callbacks = $callbacks; $this->response = $response; } public function getResponse() { if(!$this->response) { $this->response = new SS_HTTPResponse(); } return $this->response; } public function setResponse($response) { $this->response = $response; } /** * Out of the box, the handler "CurrentForm" value, which will return the rendered form. * Non-Ajax calls will redirect back. * * @param SS_HTTPRequest $request * @param array $extraCallbacks List of anonymous functions or callables returning either a string * or SS_HTTPResponse, keyed by their fragment identifier. The 'default' key can * be used as a fallback for non-ajax responses. * @return SS_HTTPResponse * @throws SS_HTTPResponse_Exception */ public function respond(SS_HTTPRequest $request, $extraCallbacks = array()) { // Prepare the default options and combine with the others $callbacks = array_merge($this->callbacks, $extraCallbacks); $response = $this->getResponse(); $responseParts = array(); if (isset($this->fragmentOverride)) { $fragments = $this->fragmentOverride; } elseif ($fragmentStr = $request->getHeader('X-Pjax')) { $fragments = explode(',', $fragmentStr); } else { if($request->isAjax()) { throw new SS_HTTPResponse_Exception("Ajax requests to this URL require an X-Pjax header.", 400); } elseif (empty($callbacks['default'])) { throw new SS_HTTPResponse_Exception("Missing default response handler for this URL", 400); } $response->setBody(call_user_func($callbacks['default'])); return $response; } // Execute the fragment callbacks and build the response. foreach($fragments as $fragment) { if(isset($callbacks[$fragment])) { $res = call_user_func($callbacks[$fragment]); $responseParts[$fragment] = $res ? (string) $res : $res; } else { throw new SS_HTTPResponse_Exception("X-Pjax = '$fragment' not supported for this URL.", 400); } } $response->setBody(Convert::raw2json($responseParts)); $response->addHeader('Content-Type', 'text/json'); return $response; } /** * @param string $fragment * @param Callable $callback */ public function setCallback($fragment, $callback) { $this->callbacks[$fragment] = $callback; } /** * Set up fragment overriding - will completely replace the incoming fragments. * * @param array $fragments Fragments to insert. * @return $this */ public function setFragmentOverride($fragments) { if (!is_array($fragments)) { throw new InvalidArgumentException("fragments must be an array"); } $this->fragmentOverride = $fragments; return $this; } /** * @return array */ public function getFragmentOverride() { return $this->fragmentOverride; } }