base::Bind: Convert PrintingContext::PrintSettingsCallback.

chrome/browser/printing/print_dialog_gtk.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/printing/print_dialog_gtk.h"
 
 #include <fcntl.h>
 #include <gtk/gtkpagesetupunixdialog.h>
 #include <gtk/gtkprintjob.h>
 #include <sys/stat.h>
@@ skipping 82 matching lines @@
 }  // namespace
 
 // static
 printing::PrintDialogGtkInterface* PrintDialogGtk::CreatePrintDialog(
     PrintingContextGtk* context) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   return new PrintDialogGtk(context);
 }
 
 PrintDialogGtk::PrintDialogGtk(PrintingContextGtk* context)
-    : callback_(NULL),
-      context_(context),
+    : context_(context),
       dialog_(NULL),
       gtk_settings_(NULL),
       page_setup_(NULL),
       printer_(NULL) {
 }
 
 PrintDialogGtk::~PrintDialogGtk() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   if (dialog_) {
@@ skipping 110 matching lines @@
   gtk_print_settings_set_orientation(
       gtk_settings_,
       landscape ? GTK_PAGE_ORIENTATION_LANDSCAPE :
                   GTK_PAGE_ORIENTATION_PORTRAIT);
 
   InitPrintSettings(ranges, settings);
   return true;
 }
 
 void PrintDialogGtk::ShowDialog(
-    PrintingContextGtk::PrintSettingsCallback* callback) {
+    const PrintingContextGtk::PrintSettingsCallback& callback) {
   callback_ = callback;
 
   GtkWindow* parent = BrowserList::GetLastActive()->window()->GetNativeHandle();
   // 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.
@@ skipping 90 matching lines @@
           range.to = gtk_range[i].end;
           ranges_vector.push_back(range);
         }
         g_free(gtk_range);
       }
 
       PrintSettings settings;
       printing::PrintSettingsInitializerGtk::InitPrintSettings(
           gtk_settings_, page_setup_, ranges_vector, false, &settings);
       context_->InitWithSettings(settings);
-      callback_->Run(PrintingContextGtk::OK);
-      callback_ = NULL;
+      callback_.Run(PrintingContextGtk::OK);
+      callback_.Reset();
       return;
     }
     case GTK_RESPONSE_DELETE_EVENT:  // Fall through.
     case GTK_RESPONSE_CANCEL: {
-      callback_->Run(PrintingContextGtk::CANCEL);
-      callback_ = NULL;
+      callback_.Run(PrintingContextGtk::CANCEL);
+      callback_.Reset();
       return;
     }
     case GTK_RESPONSE_APPLY:
     default: {
       NOTREACHED();
     }
   }
 }
 
 void PrintDialogGtk::SendDocumentToPrinter(const string16& document_name) {
@@ skipping 34 matching lines @@
   // Printing finished. Matches AddRef() in PrintDocument();
   Release();
 }
 
 void PrintDialogGtk::InitPrintSettings(const PageRanges& page_ranges,
                                        PrintSettings* settings) {
   printing::PrintSettingsInitializerGtk::InitPrintSettings(
       gtk_settings_, page_setup_, page_ranges, false, settings);
   context_->InitWithSettings(*settings);
 }