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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebEngine module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
// 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.Chromium file.
#ifndef PRINT_VIEW_MANAGER_BASE_QT_H
#define PRINT_VIEW_MANAGER_BASE_QT_H
#include "base/memory/ref_counted_memory.h"
#include "components/prefs/pref_member.h"
#include "components/printing/browser/print_manager.h"
#include "components/printing/common/print.mojom-forward.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
namespace base {
class RefCountedBytes;
}
namespace content {
class RenderFrameHost;
}
namespace printing {
class JobEventDetails;
class PrintJob;
class PrintQueriesQueue;
class PrinterQuery;
}
namespace QtWebEngineCore {
class PrintViewManagerBaseQt : public content::NotificationObserver
, public printing::PrintManager
{
public:
~PrintViewManagerBaseQt() override;
// Whether printing is enabled or not.
void UpdatePrintingEnabled();
std::u16string RenderSourceName();
// mojom::PrintManagerHost:
void DidGetPrintedPagesCount(int32_t cookie, uint32_t number_pages) override;
void DidPrintDocument(printing::mojom::DidPrintDocumentParamsPtr params,
DidPrintDocumentCallback callback) override;
void GetDefaultPrintSettings(GetDefaultPrintSettingsCallback callback) override;
void UpdatePrintSettings(int32_t cookie, base::Value job_settings,
UpdatePrintSettingsCallback callback) override;
void ScriptedPrint(printing::mojom::ScriptedPrintParamsPtr,
printing::mojom::PrintManagerHost::ScriptedPrintCallback) override;
void ShowInvalidPrinterSettingsError() override;
void PrintingFailed(int32_t cookie) override;
protected:
explicit PrintViewManagerBaseQt(content::WebContents*);
void SetPrintingRFH(content::RenderFrameHost* rfh);
// Cancels the print job.
void NavigationStopped() override;
// content::WebContentsObserver implementation.
void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
// Creates a new empty print job. It has no settings loaded. If there is
// currently a print job, safely disconnect from it. Returns false if it is
// impossible to safely disconnect from the current print job or it is
// impossible to create a new print job.
virtual bool CreateNewPrintJob(std::unique_ptr<printing::PrinterQuery> query);
// Makes sure the current print_job_ has all its data before continuing, and
// disconnect from it.
void DisconnectFromCurrentPrintJob();
void StopWorker(int documentCookie);
private:
// content::NotificationObserver implementation.
void Observe(int,
const content::NotificationSource&,
const content::NotificationDetails&) override;
// content::WebContentsObserver implementation.
void DidStartLoading() override;
// Processes a NOTIFY_PRINT_JOB_EVENT notification.
void OnNotifyPrintJobEvent(const printing::JobEventDetails &event_details);
// Requests the RenderView to render all the missing pages for the print job.
// No-op if no print job is pending. Returns true if at least one page has
// been requested to the renderer.
bool RenderAllMissingPagesNow();
// Checks that synchronization is correct with |print_job_| based on |cookie|.
bool PrintJobHasDocument(int cookie);
// Starts printing the |document| in |print_job_| with the given |print_data|.
// This method assumes PrintJobHasDocument() has been called, and |print_data|
// contains valid data.
void PrintDocument(scoped_refptr<base::RefCountedMemory> print_data,
const gfx::Size &page_size,
const gfx::Rect &content_area,
const gfx::Point &offsets);
// Quits the current message loop if these conditions hold true: a document is
// loaded and is complete and waiting_for_pages_to_be_rendered_ is true. This
// function is called in DidPrintDocument(). The inner message loop was
// created by RenderAllMissingPagesNow().
void ShouldQuitFromInnerMessageLoop();
// Terminates the print job. No-op if no print job has been created. If
// |cancel| is true, cancel it instead of waiting for the job to finish. Will
// call ReleasePrintJob().
void TerminatePrintJob(bool cancel);
// Releases print_job_. Correctly deregisters from notifications. No-op if
// no print job has been created.
void ReleasePrintJob();
// Runs an inner message loop. It will set inside_inner_message_loop_ to true
// while the blocking inner message loop is running. This is useful in cases
// where the RenderView is about to be destroyed while a printing job isn't
// finished.
bool RunInnerMessageLoop();
// In the case of Scripted Printing, where the renderer is controlling the
// control flow, print_job_ is initialized whenever possible. No-op is
// print_job_ is initialized.
bool OpportunisticallyCreatePrintJob(int cookie);
// Release the PrinterQuery associated with our |cookie_|.
void ReleasePrinterQuery();
// Helper method for UpdatePrintingEnabled().
void SendPrintingEnabled(bool enabled, content::RenderFrameHost* rfh);
private:
content::NotificationRegistrar m_registrar;
scoped_refptr<printing::PrintJob> m_printJob;
content::RenderFrameHost *m_printingRFH;
bool m_didPrintingSucceed;
// Set while running an inner message loop inside RenderAllMissingPagesNow().
// This means we are _blocking_ until all the necessary pages have been
// rendered or the print settings are being loaded.
base::OnceClosure m_quitInnerLoop;
scoped_refptr<printing::PrintQueriesQueue> m_printerQueriesQueue;
DISALLOW_COPY_AND_ASSIGN(PrintViewManagerBaseQt);
};
} // namespace QtWebEngineCore
#endif // PRINT_VIEW_MANAGER_BASE_QT_H
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