Print Preview: Hold on to tabs that do window.print(); window.close() until print preview finishes.

chrome/browser/ui/browser.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/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // OS_WIN
@@ skipping 43 matching lines @@
 #include "chrome/browser/infobars/infobar_tab_helper.h"
 #include "chrome/browser/instant/instant_controller.h"
 #include "chrome/browser/instant/instant_unload_handler.h"
 #include "chrome/browser/intents/register_intent_handler_infobar_delegate.h"
 #include "chrome/browser/net/browser_url_util.h"
 #include "chrome/browser/net/url_fixer_upper.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prefs/incognito_mode_prefs.h"
 #include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/printing/background_printing_manager.h"
 #include "chrome/browser/printing/cloud_print/cloud_print_setup_flow.h"
 #include "chrome/browser/printing/print_preview_tab_controller.h"
 #include "chrome/browser/printing/print_view_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/restore_tab_helper.h"
 #include "chrome/browser/sessions/session_service.h"
 #include "chrome/browser/sessions/session_service_factory.h"
 #include "chrome/browser/sessions/session_types.h"
 #include "chrome/browser/sessions/tab_restore_service.h"
 #include "chrome/browser/sessions/tab_restore_service_factory.h"
@@ skipping 3366 matching lines @@
 void Browser::CloseContents(TabContents* source) {
   if (is_attempting_to_close_browser_) {
     // If we're trying to close the browser, just clear the state related to
     // waiting for unload to fire. Don't actually try to close the tab as it
     // will go down the slow shutdown path instead of the fast path of killing
     // all the renderer processes.
     ClearUnloadState(source, true);
     return;
   }
 
+  // Various sites have a pattern which open a new window with output formatted
+  // for printing, then include a print button, which does window.print();
+  // window.close(); An example is printing Virgin America boarding
+  // pass. Instead of closing, when a print tab is associated with this tab,
+  // tell the BackgroundPrintingManager to own it, which causes it to be
+  // hidden and eventually closed when the print window is closed.
+  TabContentsWrapper* source_wrapper =
+      TabContentsWrapper::GetCurrentWrapperForContents(source);
+  if (g_browser_process->background_printing_manager()->
+      OwnInitiatorTab(source_wrapper)) {

[kmadhusu, 2011/09/07 23:21:10]

nit: Fix indentation.

[Lei Zhang, 2011/09/07 23:41:16]

Done.

+    return;
+  }
+
   int index = tab_handler_->GetTabStripModel()->GetWrapperIndex(source);
   if (index == TabStripModel::kNoTab) {
     NOTREACHED() << "CloseContents called for tab not in our strip";
     return;
   }
   tab_handler_->GetTabStripModel()->CloseTabContentsAt(
       index,
       TabStripModel::CLOSE_CREATE_HISTORICAL_TAB);
 }
 
@@ skipping 1728 matching lines @@
       profile()->GetOriginalProfile()->GetProfileSyncService();
   if (service->HasSyncSetupCompleted())
     ShowOptionsTab(chrome::kSyncSetupSubPage);
   else
     service->ShowLoginDialog();
 }
 
 void Browser::ToggleSpeechInput() {
   GetSelectedTabContentsWrapper()->render_view_host()->ToggleSpeechInput();
 }