Added support to the Windows cloud print proxy to print XPS documents directl...

chrome/service/cloud_print/print_system_cups.cc

 // Copyright (c) 2010 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/service/cloud_print/print_system.h"
 
 #include <cups/cups.h>
 #include <dlfcn.h>
 #include <errno.h>
 #include <pthread.h>
@@ skipping 77 matching lines @@
                                    const std::string& print_ticket_data);
 
   virtual bool GetJobDetails(const std::string& printer_name,
                              PlatformJobId job_id,
                              PrintJobDetails *job_details);
 
   virtual PrintSystem::PrintServerWatcher* CreatePrintServerWatcher();
   virtual PrintSystem::PrinterWatcher* CreatePrinterWatcher(
       const std::string& printer_name);
   virtual PrintSystem::JobSpooler* CreateJobSpooler();
+  virtual std::string GetSupportedMimeTypes();
 
   // Helper functions.
   PlatformJobId SpoolPrintJob(const std::string& print_ticket,
                               const FilePath& print_data_file_path,
                               const std::string& print_data_mime_type,
                               const std::string& printer_name,
                               const std::string& job_title,
                               const std::vector<std::string>& tags,
                               bool* dry_run);
   bool GetPrinterInfo(const std::string& printer_name,
@@ skipping 529 matching lines @@
   DCHECK(initialized_);
   DCHECK(!printer_name.empty());
   return new PrinterWatcherCUPS(this, printer_name);
 }
 
 PrintSystem::JobSpooler* PrintSystemCUPS::CreateJobSpooler() {
   DCHECK(initialized_);
   return new JobSpoolerCUPS(this);
 }
 
+std::string PrintSystemCUPS::GetSupportedMimeTypes() {
+  // Since we hand off the document to the CUPS server directly, list some types
+  // that we know CUPS supports (http://www.cups.org/articles.php?L205+TFAQ+Q)
+  // TODO(sanjeevr): Determine this dynamically.

[Scott Byer, 2011/02/17 00:31:02]

A bug + link for the TODO?

[sanjeevr, 2011/02/17 00:53:52]

Done.

+  return
+      "application/pdf,application/postscript,image/jpeg,image/png,image/gif";
+}
+
 std::string PrintSystem::GenerateProxyId() {
   // TODO(gene): This code should generate a unique id for proxy. ID should be
   // unique for this user. Rand may return the same number. We'll need to change
   // this in the future.
   std::string id("CP_PROXY_");
   id += base::Uint64ToString(base::RandUint64());
   return id;
 }
 
 scoped_refptr<PrintSystem> PrintSystem::CreateInstance(
@@ skipping 123 matching lines @@
 void PrintSystemCUPS::RunCapsCallback(
     PrinterCapsAndDefaultsCallback* callback,
     bool succeeded,
     const std::string& printer_name,
     const printing::PrinterCapsAndDefaults& printer_info) {
   callback->Run(succeeded, printer_name, printer_info);
   delete callback;
 }
 
 }  // namespace cloud_print