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// Copyright 2013 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.
#ifndef PRINTING_PRINTING_CONTEXT_ANDROID_H_
#define PRINTING_PRINTING_CONTEXT_ANDROID_H_
#include <string>
#include "base/android/scoped_java_ref.h"
#include "base/file_descriptor_posix.h"
#include "base/macros.h"
#include "printing/printing_context.h"
namespace ui {
class WindowAndroid;
}
namespace printing {
class MetafilePlayer;
// Android subclass of PrintingContext. This class communicates with the
// Java side through JNI.
class PRINTING_EXPORT PrintingContextAndroid : public PrintingContext {
public:
explicit PrintingContextAndroid(Delegate* delegate);
~PrintingContextAndroid() override;
// Called when the page is successfully written to a PDF using the file
// descriptor specified, or when the printing operation failed. On success,
// the PDF has |page_count| pages. Non-positive |page_count| indicates
// failure.
static void PdfWritingDone(int page_count);
static void SetPendingPrint(
ui::WindowAndroid* window,
const base::android::ScopedJavaLocalRef<jobject>& printable,
int render_process_id,
int render_frame_id);
// Called from Java, when printing settings from the user are ready or the
// printing operation is canceled.
void AskUserForSettingsReply(JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj,
jboolean success);
// Called from Java, when a printing process initiated by a script finishes.
void ShowSystemDialogDone(JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj);
// Prints the document contained in |metafile|.
void PrintDocument(const MetafilePlayer& metafile);
// PrintingContext implementation.
void AskUserForSettings(int max_pages,
bool has_selection,
bool is_scripted,
PrintSettingsCallback callback) override;
Result UseDefaultSettings() override;
gfx::Size GetPdfPaperSizeDeviceUnits() override;
Result UpdatePrinterSettings(bool external_preview,
bool show_system_dialog,
int page_count) override;
Result NewDocument(const base::string16& document_name) override;
Result NewPage() override;
Result PageDone() override;
Result DocumentDone() override;
void Cancel() override;
void ReleaseContext() override;
printing::NativeDrawingContext context() const override;
private:
bool is_file_descriptor_valid() const { return fd_ > base::kInvalidFd; }
base::android::ScopedJavaGlobalRef<jobject> j_printing_context_;
// The callback from AskUserForSettings to be called when the settings are
// ready on the Java side
PrintSettingsCallback callback_;
int fd_ = base::kInvalidFd;
DISALLOW_COPY_AND_ASSIGN(PrintingContextAndroid);
};
} // namespace printing
#endif // PRINTING_PRINTING_CONTEXT_ANDROID_H_
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