WebSocket Pepper API: C++ utility class implementation.

ppapi/cpp/helper/dev/websocket_api_dev.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/cpp/helper/dev/websocket_api_dev.h"
+
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/pp_macros.h"
+#include "ppapi/cpp/completion_callback.h"
+#include "ppapi/cpp/dev/websocket_dev.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/module_impl.h"
+#include "ppapi/cpp/var.h"
+
+namespace pp {
+
+namespace helper {
+
+class WebSocketAPI_Dev::Implement : public WebSocket_Dev {
+ public:
+  Implement(Instance* instance, WebSocketAPI_Dev* api)
+      : WebSocket_Dev(instance),
+        api_(api),
+        callback_factory_(PP_ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+  }
+
+  ~Implement() {}
+
+  int32_t Connect(const Var& url, const Var protocols[],
+                  uint32_t protocol_count) {
+    CompletionCallback callback =
+        callback_factory_.NewOptionalCallback(&Implement::DidConnect);
+    int32_t result =
+        WebSocket_Dev::Connect(url, protocols, protocol_count, callback);
+    if (result != PP_OK_COMPLETIONPENDING) {
+      // Consumes callback here and uses PP_ERROR_ABORTED instead of result
+      // in order to avoid side effects in DidConnect.
+      callback.Run(PP_ERROR_ABORTED);
+    }
+    return result;
+  }
+
+  int32_t Close(uint16_t code, const Var& reason) {
+    CompletionCallback callback =
+        callback_factory_.NewOptionalCallback(&Implement::DidClose);
+    int32_t result = WebSocket_Dev::Close(code, reason, callback);
+    if (result != PP_OK_COMPLETIONPENDING) {
+      // Consumes callback here and uses PP_ERROR_ABORTED instead of result
+      // in order to avoid side effects in DidClose.
+      callback.Run(PP_ERROR_ABORTED);
+    }
+    return result;
+  }
+
+  void Receive() {
+    int32_t result;
+    do {
+      CompletionCallback callback =
+          callback_factory_.NewOptionalCallback(&Implement::DidReceive);
+      result = WebSocket_Dev::ReceiveMessage(&receive_message_var_, callback);
+      if (result != PP_OK_COMPLETIONPENDING)
+        callback.Run(result);
+    } while (result == PP_OK);
+  }
+
+  void DidConnect(int32_t result) {
+    if (result == PP_OK) {
+      api_->OnOpen();
+      Receive();
+    } else if (result != PP_ERROR_ABORTED) {
+      DidClose(result);
+    }
+  }
+
+  void DidReceive(int32_t result) {
+    if (result == PP_OK) {
+      api_->OnMessage(receive_message_var_);
+      Receive();
+    } else if (result != PP_ERROR_ABORTED) {
+      DidClose(result);
+    }
+  }
+
+  void DidClose(int32_t result) {
+    if (result == PP_ERROR_ABORTED)
+      return;
+    bool was_clean = GetCloseWasClean() && result == PP_OK;
+    if (!was_clean)
+      api_->OnError();
+    api_->OnClose(was_clean, GetCloseCode(), GetCloseReason());
+  }
+
+ private:
+  WebSocketAPI_Dev* api_;
+  CompletionCallbackFactory<Implement> callback_factory_;
+  Var receive_message_var_;
+};
+
+WebSocketAPI_Dev::WebSocketAPI_Dev(Instance* instance)
+    : impl_(new Implement(instance, PP_ALLOW_THIS_IN_INITIALIZER_LIST(this))) {
+}
+
+WebSocketAPI_Dev::~WebSocketAPI_Dev() {
+  delete impl_;
+}
+
+int32_t WebSocketAPI_Dev::Connect(const Var& url, const Var protocols[],
+                                  uint32_t protocol_count) {
+  return impl_->Connect(url, protocols, protocol_count);
+}
+
+int32_t WebSocketAPI_Dev::Close(uint16_t code, const Var& reason) {
+  return impl_->Close(code, reason);
+}
+
+int32_t WebSocketAPI_Dev::Send(const Var& data) {
+  return impl_->SendMessage(data);
+}
+
+uint64_t WebSocketAPI_Dev::GetBufferedAmount() {
+  return impl_->GetBufferedAmount();
+}
+
+Var WebSocketAPI_Dev::GetExtensions() {
+  return impl_->GetExtensions();
+}
+
+Var WebSocketAPI_Dev::GetProtocol() {
+  return impl_->GetProtocol();
+}
+
+PP_WebSocketReadyState_Dev WebSocketAPI_Dev::GetReadyState() {
+  return impl_->GetReadyState();
+}
+
+Var WebSocketAPI_Dev::GetURL() {
+  return impl_->GetURL();
+}
+
+}  // namespace helper
+
+}  // namespace pp