/* -*- 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/.

 *

 */

#pragma once

#include <DevelopmentToolDockingWindow.hxx>

#include <com/sun/star/frame/XController.hpp>

#include <com/sun/star/view/XSelectionSupplier.hpp>

#include <comphelper/compbase.hxx>

#include <utility>

typedef comphelper::WeakComponentImplHelper<css::view::XSelectionChangeListener>

    SelectionChangeHandlerInterfaceBase;

/** Selection change handler to listen to document selection changes.

 *

 * Listens to the changes and notifies the docking window with a new

 * selected object, when a change happens.

 */

class SelectionChangeHandler final : public SelectionChangeHandlerInterfaceBase

{

private:

    css::uno::Reference<css::frame::XController> mxController;

    VclPtr<DevelopmentToolDockingWindow> mpDockingWindow;

public:

    SelectionChangeHandler(css::uno::Reference<css::frame::XController> xController,

                           DevelopmentToolDockingWindow* pDockingWindow)

        : mxController(std::move(xController))

        , mpDockingWindow(pDockingWindow)

    {

        css::uno::Reference<css::view::XSelectionSupplier> xSupplier(mxController,

                                                                     css::uno::UNO_QUERY);

        xSupplier->addSelectionChangeListener(this);

    }

    ~SelectionChangeHandler() { mpDockingWindow.disposeAndClear(); }

    virtual void SAL_CALL selectionChanged(const css::lang::EventObject& /*rEvent*/) override

    {

        css::uno::Reference<css::view::XSelectionSupplier> xSupplier(mxController,

                                                                     css::uno::UNO_QUERY);

        if (xSupplier.is())

        {

            css::uno::Any aAny = xSupplier->getSelection();

            auto xInterface = aAny.get<css::uno::Reference<css::uno::XInterface>>();

            mpDockingWindow->selectionChanged(xInterface);

        }

    }

    void stopListening()

    {

        css::uno::Reference<css::view::XSelectionSupplier> xSupplier(mxController,

                                                                     css::uno::UNO_QUERY);

        xSupplier->removeSelectionChangeListener(this);

    }

    virtual void SAL_CALL disposing(const css::lang::EventObject& /*rEvent*/) override {}

    using comphelper::WeakComponentImplHelperBase::disposing;

private:

    SelectionChangeHandler(const SelectionChangeHandler&) = delete;

    SelectionChangeHandler& operator=(const SelectionChangeHandler&) = delete;

};

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