/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <QUrl>
#include <KFileWidget>

#include "gtk3_kde5_filepicker.hxx"

#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <cppuhelper/supportsservice.hxx>
#include <com/sun/star/ui/dialogs/TemplateDescription.hpp>
#include <com/sun/star/ui/dialogs/CommonFilePickerElementIds.hpp>
#include <com/sun/star/ui/dialogs/ExtendedFilePickerElementIds.hpp>

#include <sal/log.hxx>
#include <vcl/svapp.hxx>

#include "FPServiceInfo.hxx"

#undef Region

#include <strings.hrc>

using namespace ::com::sun::star;
using namespace ::com::sun::star::ui::dialogs;
using namespace ::com::sun::star::ui::dialogs::TemplateDescription;
using namespace ::com::sun::star::ui::dialogs::ExtendedFilePickerElementIds;
using namespace ::com::sun::star::ui::dialogs::CommonFilePickerElementIds;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::uno;

// helper functions

namespace
{
uno::Sequence<OUString> FilePicker_getSupportedServiceNames()
{
    return { "com.sun.star.ui.dialogs.FilePicker", "com.sun.star.ui.dialogs.SystemFilePicker",
             "com.sun.star.ui.dialogs.Gtk3KDE5FilePicker" };
}
}

// Gtk3KDE5FilePicker

Gtk3KDE5FilePicker::Gtk3KDE5FilePicker(const uno::Reference<uno::XComponentContext>&)
    : Gtk3KDE5FilePicker_Base(_helperMutex)
{
    setMultiSelectionMode(false);

    // tdf#124598 dummy KWidget use to make gtk3_kde5 VCL plugin link against KIO libraries
    QString sDummyStr;
    QUrl aUrl = KFileWidget::getStartUrl(QUrl(), sDummyStr);
    aUrl.setPath("/dev/null");
}

Gtk3KDE5FilePicker::~Gtk3KDE5FilePicker() = default;

void SAL_CALL
Gtk3KDE5FilePicker::addFilePickerListener(const uno::Reference<XFilePickerListener>& xListener)
{
    SolarMutexGuard aGuard;
    m_xListener = xListener;
}

void SAL_CALL
Gtk3KDE5FilePicker::removeFilePickerListener(const uno::Reference<XFilePickerListener>&)
{
    SolarMutexGuard aGuard;
    m_xListener.clear();
}

void SAL_CALL Gtk3KDE5FilePicker::setTitle(const OUString& title)
{
    m_ipc.sendCommand(Commands::SetTitle, title);
}

sal_Int16 SAL_CALL Gtk3KDE5FilePicker::execute()
{
    SolarMutexGuard g;
    return m_ipc.execute();
}

void SAL_CALL Gtk3KDE5FilePicker::setMultiSelectionMode(sal_Bool multiSelect)
{
    m_ipc.sendCommand(Commands::SetMultiSelectionMode, bool(multiSelect));
}

void SAL_CALL Gtk3KDE5FilePicker::setDefaultName(const OUString& name)
{
    m_ipc.sendCommand(Commands::SetDefaultName, name);
}

void SAL_CALL Gtk3KDE5FilePicker::setDisplayDirectory(const OUString& dir)
{
    m_ipc.sendCommand(Commands::SetDisplayDirectory, dir);
}

OUString SAL_CALL Gtk3KDE5FilePicker::getDisplayDirectory()
{
    auto id = m_ipc.sendCommand(Commands::GetDisplayDirectory);
    OUString dir;
    m_ipc.readResponse(id, dir);
    return dir;
}

uno::Sequence<OUString> SAL_CALL Gtk3KDE5FilePicker::getFiles()
{
    uno::Sequence<OUString> seq = getSelectedFiles();
    if (seq.getLength() > 1)
        seq.realloc(1);
    return seq;
}

uno::Sequence<OUString> SAL_CALL Gtk3KDE5FilePicker::getSelectedFiles()
{
    auto id = m_ipc.sendCommand(Commands::GetSelectedFiles);
    uno::Sequence<OUString> seq;
    m_ipc.readResponse(id, seq);
    return seq;
}

void SAL_CALL Gtk3KDE5FilePicker::appendFilter(const OUString& title, const OUString& filter)
{
    m_ipc.sendCommand(Commands::AppendFilter, title, filter);
}

void SAL_CALL Gtk3KDE5FilePicker::setCurrentFilter(const OUString& title)
{
    m_ipc.sendCommand(Commands::SetCurrentFilter, title);
}

OUString SAL_CALL Gtk3KDE5FilePicker::getCurrentFilter()
{
    auto id = m_ipc.sendCommand(Commands::GetCurrentFilter);
    OUString filter;
    m_ipc.readResponse(id, filter);
    return filter;
}

void SAL_CALL Gtk3KDE5FilePicker::appendFilterGroup(const OUString& /*rGroupTitle*/,
                                                    const uno::Sequence<beans::StringPair>& filters)
{
    const sal_uInt16 length = filters.getLength();
    for (sal_uInt16 i = 0; i < length; ++i)
    {
        beans::StringPair aPair = filters[i];
        appendFilter(aPair.First, aPair.Second);
    }
}

void SAL_CALL Gtk3KDE5FilePicker::setValue(sal_Int16 controlId, sal_Int16 nControlAction,
                                           const uno::Any& value)
{
    if (value.has<bool>())
    {
        m_ipc.sendCommand(Commands::SetValue, controlId, nControlAction, value.get<bool>());
    }
    else
    {
        SAL_INFO("vcl.gtkkde5", "set value of unhandled type " << controlId);
    }
}

uno::Any SAL_CALL Gtk3KDE5FilePicker::getValue(sal_Int16 controlId, sal_Int16 nControlAction)
{
    if (CHECKBOX_AUTOEXTENSION == controlId)
        // We ignore this one and rely on QFileDialog to provide the function.
        // Always return false, to pretend we do not support this, otherwise
        // LO core would try to be smart and cut the extension in some places,
        // interfering with QFileDialog's handling of it. QFileDialog also
        // saves the value of the setting, so LO core is not needed for that either.
        return uno::Any(false);

    auto id = m_ipc.sendCommand(Commands::GetValue, controlId, nControlAction);

    bool value = false;
    m_ipc.readResponse(id, value);

    return uno::Any(value);
}

void SAL_CALL Gtk3KDE5FilePicker::enableControl(sal_Int16 controlId, sal_Bool enable)
{
    m_ipc.sendCommand(Commands::EnableControl, controlId, bool(enable));
}

void SAL_CALL Gtk3KDE5FilePicker::setLabel(sal_Int16 controlId, const OUString& label)
{
    m_ipc.sendCommand(Commands::SetLabel, controlId, label);
}

OUString SAL_CALL Gtk3KDE5FilePicker::getLabel(sal_Int16 controlId)
{
    auto id = m_ipc.sendCommand(Commands::GetLabel, controlId);
    OUString label;
    m_ipc.readResponse(id, label);
    return label;
}

void Gtk3KDE5FilePicker::addCustomControl(sal_Int16 controlId)
{
    const char* resId = nullptr;

    switch (controlId)
    {
        case CHECKBOX_AUTOEXTENSION:
            resId = STR_FPICKER_AUTO_EXTENSION;
            break;
        case CHECKBOX_PASSWORD:
            resId = STR_FPICKER_PASSWORD;
            break;
        case CHECKBOX_FILTEROPTIONS:
            resId = STR_FPICKER_FILTER_OPTIONS;
            break;
        case CHECKBOX_READONLY:
            resId = STR_FPICKER_READONLY;
            break;
        case CHECKBOX_LINK:
            resId = STR_FPICKER_INSERT_AS_LINK;
            break;
        case CHECKBOX_PREVIEW:
            resId = STR_FPICKER_SHOW_PREVIEW;
            break;
        case CHECKBOX_SELECTION:
            resId = STR_FPICKER_SELECTION;
            break;
        case CHECKBOX_GPGENCRYPTION:
            resId = STR_FPICKER_GPGENCRYPT;
            break;
        case PUSHBUTTON_PLAY:
            resId = STR_FPICKER_PLAY;
            break;
        case LISTBOX_VERSION:
            resId = STR_FPICKER_VERSION;
            break;
        case LISTBOX_TEMPLATE:
            resId = STR_FPICKER_TEMPLATES;
            break;
        case LISTBOX_IMAGE_TEMPLATE:
            resId = STR_FPICKER_IMAGE_TEMPLATE;
            break;
        case LISTBOX_IMAGE_ANCHOR:
            resId = STR_FPICKER_IMAGE_ANCHOR;
            break;
        case LISTBOX_VERSION_LABEL:
        case LISTBOX_TEMPLATE_LABEL:
        case LISTBOX_IMAGE_TEMPLATE_LABEL:
        case LISTBOX_IMAGE_ANCHOR_LABEL:
        case LISTBOX_FILTER_SELECTOR:
            break;
    }

    switch (controlId)
    {
        case CHECKBOX_AUTOEXTENSION:
        case CHECKBOX_PASSWORD:
        case CHECKBOX_FILTEROPTIONS:
        case CHECKBOX_READONLY:
        case CHECKBOX_LINK:
        case CHECKBOX_PREVIEW:
        case CHECKBOX_SELECTION:
        case CHECKBOX_GPGENCRYPTION:
        {
            // the checkbox is created even for CHECKBOX_AUTOEXTENSION to simplify
            // code, but the checkbox is hidden and ignored
            bool hidden = controlId == CHECKBOX_AUTOEXTENSION;

            m_ipc.sendCommand(Commands::AddCheckBox, controlId, hidden, getResString(resId));

            break;
        }
        case PUSHBUTTON_PLAY:
        case LISTBOX_VERSION:
        case LISTBOX_TEMPLATE:
        case LISTBOX_IMAGE_TEMPLATE:
        case LISTBOX_IMAGE_ANCHOR:
        case LISTBOX_VERSION_LABEL:
        case LISTBOX_TEMPLATE_LABEL:
        case LISTBOX_IMAGE_TEMPLATE_LABEL:
        case LISTBOX_IMAGE_ANCHOR_LABEL:
        case LISTBOX_FILTER_SELECTOR:
            break;
    }
}

void SAL_CALL Gtk3KDE5FilePicker::initialize(const uno::Sequence<uno::Any>& args)
{
    // parameter checking
    uno::Any arg;
    if (args.getLength() == 0)
    {
        throw lang::IllegalArgumentException("no arguments", static_cast<XFilePicker2*>(this), 1);
    }

    arg = args[0];

    if ((arg.getValueType() != cppu::UnoType<sal_Int16>::get())
        && (arg.getValueType() != cppu::UnoType<sal_Int8>::get()))
    {
        throw lang::IllegalArgumentException("invalid argument type",
                                             static_cast<XFilePicker2*>(this), 1);
    }

    sal_Int16 templateId = -1;
    arg >>= templateId;

    bool saveDialog = false;
    switch (templateId)
    {
        case FILEOPEN_SIMPLE:
            break;

        case FILESAVE_SIMPLE:
            saveDialog = true;
            break;

        case FILESAVE_AUTOEXTENSION:
            saveDialog = true;
            addCustomControl(CHECKBOX_AUTOEXTENSION);
            break;

        case FILESAVE_AUTOEXTENSION_PASSWORD:
        {
            saveDialog = true;
            addCustomControl(CHECKBOX_PASSWORD);
            addCustomControl(CHECKBOX_GPGENCRYPTION);
            break;
        }
        case FILESAVE_AUTOEXTENSION_PASSWORD_FILTEROPTIONS:
        {
            saveDialog = true;
            addCustomControl(CHECKBOX_AUTOEXTENSION);
            addCustomControl(CHECKBOX_PASSWORD);
            addCustomControl(CHECKBOX_GPGENCRYPTION);
            addCustomControl(CHECKBOX_FILTEROPTIONS);
            break;
        }
        case FILESAVE_AUTOEXTENSION_SELECTION:
            saveDialog = true;
            addCustomControl(CHECKBOX_AUTOEXTENSION);
            addCustomControl(CHECKBOX_SELECTION);
            break;

        case FILESAVE_AUTOEXTENSION_TEMPLATE:
            saveDialog = true;
            addCustomControl(CHECKBOX_AUTOEXTENSION);
            addCustomControl(LISTBOX_TEMPLATE);
            break;

        case FILEOPEN_LINK_PREVIEW_IMAGE_TEMPLATE:
            addCustomControl(CHECKBOX_LINK);
            addCustomControl(CHECKBOX_PREVIEW);
            addCustomControl(LISTBOX_IMAGE_TEMPLATE);
            break;

        case FILEOPEN_LINK_PREVIEW_IMAGE_ANCHOR:
            addCustomControl(CHECKBOX_LINK);
            addCustomControl(CHECKBOX_PREVIEW);
            addCustomControl(LISTBOX_IMAGE_ANCHOR);
            break;

        case FILEOPEN_PLAY:
            addCustomControl(PUSHBUTTON_PLAY);
            break;

        case FILEOPEN_LINK_PLAY:
            addCustomControl(CHECKBOX_LINK);
            addCustomControl(PUSHBUTTON_PLAY);
            break;

        case FILEOPEN_READONLY_VERSION:
            addCustomControl(CHECKBOX_READONLY);
            addCustomControl(LISTBOX_VERSION);
            break;

        case FILEOPEN_LINK_PREVIEW:
            addCustomControl(CHECKBOX_LINK);
            addCustomControl(CHECKBOX_PREVIEW);
            break;

        case FILEOPEN_PREVIEW:
            addCustomControl(CHECKBOX_PREVIEW);
            break;

        default:
            SAL_INFO("vcl.gtkkde5", "unknown templates " << templateId);
            return;
    }

    setTitle(getResString(saveDialog ? STR_FPICKER_SAVE : STR_FPICKER_OPEN));

    m_ipc.sendCommand(Commands::Initialize, saveDialog);
}

void SAL_CALL Gtk3KDE5FilePicker::cancel()
{
    // TODO
}

void Gtk3KDE5FilePicker::disposing(const lang::EventObject& rEvent)
{
    uno::Reference<XFilePickerListener> xFilePickerListener(rEvent.Source, uno::UNO_QUERY);

    if (xFilePickerListener.is())
    {
        removeFilePickerListener(xFilePickerListener);
    }
}

OUString SAL_CALL Gtk3KDE5FilePicker::getImplementationName() { return FILE_PICKER_IMPL_NAME; }

sal_Bool SAL_CALL Gtk3KDE5FilePicker::supportsService(const OUString& ServiceName)
{
    return cppu::supportsService(this, ServiceName);
}

uno::Sequence<OUString> SAL_CALL Gtk3KDE5FilePicker::getSupportedServiceNames()
{
    return FilePicker_getSupportedServiceNames();
}

void Gtk3KDE5FilePicker::filterChanged()
{
    FilePickerEvent aEvent;
    aEvent.ElementId = LISTBOX_FILTER;
    SAL_INFO("vcl.gtkkde5", "filter changed");
    if (m_xListener.is())
        m_xListener->controlStateChanged(aEvent);
}

void Gtk3KDE5FilePicker::selectionChanged()
{
    FilePickerEvent aEvent;
    SAL_INFO("vcl.gtkkde5", "file selection changed");
    if (m_xListener.is())
        m_xListener->fileSelectionChanged(aEvent);
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */