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"
 #include "base/i18n/file_util_icu.h"
 #include "base/json/json_reader.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/browser/ui/webui/print_preview_ui_html_source.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/print_job_constants.h"
+#include "webkit/glue/webpreferences.h"
 
 #if defined(USE_CUPS)
 #include <cups/cups.h>
 
 #include "base/file_util.h"
 #endif
 
 namespace {
 
 const bool kColorDefaultValue = false;
@@ skipping 100 matching lines @@
       printer_info->SetString(printing::kSettingDeviceName,
                               index->printer_name);
       printers->Append(printer_info);
       if (index->is_default)
         default_printer_index = i;
     }
 
     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) {
     printing::PrinterCapsAndDefaults printer_info;
     bool supports_color = true;
     if (!print_backend_->GetPrinterCapsAndDefaults(printer_name,
                                                    &printer_info)) {
       return;
@@ skipping 111 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::HandleGetPrinters(const ListValue*) {
@@ skipping 44 matching lines @@
   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) {
+    SendCloudPrintJob(*settings);
+  } else if (print_to_pdf) {
     UMA_HISTOGRAM_ENUMERATION(kUserAction,
                               PRINT_TO_PDF,
                               USERACTION_BUCKET_BOUNDARY);
 
     // 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 34 matching lines @@
                                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();
   UMA_HISTOGRAM_ENUMERATION(kUserAction,
                             FALLBACK_TO_ADVANCED_SETTINGS_DIALOG,
                             USERACTION_BUCKET_BOUNDARY);
 
   TabContents* initiator_tab = GetInitiatorTab();
   if (!initiator_tab)
     return;
   initiator_tab->Activate();
@@ skipping 40 matching lines @@
     initiator_tab->Activate();
   ClosePrintPreviewTab();
 }
 
 void PrintPreviewHandler::SendPrinterCapabilities(
     const DictionaryValue& settings_info) {
   web_ui_->CallJavascriptFunction("updateWithPrinterCapabilities",
                                   settings_info);
 }
 
-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
+  FundamentalValue enable(enable_cloud_print_integration);
+  Browser* browser = BrowserList::GetLastActive();
+  StringValue gcp_url(
+      CloudPrintURL(browser->profile()).GetCloudPrintServiceURL().spec());
+  web_ui_->CallJavascriptFunction("setUseCloudPrint", enable, gcp_url);
+}
+
+void PrintPreviewHandler::SendCloudPrintJob(const DictionaryValue& settings) {
+  PrintPreviewUIHTMLSource::PrintPreviewData data;
+  PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(web_ui_);
+  print_preview_ui->html_source()->GetPrintPreviewData(&data);
+  CHECK(data.first);
+  DCHECK_GT(data.second, 0U);
+  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);
+  print_job_title = EscapeQueryParamValue(print_job_title, false);
+  std::string printer_id;
+  settings.GetString("cloudPrintID", &printer_id);
+  const char prolog_base[] = "printerid=%s&"
+      "capabilities=%%7B%%22capabilities%%22%%3A%%5B%%5D%%7D&"

[sanjeevr, 2011/05/24 23:21:25]

Hmm, might it be more readable if the string was not encoded and then you called
an encode function on it?

[Albert Bodenhamer, 2011/06/09 17:33:11]

This is just copied/pasted from a successful print job.  Handling caps/print
ticket properly is my next task.  I'll take care of this at the same time. 
Until then, I'm added a TODO.

+      "contentType=dataUrl&"
+      "title=%s&"
+      "content=data%%3Aapplication%%2Fpdf%%3Bbase64%%2C";
+  std::string prolog;
+  base::SStringPrintf(&prolog,
+                      prolog_base,
+                      printer_id.c_str(),
+                      print_job_title.c_str());
+  std::string raw_data;
+  raw_data.assign(reinterpret_cast<char*>(data.first->memory()), data.second);
+  std::string base64_data;
+  if (!base::Base64Encode(raw_data, &base64_data)) {
+    NOTREACHED() << "Base64 encoding PDF data.";
+  }
+
+  char* buffer;
+  size_t buffer_size = prolog.length() + base64_data.length();
+  buffer = new char[buffer_size];
+  memcpy(buffer, prolog.c_str(), prolog.length());
+  memcpy(buffer + prolog.length(), base64_data.c_str(),

[Scott Byer, 2011/05/24 23:40:32]

Hmm, what about just adding the base64 encoded stuff to the end of the
SStringPrintf?

[Albert Bodenhamer, 2011/06/09 17:33:11]

Good call.  That makes the code much cleaner.  Done.

+         base64_data.length());
+  scoped_ptr<BinaryValue> data_value(BinaryValue::Create(buffer, buffer_size));

[Scott Byer, 2011/05/24 23:40:32]

Shouldn't need to be a BinaryValue anymore with the base64 encoding -
StringValue should suffice.

[Albert Bodenhamer, 2011/06/09 17:33:11]

Done.

+
+  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());
 }
 
@@ skipping 54 matching lines @@
   metafile->InitFromData(data.first->memory(), data.second);
 
   // 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();
 }