chrome/renderer/pepper/chrome_pdf_print_client.cc

   1 // Copyright 2014 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 "chrome/renderer/pepper/chrome_pdf_print_client.h"
   6
   7 #include "components/printing/renderer/print_web_view_helper.h"
   8 #include "content/public/renderer/pepper_plugin_instance.h"
   9 #include "content/public/renderer/render_view.h"
  10 #include "third_party/WebKit/public/web/WebDocument.h"
  11 #include "third_party/WebKit/public/web/WebElement.h"
  12 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  13 #include "third_party/WebKit/public/web/WebPluginContainer.h"
  14
  15 namespace {
  16
  17 blink::WebElement GetWebElement(PP_Instance instance_id) {
  18   content::PepperPluginInstance* instance =
  19       content::PepperPluginInstance::Get(instance_id);
  20   if (!instance)
  21     return blink::WebElement();
  22   return instance->GetContainer()->element();
  23 }
  24
  25 printing::PrintWebViewHelper* GetPrintWebViewHelper(
  26     const blink::WebElement& element) {
  27   if (element.isNull())
  28     return NULL;
  29   blink::WebView* view = element.document().frame()->view();
  30   content::RenderView* render_view = content::RenderView::FromWebView(view);
  31   return printing::PrintWebViewHelper::Get(render_view);
  32 }
  33
  34 }  // namespace
  35
  36 ChromePDFPrintClient::ChromePDFPrintClient() {
  37 }
  38 ChromePDFPrintClient::~ChromePDFPrintClient() {
  39 }
  40
  41 bool ChromePDFPrintClient::IsPrintingEnabled(PP_Instance instance_id) {
  42   blink::WebElement element = GetWebElement(instance_id);
  43   printing::PrintWebViewHelper* helper = GetPrintWebViewHelper(element);
  44   return helper && helper->IsPrintingEnabled();
  45 }
  46
  47 bool ChromePDFPrintClient::Print(PP_Instance instance_id) {
  48   blink::WebElement element = GetWebElement(instance_id);
  49   printing::PrintWebViewHelper* helper = GetPrintWebViewHelper(element);
  50   if (helper) {
  51     helper->PrintNode(element);
  52     return true;
  53   }
  54   return false;
  55 }