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. This class communicates with the
  18 // Java side through JNI.
  19 class PRINTING_EXPORT PrintingContextAndroid : public PrintingContext {
  20  public:
  21   explicit PrintingContextAndroid(Delegate* delegate);
  22   ~PrintingContextAndroid() override;
  23
  24   // Called when the page is successfully written to a PDF using the file
  25   // descriptor specified, or when the printing operation failed.
  26   static void PdfWritingDone(int fd, bool success);
  27
  28   // Called from Java, when printing settings from the user are ready or the
  29   // printing operation is canceled.
  30   void AskUserForSettingsReply(JNIEnv* env, jobject obj, jboolean success);
  31
  32   // Called from Java, when a printing process initiated by a script finishes.
  33   void ShowSystemDialogDone(JNIEnv* env, jobject obj);
  34
  35   // PrintingContext implementation.
  36   void AskUserForSettings(int max_pages,
  37                           bool has_selection,
  38                           bool is_scripted,
  39                           const PrintSettingsCallback& callback) override;
  40   Result UseDefaultSettings() override;
  41   gfx::Size GetPdfPaperSizeDeviceUnits() override;
  42   Result UpdatePrinterSettings(bool external_preview,
  43                                bool show_system_dialog) override;
  44   Result InitWithSettings(const PrintSettings& settings) override;
  45   Result NewDocument(const base::string16& document_name) override;
  46   Result NewPage() override;
  47   Result PageDone() override;
  48   Result DocumentDone() override;
  49   void Cancel() override;
  50   void ReleaseContext() override;
  51   gfx::NativeDrawingContext context() const override;
  52
  53   // Registers JNI bindings for RegisterContext.
  54   static bool RegisterPrintingContext(JNIEnv* env);
  55
  56  private:
  57   base::android::ScopedJavaGlobalRef<jobject> j_printing_context_;
  58
  59   // The callback from AskUserForSettings to be called when the settings are
  60   // ready on the Java side
  61   PrintSettingsCallback callback_;
  62
  63   DISALLOW_COPY_AND_ASSIGN(PrintingContextAndroid);
  64 };
  65
  66 }  // namespace printing
  67
  68 #endif  // PRINTING_PRINTING_CONTEXT_ANDROID_H_
  69