pdf: Create a separate component for using the pdf pepper plugin.

chrome/browser/ui/pdf/pdf_tab_helper.cc

-// Copyright (c) 2012 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 "chrome/browser/ui/pdf/pdf_tab_helper.h"
-
-#include "base/strings/utf_string_conversions.h"
-#include "chrome/browser/download/download_stats.h"
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_finder.h"
-#include "chrome/browser/ui/browser_window.h"
-#include "chrome/browser/ui/location_bar/location_bar.h"
-#include "chrome/browser/ui/pdf/open_pdf_in_reader_prompt_delegate.h"
-#include "chrome/browser/ui/pdf/pdf_unsupported_feature.h"
-#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
-#include "chrome/common/render_messages.h"
-#include "content/public/browser/navigation_details.h"
-
-DEFINE_WEB_CONTENTS_USER_DATA_KEY(PDFTabHelper);
-
-PDFTabHelper::PDFTabHelper(content::WebContents* web_contents)
-    : content::WebContentsObserver(web_contents) {
-}
-
-PDFTabHelper::~PDFTabHelper() {
-}
-
-void PDFTabHelper::ShowOpenInReaderPrompt(
-    scoped_ptr<OpenPDFInReaderPromptDelegate> prompt) {
-  open_in_reader_prompt_ = prompt.Pass();
-  UpdateLocationBar();
-}
-
-bool PDFTabHelper::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(PDFTabHelper, message)
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_PDFHasUnsupportedFeature,
-                        OnHasUnsupportedFeature)
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_PDFSaveURLAs, OnSaveURLAs)
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_PDFUpdateContentRestrictions,
-                        OnUpdateContentRestrictions)
-    IPC_MESSAGE_HANDLER_DELAY_REPLY(ChromeViewHostMsg_PDFModalPromptForPassword,
-                                    OnModalPromptForPassword)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void PDFTabHelper::DidNavigateMainFrame(
-    const content::LoadCommittedDetails& details,
-    const content::FrameNavigateParams& params) {
-  if (open_in_reader_prompt_.get() &&
-      open_in_reader_prompt_->ShouldExpire(details)) {
-    open_in_reader_prompt_.reset();
-    UpdateLocationBar();
-  }
-}
-
-void PDFTabHelper::UpdateLocationBar() {
-  Browser* browser = chrome::FindBrowserWithWebContents(web_contents());
-  if (!browser)
-    return;
-
-  BrowserWindow* window = browser->window();
-  if (!window)
-    return;
-
-  LocationBar* location_bar = window->GetLocationBar();
-  if (!location_bar)
-    return;
-
-  location_bar->UpdateOpenPDFInReaderPrompt();
-}
-
-void PDFTabHelper::OnHasUnsupportedFeature() {
-  PDFHasUnsupportedFeature(web_contents());
-}
-
-void PDFTabHelper::OnSaveURLAs(const GURL& url,
-                               const content::Referrer& referrer) {
-  RecordDownloadSource(DOWNLOAD_INITIATED_BY_PDF_SAVE);
-  web_contents()->SaveFrame(url, referrer);
-}
-
-void PDFTabHelper::OnUpdateContentRestrictions(int content_restrictions) {
-  CoreTabHelper* core_tab_helper =
-      CoreTabHelper::FromWebContents(web_contents());
-  // |core_tab_helper| is NULL for WebViewGuest.
-  if (core_tab_helper)
-    core_tab_helper->UpdateContentRestrictions(content_restrictions);
-}
-
-void PDFTabHelper::OnModalPromptForPasswordClosed(
-    IPC::Message* reply_message,
-    bool success,
-    const base::string16& actual_value) {
-  ChromeViewHostMsg_PDFModalPromptForPassword::WriteReplyParams(
-      reply_message, base::UTF16ToUTF8(actual_value));
-  Send(reply_message);
-}
-
-void PDFTabHelper::OnModalPromptForPassword(const std::string& prompt,
-                                            IPC::Message* reply_message) {
-  base::Callback<void(bool, const base::string16&)> callback =
-      base::Bind(&PDFTabHelper::OnModalPromptForPasswordClosed,
-                 base::Unretained(this), reply_message);
-  ShowPDFPasswordDialog(web_contents(), base::UTF8ToUTF16(prompt), callback);
-}