printing/printing_context_android.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PRINTING_PRINTING_CONTEXT_ANDROID_H_
   6 #define PRINTING_PRINTING_CONTEXT_ANDROID_H_
   7
   8 #include <jni.h>
   9
  10 #include <string>
  11
  12 #include "base/android/scoped_java_ref.h"
  13 #include "printing/printing_context.h"
  14
  15 namespace printing {
  16
  17 // Android subclass of PrintingContext.  The implementation for this header file
  18 // resides in Chrome for Android repository.  This class communicates with the
  19 // Java side through JNI.
  20 class PRINTING_EXPORT PrintingContextAndroid : public PrintingContext {
  21  public:
  22   explicit PrintingContextAndroid(Delegate* delegate);
  23   virtual ~PrintingContextAndroid();
  24
  25   // Called when the page is successfully written to a PDF using the file
  26   // descriptor specified, or when the printing operation failed.
  27   static void PdfWritingDone(int fd, bool success);
  28
  29   // Called from Java, when printing settings from the user are ready or the
  30   // printing operation is canceled.
  31   void AskUserForSettingsReply(JNIEnv* env, jobject obj, jboolean success);
  32
  33   // PrintingContext implementation.
  34   virtual void AskUserForSettings(
  35       int max_pages,
  36       bool has_selection,
  37       const PrintSettingsCallback& callback) override;
  38   virtual Result UseDefaultSettings() override;
  39   virtual gfx::Size GetPdfPaperSizeDeviceUnits() override;
  40   virtual Result UpdatePrinterSettings(bool external_preview,
  41                                        bool show_system_dialog) override;
  42   virtual Result InitWithSettings(const PrintSettings& settings) override;
  43   virtual Result NewDocument(const base::string16& document_name) override;
  44   virtual Result NewPage() override;
  45   virtual Result PageDone() override;
  46   virtual Result DocumentDone() override;
  47   virtual void Cancel() override;
  48   virtual void ReleaseContext() override;
  49   virtual gfx::NativeDrawingContext context() const override;
  50
  51   // Registers JNI bindings for RegisterContext.
  52   static bool RegisterPrintingContext(JNIEnv* env);
  53
  54  private:
  55   base::android::ScopedJavaGlobalRef<jobject> j_printing_context_;
  56
  57   // The callback from AskUserForSettings to be called when the settings are
  58   // ready on the Java side
  59   PrintSettingsCallback callback_;
  60
  61   DISALLOW_COPY_AND_ASSIGN(PrintingContextAndroid);
  62 };
  63
  64 }  // namespace printing
  65
  66 #endif  // PRINTING_PRINTING_CONTEXT_ANDROID_H_
  67