<?php



// ------------- ~ Tango ~ ------------- \\

// File: core/class_core_framework.php

// Author: Alex Cartwright

// Created: 5th February 2007
// ------------- ~ Tango ~ ------------- \\

	class Core_framework {
		
		private $modules; # Hold module objects
		private $registry; # Keep track of all loaded core files
		
		//---
		// constructor function
		//---
		function Core_framework() {
			$this->modules = array();
			$this->registry = '';
		}
		
		//---
		// load_registry() loads the registry into the framework
		// @param object $registry
		// @return bool
		//---
		function load_registry( &$registry ) {
			if ( !is_object( $registry ) ) {
				return false;
			} else {
				$this->registry = &$registry;
			}
		}
		
		//---
		// load_core_files() will include core files and then register them
		// @param array $core_files
		// @return bool
		//---
		function load_core_files( $core_files ) {
			if ( !is_array( $core_files ) ) {
				return false;
			} else {
				foreach( $core_files as $file=>$identifier ) {
					$class_name = ucfirst( strtolower( $identifier ) );
					if ( file_exists( _CORE_DIR.'/'.$file ) ) {
						include_once( _CORE_DIR.'/'.$file );
						// Register the core file
						$this->registry->register( $identifier, &new $class_name );
					}
				}
			}
		}		
		
		//---
		// load_module() will load a module into the framework
		// @param object $module_object
		//---
		function load_module( &$module_object ) {			
			if ( !is_object( $module_object ) ) {
				return false;
			}
			$module_name = $module_object->identitfier;
			$this->modules[ $module_name ] = &$module_object;			
		}
		
		//---
		// trigger_event() will trigger an event to all loaded modules or selected modules
		// @param string $event
		// @param mixed $module
		//---
		function trigger_event( $event, $module='' ) {
			if ( empty( $module ) ) {
				// trigger event to all loaded modules
				foreach( $this->modules as $name=>$object ) {
					if ( method_exists( $object, $event ) ) {
						return $this->modules[ $name ]->$event();
					}
				}
			} else if ( is_array( $module ) ) {
				// trigger event to a selected number of modules
				foreach( $this->modules as $name=>$object ) {
					if ( in_array( $name, $module ) && method_exists( $object, $event ) ) {
						return $this->modules[ $name ]->$event():
					}
				}
			} else {
				// trigger to single module
				if ( method_exists( $this->modules[ $name ], $event ) ) {
					return $this->modules[ $name ]->$event();
				}
			}
		}
	
		//---
		// get_module() will return a modules object
		// @param string $module
		// @return object
		//---
		function get_module( $module ) {
			if ( is_object( $this->modules[ $module ] ) ) {
				return &$this->modules[ $module ];
			} else {
				return false;
			}
		}
		
	}
?>