/* -*- 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 <memory>

#include <comphelper/lok.hxx>

#include <comphelper/processfactory.hxx>

#include <utility>

#include <vcl/taskpanelist.hxx>

#include <vcl/svapp.hxx>

#include <framestatuslistener.hxx>

#include <svtools/toolbarmenu.hxx>

using namespace ::com::sun::star::uno;

using namespace ::com::sun::star::lang;

using namespace ::com::sun::star::frame;

namespace {

SystemWindow* GetTopMostParentSystemWindow(const vcl::Window& rWindow)

{

    // ->manually search topmost system window

    // required because their might be another system window between this and the top window

    vcl::Window* pWindow = rWindow.GetParent();

    SystemWindow* pTopMostSysWin = nullptr;

    while ( pWindow )

    {

        if ( pWindow->IsSystemWindow() )

            pTopMostSysWin = static_cast<SystemWindow*>(pWindow);

        pWindow = pWindow->GetParent();

    }

    return pTopMostSysWin;

}

class ToolbarPopupStatusListener : public svt::FrameStatusListener

{

public:

    ToolbarPopupStatusListener( const css::uno::Reference< css::frame::XFrame >& xFrame,

                                WeldToolbarPopup& rToolbarPopup );

    virtual void SAL_CALL dispose() override;

    virtual void SAL_CALL statusChanged( const css::frame::FeatureStateEvent& Event ) override;

    WeldToolbarPopup* mpPopup;

};

ToolbarPopupStatusListener::ToolbarPopupStatusListener(

    const css::uno::Reference< css::frame::XFrame >& xFrame,

    WeldToolbarPopup& rToolbarPopup )

: svt::FrameStatusListener( ::comphelper::getProcessComponentContext(), xFrame )

, mpPopup( &rToolbarPopup )

{

}

void SAL_CALL ToolbarPopupStatusListener::dispose()

{

    mpPopup = nullptr;

    svt::FrameStatusListener::dispose();

}

void SAL_CALL ToolbarPopupStatusListener::statusChanged( const css::frame::FeatureStateEvent& Event )

{

    if( mpPopup )

        mpPopup->statusChanged( Event );

}

}

void WeldToolbarPopup::AddStatusListener(const OUString& rCommandURL)

{

    if (!m_xStatusListener.is())

        m_xStatusListener.set(new ToolbarPopupStatusListener(m_xFrame, *this));

    m_xStatusListener->addStatusListener(rCommandURL);

}

void WeldToolbarPopup::statusChanged(const css::frame::FeatureStateEvent& /*Event*/)

{

}

void InterimToolbarPopup::EndPopupMode()

{

    GetDockingManager()->EndPopupMode(this);

}

WeldToolbarPopup::WeldToolbarPopup(css::uno::Reference<css::frame::XFrame> xFrame,

                                   weld::Widget* pParent, const OUString& rUIFile,

                                   const OUString& rId)

    : m_xBuilder(Application::CreateBuilder(pParent, rUIFile))

    , m_xTopLevel(m_xBuilder->weld_popover(rId))

    , m_xContainer(m_xBuilder->weld_container(u"container"_ustr))

    , m_xFrame(std::move(xFrame))

{

    m_xTopLevel->connect_focus_in(LINK(this, WeldToolbarPopup, FocusHdl));

}

WeldToolbarPopup::~WeldToolbarPopup()

{

    if (m_xStatusListener.is())

        m_xStatusListener->dispose();

}

IMPL_LINK_NOARG(WeldToolbarPopup, FocusHdl, weld::Widget&, void)

{

    GrabFocus();

}

ToolbarPopupContainer::ToolbarPopupContainer(weld::Widget* pParent)

    : m_xBuilder(Application::CreateBuilder(pParent, u"svx/ui/toolbarpopover.ui"_ustr))

    , m_xTopLevel(m_xBuilder->weld_container(u"ToolbarPopover"_ustr))

    , m_xContainer(m_xBuilder->weld_container(u"container"_ustr))

{

    m_xTopLevel->connect_focus_in(LINK(this, ToolbarPopupContainer, FocusHdl));

}

void ToolbarPopupContainer::setPopover(std::unique_ptr<WeldToolbarPopup> xPopup)

{

    m_xPopup = std::move(xPopup);

    // move the WeldToolbarPopup contents into this toolbar so on-demand contents can appear inside a preexisting gtk popover

    // because the arrow for the popover is only enabled if there's a popover set

    m_xPopup->getTopLevel()->move(m_xPopup->getContainer(), m_xContainer.get());

    // in online LoseFocus event is fired due to this line and popup is closed

    // when first time opened any popup from not focused sidebar

    if (!comphelper::LibreOfficeKit::isActive())

        m_xPopup->GrabFocus();

}

void ToolbarPopupContainer::unsetPopover()

{

    if (!m_xPopup)

        return;

    m_xContainer->move(m_xPopup->getContainer(), m_xPopup->getTopLevel());

    m_xPopup.reset();

}

ToolbarPopupContainer::~ToolbarPopupContainer()

{

    unsetPopover();

}

IMPL_LINK_NOARG(ToolbarPopupContainer, FocusHdl, weld::Widget&, void)

{

    if (m_xPopup)

        m_xPopup->GrabFocus();

}

InterimToolbarPopup::InterimToolbarPopup(const css::uno::Reference<css::frame::XFrame>& rFrame, vcl::Window* pParent,

                                         std::unique_ptr<WeldToolbarPopup> xPopup, bool bTearable)

    : DropdownDockingWindow(pParent, rFrame, bTearable)

    , m_xFrame(rFrame)

    , m_xBuilder(Application::CreateInterimBuilder(m_xBox.get(), u"svt/ui/interimparent.ui"_ustr, false))

    , m_xContainer(m_xBuilder->weld_container(u"container"_ustr))

    , m_xPopup(std::move(xPopup))

{

    if (SystemWindow* pWindow = GetTopMostParentSystemWindow(*this))

        pWindow->GetTaskPaneList()->AddWindow(this);

    // move the WeldToolbarPopup contents into this interim toolbar so welded contents can appear as a dropdown in an unwelded toolbar

    m_xPopup->getTopLevel()->move(m_xPopup->getContainer(), m_xContainer.get());

}

Unexecuted instantiation: InterimToolbarPopup::InterimToolbarPopup(com::sun::star::uno::Reference<com::sun::star::frame::XFrame> const&, vcl::Window*, std::__1::unique_ptr<WeldToolbarPopup, std::__1::default_delete<WeldToolbarPopup> >, bool)

Unexecuted instantiation: InterimToolbarPopup::InterimToolbarPopup(com::sun::star::uno::Reference<com::sun::star::frame::XFrame> const&, vcl::Window*, std::__1::unique_ptr<WeldToolbarPopup, std::__1::default_delete<WeldToolbarPopup> >, bool)

void InterimToolbarPopup::GetFocus()

{

    DropdownDockingWindow::GetFocus();

    if (!m_xPopup)

        return;

    m_xPopup->GrabFocus();

}

void InterimToolbarPopup::dispose()

{

    if (SystemWindow* pWindow = GetTopMostParentSystemWindow(*this))

        pWindow->GetTaskPaneList()->RemoveWindow(this);

    // if we have focus when disposed, pick the document window as destination

    // for focus rather than let it go to an arbitrary windows

    if (HasFocus())

    {

        if (auto xWindow = m_xFrame->getContainerWindow())

            xWindow->setFocus();

    }

    // move the contents back where it belongs

    m_xContainer->move(m_xPopup->getContainer(), m_xPopup->getTopLevel());

    m_xPopup.reset();

    m_xContainer.reset();

    m_xBuilder.reset();

    m_xFrame.clear();

    DropdownDockingWindow::dispose();

}

InterimToolbarPopup::~InterimToolbarPopup()

{

    disposeOnce();

}

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