)) { |
---|
| 40 | // Merge new parameters with old overriding only those passed. |
---|
| 41 | $this->_params = array_merge($this->_params, $params); |
---|
| 42 | } else { |
---|
| 43 | logMsg(sprintf('Supplied argument is not an array: %s', $params), LOG_WARNING, __FILE__, __LINE__); |
---|
| 44 | } |
---|
| 45 | } |
---|
| 46 | |
---|
| 47 | /** |
---|
| 48 | * Return the value of a parameter. |
---|
| 49 | * |
---|
| 50 | * @access public |
---|
| 51 | * |
---|
| 52 | * @param string $param The key of the parameter to return. |
---|
| 53 | * |
---|
| 54 | * @return mixed Parameter value. |
---|
| 55 | */ |
---|
| 56 | function getParam($param) |
---|
| 57 | { |
---|
| 58 | return $this->_params[$param]; |
---|
| 59 | } |
---|
| 60 | |
---|
| 61 | /** |
---|
| 62 | * Add a file-path to the array of files to include as CSS. |
---|
| 63 | * |
---|
| 64 | * @access public |
---|
| 65 | * |
---|
| 66 | * @param string Full path to css file. |
---|
| 67 | * |
---|
| 68 | * @return bool True on success, false on failure. |
---|
| 69 | */ |
---|
| 70 | function setFile($file) |
---|
| 71 | { |
---|
| 72 | if (file_exists($file)) { |
---|
| 73 | $this->_css_files[] = $file; |
---|
| 74 | return true; |
---|
| 75 | } else { |
---|
| 76 | logMsg(sprintf('CSS file non-existant: %s', $file), LOG_WARNING, __FILE__, __LINE__); |
---|
| 77 | return false; |
---|
| 78 | } |
---|
| 79 | } |
---|
| 80 | |
---|
| 81 | /** |
---|
| 82 | * Output headers for CSS. |
---|
| 83 | * |
---|
| 84 | * @access public |
---|
| 85 | * |
---|
| 86 | * @return bool False if no files have been set. |
---|
| 87 | */ |
---|
| 88 | function headers() |
---|
| 89 | { |
---|
| 90 | if (empty($this->_css_files)) { |
---|
| 91 | logMsg(sprintf('CSS::headers called without specifiying any files.', null), LOG_NOTICE, __FILE__, __LINE__); |
---|
| 92 | return false; |
---|
| 93 | } |
---|
| 94 | |
---|
| 95 | // Get time of latest modified file. |
---|
| 96 | $files_mtime = array_map('filemtime', array_merge($this->_css_files, array(__FILE__))); |
---|
| 97 | sort($files_mtime, SORT_NUMERIC); |
---|
| 98 | $mtime = array_pop($files_mtime); |
---|
| 99 | |
---|
| 100 | if ($this->_params['cache_css']) { |
---|
| 101 | header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $mtime) . ' GMT'); |
---|
| 102 | header('Cache-Control: public, max-age=86400'); |
---|
| 103 | } else { |
---|
| 104 | header('Expires: -1'); |
---|
| 105 | header('Pragma: no-cache'); |
---|
| 106 | header('Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0'); |
---|
| 107 | } |
---|
| 108 | header('Content-Type: text/css; charset=' . $this->_params['character_set']); |
---|
| 109 | } |
---|
| 110 | |
---|
| 111 | /** |
---|
| 112 | * Include CSS files specified by setFile(). |
---|
| 113 | * |
---|
| 114 | * @access public |
---|
| 115 | * |
---|
| 116 | * @return bool False if no files have been set. |
---|
| 117 | */ |
---|
| 118 | function output() |
---|
| 119 | { |
---|
| 120 | if (empty($this->_css_files)) { |
---|
| 121 | logMsg(sprintf('CSS::output called without specifiying any files.', null), LOG_NOTICE, __FILE__, __LINE__); |
---|
| 122 | return false; |
---|
| 123 | } |
---|
| 124 | |
---|
| 125 | foreach ($this->_css_files as $file) { |
---|
| 126 | include $file; |
---|
| 127 | } |
---|
| 128 | } |
---|
| 129 | } |
---|
| 130 | ?> |
---|