Define Print Preview default printer selection policy

chrome/browser/ui/webui/print_preview/print_preview_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/print_preview/print_preview_handler.h"
 
 #include <ctype.h>
 
 #include <map>
 #include <string>
@@ skipping 151 matching lines @@
 // Dictionary field to indicate whether Chrome is running in forced app (app
 // kiosk) mode. It's not the same as desktop Chrome kiosk (the one above).
 const char kAppKioskMode[] = "appKioskMode";
 // Dictionary field to store Cloud Print base URL.
 const char kCloudPrintUrl[] = "cloudPrintUrl";
 #if defined(OS_WIN)
 const char kHidePrintWithSystemDialogLink[] = "hidePrintWithSystemDialogLink";
 #endif
 // Name of a dictionary field holding the state of selection for document.
 const char kDocumentHasSelection[] = "documentHasSelection";
+// Dictionary field holding the default destination selection rules.
+const char kDefaultDestinationSelectionRules[] =
+    "defaultDestinationSelectionRules";
 
 // Id of the predefined PDF printer.
 const char kLocalPdfPrinterId[] = "Save as PDF";
 
 // Additional printer capability setting keys.
 const char kPrinterId[] = "printerId";
 const char kPrinterCapabilities[] = "capabilities";
 
 // Get the print job settings dictionary from |args|. The caller takes
 // ownership of the returned DictionaryValue. Returns NULL on failure.
@@ skipping 1067 matching lines @@
   base::DictionaryValue initial_settings;
   initial_settings.SetString(kInitiatorTitle,
                              print_preview_ui()->initiator_title());
   initial_settings.SetBoolean(printing::kSettingPreviewModifiable,
                               print_preview_ui()->source_is_modifiable());
   initial_settings.SetString(printing::kSettingPrinterName, default_printer);
   initial_settings.SetBoolean(kDocumentHasSelection,
                               print_preview_ui()->source_has_selection());
   initial_settings.SetBoolean(printing::kSettingShouldPrintSelectionOnly,
                               print_preview_ui()->print_selection_only());
+  PrefService* prefs = Profile::FromBrowserContext(
+      preview_web_contents()->GetBrowserContext())->GetPrefs();
   printing::StickySettings* sticky_settings = GetStickySettings();
-  sticky_settings->RestoreFromPrefs(Profile::FromBrowserContext(
-      preview_web_contents()->GetBrowserContext())->GetPrefs());
+  sticky_settings->RestoreFromPrefs(prefs);
   if (sticky_settings->printer_app_state()) {
     initial_settings.SetString(kAppState,
                                *sticky_settings->printer_app_state());
   }
 
   base::CommandLine* cmdline = base::CommandLine::ForCurrentProcess();
   initial_settings.SetBoolean(kPrintAutomaticallyInKioskMode,
                               cmdline->HasSwitch(switches::kKioskModePrinting));
   initial_settings.SetBoolean(kAppKioskMode,
                               chrome::IsRunningInForcedAppMode());
 #if defined(OS_WIN)
   // In Win8 metro, the system print dialog can only open on the desktop.  Doing
   // so will cause the browser to appear hung, so we don't show the link in
   // metro.
   bool is_ash = (chrome::GetActiveDesktop() == chrome::HOST_DESKTOP_TYPE_ASH);
   initial_settings.SetBoolean(kHidePrintWithSystemDialogLink, is_ash);
 #endif
+  if (prefs) {
+    const std::string rules_str =
+        prefs->GetString(prefs::kPrintPreviewDefaultDestinationSelectionRules);
+    if (!rules_str.empty())
+      initial_settings.SetString(kDefaultDestinationSelectionRules, rules_str);
+  }
 
   if (print_preview_ui()->source_is_modifiable())
     GetNumberFormatAndMeasurementSystem(&initial_settings);
   web_ui()->CallJavascriptFunction("setInitialSettings", initial_settings);
 
   WebContents* initiator = GetInitiator();
   if (initiator && cmdline->HasSwitch(switches::kEnableDomDistiller) &&
       dom_distiller::url_utils::IsUrlDistillable(
           initiator->GetLastCommittedURL())) {
     dom_distiller::IsDistillablePage(
@@ skipping 517 matching lines @@
 
 void PrintPreviewHandler::UnregisterForGaiaCookieChanges() {
   if (gaia_cookie_manager_service_)
     gaia_cookie_manager_service_->RemoveObserver(this);
 }
 
 void PrintPreviewHandler::SetPdfSavedClosureForTesting(
     const base::Closure& closure) {
   pdf_file_saved_closure_ = closure;
 }