Linux: Pass CefBrowser to CefPrintHandler callbacks (issue #2196)

include/capi/cef_print_handler_capi.h

@@ -33,7 +33,7 @@
 // by hand. See the translator.README.txt file in the tools directory for
 // more information.
 //
-// $hash=e8f6bdc822cf4f5c32b22ba8b5cacb25823d8971$
+// $hash=ed78ca41d62dfc0cdb52828dcf795617c4e231a7$
 //
 
 #ifndef CEF_INCLUDE_CAPI_CEF_PRINT_HANDLER_CAPI_H_
@@ -85,8 +85,9 @@ typedef struct _cef_print_job_callback_t {
 } cef_print_job_callback_t;
 
 ///
-// Implement this structure to handle printing on Linux. The functions of this
+// Implement this structure to handle printing on Linux. Each browser will have
-// structure will be called on the browser process UI thread.
+// only one print job in progress at a time. The functions of this structure
+// will be called on the browser process UI thread.
 ///
 typedef struct _cef_print_handler_t {
   ///
@@ -109,6 +110,7 @@ typedef struct _cef_print_handler_t {
   // reference to |settings| outside of this callback.
   ///
   void(CEF_CALLBACK* on_print_settings)(struct _cef_print_handler_t* self,
+                                        struct _cef_browser_t* browser,
                                         struct _cef_print_settings_t* settings,
                                         int get_defaults);
 
@@ -119,6 +121,7 @@ typedef struct _cef_print_handler_t {
   ///
   int(CEF_CALLBACK* on_print_dialog)(
       struct _cef_print_handler_t* self,
+      struct _cef_browser_t* browser,
       int has_selection,
       struct _cef_print_dialog_callback_t* callback);
 
@@ -128,6 +131,7 @@ typedef struct _cef_print_handler_t {
   // the job immediately.
   ///
   int(CEF_CALLBACK* on_print_job)(struct _cef_print_handler_t* self,
+                                  struct _cef_browser_t* browser,
                                   const cef_string_t* document_name,
                                   const cef_string_t* pdf_file_path,
                                   struct _cef_print_job_callback_t* callback);
@@ -135,7 +139,8 @@ typedef struct _cef_print_handler_t {
   ///
   // Reset client state related to printing.
   ///
-  void(CEF_CALLBACK* on_print_reset)(struct _cef_print_handler_t* self);
+  void(CEF_CALLBACK* on_print_reset)(struct _cef_print_handler_t* self,
+                                     struct _cef_browser_t* browser);
 
   ///
   // Return the PDF paper size in device units. Used in combination with
@@ -143,6 +148,7 @@ typedef struct _cef_print_handler_t {
   ///
   cef_size_t(CEF_CALLBACK* get_pdf_paper_size)(
       struct _cef_print_handler_t* self,
+      struct _cef_browser_t* browser,
       int device_units_per_inch);
 } cef_print_handler_t;
 

include/cef_print_handler.h

@@ -75,8 +75,9 @@ class CefPrintJobCallback : public virtual CefBaseRefCounted {
 };
 
 ///
-// Implement this interface to handle printing on Linux. The methods of this
+// Implement this interface to handle printing on Linux. Each browser will have
-// class will be called on the browser process UI thread.
+// only one print job in progress at a time. The methods of this class will be
+// called on the browser process UI thread.
 ///
 /*--cef(source=client)--*/
 class CefPrintHandler : public virtual CefBaseRefCounted {
@@ -96,7 +97,8 @@ class CefPrintHandler : public virtual CefBaseRefCounted {
   // reference to |settings| outside of this callback.
   ///
   /*--cef()--*/
-  virtual void OnPrintSettings(CefRefPtr<CefPrintSettings> settings,
+  virtual void OnPrintSettings(CefRefPtr<CefBrowser> browser,
+                               CefRefPtr<CefPrintSettings> settings,
                                bool get_defaults) = 0;
 
   ///
@@ -105,7 +107,8 @@ class CefPrintHandler : public virtual CefBaseRefCounted {
   // printing immediately.
   ///
   /*--cef()--*/
-  virtual bool OnPrintDialog(bool has_selection,
+  virtual bool OnPrintDialog(CefRefPtr<CefBrowser> browser,
+                             bool has_selection,
                              CefRefPtr<CefPrintDialogCallback> callback) = 0;
 
   ///
@@ -114,7 +117,8 @@ class CefPrintHandler : public virtual CefBaseRefCounted {
   // immediately.
   ///
   /*--cef()--*/
-  virtual bool OnPrintJob(const CefString& document_name,
+  virtual bool OnPrintJob(CefRefPtr<CefBrowser> browser,
+                          const CefString& document_name,
                           const CefString& pdf_file_path,
                           CefRefPtr<CefPrintJobCallback> callback) = 0;
 
@@ -122,14 +126,15 @@ class CefPrintHandler : public virtual CefBaseRefCounted {
   // Reset client state related to printing.
   ///
   /*--cef()--*/
-  virtual void OnPrintReset() = 0;
+  virtual void OnPrintReset(CefRefPtr<CefBrowser> browser) = 0;
 
   ///
   // Return the PDF paper size in device units. Used in combination with
   // CefBrowserHost::PrintToPDF().
   ///
   /*--cef()--*/
-  virtual CefSize GetPdfPaperSize(int device_units_per_inch) {
+  virtual CefSize GetPdfPaperSize(CefRefPtr<CefBrowser> browser,
+                                  int device_units_per_inch) {
     return CefSize();
   }
 };

libcef/browser/printing/print_dialog_linux.cc

@@ -113,9 +113,12 @@ gfx::Size CefPrintDialogLinux::GetPdfPaperSize(
     if (browser_handler.get()) {
       CefRefPtr<CefPrintHandler> handler = browser_handler->GetPrintHandler();
       if (handler.get()) {
+        CefRefPtr<CefBrowserHostImpl> browser =
+            extensions::GetOwnerBrowserForFrame(
+                context->render_process_id(), context->render_frame_id(), NULL);
         const printing::PrintSettings& settings = context->settings();
-        CefSize cef_size =
+        CefSize cef_size = handler->GetPdfPaperSize(
-            handler->GetPdfPaperSize(settings.device_units_per_inch());
+            browser.get(), settings.device_units_per_inch());
         size.SetSize(cef_size.width, cef_size.height);
       }
     }
@@ -187,10 +190,14 @@ void CefPrintDialogLinux::ShowDialog(
 
   callback_ = callback;
 
+  CefRefPtr<CefBrowserHostImpl> browser = extensions::GetOwnerBrowserForFrame(
+      context_->render_process_id(), context_->render_frame_id(), NULL);
+
   CefRefPtr<CefPrintDialogCallbackImpl> callback_impl(
       new CefPrintDialogCallbackImpl(this));
 
-  if (!handler_->OnPrintDialog(has_selection, callback_impl.get())) {
+  if (!handler_->OnPrintDialog(browser.get(), has_selection,
+                               callback_impl.get())) {
     callback_impl->Disconnect();
     OnPrintCancel();
   }
@@ -253,7 +260,10 @@ void CefPrintDialogLinux::SetHandler() {
 
 void CefPrintDialogLinux::ReleaseHandler() {
   if (handler_.get()) {
-    handler_->OnPrintReset();
+    CefRefPtr<CefBrowserHostImpl> browser = extensions::GetOwnerBrowserForFrame(
+        context_->render_process_id(), context_->render_frame_id(), NULL);
+
+    handler_->OnPrintReset(browser.get());
     handler_ = NULL;
   }
 }
@@ -266,9 +276,12 @@ bool CefPrintDialogLinux::UpdateSettings(printing::PrintSettings* settings,
   if (!handler_.get())
     return false;
 
+  CefRefPtr<CefBrowserHostImpl> browser = extensions::GetOwnerBrowserForFrame(
+      context_->render_process_id(), context_->render_frame_id(), NULL);
+
   CefRefPtr<CefPrintSettingsImpl> settings_impl(
       new CefPrintSettingsImpl(settings, false, false));
-  handler_->OnPrintSettings(settings_impl.get(), get_defaults);
+  handler_->OnPrintSettings(browser.get(), settings_impl.get(), get_defaults);
   settings_impl->Detach(NULL);
 
   context_->InitWithSettings(*settings);
@@ -284,10 +297,13 @@ void CefPrintDialogLinux::SendDocumentToPrinter(
     return;
   }
 
+  CefRefPtr<CefBrowserHostImpl> browser = extensions::GetOwnerBrowserForFrame(
+      context_->render_process_id(), context_->render_frame_id(), NULL);
+
   CefRefPtr<CefPrintJobCallbackImpl> callback_impl(
       new CefPrintJobCallbackImpl(this));
 
-  if (!handler_->OnPrintJob(document_name, path_to_pdf_.value(),
+  if (!handler_->OnPrintJob(browser.get(), document_name, path_to_pdf_.value(),
                             callback_impl.get())) {
     callback_impl->Disconnect();
     OnJobCompleted();

libcef_dll/cpptoc/print_handler_cpptoc.cc

@@ -9,7 +9,7 @@
 // implementations. See the translator.README.txt file in the tools directory
 // for more information.
 //
-// $hash=e2a9910119dcf81b74624588d222c7781e3fdc9a$
+// $hash=80fc869800987a74f4c6e4eb202f0f5201126a76$
 //
 
 #include "libcef_dll/cpptoc/print_handler_cpptoc.h"
@@ -42,6 +42,7 @@ print_handler_on_print_start(struct _cef_print_handler_t* self,
 
 void CEF_CALLBACK
 print_handler_on_print_settings(struct _cef_print_handler_t* self,
+                                cef_browser_t* browser,
                                 struct _cef_print_settings_t* settings,
                                 int get_defaults) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
@@ -49,6 +50,10 @@ print_handler_on_print_settings(struct _cef_print_handler_t* self,
   DCHECK(self);
   if (!self)
     return;
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser);
+  if (!browser)
+    return;
   // Verify param: settings; type: refptr_diff
   DCHECK(settings);
   if (!settings)
@@ -56,11 +61,13 @@ print_handler_on_print_settings(struct _cef_print_handler_t* self,
 
   // Execute
   CefPrintHandlerCppToC::Get(self)->OnPrintSettings(
-      CefPrintSettingsCToCpp::Wrap(settings), get_defaults ? true : false);
+      CefBrowserCToCpp::Wrap(browser), CefPrintSettingsCToCpp::Wrap(settings),
+      get_defaults ? true : false);
 }
 
 int CEF_CALLBACK
 print_handler_on_print_dialog(struct _cef_print_handler_t* self,
+                              cef_browser_t* browser,
                               int has_selection,
                               cef_print_dialog_callback_t* callback) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
@@ -68,6 +75,10 @@ print_handler_on_print_dialog(struct _cef_print_handler_t* self,
   DCHECK(self);
   if (!self)
     return 0;
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser);
+  if (!browser)
+    return 0;
   // Verify param: callback; type: refptr_diff
   DCHECK(callback);
   if (!callback)
@@ -75,7 +86,7 @@ print_handler_on_print_dialog(struct _cef_print_handler_t* self,
 
   // Execute
   bool _retval = CefPrintHandlerCppToC::Get(self)->OnPrintDialog(
-      has_selection ? true : false,
+      CefBrowserCToCpp::Wrap(browser), has_selection ? true : false,
       CefPrintDialogCallbackCToCpp::Wrap(callback));
 
   // Return type: bool
@@ -84,6 +95,7 @@ print_handler_on_print_dialog(struct _cef_print_handler_t* self,
 
 int CEF_CALLBACK
 print_handler_on_print_job(struct _cef_print_handler_t* self,
+                           cef_browser_t* browser,
                            const cef_string_t* document_name,
                            const cef_string_t* pdf_file_path,
                            cef_print_job_callback_t* callback) {
@@ -92,6 +104,10 @@ print_handler_on_print_job(struct _cef_print_handler_t* self,
   DCHECK(self);
   if (!self)
     return 0;
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser);
+  if (!browser)
+    return 0;
   // Verify param: document_name; type: string_byref_const
   DCHECK(document_name);
   if (!document_name)
@@ -107,37 +123,48 @@ print_handler_on_print_job(struct _cef_print_handler_t* self,
 
   // Execute
   bool _retval = CefPrintHandlerCppToC::Get(self)->OnPrintJob(
-      CefString(document_name), CefString(pdf_file_path),
+      CefBrowserCToCpp::Wrap(browser), CefString(document_name),
-      CefPrintJobCallbackCToCpp::Wrap(callback));
+      CefString(pdf_file_path), CefPrintJobCallbackCToCpp::Wrap(callback));
 
   // Return type: bool
   return _retval;
 }
 
 void CEF_CALLBACK
-print_handler_on_print_reset(struct _cef_print_handler_t* self) {
+print_handler_on_print_reset(struct _cef_print_handler_t* self,
+                             cef_browser_t* browser) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
   DCHECK(self);
   if (!self)
     return;
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser);
+  if (!browser)
+    return;
 
   // Execute
-  CefPrintHandlerCppToC::Get(self)->OnPrintReset();
+  CefPrintHandlerCppToC::Get(self)->OnPrintReset(
+      CefBrowserCToCpp::Wrap(browser));
 }
 
 cef_size_t CEF_CALLBACK
 print_handler_get_pdf_paper_size(struct _cef_print_handler_t* self,
+                                 cef_browser_t* browser,
                                  int device_units_per_inch) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
   DCHECK(self);
   if (!self)
     return CefSize();
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser);
+  if (!browser)
+    return CefSize();
 
   // Execute
-  cef_size_t _retval =
+  cef_size_t _retval = CefPrintHandlerCppToC::Get(self)->GetPdfPaperSize(
-      CefPrintHandlerCppToC::Get(self)->GetPdfPaperSize(device_units_per_inch);
+      CefBrowserCToCpp::Wrap(browser), device_units_per_inch);
 
   // Return type: simple
   return _retval;

libcef_dll/ctocpp/print_handler_ctocpp.cc

@@ -9,7 +9,7 @@
 // implementations. See the translator.README.txt file in the tools directory
 // for more information.
 //
-// $hash=0749b78aaf8f69cd706962477d4d0241c93cf333$
+// $hash=80679bfc067e7564eadb691876081c4176b04c4f$
 //
 
 #include "libcef_dll/ctocpp/print_handler_ctocpp.h"
@@ -37,6 +37,7 @@ void CefPrintHandlerCToCpp::OnPrintStart(CefRefPtr<CefBrowser> browser) {
 }
 
 void CefPrintHandlerCToCpp::OnPrintSettings(
+    CefRefPtr<CefBrowser> browser,
     CefRefPtr<CefPrintSettings> settings,
     bool get_defaults) {
   cef_print_handler_t* _struct = GetStruct();
@@ -45,17 +46,23 @@ void CefPrintHandlerCToCpp::OnPrintSettings(
 
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser.get());
+  if (!browser.get())
+    return;
   // Verify param: settings; type: refptr_diff
   DCHECK(settings.get());
   if (!settings.get())
     return;
 
   // Execute
-  _struct->on_print_settings(_struct, CefPrintSettingsCppToC::Wrap(settings),
+  _struct->on_print_settings(_struct, CefBrowserCppToC::Wrap(browser),
+                             CefPrintSettingsCppToC::Wrap(settings),
                              get_defaults);
 }
 
 bool CefPrintHandlerCToCpp::OnPrintDialog(
+    CefRefPtr<CefBrowser> browser,
     bool has_selection,
     CefRefPtr<CefPrintDialogCallback> callback) {
   cef_print_handler_t* _struct = GetStruct();
@@ -64,6 +71,10 @@ bool CefPrintHandlerCToCpp::OnPrintDialog(
 
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser.get());
+  if (!browser.get())
+    return false;
   // Verify param: callback; type: refptr_diff
   DCHECK(callback.get());
   if (!callback.get())
@@ -71,13 +82,15 @@ bool CefPrintHandlerCToCpp::OnPrintDialog(
 
   // Execute
   int _retval = _struct->on_print_dialog(
-      _struct, has_selection, CefPrintDialogCallbackCppToC::Wrap(callback));
+      _struct, CefBrowserCppToC::Wrap(browser), has_selection,
+      CefPrintDialogCallbackCppToC::Wrap(callback));
 
   // Return type: bool
   return _retval ? true : false;
 }
 
 bool CefPrintHandlerCToCpp::OnPrintJob(
+    CefRefPtr<CefBrowser> browser,
     const CefString& document_name,
     const CefString& pdf_file_path,
     CefRefPtr<CefPrintJobCallback> callback) {
@@ -87,6 +100,10 @@ bool CefPrintHandlerCToCpp::OnPrintJob(
 
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser.get());
+  if (!browser.get())
+    return false;
   // Verify param: document_name; type: string_byref_const
   DCHECK(!document_name.empty());
   if (document_name.empty())
@@ -102,34 +119,45 @@ bool CefPrintHandlerCToCpp::OnPrintJob(
 
   // Execute
   int _retval = _struct->on_print_job(
-      _struct, document_name.GetStruct(), pdf_file_path.GetStruct(),
+      _struct, CefBrowserCppToC::Wrap(browser), document_name.GetStruct(),
-      CefPrintJobCallbackCppToC::Wrap(callback));
+      pdf_file_path.GetStruct(), CefPrintJobCallbackCppToC::Wrap(callback));
 
   // Return type: bool
   return _retval ? true : false;
 }
 
-void CefPrintHandlerCToCpp::OnPrintReset() {
+void CefPrintHandlerCToCpp::OnPrintReset(CefRefPtr<CefBrowser> browser) {
   cef_print_handler_t* _struct = GetStruct();
   if (CEF_MEMBER_MISSING(_struct, on_print_reset))
     return;
 
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser.get());
+  if (!browser.get())
+    return;
+
   // Execute
-  _struct->on_print_reset(_struct);
+  _struct->on_print_reset(_struct, CefBrowserCppToC::Wrap(browser));
 }
 
-CefSize CefPrintHandlerCToCpp::GetPdfPaperSize(int device_units_per_inch) {
+CefSize CefPrintHandlerCToCpp::GetPdfPaperSize(CefRefPtr<CefBrowser> browser,
+                                               int device_units_per_inch) {
   cef_print_handler_t* _struct = GetStruct();
   if (CEF_MEMBER_MISSING(_struct, get_pdf_paper_size))
     return CefSize();
 
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser.get());
+  if (!browser.get())
+    return CefSize();
+
   // Execute
-  cef_size_t _retval =
+  cef_size_t _retval = _struct->get_pdf_paper_size(
-      _struct->get_pdf_paper_size(_struct, device_units_per_inch);
+      _struct, CefBrowserCppToC::Wrap(browser), device_units_per_inch);
 
   // Return type: simple
   return _retval;

libcef_dll/ctocpp/print_handler_ctocpp.h

@@ -9,7 +9,7 @@
 // implementations. See the translator.README.txt file in the tools directory
 // for more information.
 //
-// $hash=104e754c5019270e7bd700c6b979891f1275f9a7$
+// $hash=1a2adb6e9cbbe96253cc997312e60ca330dc4de6$
 //
 
 #ifndef CEF_LIBCEF_DLL_CTOCPP_PRINT_HANDLER_CTOCPP_H_
@@ -34,15 +34,19 @@ class CefPrintHandlerCToCpp : public CefCToCppRefCounted<CefPrintHandlerCToCpp,
 
   // CefPrintHandler methods.
   void OnPrintStart(CefRefPtr<CefBrowser> browser) override;
-  void OnPrintSettings(CefRefPtr<CefPrintSettings> settings,
+  void OnPrintSettings(CefRefPtr<CefBrowser> browser,
+                       CefRefPtr<CefPrintSettings> settings,
                        bool get_defaults) override;
-  bool OnPrintDialog(bool has_selection,
+  bool OnPrintDialog(CefRefPtr<CefBrowser> browser,
+                     bool has_selection,
                      CefRefPtr<CefPrintDialogCallback> callback) override;
-  bool OnPrintJob(const CefString& document_name,
+  bool OnPrintJob(CefRefPtr<CefBrowser> browser,
+                  const CefString& document_name,
                   const CefString& pdf_file_path,
                   CefRefPtr<CefPrintJobCallback> callback) override;
-  void OnPrintReset() override;
+  void OnPrintReset(CefRefPtr<CefBrowser> browser) override;
-  CefSize GetPdfPaperSize(int device_units_per_inch) override;
+  CefSize GetPdfPaperSize(CefRefPtr<CefBrowser> browser,
+                          int device_units_per_inch) override;
 };
 
 #endif  // CEF_LIBCEF_DLL_CTOCPP_PRINT_HANDLER_CTOCPP_H_

patch/patch.cfg

@@ -303,4 +303,9 @@ patches = [
     # https://bugs.chromium.org/p/chromium/issues/detail?id=721461
     'name': 'network_change_721461',
   },
+  {
+    # Linux: Attach routing IDs to PrintingContext.
+    # https://bitbucket.org/chromiumembedded/cef/issues/2196
+    'name': 'printing_context_2196',
+  },
 ]

patch/patches/printing_context_2196.patch

@@ -0,0 +1,41 @@
+diff --git chrome/browser/printing/print_job_worker.cc chrome/browser/printing/print_job_worker.cc
+index d06b61a..f41f848 100644
+--- chrome/browser/printing/print_job_worker.cc
++++ chrome/browser/printing/print_job_worker.cc
+@@ -121,6 +121,7 @@ PrintJobWorker::PrintJobWorker(int render_process_id,
+   printing_context_delegate_ = base::MakeUnique<PrintingContextDelegate>(
+       render_process_id, render_frame_id);
+   printing_context_ = PrintingContext::Create(printing_context_delegate_.get());
++  printing_context_->set_render_ids(render_process_id, render_frame_id);
+ }
+ 
+ PrintJobWorker::~PrintJobWorker() {
+diff --git printing/printing_context.h printing/printing_context.h
+index 7054654..ed5b664 100644
+--- printing/printing_context.h
++++ printing/printing_context.h
+@@ -127,6 +127,13 @@ class PRINTING_EXPORT PrintingContext {
+ 
+   int job_id() const { return job_id_; }
+ 
++  void set_render_ids(int render_process_id, int render_frame_id) {
++    render_process_id_ = render_process_id;
++    render_frame_id_ = render_frame_id;
++  }
++  int render_process_id() const { return render_process_id_; }
++  int render_frame_id() const { return render_frame_id_; }
++
+  protected:
+   explicit PrintingContext(Delegate* delegate);
+ 
+@@ -151,6 +158,10 @@ class PRINTING_EXPORT PrintingContext {
+   // The job id for the current job. The value is 0 if no jobs are active.
+   int job_id_;
+ 
++  // Routing IDs for the frame that owns this object.
++  int render_process_id_ = 0;
++  int render_frame_id_ = 0;
++
+  private:
+   DISALLOW_COPY_AND_ASSIGN(PrintingContext);
+ };

tests/cefclient/browser/print_handler_gtk.cc

@@ -7,10 +7,15 @@
 
 #include <vector>
 
+#include <gtk/gtk.h>
+#include <gtk/gtkunixprint.h>
+
 #include "include/base/cef_logging.h"
 #include "include/base/cef_macros.h"
 #include "include/wrapper/cef_helpers.h"
 
+#include "tests/cefclient/browser/root_window.h"
+
 namespace client {
 
 namespace {
@@ -267,161 +272,328 @@ void InitPrintSettings(GtkPrintSettings* settings,
 
 }  // namespace
 
-ClientPrintHandlerGtk::ClientPrintHandlerGtk()
+struct ClientPrintHandlerGtk::PrintHandler {
-    : dialog_(NULL), gtk_settings_(NULL), page_setup_(NULL), printer_(NULL) {}
+  PrintHandler(CefRefPtr<CefBrowser> browser)
+      : browser_(browser),
+        dialog_(NULL),
+        gtk_settings_(NULL),
+        page_setup_(NULL),
+        printer_(NULL) {}
 
-void ClientPrintHandlerGtk::OnPrintStart(CefRefPtr<CefBrowser> browser) {}
+  ~PrintHandler() {
-
+    if (dialog_) {
-void ClientPrintHandlerGtk::OnPrintSettings(
+      gtk_widget_destroy(dialog_);
-    CefRefPtr<CefPrintSettings> settings,
+      dialog_ = NULL;
-    bool get_defaults) {
+    }
-  if (get_defaults) {
+    if (gtk_settings_) {
-    DCHECK(!page_setup_);
+      g_object_unref(gtk_settings_);
-    DCHECK(!printer_);
+      gtk_settings_ = NULL;
-
+    }
-    // |gtk_settings_| is a new copy.
+    if (page_setup_) {
-    gtk_settings_ = gtk_print_settings_copy(GetLastUsedSettings()->settings());
+      g_object_unref(page_setup_);
-    page_setup_ = gtk_page_setup_new();
+      page_setup_ = NULL;
-  } else {
-    if (!gtk_settings_) {
-      gtk_settings_ =
-          gtk_print_settings_copy(GetLastUsedSettings()->settings());
     }
-
-    GtkPrinterList* printer_list = new GtkPrinterList;
-    printer_ = printer_list->GetPrinterWithName(settings->GetDeviceName());
     if (printer_) {
-      g_object_ref(printer_);
+      g_object_unref(printer_);
-      gtk_print_settings_set_printer(gtk_settings_,
+      printer_ = NULL;
-                                     gtk_printer_get_name(printer_));
-      if (!page_setup_) {
-        page_setup_ = gtk_printer_get_default_page_size(printer_);
-      }
     }
-
-    gtk_print_settings_set_n_copies(gtk_settings_, settings->GetCopies());
-    gtk_print_settings_set_collate(gtk_settings_, settings->WillCollate());
-
-    std::string color_value;
-    std::string color_setting_name;
-    GetColorModelForMode(settings->GetColorModel(), &color_setting_name,
-                         &color_value);
-    gtk_print_settings_set(gtk_settings_, color_setting_name.c_str(),
-                           color_value.c_str());
-
-    if (settings->GetDuplexMode() != DUPLEX_MODE_UNKNOWN) {
-      const char* cups_duplex_mode = NULL;
-      switch (settings->GetDuplexMode()) {
-        case DUPLEX_MODE_LONG_EDGE:
-          cups_duplex_mode = kDuplexNoTumble;
-          break;
-        case DUPLEX_MODE_SHORT_EDGE:
-          cups_duplex_mode = kDuplexTumble;
-          break;
-        case DUPLEX_MODE_SIMPLEX:
-          cups_duplex_mode = kDuplexNone;
-          break;
-        default:  // UNKNOWN_DUPLEX_MODE
-          NOTREACHED();
-          break;
-      }
-      gtk_print_settings_set(gtk_settings_, kCUPSDuplex, cups_duplex_mode);
-    }
-
-    if (!page_setup_)
-      page_setup_ = gtk_page_setup_new();
-
-    gtk_print_settings_set_orientation(
-        gtk_settings_, settings->IsLandscape() ? GTK_PAGE_ORIENTATION_LANDSCAPE
-                                               : GTK_PAGE_ORIENTATION_PORTRAIT);
-
-    delete printer_list;
   }
 
-  InitPrintSettings(gtk_settings_, page_setup_, settings);
+  void OnPrintSettings(CefRefPtr<CefPrintSettings> settings,
+                       bool get_defaults) {
+    if (get_defaults) {
+      DCHECK(!page_setup_);
+      DCHECK(!printer_);
+
+      // |gtk_settings_| is a new copy.
+      gtk_settings_ =
+          gtk_print_settings_copy(GetLastUsedSettings()->settings());
+      page_setup_ = gtk_page_setup_new();
+    } else {
+      if (!gtk_settings_) {
+        gtk_settings_ =
+            gtk_print_settings_copy(GetLastUsedSettings()->settings());
+      }
+
+      GtkPrinterList* printer_list = new GtkPrinterList;
+      printer_ = printer_list->GetPrinterWithName(settings->GetDeviceName());
+      if (printer_) {
+        g_object_ref(printer_);
+        gtk_print_settings_set_printer(gtk_settings_,
+                                       gtk_printer_get_name(printer_));
+        if (!page_setup_) {
+          page_setup_ = gtk_printer_get_default_page_size(printer_);
+        }
+      }
+
+      gtk_print_settings_set_n_copies(gtk_settings_, settings->GetCopies());
+      gtk_print_settings_set_collate(gtk_settings_, settings->WillCollate());
+
+      std::string color_value;
+      std::string color_setting_name;
+      GetColorModelForMode(settings->GetColorModel(), &color_setting_name,
+                           &color_value);
+      gtk_print_settings_set(gtk_settings_, color_setting_name.c_str(),
+                             color_value.c_str());
+
+      if (settings->GetDuplexMode() != DUPLEX_MODE_UNKNOWN) {
+        const char* cups_duplex_mode = NULL;
+        switch (settings->GetDuplexMode()) {
+          case DUPLEX_MODE_LONG_EDGE:
+            cups_duplex_mode = kDuplexNoTumble;
+            break;
+          case DUPLEX_MODE_SHORT_EDGE:
+            cups_duplex_mode = kDuplexTumble;
+            break;
+          case DUPLEX_MODE_SIMPLEX:
+            cups_duplex_mode = kDuplexNone;
+            break;
+          default:  // UNKNOWN_DUPLEX_MODE
+            NOTREACHED();
+            break;
+        }
+        gtk_print_settings_set(gtk_settings_, kCUPSDuplex, cups_duplex_mode);
+      }
+
+      if (!page_setup_)
+        page_setup_ = gtk_page_setup_new();
+
+      gtk_print_settings_set_orientation(gtk_settings_,
+                                         settings->IsLandscape()
+                                             ? GTK_PAGE_ORIENTATION_LANDSCAPE
+                                             : GTK_PAGE_ORIENTATION_PORTRAIT);
+
+      delete printer_list;
+    }
+
+    InitPrintSettings(gtk_settings_, page_setup_, settings);
+  }
+
+  bool OnPrintDialog(bool has_selection,
+                     CefRefPtr<CefPrintDialogCallback> callback) {
+    dialog_callback_ = callback;
+
+    GtkWindow* parent = GetWindow();
+    // TODO(estade): We need a window title here.
+    dialog_ = gtk_print_unix_dialog_new(NULL, parent);
+    g_signal_connect(dialog_, "delete-event",
+                     G_CALLBACK(gtk_widget_hide_on_delete), NULL);
+
+    // Set modal so user cannot focus the same tab and press print again.
+    gtk_window_set_modal(GTK_WINDOW(dialog_), TRUE);
+
+    // Since we only generate PDF, only show printers that support PDF.
+    // TODO(thestig) Add more capabilities to support?
+    GtkPrintCapabilities cap = static_cast<GtkPrintCapabilities>(
+        GTK_PRINT_CAPABILITY_GENERATE_PDF | GTK_PRINT_CAPABILITY_PAGE_SET |
+        GTK_PRINT_CAPABILITY_COPIES | GTK_PRINT_CAPABILITY_COLLATE |
+        GTK_PRINT_CAPABILITY_REVERSE);
+    gtk_print_unix_dialog_set_manual_capabilities(
+        GTK_PRINT_UNIX_DIALOG(dialog_), cap);
+    gtk_print_unix_dialog_set_embed_page_setup(GTK_PRINT_UNIX_DIALOG(dialog_),
+                                               TRUE);
+    gtk_print_unix_dialog_set_support_selection(GTK_PRINT_UNIX_DIALOG(dialog_),
+                                                TRUE);
+    gtk_print_unix_dialog_set_has_selection(GTK_PRINT_UNIX_DIALOG(dialog_),
+                                            has_selection);
+    gtk_print_unix_dialog_set_settings(GTK_PRINT_UNIX_DIALOG(dialog_),
+                                       gtk_settings_);
+    g_signal_connect(dialog_, "response", G_CALLBACK(OnDialogResponseThunk),
+                     this);
+    gtk_widget_show(dialog_);
+
+    return true;
+  }
+
+  bool OnPrintJob(const CefString& document_name,
+                  const CefString& pdf_file_path,
+                  CefRefPtr<CefPrintJobCallback> callback) {
+    // If |printer_| is NULL then somehow the GTK printer list changed out under
+    // us. In which case, just bail out.
+    if (!printer_)
+      return false;
+
+    job_callback_ = callback;
+
+    // Save the settings for next time.
+    GetLastUsedSettings()->SetLastUsedSettings(gtk_settings_);
+
+    GtkPrintJob* print_job = gtk_print_job_new(
+        document_name.ToString().c_str(), printer_, gtk_settings_, page_setup_);
+    gtk_print_job_set_source_file(print_job, pdf_file_path.ToString().c_str(),
+                                  NULL);
+    gtk_print_job_send(print_job, OnJobCompletedThunk, this, NULL);
+
+    return true;
+  }
+
+ private:
+  // Returns the GtkWindow* for the browser. Will return NULL when using the
+  // Views framework.
+  GtkWindow* GetWindow() {
+    scoped_refptr<RootWindow> root_window =
+        RootWindow::GetForBrowser(browser_->GetIdentifier());
+    if (root_window)
+      return GTK_WINDOW(root_window->GetWindowHandle());
+    return NULL;
+  }
+
+  void OnDialogResponse(GtkDialog* dialog, gint response_id) {
+    int num_matched_handlers = g_signal_handlers_disconnect_by_func(
+        dialog_, reinterpret_cast<gpointer>(&OnDialogResponseThunk), this);
+    DCHECK_EQ(1, num_matched_handlers);
+
+    gtk_widget_hide(dialog_);
+
+    switch (response_id) {
+      case GTK_RESPONSE_OK: {
+        if (gtk_settings_)
+          g_object_unref(gtk_settings_);
+        gtk_settings_ =
+            gtk_print_unix_dialog_get_settings(GTK_PRINT_UNIX_DIALOG(dialog_));
+
+        if (printer_)
+          g_object_unref(printer_);
+        printer_ = gtk_print_unix_dialog_get_selected_printer(
+            GTK_PRINT_UNIX_DIALOG(dialog_));
+        g_object_ref(printer_);
+
+        if (page_setup_)
+          g_object_unref(page_setup_);
+        page_setup_ = gtk_print_unix_dialog_get_page_setup(
+            GTK_PRINT_UNIX_DIALOG(dialog_));
+        g_object_ref(page_setup_);
+
+        // Handle page ranges.
+        CefPrintSettings::PageRangeList ranges_vector;
+        gint num_ranges;
+        bool print_selection_only = false;
+        switch (gtk_print_settings_get_print_pages(gtk_settings_)) {
+          case GTK_PRINT_PAGES_RANGES: {
+            GtkPageRange* gtk_range =
+                gtk_print_settings_get_page_ranges(gtk_settings_, &num_ranges);
+            if (gtk_range) {
+              for (int i = 0; i < num_ranges; ++i) {
+                ranges_vector.push_back(
+                    CefRange(gtk_range[i].start, gtk_range[i].end));
+              }
+              g_free(gtk_range);
+            }
+            break;
+          }
+          case GTK_PRINT_PAGES_SELECTION:
+            print_selection_only = true;
+            break;
+          case GTK_PRINT_PAGES_ALL:
+            // Leave |ranges_vector| empty to indicate print all pages.
+            break;
+          case GTK_PRINT_PAGES_CURRENT:
+          default:
+            NOTREACHED();
+            break;
+        }
+
+        CefRefPtr<CefPrintSettings> settings = CefPrintSettings::Create();
+        settings->SetPageRanges(ranges_vector);
+        settings->SetSelectionOnly(print_selection_only);
+        InitPrintSettings(gtk_settings_, page_setup_, settings);
+        dialog_callback_->Continue(settings);
+        dialog_callback_ = NULL;
+        return;
+      }
+      case GTK_RESPONSE_DELETE_EVENT:  // Fall through.
+      case GTK_RESPONSE_CANCEL: {
+        dialog_callback_->Cancel();
+        dialog_callback_ = NULL;
+        return;
+      }
+      case GTK_RESPONSE_APPLY:
+      default: { NOTREACHED(); }
+    }
+  }
+
+  void OnJobCompleted(GtkPrintJob* print_job, GError* error) {
+    job_callback_->Continue();
+    job_callback_ = NULL;
+  }
+
+  static void OnDialogResponseThunk(GtkDialog* dialog,
+                                    gint response_id,
+                                    PrintHandler* handler) {
+    handler->OnDialogResponse(dialog, response_id);
+  }
+
+  static void OnJobCompletedThunk(GtkPrintJob* print_job,
+                                  void* handler,
+                                  GError* error) {
+    static_cast<PrintHandler*>(handler)->OnJobCompleted(print_job, error);
+  }
+
+  CefRefPtr<CefBrowser> browser_;
+
+  GtkWidget* dialog_;               // Owned.
+  GtkPrintSettings* gtk_settings_;  // Referenced.
+  GtkPageSetup* page_setup_;        // Referenced.
+  GtkPrinter* printer_;             // Referenced.
+
+  CefRefPtr<CefPrintDialogCallback> dialog_callback_;
+  CefRefPtr<CefPrintJobCallback> job_callback_;
+};
+
+ClientPrintHandlerGtk::ClientPrintHandlerGtk() {}
+
+ClientPrintHandlerGtk::~ClientPrintHandlerGtk() {
+  DCHECK(print_handler_map_.empty());
+}
+
+void ClientPrintHandlerGtk::OnPrintStart(CefRefPtr<CefBrowser> browser) {
+  const int browser_id = browser->GetIdentifier();
+
+#ifndef _NDEBUG
+  // Print handler should not already exist for the browser.
+  PrintHandlerMap::const_iterator it = print_handler_map_.find(browser_id);
+  DCHECK(it == print_handler_map_.end());
+#endif
+
+  // Create a new print handler.
+  PrintHandler* ph = new PrintHandler(browser);
+  print_handler_map_.insert(std::make_pair(browser_id, ph));
+}
+
+void ClientPrintHandlerGtk::OnPrintSettings(
+    CefRefPtr<CefBrowser> browser,
+    CefRefPtr<CefPrintSettings> settings,
+    bool get_defaults) {
+  GetPrintHandler(browser)->OnPrintSettings(settings, get_defaults);
 }
 
 bool ClientPrintHandlerGtk::OnPrintDialog(
+    CefRefPtr<CefBrowser> browser,
     bool has_selection,
     CefRefPtr<CefPrintDialogCallback> callback) {
-  dialog_callback_ = callback;
+  return GetPrintHandler(browser)->OnPrintDialog(has_selection, callback);
-
-  // TODO(cef): Identify the correct parent window.
-  GtkWindow* parent = NULL;
-  // TODO(estade): We need a window title here.
-  dialog_ = gtk_print_unix_dialog_new(NULL, parent);
-  g_signal_connect(dialog_, "delete-event",
-                   G_CALLBACK(gtk_widget_hide_on_delete), NULL);
-
-  // Set modal so user cannot focus the same tab and press print again.
-  gtk_window_set_modal(GTK_WINDOW(dialog_), TRUE);
-
-  // Since we only generate PDF, only show printers that support PDF.
-  // TODO(thestig) Add more capabilities to support?
-  GtkPrintCapabilities cap = static_cast<GtkPrintCapabilities>(
-      GTK_PRINT_CAPABILITY_GENERATE_PDF | GTK_PRINT_CAPABILITY_PAGE_SET |
-      GTK_PRINT_CAPABILITY_COPIES | GTK_PRINT_CAPABILITY_COLLATE |
-      GTK_PRINT_CAPABILITY_REVERSE);
-  gtk_print_unix_dialog_set_manual_capabilities(GTK_PRINT_UNIX_DIALOG(dialog_),
-                                                cap);
-  gtk_print_unix_dialog_set_embed_page_setup(GTK_PRINT_UNIX_DIALOG(dialog_),
-                                             TRUE);
-  gtk_print_unix_dialog_set_support_selection(GTK_PRINT_UNIX_DIALOG(dialog_),
-                                              TRUE);
-  gtk_print_unix_dialog_set_has_selection(GTK_PRINT_UNIX_DIALOG(dialog_),
-                                          has_selection);
-  gtk_print_unix_dialog_set_settings(GTK_PRINT_UNIX_DIALOG(dialog_),
-                                     gtk_settings_);
-  g_signal_connect(dialog_, "response", G_CALLBACK(OnDialogResponseThunk),
-                   this);
-  gtk_widget_show(dialog_);
-
-  return true;
 }
 
 bool ClientPrintHandlerGtk::OnPrintJob(
+    CefRefPtr<CefBrowser> browser,
     const CefString& document_name,
     const CefString& pdf_file_path,
     CefRefPtr<CefPrintJobCallback> callback) {
-  // If |printer_| is NULL then somehow the GTK printer list changed out under
+  return GetPrintHandler(browser)->OnPrintJob(document_name, pdf_file_path,
-  // us. In which case, just bail out.
+                                              callback);
-  if (!printer_)
-    return false;
-
-  job_callback_ = callback;
-
-  // Save the settings for next time.
-  GetLastUsedSettings()->SetLastUsedSettings(gtk_settings_);
-
-  GtkPrintJob* print_job = gtk_print_job_new(
-      document_name.ToString().c_str(), printer_, gtk_settings_, page_setup_);
-  gtk_print_job_set_source_file(print_job, pdf_file_path.ToString().c_str(),
-                                NULL);
-  gtk_print_job_send(print_job, OnJobCompletedThunk, this, NULL);
-
-  return true;
 }
 
-void ClientPrintHandlerGtk::OnPrintReset() {
+void ClientPrintHandlerGtk::OnPrintReset(CefRefPtr<CefBrowser> browser) {
-  if (dialog_) {
+  // Delete the print handler.
-    gtk_widget_destroy(dialog_);
+  PrintHandlerMap::iterator it =
-    dialog_ = NULL;
+      print_handler_map_.find(browser->GetIdentifier());
-  }
+  DCHECK(it != print_handler_map_.end());
-  if (gtk_settings_) {
+  delete it->second;
-    g_object_unref(gtk_settings_);
+  print_handler_map_.erase(it);
-    gtk_settings_ = NULL;
-  }
-  if (page_setup_) {
-    g_object_unref(page_setup_);
-    page_setup_ = NULL;
-  }
-  if (printer_) {
-    g_object_unref(printer_);
-    printer_ = NULL;
-  }
 }
 
-CefSize ClientPrintHandlerGtk::GetPdfPaperSize(int device_units_per_inch) {
+CefSize ClientPrintHandlerGtk::GetPdfPaperSize(CefRefPtr<CefBrowser> browser,
+                                               int device_units_per_inch) {
   GtkPageSetup* page_setup = gtk_page_setup_new();
 
   float width = gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH);
@@ -432,85 +604,12 @@ CefSize ClientPrintHandlerGtk::GetPdfPaperSize(int device_units_per_inch) {
   return CefSize(width * device_units_per_inch, height * device_units_per_inch);
 }
 
-void ClientPrintHandlerGtk::OnDialogResponse(GtkDialog* dialog,
+ClientPrintHandlerGtk::PrintHandler* ClientPrintHandlerGtk::GetPrintHandler(
-                                             gint response_id) {
+    CefRefPtr<CefBrowser> browser) {
-  int num_matched_handlers = g_signal_handlers_disconnect_by_func(
+  PrintHandlerMap::const_iterator it =
-      dialog_, reinterpret_cast<gpointer>(&OnDialogResponseThunk), this);
+      print_handler_map_.find(browser->GetIdentifier());
-  DCHECK_EQ(1, num_matched_handlers);
+  DCHECK(it != print_handler_map_.end());
-
+  return it->second;
-  gtk_widget_hide(dialog_);
-
-  switch (response_id) {
-    case GTK_RESPONSE_OK: {
-      if (gtk_settings_)
-        g_object_unref(gtk_settings_);
-      gtk_settings_ =
-          gtk_print_unix_dialog_get_settings(GTK_PRINT_UNIX_DIALOG(dialog_));
-
-      if (printer_)
-        g_object_unref(printer_);
-      printer_ = gtk_print_unix_dialog_get_selected_printer(
-          GTK_PRINT_UNIX_DIALOG(dialog_));
-      g_object_ref(printer_);
-
-      if (page_setup_)
-        g_object_unref(page_setup_);
-      page_setup_ =
-          gtk_print_unix_dialog_get_page_setup(GTK_PRINT_UNIX_DIALOG(dialog_));
-      g_object_ref(page_setup_);
-
-      // Handle page ranges.
-      CefPrintSettings::PageRangeList ranges_vector;
-      gint num_ranges;
-      bool print_selection_only = false;
-      switch (gtk_print_settings_get_print_pages(gtk_settings_)) {
-        case GTK_PRINT_PAGES_RANGES: {
-          GtkPageRange* gtk_range =
-              gtk_print_settings_get_page_ranges(gtk_settings_, &num_ranges);
-          if (gtk_range) {
-            for (int i = 0; i < num_ranges; ++i) {
-              ranges_vector.push_back(
-                  CefRange(gtk_range[i].start, gtk_range[i].end));
-            }
-            g_free(gtk_range);
-          }
-          break;
-        }
-        case GTK_PRINT_PAGES_SELECTION:
-          print_selection_only = true;
-          break;
-        case GTK_PRINT_PAGES_ALL:
-          // Leave |ranges_vector| empty to indicate print all pages.
-          break;
-        case GTK_PRINT_PAGES_CURRENT:
-        default:
-          NOTREACHED();
-          break;
-      }
-
-      CefRefPtr<CefPrintSettings> settings = CefPrintSettings::Create();
-      settings->SetPageRanges(ranges_vector);
-      settings->SetSelectionOnly(print_selection_only);
-      InitPrintSettings(gtk_settings_, page_setup_, settings);
-      dialog_callback_->Continue(settings);
-      dialog_callback_ = NULL;
-      return;
-    }
-    case GTK_RESPONSE_DELETE_EVENT:  // Fall through.
-    case GTK_RESPONSE_CANCEL: {
-      dialog_callback_->Cancel();
-      dialog_callback_ = NULL;
-      return;
-    }
-    case GTK_RESPONSE_APPLY:
-    default: { NOTREACHED(); }
-  }
-}
-
-void ClientPrintHandlerGtk::OnJobCompleted(GtkPrintJob* print_job,
-                                           GError* error) {
-  job_callback_->Continue();
-  job_callback_ = NULL;
 }
 
 }  // namespace client

tests/cefclient/browser/print_handler_gtk.h

@@ -7,8 +7,7 @@
 #define CEF_TESTS_CEFCLIENT_BROWSER_PRINT_HANDLER_GTK_H_
 #pragma once
 
-#include <gtk/gtk.h>
+#include <map>
-#include <gtk/gtkunixprint.h>
 
 #include "include/cef_print_handler.h"
 
@@ -17,44 +16,32 @@ namespace client {
 class ClientPrintHandlerGtk : public CefPrintHandler {
  public:
   ClientPrintHandlerGtk();
+  virtual ~ClientPrintHandlerGtk();
 
   // CefPrintHandler methods.
   void OnPrintStart(CefRefPtr<CefBrowser> browser) OVERRIDE;
-  void OnPrintSettings(CefRefPtr<CefPrintSettings> settings,
+  void OnPrintSettings(CefRefPtr<CefBrowser> browser,
+                       CefRefPtr<CefPrintSettings> settings,
                        bool get_defaults) OVERRIDE;
-  bool OnPrintDialog(bool has_selection,
+  bool OnPrintDialog(CefRefPtr<CefBrowser> browser,
+                     bool has_selection,
                      CefRefPtr<CefPrintDialogCallback> callback) OVERRIDE;
-  bool OnPrintJob(const CefString& document_name,
+  bool OnPrintJob(CefRefPtr<CefBrowser> browser,
+                  const CefString& document_name,
                   const CefString& pdf_file_path,
                   CefRefPtr<CefPrintJobCallback> callback) OVERRIDE;
-  void OnPrintReset() OVERRIDE;
+  void OnPrintReset(CefRefPtr<CefBrowser> browser) OVERRIDE;
-  CefSize GetPdfPaperSize(int device_units_per_inch) OVERRIDE;
+  CefSize GetPdfPaperSize(CefRefPtr<CefBrowser> browser,
+                          int device_units_per_inch) OVERRIDE;
 
  private:
-  void OnDialogResponse(GtkDialog* dialog, gint response_id);
+  // Print handler.
-  void OnJobCompleted(GtkPrintJob* print_job, GError* error);
+  struct PrintHandler;
+  PrintHandler* GetPrintHandler(CefRefPtr<CefBrowser> browser);
 
-  static void OnDialogResponseThunk(GtkDialog* dialog,
+  // Map of browser ID to print handler.
-                                    gint response_id,
+  typedef std::map<int, PrintHandler*> PrintHandlerMap;
-                                    ClientPrintHandlerGtk* handler) {
+  PrintHandlerMap print_handler_map_;
-    handler->OnDialogResponse(dialog, response_id);
-  }
-  static void OnJobCompletedThunk(GtkPrintJob* print_job,
-                                  void* handler,
-                                  GError* error) {
-    static_cast<ClientPrintHandlerGtk*>(handler)->OnJobCompleted(print_job,
-                                                                 error);
-  }
-
-  // Print dialog settings. ClientPrintHandlerGtk owns |dialog_| and holds
-  // references to the other objects.
-  GtkWidget* dialog_;
-  GtkPrintSettings* gtk_settings_;
-  GtkPageSetup* page_setup_;
-  GtkPrinter* printer_;
-
-  CefRefPtr<CefPrintDialogCallback> dialog_callback_;
-  CefRefPtr<CefPrintJobCallback> job_callback_;
 
   IMPLEMENT_REFCOUNTING(ClientPrintHandlerGtk);
   DISALLOW_COPY_AND_ASSIGN(ClientPrintHandlerGtk);