Fixing spreadsheets printing.

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/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
+#include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "content/public/renderer/render_view_observer_tracker.h"
 #include "printing/metafile_impl.h"
 #include "third_party/WebKit/public/platform/WebCanvas.h"
 #include "third_party/WebKit/public/web/WebNode.h"
 #include "third_party/WebKit/public/web/WebPrintParams.h"
 #include "ui/gfx/size.h"
 
 struct PrintMsg_Print_Params;
@@ skipping 30 matching lines @@
  private:
   WebKit::WebView* view_;
   WebKit::WebString frame_name_;
 };
 
 // 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 content::RenderViewObserverTracker<PrintWebViewHelper>,
+      public base::SupportsWeakPtr<PrintWebViewHelper> {

[Lei Zhang, 2013/09/03 20:07:26]

A couple weeks ago, there was a "let's kill SupportsWeakPtr" thread on
chromium-dev. Can we use a WeakPtrFactory instead?

[Vitaly Buka (NO REVIEWS), 2013/09/04 01:49:49]

Done.

  public:
   explicit PrintWebViewHelper(content::RenderView* render_view);
   virtual ~PrintWebViewHelper();
 
   bool IsPrintingEnabled();
 
   void PrintNode(const WebKit::WebNode& node);
 
  private:
   friend class PrintWebViewHelperTestBase;
@@ skipping 31 matching lines @@
   enum PrintPreviewRequestType {
     PRINT_PREVIEW_USER_INITIATED_ENTIRE_FRAME,
     PRINT_PREVIEW_USER_INITIATED_SELECTION,
     PRINT_PREVIEW_USER_INITIATED_CONTEXT_NODE,
     PRINT_PREVIEW_SCRIPTED  // triggered by window.print().
   };
 
   // RenderViewObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void PrintPage(WebKit::WebFrame* frame, bool user_initiated) OVERRIDE;
+  virtual void DidStartLoading() OVERRIDE;
+  virtual void DidStopLoading() OVERRIDE;
 
   // Message handlers ---------------------------------------------------------
 
   // Print the document.
   void OnPrintPages();
 
   // Print the document with the print preview frame/node.
   void OnPrintForSystemDialog();
 
   // Get |page_size| and |content_area| information from
@@ skipping 194 matching lines @@
   bool IsScriptInitiatedPrintTooFrequent(WebKit::WebFrame* frame);
 
   // Reset the counter for script initiated printing.
   // Scripted printing will be allowed to continue.
   void ResetScriptedPrintCount();
 
   // Increment the counter for script initiated printing.
   // Scripted printing will be blocked for a limited amount of time.
   void IncrementScriptedPrintCount();
 
+  // Shows scripted print preview when options from plugin are availible.
+  void ShowScriptedPrintPreview();
+
   void RequestPrintPreview(PrintPreviewRequestType type);
 
   // Checks whether print preview should continue or not.
   // Returns true if cancelling, false if continuing.
   bool CheckForCancel();
 
   // Notifies the browser a print preview page has been rendered.
   // |page_number| is 0-based.
   // For a valid |page_number| with modifiable content,
   // |metafile| is the rendered page. Otherwise |metafile| is NULL.
@@ skipping 132 matching lines @@
     base::TimeDelta document_render_time_;
     base::TimeTicks begin_time_;
 
     enum PrintPreviewErrorBuckets error_;
 
     State state_;
   };
 
   bool print_node_in_progress_;
   PrintPreviewContext print_preview_context_;
+  bool is_loading_;
+  bool is_scripted_preview_delayed_;
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_RENDERER_PRINTING_PRINT_WEB_VIEW_HELPER_H_