Allow printing/saving a plugin through right click menu, even if it's in a fr...

chrome/renderer/print_web_view_helper.h

 // Copyright (c) 2009 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_PRINT_WEB_VIEW_HELPER_H_
 #define CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 23 matching lines @@
 struct ViewHostMsg_DidPreviewDocument_Params;
 
 // Class that calls the Begin and End print functions on the frame and changes
 // the size of the view temporarily to support full page printing..
 // Do not serve any events in the time between construction and destruction of
 // this class because it will cause flicker.
 class PrepareFrameAndViewForPrint {
  public:
   PrepareFrameAndViewForPrint(const ViewMsg_Print_Params& print_params,
                               WebKit::WebFrame* frame,
+                              WebKit::WebNode* node,

[viettrungluu, 2011/01/13 01:04:40]

Here and elsewhere (where both a frame and node are given): Can |node| always be
null? (Maybe you should add a comment on that?)

                               WebKit::WebView* web_view);
   ~PrepareFrameAndViewForPrint();
 
   int GetExpectedPageCount() const {
     return expected_pages_count_;
   }
 
   bool ShouldUseBrowserOverlays() const {
     return use_browser_overlays_;
   }
@@ skipping 16 matching lines @@
 
 // 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 WebKit::WebViewClient,
                            public WebKit::WebFrameClient {
  public:
   explicit PrintWebViewHelper(RenderView* render_view);
   virtual ~PrintWebViewHelper();
 
-  void Print(WebKit::WebFrame* frame, bool script_initiated, bool is_preview);
+  void Print(WebKit::WebFrame* frame,
+             bool script_initiated,
+             bool is_preview);
+
+  void Print(WebKit::WebNode* node,

[viettrungluu, 2011/01/13 01:04:40]

I'm not thrilled by this overload. Can we name them differently?

+             bool script_initiated,
+             bool is_preview);
 
   // Is there a background print in progress?
   bool IsPrinting() {
     return print_web_view_ != NULL;
   }
 
   // Notification when printing is done - signal teardown
   void DidFinishPrinting(bool success);
 
  protected:
   bool CopyAndPrint(WebKit::WebFrame* web_frame);
 
   // Prints the page listed in |params|.
 #if defined(USE_X11)
   void PrintPage(const ViewMsg_PrintPage_Params& params,
                  const gfx::Size& canvas_size,
                  WebKit::WebFrame* frame,
                  printing::NativeMetafile* metafile);
 #else
   void PrintPage(const ViewMsg_PrintPage_Params& params,
                  const gfx::Size& canvas_size,
                  WebKit::WebFrame* frame);
 #endif
 
   // Prints all the pages listed in |params|.
   // It will implicitly revert the document to display CSS media type.
   void PrintPages(const ViewMsg_PrintPages_Params& params,
-                  WebKit::WebFrame* frame);
+                  WebKit::WebFrame* frame,
+                  WebKit::WebNode* node);
 
   // IPC::Message::Sender
   bool Send(IPC::Message* msg);
 
   int32 routing_id();
 
   // WebKit::WebViewClient override:
   virtual void didStopLoading();
 
  private:
   static void GetPageSizeAndMarginsInPoints(
       WebKit::WebFrame* frame,
       int page_index,
       const ViewMsg_Print_Params& default_params,
       double* content_width_in_points,
       double* content_height_in_points,
       double* margin_top_in_points,
       double* margin_right_in_points,
       double* margin_bottom_in_points,
       double* margin_left_in_points);
 
+  void Print(WebKit::WebFrame* frame,

[viettrungluu, 2011/01/13 01:04:40]

Maybe you should name this one differently too, to avoid confusion.
(PrintInternal?)

+             WebKit::WebNode* node,
+             bool script_initiated,
+             bool is_preview);
+
   void UpdatePrintableSizeInPrintParameters(WebKit::WebFrame* frame,
+                                            WebKit::WebNode* node,
                                             ViewMsg_Print_Params* params);
 
   // Initialize print page settings with default settings.
-  bool InitPrintSettings(WebKit::WebFrame* frame);
+  bool InitPrintSettings(WebKit::WebFrame* frame,
+                         WebKit::WebNode* node);
 
   // Get the default printer settings.
   bool GetDefaultPrintSettings(WebKit::WebFrame* frame,
+                               WebKit::WebNode* node,
                                ViewMsg_Print_Params* params);
 
   // Get final print settings from the user.
   // Return false if the user cancels or on error.
   bool GetPrintSettingsFromUser(WebKit::WebFrame* frame,
                                 int expected_pages_count,
                                 bool use_browser_overlays);
 
   // Render the frame for printing.
-  void RenderPagesForPrint(WebKit::WebFrame* frame);
+  void RenderPagesForPrint(WebKit::WebFrame* frame,
+                           WebKit::WebNode* node);
 
   // Render the frame for preview.
   void RenderPagesForPreview(WebKit::WebFrame* frame);
   void CreatePreviewDocument(const ViewMsg_PrintPages_Params& params,
       WebKit::WebFrame* frame,
       ViewHostMsg_DidPreviewDocument_Params* print_params);
 #if defined(OS_MACOSX)
   void RenderPage(const gfx::Size& page_size, const gfx::Point& content_origin,
                   const float& scale_factor, int page_number,
                   WebKit::WebFrame* frame, printing::NativeMetafile* metafile);
   bool CopyMetafileDataToSharedMem(printing::NativeMetafile* metafile,
       base::SharedMemoryHandle* shared_mem_handle);
 #endif
 
   RenderView* render_view_;
   WebKit::WebView* print_web_view_;
   scoped_ptr<ViewMsg_PrintPages_Params> print_pages_params_;
   base::Time last_cancelled_script_print_;
   int user_cancelled_scripted_print_count_;
   bool is_preview_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 #endif  // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_