Delegates for the printing component

chrome/renderer/printing/print_web_view_helper.h

 // 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.
 
 #ifndef CHROME_RENDERER_PRINTING_PRINT_WEB_VIEW_HELPER_H_
 #define CHROME_RENDERER_PRINTING_PRINT_WEB_VIEW_HELPER_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 21 matching lines @@
 
 namespace blink {
 class WebFrame;
 class WebView;
 }
 
 namespace printing {
 
 struct PageSizeMargins;
 class PrepareFrameAndViewForPrint;
+class PrintWebViewHelperDelegate;
 
 // Stores reference to frame using WebVew and unique name.
 // Workaround to modal dialog issue on Linux. crbug.com/236147.
 // If WebFrame someday supports WeakPtr, we should use it here.
 class FrameReference {
  public:
   explicit FrameReference(blink::WebLocalFrame* frame);
   FrameReference();
   ~FrameReference();
 
   void Reset(blink::WebLocalFrame* frame);
 
   blink::WebLocalFrame* GetFrame();
   blink::WebView* view();
 
  private:
   blink::WebView* view_;
   blink::WebLocalFrame* frame_;
 };
 
 // PrintWebViewHelper handles most of the printing grunt work for RenderView.
 // We plan on making print asynchronous and that will require copying the DOM
 // of the document and creating a new WebView with the contents.
 class PrintWebViewHelper
     : public content::RenderViewObserver,
       public content::RenderViewObserverTracker<PrintWebViewHelper> {
  public:
-  explicit PrintWebViewHelper(content::RenderView* render_view);
+  explicit PrintWebViewHelper(content::RenderView* render_view,
+                              scoped_ptr<PrintWebViewHelperDelegate> delegate);
   ~PrintWebViewHelper() override;
 
   // Disable print preview and switch to system dialog printing even if full
   // printing is build-in. This method is used by CEF.
   static void DisablePreview();
 
   bool IsPrintingEnabled();
 
   void PrintNode(const blink::WebNode& node);
 
@@ skipping 240 matching lines @@
   // Used for scripted initiated printing blocking.
   bool is_scripted_printing_blocked_;
 
   // Let the browser process know of a printing failure. Only set to false when
   // the failure came from the browser in the first place.
   bool notify_browser_of_print_failure_;
 
   // True, when printing from print preview.
   bool print_for_preview_;
 
+  scoped_ptr<PrintWebViewHelperDelegate> delegate_;
+
   // Keeps track of the state of print preview between messages.
   // TODO(vitalybuka): Create PrintPreviewContext when needed and delete after
   // use. Now it's interaction with various messages is confusing.
   class PrintPreviewContext {
    public:
     PrintPreviewContext();
     ~PrintPreviewContext();
 
     // Initializes the print preview context. Need to be called to set
     // the |web_frame| / |web_node| to generate the print preview for.
@@ skipping 126 matching lines @@
   base::Closure on_stop_loading_closure_;
 
   base::WeakPtrFactory<PrintWebViewHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_RENDERER_PRINTING_PRINT_WEB_VIEW_HELPER_H_