Initial support for cloudprint in print preview

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 <string>
 
+#include "base/base64.h"
+#include "base/command_line.h"

[Lei Zhang, 2011/06/09 21:23:30]

move to inside a #if !defined(OS_CHROMEOS) block. Ditto for chrome_switches.h
below.

[Albert Bodenhamer, 2011/06/10 01:29:36]

Done.

 #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/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/printing/background_printing_manager.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_url.h"
 #include "chrome/browser/printing/printer_manager_dialog.h"
 #include "chrome/browser/printing/print_preview_tab_controller.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/print_preview_ui.h"
 #include "chrome/common/chrome_paths.h"
+#include "chrome/common/chrome_switches.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 "net/base/escape.h"
 #include "printing/backend/print_backend.h"
 #include "printing/metafile.h"
 #include "printing/metafile_impl.h"
 #include "printing/page_range.h"
 #include "printing/print_job_constants.h"
+#include "webkit/glue/webpreferences.h"

[Lei Zhang, 2011/06/09 21:23:30]

not used, ditto for escape.h above.

[Albert Bodenhamer, 2011/06/10 01:29:36]

Done.

 
 #if defined(USE_CUPS)
 #include <cups/cups.h>
 
 #include "base/file_util.h"
 #endif
 
 namespace {
 
 const bool kColorDefaultValue = false;
@@ skipping 168 matching lines @@
       printer_info->SetString(printing::kSettingDeviceName, iter->printer_name);
       printers->Append(printer_info);
       if (iter->is_default)
         default_printer_index = i;
     }
     VLOG(1) << "Enumerate printers finished, found " << i << " printers";
 
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         NewRunnableMethod(this,
-                          &PrintSystemTaskProxy::SendPrinterList,
+                          &PrintSystemTaskProxy::SetupPrinterList,
                           printers,
                           new FundamentalValue(default_printer_index)));
   }
 
-  void SendPrinterList(ListValue* printers,
+  void SetupPrinterList(ListValue* printers,
                        FundamentalValue* default_printer_index) {
-    if (handler_)
-      handler_->SendPrinterList(*printers, *default_printer_index);
+    if (handler_) {
+      handler_->SetupPrinterList(*printers, *default_printer_index);
+    }
     delete printers;
     delete default_printer_index;
   }
 
   void GetPrinterCapabilities(const std::string& printer_name) {
     VLOG(1) << "Get printer capabilities start for " << printer_name;
     printing::PrinterCapsAndDefaults printer_info;
     bool supports_color = true;
     if (!print_backend_->GetPrinterCapsAndDefaults(printer_name,
                                                    &printer_info)) {
@@ skipping 115 matching lines @@
   web_ui_->RegisterMessageCallback("getPrinters",
       NewCallback(this, &PrintPreviewHandler::HandleGetPrinters));
   web_ui_->RegisterMessageCallback("getPreview",
       NewCallback(this, &PrintPreviewHandler::HandleGetPreview));
   web_ui_->RegisterMessageCallback("print",
       NewCallback(this, &PrintPreviewHandler::HandlePrint));
   web_ui_->RegisterMessageCallback("getPrinterCapabilities",
       NewCallback(this, &PrintPreviewHandler::HandleGetPrinterCapabilities));
   web_ui_->RegisterMessageCallback("showSystemDialog",
       NewCallback(this, &PrintPreviewHandler::HandleShowSystemDialog));
-  web_ui_->RegisterMessageCallback("managePrinters",
+  web_ui_->RegisterMessageCallback("morePrinters",
+      NewCallback(this, &PrintPreviewHandler::HandleShowSystemDialog));
+  web_ui_->RegisterMessageCallback("signIn",
+      NewCallback(this, &PrintPreviewHandler::HandleManageCloudPrint));
+  web_ui_->RegisterMessageCallback("addPrinter",
+      NewCallback(this, &PrintPreviewHandler::HandleManageCloudPrint));
+  web_ui_->RegisterMessageCallback("manageCloudPrinters",
+      NewCallback(this, &PrintPreviewHandler::HandleManageCloudPrint));
+  web_ui_->RegisterMessageCallback("manageLocalPrinters",
       NewCallback(this, &PrintPreviewHandler::HandleManagePrinters));
   web_ui_->RegisterMessageCallback("closePrintPreviewTab",
       NewCallback(this, &PrintPreviewHandler::HandleClosePreviewTab));
 }
 
 TabContents* PrintPreviewHandler::preview_tab() {
   return web_ui_->tab_contents();
 }
 
 void PrintPreviewHandler::HandleGetDefaultPrinter(const ListValue*) {
@@ skipping 37 matching lines @@
   if (!settings.get())
     return;
 
   VLOG(1) << "Print preview request start";
   RenderViewHost* rvh = initiator_tab->render_view_host();
   rvh->Send(new PrintMsg_PrintPreview(rvh->routing_id(), *settings));
 }
 
 void PrintPreviewHandler::HandlePrint(const ListValue* args) {
   ReportStats();
-
   // Record the number of times the user requests to regenerate preview data
   // before printing.
   UMA_HISTOGRAM_COUNTS("PrintPreview.RegeneratePreviewRequest.BeforePrint",
                        regenerate_preview_request_count_);
 
   TabContents* initiator_tab = GetInitiatorTab();
   if (initiator_tab) {
     RenderViewHost* rvh = initiator_tab->render_view_host();
     rvh->Send(new PrintMsg_ResetScriptedPrintCount(rvh->routing_id()));
   }
 
   scoped_ptr<DictionaryValue> settings(GetSettingsDictionary(args));
   if (!settings.get())
     return;
 
   bool print_to_pdf = false;
   settings->GetBoolean(printing::kSettingPrintToPDF, &print_to_pdf);
 
   TabContentsWrapper* preview_tab_wrapper =
       TabContentsWrapper::GetCurrentWrapperForContents(preview_tab());
 
-  if (print_to_pdf) {
+  bool print_to_cloud = settings->HasKey(printing::kSettingCloudPrintId);
+  if (print_to_cloud) {
+    std::string print_ticket;
+    args->GetString(1, &print_ticket);
+    SendCloudPrintJob(*settings, print_ticket);
+  } else if (print_to_pdf) {
     ReportUserActionHistogram(PRINT_TO_PDF);
     UMA_HISTOGRAM_COUNTS("PrintPreview.PageCount.PrintToPDF",
                          GetPageCountFromSettingsDictionary(*settings));
 
     // Pre-populating select file dialog with print job title.
     string16 print_job_title_utf16 =
         preview_tab_wrapper->print_view_manager()->RenderSourceName();
 
 #if defined(OS_WIN)
     FilePath::StringType print_job_title(print_job_title_utf16);
@@ skipping 12 matching lines @@
     ReportUserActionHistogram(PRINT_TO_PRINTER);
     UMA_HISTOGRAM_COUNTS("PrintPreview.PageCount.PrintToPrinter",
                          GetPageCountFromSettingsDictionary(*settings));
     g_browser_process->background_printing_manager()->OwnTabContents(
         preview_tab_wrapper);
 
     // The PDF being printed contains only the pages that the user selected,
     // so ignore the page range and print all pages.
     settings->Remove(printing::kSettingPageRange, NULL);
     RenderViewHost* rvh = web_ui_->GetRenderViewHost();
-    rvh->Send(new PrintMsg_PrintForPrintPreview(rvh->routing_id(), *settings));
+    rvh->Send(new PrintMsg_PrintForPrintPreview(rvh->routing_id(),

[Lei Zhang, 2011/06/09 21:23:30]

nit: this is an unnecessary change.

[Albert Bodenhamer, 2011/06/10 01:29:36]

Done.

+                                                *settings));
   }
 }
 
 void PrintPreviewHandler::HandleGetPrinterCapabilities(
     const ListValue* args) {
   std::string printer_name;
   bool ret = args->GetString(0, &printer_name);
   if (!ret || printer_name.empty())
     return;
 
   scoped_refptr<PrintSystemTaskProxy> task =
       new PrintSystemTaskProxy(AsWeakPtr(),
                                print_backend_.get(),
                                has_logged_printers_count_);
 
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(task.get(),
                         &PrintSystemTaskProxy::GetPrinterCapabilities,
                         printer_name));
 }
 
+void PrintPreviewHandler::HandleManageCloudPrint(const ListValue* args) {
+  Browser* browser = BrowserList::GetLastActive();
+  browser->OpenURL(CloudPrintURL(browser->profile()).
+                   GetCloudPrintServiceManageURL(),
+                   GURL(),
+                   NEW_FOREGROUND_TAB,
+                   PageTransition::LINK);
+}
+
 void PrintPreviewHandler::HandleShowSystemDialog(const ListValue* args) {
   ReportStats();
   ReportUserActionHistogram(FALLBACK_TO_ADVANCED_SETTINGS_DIALOG);
 
   TabContents* initiator_tab = GetInitiatorTab();
   if (!initiator_tab)
     return;
   initiator_tab->Activate();
 
   TabContentsWrapper* wrapper =
@@ skipping 37 matching lines @@
   VLOG(1) << "Get printer capabilities finished";
   web_ui_->CallJavascriptFunction("updateWithPrinterCapabilities",
                                   settings_info);
 }
 
 void PrintPreviewHandler::SendDefaultPrinter(
     const StringValue& default_printer) {
   web_ui_->CallJavascriptFunction("setDefaultPrinter", default_printer);
 }
 
-void PrintPreviewHandler::SendPrinterList(
+void PrintPreviewHandler::SetupPrinterList(
     const ListValue& printers,
     const FundamentalValue& default_printer_index) {
+  SendCloudPrintEnabled();
   web_ui_->CallJavascriptFunction("setPrinters", printers,
-                                  default_printer_index);
+                                  default_printer_index,
+                                  *(Value::CreateBooleanValue(true)));
+}
+
+void PrintPreviewHandler::SendCloudPrintEnabled() {
+#if defined(OS_CHROMEOS)
+  bool enable_cloud_print_integration = true;
+#else
+  bool enable_cloud_print_integration =
+      CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableCloudPrint);
+#endif
+  GURL gcp_url(CloudPrintURL(BrowserList::GetLastActive()->profile()).
+               GetCloudPrintServiceURL());
+  if (enable_cloud_print_integration) {
+    RenderViewHost* rvh = web_ui_->GetRenderViewHost();
+    rvh->Send(new PrintMsg_PrintSetupWhitelist(rvh->routing_id(),
+                                               gcp_url.host()));
+  }
+  FundamentalValue enable(enable_cloud_print_integration);
+  StringValue gcp_url_value(gcp_url.spec());
+  web_ui_->CallJavascriptFunction("setUseCloudPrint", enable, 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->GetPrintPreviewData(&data);
+  CHECK(data->front());
+  DCHECK_GT(data->size(), 0U);
+
+  // BASE64 encode the job data.
+  std::string raw_data(reinterpret_cast<const char*>(data->front()),
+                       data->size());
+  std::string base64_data;
+  if (!base::Base64Encode(raw_data, &base64_data)) {
+    NOTREACHED() << "Base64 encoding PDF data.";
+  }
+
+  TabContentsWrapper* wrapper =
+      TabContentsWrapper::GetCurrentWrapperForContents(preview_tab());
+  string16 print_job_title_utf16 =
+      wrapper->print_view_manager()->RenderSourceName();
+  std::string print_job_title = UTF16ToUTF8(print_job_title_utf16);
+  std::string printer_id;
+  settings.GetString("cloudPrintID", &printer_id);
+
+  const char prolog[] = "------CloudPrintFormBoundaryjc9wuprokl8i\r\n"
+    "Content-Disposition: form-data; name=\"capabilities\"\r\n\r\n%s\r\n"
+    "------CloudPrintFormBoundaryjc9wuprokl8i\r\n"
+    "Content-Disposition: form-data; name=\"contentType\"\r\n\r\ndataUrl\r\n"
+    "------CloudPrintFormBoundaryjc9wuprokl8i\r\n"
+    "Content-Disposition: form-data; name=\"title\"\r\n\r\n%s\r\n"
+    "------CloudPrintFormBoundaryjc9wuprokl8i\r\n"
+    "Content-Disposition: form-data; name=\"printerid\"\r\n\r\n%s\r\n"
+    "------CloudPrintFormBoundaryjc9wuprokl8i\r\n"
+    "Content-Disposition: form-data; name=\"content\"\r\n\r\n"
+    "data:application/pdf;base64,%s\r\n"
+    "------CloudPrintFormBoundaryjc9wuprokl8i\r\n";
+
+  std::string final_data;
+  base::SStringPrintf(&final_data,
+                      prolog,
+                      print_ticket.c_str(),
+                      print_job_title.c_str(),
+                      printer_id.c_str(),
+                      base64_data.c_str());
+
+  StringValue data_value(final_data);
+
+  web_ui_->CallJavascriptFunction("printToCloud",
+                                  data_value);
 }
 
 TabContents* PrintPreviewHandler::GetInitiatorTab() {
   printing::PrintPreviewTabController* tab_controller =
       printing::PrintPreviewTabController::GetInstance();
   if (!tab_controller)
     return NULL;
   return tab_controller->GetInitiatorTab(preview_tab());
 }
 
 void PrintPreviewHandler::ClosePrintPreviewTab() {
+  RenderViewHost* rvh = web_ui_->GetRenderViewHost();
+  GURL gcp_url(CloudPrintURL(BrowserList::GetLastActive()->profile()).
+               GetCloudPrintServiceURL());
+  rvh->Send(new PrintMsg_PrintTeardownWhitelist(rvh->routing_id(),
+                                                gcp_url.host()));
   Browser* preview_tab_browser = BrowserList::FindBrowserWithID(
       preview_tab()->controller().window_id().id());
   if (!preview_tab_browser)
     return;
   TabStripModel* tabstrip = preview_tab_browser->tabstrip_model();
 
   // Keep print preview tab out of the recently closed tab list, because
   // re-opening that page will just display a non-functional print preview page.
   tabstrip->CloseTabContentsAt(tabstrip->GetIndexOfController(
       &preview_tab()->controller()), TabStripModel::CLOSE_NONE);
@@ skipping 43 matching lines @@
   metafile->InitFromData(static_cast<const void*>(data->front()), data->size());
 
   // Updating last_saved_path_ to the newly selected folder.
   *last_saved_path_ = path.DirName();
 
   PrintToPdfTask* task = new PrintToPdfTask(metafile, path);
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE, task);
 
   ActivateInitiatorTabAndClosePreviewTab();
 }