/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the QtWebEngine module of the Qt Toolkit.
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** General Public License version 3 as published by the Free Software
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// This is based on chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc:
// Copyright (c) 2012 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.

#include "pepper_host_factory_qt.h"

#include "base/memory/ptr_util.h"
#include "build/build_config.h"
#include "chrome/browser/renderer_host/pepper/pepper_flash_clipboard_message_filter.h"
#include "content/public/browser/browser_ppapi_host.h"
#include "ppapi/host/message_filter_host.h"
#include "ppapi/host/ppapi_host.h"
#include "ppapi/host/resource_host.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/ppapi_permissions.h"

#include "pepper_flash_browser_host_qt.h"
#include "pepper_isolated_file_system_message_filter.h"

using ppapi::host::MessageFilterHost;
using ppapi::host::ResourceMessageFilter;

namespace QtWebEngineCore {

PepperHostFactoryQt::PepperHostFactoryQt(content::BrowserPpapiHost* host)
    : host_(host)
{
}

PepperHostFactoryQt::~PepperHostFactoryQt() {}

std::unique_ptr<ppapi::host::ResourceHost> PepperHostFactoryQt::CreateResourceHost(ppapi::host::PpapiHost* host,
        PP_Resource resource,
        PP_Instance instance,
        const IPC::Message& message)
{
    DCHECK(host == host_->GetPpapiHost());


    if (!host_->IsValidInstance(instance))
        return nullptr;

    // Flash interfaces.
    if (host_->GetPpapiHost()->permissions().HasPermission(ppapi::PERMISSION_FLASH)) {
        switch (message.type()) {
        case PpapiHostMsg_Flash_Create::ID:
            return base::WrapUnique(new PepperFlashBrowserHostQt(host_, instance, resource));
        case PpapiHostMsg_FlashClipboard_Create::ID: {
            scoped_refptr<ResourceMessageFilter> clipboard_filter(new chrome::PepperFlashClipboardMessageFilter);
            return base::WrapUnique(new MessageFilterHost(
                host_->GetPpapiHost(), instance, resource, clipboard_filter));
        }
        }
    }

    // Permissions for the following interfaces will be checked at the
    // time of the corresponding instance's methods calls (because
    // permission check can be performed only on the UI
    // thread). Currently these interfaces are available only for
    // whitelisted apps which may not have access to the other private
    // interfaces.
    if (message.type() == PpapiHostMsg_IsolatedFileSystem_Create::ID) {
        PepperIsolatedFileSystemMessageFilter* isolated_fs_filter = PepperIsolatedFileSystemMessageFilter::Create(instance, host_);
        if (!isolated_fs_filter)
            return nullptr;
        return base::WrapUnique(
            new MessageFilterHost(host_->GetPpapiHost(), instance, resource, isolated_fs_filter));
    }

    return nullptr;
}

}  // namespace QtWebEngineCore
