/* -*- 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 .

 */

#pragma once

#include <svtools/svtdllapi.h>

#include <com/sun/star/lang/XServiceInfo.hpp>

#include <com/sun/star/lang/XInitialization.hpp>

#include <com/sun/star/ui/dialogs/XExecutableDialog.hpp>

#include <cppuhelper/implbase.hxx>

#include <comphelper/uno3.hxx>

#include <comphelper/propertycontainer.hxx>

#include <comphelper/broadcasthelper.hxx>

namespace com::sun::star::awt { class XWindow; }

namespace com::sun::star::uno { class XComponentContext; }

namespace weld { class DialogController; }

namespace svt

{

#define     UNODIALOG_PROPERTY_ID_TITLE     1

#define     UNODIALOG_PROPERTY_ID_PARENT    2

inline constexpr OUString UNODIALOG_PROPERTY_TITLE = u"Title"_ustr;

inline constexpr OUString UNODIALOG_PROPERTY_PARENT = u"ParentWindow"_ustr;

    typedef cppu::WeakImplHelper< css::ui::dialogs::XExecutableDialog,

                                  css::lang::XServiceInfo,

                                  css::lang::XInitialization > OGenericUnoDialogBase;

    /** abstract base class for implementing UNO objects representing dialogs (com.sun.star.awt::XDialog)

    */

    class SVT_DLLPUBLIC OGenericUnoDialog

            :public OGenericUnoDialogBase

            ,public ::comphelper::OMutexAndBroadcastHelper

            ,public ::comphelper::OPropertyContainer

    {

    protected:

        std::unique_ptr<weld::DialogController> m_xDialog;      /// the dialog to execute

        bool                        m_bExecuting : 1;           /// we're currently executing the dialog

        bool                        m_bTitleAmbiguous : 1;      /// m_sTitle has not been set yet

        bool                        m_bInitialized : 1;         /// has "initialize" been called?

        // <properties>

        OUString                                         m_sTitle;   /// title of the dialog

        css::uno::Reference<css::awt::XWindow>           m_xParent;  /// parent window

        // </properties>

        css::uno::Reference<css::uno::XComponentContext> m_aContext;

    protected:

        OGenericUnoDialog(const css::uno::Reference< css::uno::XComponentContext >& _rxContext);

        virtual ~OGenericUnoDialog() override;

    public:

        // UNO

        DECLARE_UNO3_DEFAULTS(OGenericUnoDialog, OGenericUnoDialogBase)

        virtual css::uno::Any SAL_CALL queryInterface(const css::uno::Type& _rType) override;

        // XTypeProvider

        virtual css::uno::Sequence<css::uno::Type> SAL_CALL getTypes(  ) override;

        virtual css::uno::Sequence<sal_Int8> SAL_CALL getImplementationId(  ) override = 0;

        // XServiceInfo

        virtual OUString SAL_CALL getImplementationName() override = 0;

        virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;

        virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override = 0;

        // OPropertySetHelper

        virtual void SAL_CALL setFastPropertyValue_NoBroadcast( sal_Int32 nHandle, const css::uno::Any& rValue ) override;

        virtual sal_Bool SAL_CALL convertFastPropertyValue( css::uno::Any& rConvertedValue, css::uno::Any& rOldValue, sal_Int32 nHandle, const css::uno::Any& rValue) override;

        // XExecutableDialog

        virtual void SAL_CALL setTitle( const OUString& aTitle ) override;

        virtual sal_Int16 SAL_CALL execute(  ) override;

        // XInitialization

        virtual void SAL_CALL initialize( const css::uno::Sequence< css::uno::Any >& aArguments ) override;

    protected:

        /** create the concrete dialog instance. Note that m_aMutex is not locked when this method get called,

            but the application-wide solar mutex is (to guard the not thread-safe ctor of the dialog).

            @param      pParent     the parent window for the new dialog

        */

        virtual std::unique_ptr<weld::DialogController> createDialog(const css::uno::Reference<css::awt::XWindow>& rParent) = 0;

        /// called to destroy the dialog used. deletes m_pDialog and resets it to NULL

        void destroyDialog();

        /** called after the dialog has been executed

            @param      _nExecutionResult       the execution result as returned by Dialog::Execute

        */

        virtual void executedDialog(sal_Int16 /*_nExecutionResult*/) { }

        /** smaller form of <method>initialize</method>.<p/>

            The <method>initialize</method> method is called with a sequence of com.sun.star.uno::Any's,

            which is split up into the single elements, which are passed to implInitialize. The default implementation

            tries to extract a com.sun.star.beans::PropertyValue from the value a pass it to the

            com.sun.star.beans::XPropertySet interface of the object.

        */

        virtual void implInitialize(const css::uno::Any& _rValue);

    private:

        /** ensures that m_pDialog is not <NULL/>

            This method does nothing if m_pDialog is already non-<NULL/>. Else, it calls createDialog and does

            all necessary initializations of the new dialog instance.

            @precond

                m_aMutex is locked

            @return

                <TRUE/> if and only if m_pDialog is non-<NULL/> upon returning from the method. Note that the only

                case where m_pDialog is <NULL/> is when createDialog returned <NULL/>, which is will fire an assertion

                in non-product builds.

        */

        bool    impl_ensureDialog_lck();

    };

    /// helper class for guarding access to methods of an OGenericUnoDialog

    class UnoDialogEntryGuard

    {

    public:

        UnoDialogEntryGuard( OGenericUnoDialog& _rDialog )

            :m_aGuard( _rDialog.GetMutex() )

        {

        }

    private:

        ::osl::MutexGuard   m_aGuard;

    };

}   // namespace svt

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