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      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 "chrome/renderer/printing/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 }
     56