Add policy for blocking GCP printing.

chrome/browser/ui/webui/print_preview_handler.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/ui/webui/print_preview_handler.h"
 
 #include <ctype.h>
 
 #include <string>
 #include <vector>
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/i18n/file_util_icu.h"
 #include "base/json/json_reader.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/histogram.h"
 #include "base/i18n/number_formatting.h"
 #include "base/path_service.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/platform_util.h"
+#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/printing/background_printing_manager.h"
 #include "chrome/browser/printing/cloud_print/cloud_print_url.h"
 #include "chrome/browser/printing/print_dialog_cloud.h"
 #include "chrome/browser/printing/print_job_manager.h"
 #include "chrome/browser/printing/print_preview_tab_controller.h"
 #include "chrome/browser/printing/print_system_task_proxy.h"
 #include "chrome/browser/printing/print_view_manager.h"
 #include "chrome/browser/printing/printer_manager_dialog.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/restore_tab_helper.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/webui/cloud_print_signin_dialog.h"
 #include "chrome/browser/ui/webui/print_preview_ui.h"
 #include "chrome/common/chrome_paths.h"
+#include "chrome/common/pref_names.h"
 #include "chrome/common/print_messages.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "printing/backend/print_backend.h"
 #include "printing/metafile.h"
 #include "printing/metafile_impl.h"
 #include "printing/page_range.h"
 #include "printing/print_settings.h"
 #include "unicode/ulocdata.h"
@@ skipping 599 matching lines @@
                                   default_printer,
                                   cloud_print_data);
 }
 
 void PrintPreviewHandler::SetupPrinterList(const ListValue& printers) {
   SendCloudPrintEnabled();
   web_ui_->CallJavascriptFunction("setPrinters", printers);
 }
 
 void PrintPreviewHandler::SendCloudPrintEnabled() {
-  GURL gcp_url(CloudPrintURL(BrowserList::GetLastActive()->profile()).
-               GetCloudPrintServiceURL());
-  base::StringValue gcp_url_value(gcp_url.spec());
-  web_ui_->CallJavascriptFunction("setUseCloudPrint", gcp_url_value);
+  Profile* profile = BrowserList::GetLastActive()->profile();
+  PrefService* prefs = profile->GetPrefs();
+  if (!prefs->IsManagedPreference(prefs::kCloudPrintSubmitEnabled) ||

[pastarmovj, 2011/10/27 09:01:23]

I don't think you need the IsManagedPreference check here. If it is not managed
it will be either left to its default value which is true or the user could
potentially write it in his Preferences file and set it to false in which case
although undocumented it will be valid way to locally disable GCP.

[Albert Bodenhamer, 2011/10/27 18:18:38]

Done.

+      prefs->GetBoolean(prefs::kCloudPrintSubmitEnabled)) {
+    GURL gcp_url(CloudPrintURL(profile).GetCloudPrintServiceURL());
+    base::StringValue gcp_url_value(gcp_url.spec());
+    web_ui_->CallJavascriptFunction("setUseCloudPrint", gcp_url_value);
+  }
 }
 
 void PrintPreviewHandler::SendCloudPrintJob(const DictionaryValue& settings,
                                             std::string print_ticket) {
   scoped_refptr<RefCountedBytes> data;
   PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(web_ui_);
   print_preview_ui->GetPrintPreviewDataForIndex(
       printing::COMPLETE_PREVIEW_DOCUMENT_INDEX, &data);
   CHECK(data.get());
   DCHECK_GT(data->size(), 0U);
@@ skipping 174 matching lines @@
     return;
 
   // We no longer require the initiator tab details. Remove those details
   // associated with the preview tab to allow the initiator tab to create
   // another preview tab.
   printing::PrintPreviewTabController* tab_controller =
       printing::PrintPreviewTabController::GetInstance();
   if (tab_controller)
     tab_controller->EraseInitiatorTabInfo(preview_tab_wrapper());
 }