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

components/pdf/renderer/ppb_pdf_impl.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2014 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/renderer/pepper/ppb_pdf_impl.h"
+#include "components/pdf/renderer/ppb_pdf_impl.h"
 
 #include "base/files/scoped_file.h"
 #include "base/metrics/histogram.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
-#include "chrome/common/render_messages.h"
-#include "chrome/renderer/printing/print_web_view_helper.h"
+#include "components/pdf/common/pdf_messages.h"
 #include "content/app/strings/grit/content_strings.h"

[jam, 2014/08/22 00:44:59]

why is this include there?

 #include "content/public/common/child_process_sandbox_support_linux.h"
 #include "content/public/common/referrer.h"
 #include "content/public/renderer/pepper_plugin_instance.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
 #include "grit/webkit_resources.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/private/ppb_pdf.h"
 #include "ppapi/c/trusted/ppb_browser_font_trusted.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/shared_impl/var.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebPluginContainer.h"
 #include "third_party/WebKit/public/web/WebView.h"
 #include "third_party/icu/source/i18n/unicode/usearch.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
+namespace pdf {
 namespace {
 
+PPB_PDF_Impl::PrintDelegate* print_delegate = NULL;
+
 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
 class PrivateFontFile : public ppapi::Resource {
  public:
   PrivateFontFile(PP_Instance instance, int fd)
       : Resource(ppapi::OBJECT_IS_IMPL, instance), fd_(fd) {}
 
   bool GetFontTable(uint32_t table, void* output, uint32_t* output_length) {
     size_t temp_size = static_cast<size_t>(*output_length);
     bool rv = content::GetFontTable(
         fd_.get(), table, 0 /* offset */, static_cast<uint8_t*>(output),
@@ skipping 62 matching lines @@
     {PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6, IDR_PDF_PROGRESS_BAR_6},
     {PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7, IDR_PDF_PROGRESS_BAR_7},
     {PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8, IDR_PDF_PROGRESS_BAR_8},
     {PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND,
      IDR_PDF_PROGRESS_BAR_BACKGROUND},
     {PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND,
      IDR_PDF_PAGE_INDICATOR_BACKGROUND},
     {PP_RESOURCEIMAGE_PDF_PAGE_DROPSHADOW, IDR_PDF_PAGE_DROPSHADOW},
     {PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON, IDR_PAN_SCROLL_ICON}, };
 
-#if defined(ENABLE_FULL_PRINTING)
-
-blink::WebElement GetWebElement(PP_Instance instance_id) {
-  content::PepperPluginInstance* instance =
-      content::PepperPluginInstance::Get(instance_id);
-  if (!instance)
-    return blink::WebElement();
-  return instance->GetContainer()->element();
-}
-
-printing::PrintWebViewHelper* GetPrintWebViewHelper(
-    const blink::WebElement& element) {
-  if (element.isNull())
-    return NULL;
-  blink::WebView* view = element.document().frame()->view();
-  content::RenderView* render_view = content::RenderView::FromWebView(view);
-  return printing::PrintWebViewHelper::Get(render_view);
-}
-
-bool IsPrintingEnabled(PP_Instance instance_id) {
-  blink::WebElement element = GetWebElement(instance_id);
-  printing::PrintWebViewHelper* helper = GetPrintWebViewHelper(element);
-  return helper && helper->IsPrintingEnabled();
-}
-
-#else  // ENABLE_FULL_PRINTING
-
-bool IsPrintingEnabled(PP_Instance instance_id) { return false; }
-
-#endif  // ENABLE_FULL_PRINTING
-
 PP_Var GetLocalizedString(PP_Instance instance_id,
                           PP_ResourceString string_id) {
   content::PepperPluginInstance* instance =
       content::PepperPluginInstance::Get(instance_id);
   if (!instance)
     return PP_MakeUndefined();
 
   std::string rv;
   if (string_id == PP_RESOURCESTRING_PDFGETPASSWORD) {
     rv = base::UTF16ToUTF8(l10n_util::GetStringUTF16(IDS_PDF_NEED_PASSWORD));
@@ skipping 131 matching lines @@
     return;
   instance->GetRenderView()->DidStopLoading();
 }
 
 void SetContentRestriction(PP_Instance instance_id, int restrictions) {
   content::PepperPluginInstance* instance =
       content::PepperPluginInstance::Get(instance_id);
   if (!instance)
     return;
   instance->GetRenderView()->Send(
-      new ChromeViewHostMsg_PDFUpdateContentRestrictions(
+      new PDFHostMsg_PDFUpdateContentRestrictions(
           instance->GetRenderView()->GetRoutingID(), restrictions));
 }
 
 void HistogramPDFPageCount(PP_Instance instance, int count) {
   UMA_HISTOGRAM_COUNTS_10000("PDF.PageCount", count);
 }
 
 void UserMetricsRecordAction(PP_Instance instance, PP_Var action) {
   scoped_refptr<ppapi::StringVar> action_str(
       ppapi::StringVar::FromPPVar(action));
   if (action_str)
     content::RenderThread::Get()->RecordComputedAction(action_str->value());
 }
 
 void HasUnsupportedFeature(PP_Instance instance_id) {
   content::PepperPluginInstance* instance =
       content::PepperPluginInstance::Get(instance_id);
   if (!instance)
     return;
 
   // Only want to show an info bar if the pdf is the whole tab.
   if (!instance->IsFullPagePlugin())
     return;
 
   blink::WebView* view =
       instance->GetContainer()->element().document().frame()->view();
   content::RenderView* render_view = content::RenderView::FromWebView(view);
-  render_view->Send(new ChromeViewHostMsg_PDFHasUnsupportedFeature(
+  render_view->Send(new PDFHostMsg_PDFHasUnsupportedFeature(
       render_view->GetRoutingID()));
 }
 
 void SaveAs(PP_Instance instance_id) {
   content::PepperPluginInstance* instance =
       content::PepperPluginInstance::Get(instance_id);
   if (!instance)
     return;
   GURL url = instance->GetPluginURL();
 
   content::RenderView* render_view = instance->GetRenderView();
   blink::WebLocalFrame* frame =
       render_view->GetWebView()->mainFrame()->toWebLocalFrame();
   content::Referrer referrer(frame->document().url(),
                              frame->document().referrerPolicy());
-  render_view->Send(new ChromeViewHostMsg_PDFSaveURLAs(
+  render_view->Send(new PDFHostMsg_PDFSaveURLAs(
       render_view->GetRoutingID(), url, referrer));
 }
 
 PP_Bool IsFeatureEnabled(PP_Instance instance, PP_PDFFeature feature) {
   switch (feature) {
     case PP_PDFFEATURE_HIDPI:
       return PP_TRUE;
     case PP_PDFFEATURE_PRINTING:
-      return IsPrintingEnabled(instance) ? PP_TRUE : PP_FALSE;
+      return (print_delegate && print_delegate->IsPrintingEnabled(instance))
+          ? PP_TRUE : PP_FALSE;
   }
   return PP_FALSE;
 }
 
 PP_Resource GetResourceImageForScale(PP_Instance instance_id,
                                      PP_ResourceImage image_id,
                                      float scale) {
   int res_id = 0;
   for (size_t i = 0; i < arraysize(kResourceImageMap); ++i) {
     if (kResourceImageMap[i].pp_id == image_id) {
@@ skipping 27 matching lines @@
 PP_Var ModalPromptForPassword(PP_Instance instance_id, PP_Var message) {
   content::PepperPluginInstance* instance =
       content::PepperPluginInstance::Get(instance_id);
   if (!instance)
     return PP_MakeUndefined();
 
   std::string actual_value;
   scoped_refptr<ppapi::StringVar> message_string(
       ppapi::StringVar::FromPPVar(message));
 
-  IPC::SyncMessage* msg = new ChromeViewHostMsg_PDFModalPromptForPassword(
+  IPC::SyncMessage* msg = new PDFHostMsg_PDFModalPromptForPassword(
       instance->GetRenderView()->GetRoutingID(),
       message_string->value(),
       &actual_value);
   msg->EnableMessagePumping();
   instance->GetRenderView()->Send(msg);
 
   return ppapi::StringVar::StringToPPVar(actual_value);
 }
 
 PP_Bool IsOutOfProcess(PP_Instance instance_id) { return PP_FALSE; }
@@ skipping 32 matching lines @@
     &SetLinkUnderCursor,                       //
 };
 
 }  // namespace
 
 // static
 const PPB_PDF* PPB_PDF_Impl::GetInterface() { return &ppb_pdf; }
 
 // static
 void PPB_PDF_Impl::InvokePrintingForInstance(PP_Instance instance_id) {
-#if defined(ENABLE_FULL_PRINTING)
-  blink::WebElement element = GetWebElement(instance_id);
-  printing::PrintWebViewHelper* helper = GetPrintWebViewHelper(element);
-  if (helper)
-    helper->PrintNode(element);
-#endif  // ENABLE_FULL_PRINTING
+  if (print_delegate)
+    print_delegate->Print(instance_id);
 }
+
+void PPB_PDF_Impl::SetPrintDelegate(PPB_PDF_Impl::PrintDelegate* delegate) {
+  CHECK(!print_delegate) << "There should only be a single PrintDelegate.";
+  print_delegate = delegate;
+}
+
+}  // namespace pdf