Client Scheme Handler

// Copyright (c) 2012 The Chromium Embedded Framework 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 "cefclient/scheme_test.h" #include #include #include "include/cef_browser.h" #include "include/cef_callback.h" #include "include/cef_frame.h" #include "include/cef_resource_handler.h" #include "include/cef_response.h" #include "include/cef_request.h" #include "include/cef_scheme.h" #include "cefclient/resource_util.h" #include "cefclient/string_util.h" #include "cefclient/util.h" #if defined(OS_WIN) #include "cefclient/resource.h" #endif // Implementation of the schema handler for client:// requests. class ClientSchemeHandler : public CefResourceHandler { public: ClientSchemeHandler() : offset_(0) {} virtual bool ProcessRequest(CefRefPtr request, CefRefPtr callback) OVERRIDE { REQUIRE_IO_THREAD(); bool handled = false; AutoLock lock_scope(this); std::string url = request->GetURL(); if (strstr(url.c_str(), "handler.html") != NULL) { // Build the response html data_ = "Client Scheme Handler" "This contents of this page page are served by the " "ClientSchemeHandler class handling the client:// protocol." "
You should see an image:" "

";

      // Output a string representation of the request
      std::string dump;
      DumpRequestContents(request, dump);
      data_.append(dump);

      data_.append("

Try the test form:" ""); handled = true; // Set the resulting mime type mime_type_ = "text/html"; } else if (strstr(url.c_str(), "client.png") != NULL) { // Load the response image #if defined(OS_WIN) DWORD dwSize; LPBYTE pBytes; if (LoadBinaryResource(IDS_LOGO, dwSize, pBytes)) { data_ = std::string(reinterpret_cast(pBytes), dwSize); handled = true; // Set the resulting mime type mime_type_ = "image/jpg"; } #elif defined(OS_MACOSX) || defined(OS_LINUX) if (LoadBinaryResource("logo.png", data_)) { handled = true; // Set the resulting mime type mime_type_ = "image/png"; } #else #error "Unsupported platform" #endif } if (handled) { // Indicate the headers are available. callback->Continue(); return true; } return false; } virtual void GetResponseHeaders(CefRefPtr response, int64& response_length, CefString& redirectUrl) OVERRIDE { REQUIRE_IO_THREAD(); ASSERT(!data_.empty()); response->SetMimeType(mime_type_); response->SetStatus(200); // Set the resulting response length response_length = data_.length(); } virtual void Cancel() OVERRIDE { REQUIRE_IO_THREAD(); } virtual bool ReadResponse(void* data_out, int bytes_to_read, int& bytes_read, CefRefPtr callback) OVERRIDE { REQUIRE_IO_THREAD(); bool has_data = false; bytes_read = 0; AutoLock lock_scope(this); if (offset_ < data_.length()) { // Copy the next block of data into the buffer. int transfer_size = std::min(bytes_to_read, static_cast(data_.length() - offset_)); memcpy(data_out, data_.c_str() + offset_, transfer_size); offset_ += transfer_size; bytes_read = transfer_size; has_data = true; } return has_data; } private: std::string data_; std::string mime_type_; size_t offset_; IMPLEMENT_REFCOUNTING(ClientSchemeHandler); IMPLEMENT_LOCKING(ClientSchemeHandler); }; // Implementation of the factory for for creating schema handlers. class ClientSchemeHandlerFactory : public CefSchemeHandlerFactory { public: // Return a new scheme handler instance to handle the request. virtual CefRefPtr Create(CefRefPtr browser, CefRefPtr frame, const CefString& scheme_name, CefRefPtr request) OVERRIDE { REQUIRE_IO_THREAD(); return new ClientSchemeHandler(); } IMPLEMENT_REFCOUNTING(ClientSchemeHandlerFactory); }; void InitSchemeTest() { CefRegisterCustomScheme("client", true, false, false); CefRegisterSchemeHandlerFactory("client", "tests", new ClientSchemeHandlerFactory()); } void RunSchemeTest(CefRefPtr browser) { browser->GetMainFrame()->LoadURL("client://tests/handler.html"); }