Printing: Convert PrintingContext into an interface implemented by the separate

printing/printing_context_mac.mm

 // Copyright (c) 2009 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 "printing/printing_context.h"
+#include "printing/printing_context_mac.h"
 
 #import <ApplicationServices/ApplicationServices.h>
 #import <AppKit/AppKit.h>
 
 #include "base/logging.h"
+#include "base/scoped_cftyperef.h"
 #include "base/sys_string_conversions.h"
 
 namespace printing {
 
-PrintingContext::PrintingContext()
-    : context_(NULL),
-      print_info_(nil),
-      dialog_box_dismissed_(false),
-      in_print_job_(false),
-      abort_printing_(false) {
+// static
+PrintingContext* PrintingContext::Create() {
+  return static_cast<PrintingContext*>(new PrintingContextMac);
 }
 
-PrintingContext::~PrintingContext() {
-  ResetSettings();
+PrintingContextMac::PrintingContextMac()
+    : PrintingContext(),
+      print_info_(NULL),
+      context_(NULL) {
 }
 
+PrintingContextMac::~PrintingContextMac() {
+  ReleaseContext();
+}
 
-void PrintingContext::AskUserForSettings(gfx::NativeView parent_view,
-                                         int max_pages,
-                                         bool has_selection,
-                                         PrintSettingsCallback* callback) {
+void PrintingContextMac::AskUserForSettings(gfx::NativeView parent_view,
+                                            int max_pages,
+                                            bool has_selection,
+                                            PrintSettingsCallback* callback) {
   DCHECK([NSThread isMainThread]);
 
   // We deliberately don't feed max_pages into the dialog, because setting
   // NSPrintLastPage makes the print dialog pre-select the option to only print
   // a range.
 
   // TODO(stuartmorgan): implement 'print selection only' (probably requires
   // adding a new custom view to the panel on 10.5; 10.6 has
   // NSPrintPanelShowsPrintSelection).
   NSPrintPanel* panel = [NSPrintPanel printPanel];
@@ skipping 19 matching lines @@
   // Will require restructuring the PrintingContext API to use a callback.
   NSInteger selection = [panel runModalWithPrintInfo:printInfo];
   if (selection == NSOKButton) {
     ParsePrintInfo([panel printInfo]);
     callback->Run(OK);
   } else {
     callback->Run(CANCEL);
   }
 }
 
-PrintingContext::Result PrintingContext::UseDefaultSettings() {
+PrintingContext::Result PrintingContextMac::UseDefaultSettings() {
   DCHECK(!in_print_job_);
 
   ParsePrintInfo([NSPrintInfo sharedPrintInfo]);
 
   return OK;
 }
 
-void PrintingContext::ParsePrintInfo(NSPrintInfo* print_info) {
+void PrintingContextMac::ParsePrintInfo(NSPrintInfo* print_info) {
   ResetSettings();
   print_info_ = [print_info retain];
   PageRanges page_ranges;
   NSDictionary* print_info_dict = [print_info_ dictionary];
   if (![[print_info_dict objectForKey:NSPrintAllPages] boolValue]) {
     PageRange range;
     range.from = [[print_info_dict objectForKey:NSPrintFirstPage] intValue] - 1;
     range.to = [[print_info_dict objectForKey:NSPrintLastPage] intValue] - 1;
     page_ranges.push_back(range);
   }
   PMPrintSession print_session =
       static_cast<PMPrintSession>([print_info_ PMPrintSession]);
   PMPageFormat page_format =
       static_cast<PMPageFormat>([print_info_ PMPageFormat]);
   PMPrinter printer;
   PMSessionGetCurrentPrinter(print_session, &printer);
 
   settings_.Init(printer, page_format, page_ranges, false);
 }
 
-PrintingContext::Result PrintingContext::InitWithSettings(
+PrintingContext::Result PrintingContextMac::InitWithSettings(
     const PrintSettings& settings) {
   DCHECK(!in_print_job_);
   settings_ = settings;
 
   NOTIMPLEMENTED();
 
   return FAILED;
 }
 
-void PrintingContext::ResetSettings() {
-  [print_info_ autorelease];
-  print_info_ = nil;
-  settings_.Clear();
-  dialog_box_dismissed_ = false;
-  abort_printing_ = false;
-  in_print_job_ = false;
-  context_ = NULL;
-}
-
-PrintingContext::Result PrintingContext::NewDocument(
+PrintingContext::Result PrintingContextMac::NewDocument(
     const string16& document_name) {
   DCHECK(!in_print_job_);
 
   in_print_job_ = true;
 
   PMPrintSession print_session =
       static_cast<PMPrintSession>([print_info_ PMPrintSession]);
   PMPrintSettings print_settings =
       static_cast<PMPrintSettings>([print_info_ PMPrintSettings]);
   PMPageFormat page_format =
       static_cast<PMPageFormat>([print_info_ PMPageFormat]);
 
   scoped_cftyperef<CFStringRef> job_title(
       base::SysUTF16ToCFStringRef(document_name));
   PMPrintSettingsSetJobName(print_settings, job_title.get());
 
   OSStatus status = PMSessionBeginCGDocumentNoDialog(print_session,
                                                      print_settings,
                                                      page_format);
   if (status != noErr)
     return OnError();
 
   return OK;
 }
 
-PrintingContext::Result PrintingContext::NewPage() {
+PrintingContext::Result PrintingContextMac::NewPage() {
   if (abort_printing_)
     return CANCEL;
   DCHECK(in_print_job_);
   DCHECK(!context_);
 
   PMPrintSession print_session =
       static_cast<PMPrintSession>([print_info_ PMPrintSession]);
   PMPageFormat page_format =
       static_cast<PMPageFormat>([print_info_ PMPageFormat]);
   OSStatus status;
   status = PMSessionBeginPageNoDialog(print_session, page_format, NULL);
   if (status != noErr)
     return OnError();
   status = PMSessionGetCGGraphicsContext(print_session, &context_);
   if (status != noErr)
     return OnError();
 
   return OK;
 }
 
-PrintingContext::Result PrintingContext::PageDone() {
+PrintingContext::Result PrintingContextMac::PageDone() {
   if (abort_printing_)
     return CANCEL;
   DCHECK(in_print_job_);
   DCHECK(context_);
 
   PMPrintSession print_session =
       static_cast<PMPrintSession>([print_info_ PMPrintSession]);
   OSStatus status = PMSessionEndPageNoDialog(print_session);
   if (status != noErr)
     OnError();
   context_ = NULL;
 
   return OK;
 }
 
-PrintingContext::Result PrintingContext::DocumentDone() {
+PrintingContext::Result PrintingContextMac::DocumentDone() {
   if (abort_printing_)
     return CANCEL;
   DCHECK(in_print_job_);
 
   PMPrintSession print_session =
       static_cast<PMPrintSession>([print_info_ PMPrintSession]);
   OSStatus status = PMSessionEndDocumentNoDialog(print_session);
   if (status != noErr)
     OnError();
 
   ResetSettings();
   return OK;
 }
 
-void PrintingContext::Cancel() {
+void PrintingContextMac::Cancel() {
   abort_printing_ = true;
   in_print_job_ = false;
   context_ = NULL;
 
   PMPrintSession print_session =
       static_cast<PMPrintSession>([print_info_ PMPrintSession]);
   PMSessionEndPageNoDialog(print_session);
 }
 
-void PrintingContext::DismissDialog() {
+void PrintingContextMac::DismissDialog() {
   NOTIMPLEMENTED();
 }
 
-PrintingContext::Result PrintingContext::OnError() {
-  ResetSettings();
-  return abort_printing_ ? CANCEL : FAILED;
+void PrintingContextMac::ReleaseContext() {
+  if (print_info_) {
+    [print_info_ autorelease];
+    print_info_ = nil;
+    context_ = NULL;
+  }
+}
+
+gfx::NativeDrawingContext PrintingContextMac::context() const {
+  return context_;
 }
 
 }  // namespace printing