1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "content/renderer/mhtml_generator.h" 6 7 #include "content/common/view_messages.h" 8 #include "content/renderer/render_view_impl.h" 9 #include "third_party/WebKit/public/platform/WebCString.h" 10 #include "third_party/WebKit/public/web/WebPageSerializer.h" 11 12 namespace content { 13 14 MHTMLGenerator::MHTMLGenerator(RenderViewImpl* render_view) 15 : RenderViewObserver(render_view) { 16 } 17 18 MHTMLGenerator::~MHTMLGenerator() { 19 } 20 21 // RenderViewObserver implementation: 22 bool MHTMLGenerator::OnMessageReceived(const IPC::Message& message) { 23 bool handled = true; 24 IPC_BEGIN_MESSAGE_MAP(MHTMLGenerator, message) 25 IPC_MESSAGE_HANDLER(ViewMsg_SavePageAsMHTML, OnSavePageAsMHTML) 26 IPC_MESSAGE_UNHANDLED(handled = false) 27 IPC_END_MESSAGE_MAP() 28 return handled; 29 } 30 31 void MHTMLGenerator::OnSavePageAsMHTML( 32 int job_id, IPC::PlatformFileForTransit file_for_transit) { 33 file_ = IPC::PlatformFileForTransitToFile(file_for_transit); 34 int64 size = GenerateMHTML(); 35 file_.Close(); 36 NotifyBrowser(job_id, size); 37 } 38 39 void MHTMLGenerator::NotifyBrowser(int job_id, int64 data_size) { 40 render_view()->Send(new ViewHostMsg_SavedPageAsMHTML(job_id, data_size)); 41 } 42 43 // TODO(jcivelli): write the chunks in deferred tasks to give a chance to the 44 // message loop to process other events. 45 int64 MHTMLGenerator::GenerateMHTML() { 46 blink::WebCString mhtml = 47 blink::WebPageSerializer::serializeToMHTML(render_view()->GetWebView()); 48 const size_t chunk_size = 1024; 49 const char* data = mhtml.data(); 50 size_t total_bytes_written = 0; 51 while (total_bytes_written < mhtml.length()) { 52 size_t copy_size = 53 std::min(mhtml.length() - total_bytes_written, chunk_size); 54 int bytes_written = file_.Write(total_bytes_written, 55 data + total_bytes_written, copy_size); 56 if (bytes_written == -1) 57 return -1; 58 total_bytes_written += bytes_written; 59 } 60 return total_bytes_written; 61 } 62 63 } // namespace content 64
