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added class OC_HOOK to base.php. It is in base.php because it is needed 

very ofter and it is quite small.
This commit is contained in:
Jakob Sack 2011-03-29 20:21:00 +02:00
parent e83d801c71
commit d3502315bd
1 changed files with 66 additions and 12 deletions
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78
lib/base.php
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@ -280,20 +280,74 @@ class OC_UTIL {
die($error);
}
}
/**
* check if we need to use the layout optimized for smaller screen, currently only checks for iPhone/Android
* @return bool
*/
public static function hasSmallScreen(){
$userAgent=strtolower($_SERVER['HTTP_USER_AGENT']);
if(strpos($userAgent,'android') or strpos($userAgent,'iphone') or strpos($userAgent,'ipod')){//todo, add support for more devices
return true;
}
return false;
}
}
/**
* This class manages the hooks. It basically provides two functions: adding
* slots and emitting signals.
*/
class OC_HOOK{
static private $registered = array();
/**
* @brief connects a function to a hook
* @param $signalclass class name of emitter
* @param $signalname name of signal
* @param $slotclass class name of slot
* @param $slotname name of slot
* @returns true/false
*
* This function makes it very easy to connect to use hooks.
*
* TODO: write example
*/
public function connect( $signalclass, $signalname, $slotclass, $slotname ){
// Cerate the data structure
if( !array_key_exists( $signalclass, self::$registered )){
self::$registered[$signalclass] = array();
}
if( !array_key_exists( $signalname, self::$registered[$signalclass] )){
self::$registered[$signalclass][$signalname] = array();
}
// register hook
self::$registered[$signalclass][$signalname][] = array(
"class" => $slotclass,
"name" => $slotname );
// No chance for failure ;-)
return true;
}
/**
* @brief emitts a signal
* @param $signalclass class name of emitter
* @param $signalname name of signal
* @param $params defautl: array() array with additional data
* @returns true if slots exists or false if not
*
* Emits a signal. To get data from the slot use references!
*
* TODO: write example
*/
public function emit( $signalclass, $signalname, $params = array()){
// Return false if there are no slots
if( !array_key_exists( $signalclass, self::$registered )){
return false;
}
if( !array_key_exists( $signalname, self::$registered[$signalclass] )){
return false;
}
// Call all slots
foreach( $registered[$signalclass][$signalname] as $i ){
call_user_func( array( $i["class"], $i["name"] ), $params );
}
// return true
return true;
}
}
/**
* Class for database access