| // 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 <algorithm> |
| |
| #include "ppapi/cpp/instance.h" |
| #include "ppapi/cpp/module.h" |
| #include "ppapi/cpp/var.h" |
| |
| // When compiling natively on Windows, PostMessage can be #define-d to |
| // something else. |
| #ifdef PostMessage |
| #undef PostMessage |
| #endif |
| |
| // This is a simple C++ Pepper plugin that demonstrates HandleMessage and |
| // PostMessage. |
| |
| // This object represents one time the page says <embed>. |
| class MyInstance : public pp::Instance { |
| public: |
| explicit MyInstance(PP_Instance instance) : pp::Instance(instance) {} |
| virtual ~MyInstance() {} |
| virtual void HandleMessage(const pp::Var& message_data); |
| }; |
| |
| // HandleMessage gets invoked when postMessage is called on the DOM element |
| // associated with this plugin instance. |
| // In this case, if we are given a string, we'll post a message back to |
| // JavaScript indicating whether or not that string is a palindrome. |
| void MyInstance::HandleMessage(const pp::Var& message_data) { |
| if (message_data.is_string()) { |
| std::string string_copy(message_data.AsString()); |
| std::reverse(string_copy.begin(), string_copy.end()); |
| bool is_palindrome(message_data.AsString() == string_copy); |
| |
| PostMessage(pp::Var(is_palindrome)); |
| } |
| } |
| |
| // This object is the global object representing this plugin library as long |
| // as it is loaded. |
| class MyModule : public pp::Module { |
| public: |
| MyModule() : pp::Module() {} |
| virtual ~MyModule() {} |
| |
| // Override CreateInstance to create your customized Instance object. |
| virtual pp::Instance* CreateInstance(PP_Instance instance) { |
| return new MyInstance(instance); |
| } |
| }; |
| |
| namespace pp { |
| |
| // Factory function for your specialization of the Module object. |
| Module* CreateModule() { |
| return new MyModule(); |
| } |
| |
| } // namespace pp |
| |