Printing: Convert PrintingContext into an interface implemented by the separate

printing/printing_context_mac.mm

Index: printing/printing_context_mac.mm
diff --git a/printing/printing_context_mac.mm b/printing/printing_context_mac.mm
index 828a7f4fb3a07776abd0b2e44d17d89c71a50009..50431ae63831137166e64f0d1ad74c5d70099e80 100644
--- a/printing/printing_context_mac.mm
+++ b/printing/printing_context_mac.mm
@@ -2,33 +2,36 @@
 // 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
@@ -68,7 +71,7 @@ void PrintingContext::AskUserForSettings(gfx::NativeView parent_view,
   }
 }
 
-PrintingContext::Result PrintingContext::UseDefaultSettings() {
+PrintingContext::Result PrintingContextMac::UseDefaultSettings() {
   DCHECK(!in_print_job_);
 
   ParsePrintInfo([NSPrintInfo sharedPrintInfo]);
@@ -76,7 +79,7 @@ PrintingContext::Result PrintingContext::UseDefaultSettings() {
   return OK;
 }
 
-void PrintingContext::ParsePrintInfo(NSPrintInfo* print_info) {
+void PrintingContextMac::ParsePrintInfo(NSPrintInfo* print_info) {
   ResetSettings();
   print_info_ = [print_info retain];
   PageRanges page_ranges;
@@ -97,7 +100,7 @@ void PrintingContext::ParsePrintInfo(NSPrintInfo* print_info) {
   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;
@@ -107,17 +110,7 @@ PrintingContext::Result PrintingContext::InitWithSettings(
   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_);
 
@@ -143,7 +136,7 @@ PrintingContext::Result PrintingContext::NewDocument(
   return OK;
 }
 
-PrintingContext::Result PrintingContext::NewPage() {
+PrintingContext::Result PrintingContextMac::NewPage() {
   if (abort_printing_)
     return CANCEL;
   DCHECK(in_print_job_);
@@ -164,7 +157,7 @@ PrintingContext::Result PrintingContext::NewPage() {
   return OK;
 }
 
-PrintingContext::Result PrintingContext::PageDone() {
+PrintingContext::Result PrintingContextMac::PageDone() {
   if (abort_printing_)
     return CANCEL;
   DCHECK(in_print_job_);
@@ -180,7 +173,7 @@ PrintingContext::Result PrintingContext::PageDone() {
   return OK;
 }
 
-PrintingContext::Result PrintingContext::DocumentDone() {
+PrintingContext::Result PrintingContextMac::DocumentDone() {
   if (abort_printing_)
     return CANCEL;
   DCHECK(in_print_job_);
@@ -195,7 +188,7 @@ PrintingContext::Result PrintingContext::DocumentDone() {
   return OK;
 }
 
-void PrintingContext::Cancel() {
+void PrintingContextMac::Cancel() {
   abort_printing_ = true;
   in_print_job_ = false;
   context_ = NULL;
@@ -205,13 +198,20 @@ void PrintingContext::Cancel() {
   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