args = $args;
$this->args_default = array();
$this->filters = array();
$this->labels = array();
$this->callbacks = array();
$this->_key = 'filter-'.$key;
$this->_storage = $storage;
$this->_init_args();
$this->_trash_filtr = null;
}
function get_arg( $name ) {
// try load from @storage and save
if (array_key_exists($name, $this->args)) {
return $this->args[ $name ];
} else if (array_key_exists($name, $this->args_default)) {
return $this->args_default[ $name ];
}
return null;
}
function _init_args() {
if (array_key_exists('filtr_clear', $this->args) && $this->args['filtr_clear'] == 1) {
$this->args = array();
} else {
$this->_read_args();
}
}
function add_filter( $name, $values, $default, $label = '', $callback = null ) {
$this->filters[ $name ] = $values;
$this->labels[ $name ] = ($label)? $label : $name;
$this->args_default[ $name ] = $default;
if ($callback) $this->callbacks[ $name ] = $callback;
}
function _save_args() {
if (!$this->_key) { return; }
if ($this->_storage == 'cookie') {
$this->_save_args_in_cookie();
} else {
$this->_save_args_in_session();
}
}
function _save_args_in_session() {
if (!$this->_key) { return; }
$save_args = array();
foreach ($this->filters as $name => $options) {
$arg = (isset($this->args[$name]))? $this->args[$name] : '';
if (count($options) == 1 && reset($options) == 'search') {
if ($arg != $this->args_default[$name]) {
$option = $arg;
$save_args []= ''.urlencode($name).'='.urlencode($option);
}
} else {
foreach($options as $option => $field_name) {
if (isset($this->args[$name]) && $this->args[$name] == $option) {
$save_args []= ''.urlencode($name).'='.urlencode($option);
}
}
}
}
$save_args = implode(',', $save_args);
$_SESSION[ $this->_key ] = $save_args;
}
function _save_args_in_cookie() {
if (!$this->_key) { return; }
$save_args = array();
foreach ($this->filters as $name => $options) {
$arg = (isset($this->args[$name]))? $this->args[$name] : '';
if (count($options) == 1 && reset($options) == 'search') {
if ($arg != $this->args_default[$name]) {
$option = $arg;
$save_args []= ''.urlencode($name).'='.urlencode($option);
}
} else {
foreach($options as $option => $field_name) {
if (isset($this->args[$name]) && $this->args[$name] == $option) {
$save_args []= ''.urlencode($name).'='.urlencode($option);
}
}
}
}
// if ($save_args) {
$save_args = implode(',', $save_args);
echo'';
// }
}
function _read_args($force = false) {
if (!$this->_key) { return; }
if ($this->_storage == 'cookie') {
$this->_read_args_from_cookie($force);
} else {
$this->_read_args_from_session($force);
}
}
function _read_args_from_session($force = false) {
if (!$this->_key) { return; }
if (!array_key_exists($this->_key, $_SESSION)) { return; }
$c_args = explode(',', $_SESSION[$this->_key]);
//echo'read from session c_args: '.$_SESSION[$this->_key].'
';
foreach ($c_args as $c_val) {
$c_val = explode('=', $c_val);
if (count($c_val) != 2) continue;
$name = urldecode($c_val[0]);
$option = urldecode($c_val[1]);
if ($force || !array_key_exists($name, $this->args)) {
//echo'read from session: '.$name.' / '.$this->args[ $name ].' / set '.$option.'
';
$this->args[ $name ] = $option;
}
}//end foreach
}
/**
* Read args from cookie.
*/
function _read_args_from_cookie($force = false) {
if (!$this->_key) { return; }
if (!array_key_exists($this->_key, $_COOKIE)) { return; }
$c_args = explode(',', $_COOKIE[$this->_key]);
foreach ($c_args as $c_val) {
$c_val = explode('=', $c_val);
if (count($c_val) != 2) continue;
$name = urldecode($c_val[0]);
$option = urldecode($c_val[1]);
if ($force || !array_key_exists($name, $this->args)) {
$this->args[ $name ] = $option;
}
}//end foreach
}
/**
* Print form fields. Must be inside