dcd7be141f
Change-Id: Ib4c1464d709c41f019d1910000e71075c9f5e037 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176310 Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com> Tested-by: Jenkins
220 lines
8.2 KiB
C++
220 lines
8.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <com/sun/star/awt/XKeyListener.hpp>
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#include <com/sun/star/awt/XPaintListener.hpp>
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#include <com/sun/star/awt/XMouseMotionListener.hpp>
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#include <com/sun/star/awt/XWindow.hpp>
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#include <com/sun/star/awt/XWindowListener.hpp>
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#include <com/sun/star/awt/XMouseListener.hpp>
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#include <com/sun/star/awt/XFocusListener.hpp>
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#include <comphelper/compbase.hxx>
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#include <comphelper/interfacecontainer4.hxx>
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#include <cppuhelper/weakref.hxx>
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#include <type_traits>
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namespace unocontrols {
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template <class Listener> extern int Add; // dummy
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template <class Listener> extern int Remove; // dummy
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template <> constexpr inline auto Add<css::awt::XFocusListener> = &css::awt::XWindow::addFocusListener;
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template <> constexpr inline auto Remove<css::awt::XFocusListener> = &css::awt::XWindow::removeFocusListener;
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template <> constexpr inline auto Add<css::awt::XWindowListener> = &css::awt::XWindow::addWindowListener;
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template <> constexpr inline auto Remove<css::awt::XWindowListener> = &css::awt::XWindow::removeWindowListener;
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template <> constexpr inline auto Add<css::awt::XKeyListener> = &css::awt::XWindow::addKeyListener;
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template <> constexpr inline auto Remove<css::awt::XKeyListener> = &css::awt::XWindow::removeKeyListener;
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template <> constexpr inline auto Add<css::awt::XMouseListener> = &css::awt::XWindow::addMouseListener;
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template <> constexpr inline auto Remove<css::awt::XMouseListener> = &css::awt::XWindow::removeMouseListener;
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template <> constexpr inline auto Add<css::awt::XMouseMotionListener> = &css::awt::XWindow::addMouseMotionListener;
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template <> constexpr inline auto Remove<css::awt::XMouseMotionListener> = &css::awt::XWindow::removeMouseMotionListener;
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template <> constexpr inline auto Add<css::awt::XPaintListener> = &css::awt::XWindow::addPaintListener;
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template <> constexpr inline auto Remove<css::awt::XPaintListener> = &css::awt::XWindow::removePaintListener;
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template <class Ifc> class Listeners
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{
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protected:
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comphelper::OInterfaceContainerHelper4<Ifc> list;
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};
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template <class... Ifc>
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class ContainersHolder : public comphelper::WeakImplHelper<Ifc...>, public Listeners<Ifc>...
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{
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protected:
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template <typename F> void for_each_container(F f) { (..., f(Listeners<Ifc>::list)); }
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template <class Ifc1>
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void notifyPeer(const css::uno::Reference<css::awt::XWindow>& peer,
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void (SAL_CALL css::awt::XWindow::*func)(const css::uno::Reference<Ifc1>&))
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{
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if (peer)
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(peer.get()->*func)(this);
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}
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template <class Ifc1>
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void add(std::unique_lock<std::mutex>& guard, const css::uno::Reference<Ifc1>& listener,
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const css::uno::Reference<css::awt::XWindow>& peer)
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{
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assert(listener);
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if (Listeners<Ifc1>::list.addInterface(guard, listener) == 1)
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{
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// the first listener is added
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notifyPeer(peer, Add<Ifc1>);
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}
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}
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template <class Ifc1>
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void remove(std::unique_lock<std::mutex>& guard, const css::uno::Reference<Ifc1>& listener,
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const css::uno::Reference<css::awt::XWindow>& peer)
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{
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if (Listeners<Ifc1>::list.removeInterface(guard, listener) == 0)
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{
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// the last listener is removed
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notifyPeer(peer, Remove<Ifc1>);
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}
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}
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};
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class OMRCListenerMultiplexerHelper final : public ContainersHolder< css::awt::XFocusListener
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, css::awt::XWindowListener
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, css::awt::XKeyListener
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, css::awt::XMouseListener
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, css::awt::XMouseMotionListener
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, css::awt::XPaintListener >
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{
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public:
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/**
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@short constructor
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@descr Create a Multiplexer of XWindowEvents.
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@param rControl The control. All listeners think that this is the original broadcaster.
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@param rPeer The peer from which the original events are dispatched. Null is allowed.
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*/
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OMRCListenerMultiplexerHelper( const css::uno::Reference< css::awt::XWindow >& xControl ,
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const css::uno::Reference< css::awt::XWindow >& xPeer );
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virtual ~OMRCListenerMultiplexerHelper() override;
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OMRCListenerMultiplexerHelper& operator= ( const OMRCListenerMultiplexerHelper& aCopyInstance );
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// container methods
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/**
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@short Remove all listeners from the previous set peer and add the needed listeners to rPeer.
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@param rPeer The peer from which the original events are dispatched. Null is allowed.
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*/
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void setPeer( const css::uno::Reference< css::awt::XWindow >& xPeer );
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/**
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@short Remove all listeners and send a disposing message.
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*/
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void disposeAndClear();
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/**
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@short Add the specified listener to the source.
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*/
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template <class Interface> void advise(const css::uno::Reference<Interface>& xListener)
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{
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std::unique_lock aGuard(m_aMutex);
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add(aGuard, xListener, m_xPeer);
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}
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/**
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@short Remove the specified listener from the source.
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*/
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template <class Interface> void unadvise(const css::uno::Reference<Interface>& xListener)
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{
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std::unique_lock aGuard(m_aMutex);
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remove(aGuard, xListener, m_xPeer);
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}
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// XEventListener
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virtual void SAL_CALL disposing(const css::lang::EventObject& aSource) override;
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// XFocusListener
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virtual void SAL_CALL focusGained(const css::awt::FocusEvent& aEvent ) override;
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virtual void SAL_CALL focusLost(const css::awt::FocusEvent& aEvent ) override;
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// XWindowListener
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virtual void SAL_CALL windowResized(const css::awt::WindowEvent& aEvent ) override;
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virtual void SAL_CALL windowMoved(const css::awt::WindowEvent& aEvent ) override;
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virtual void SAL_CALL windowShown(const css::lang::EventObject& aEvent ) override;
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virtual void SAL_CALL windowHidden(const css::lang::EventObject& aEvent ) override;
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// XKeyListener
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virtual void SAL_CALL keyPressed( const css::awt::KeyEvent& aEvent ) override;
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virtual void SAL_CALL keyReleased( const css::awt::KeyEvent& aEvent ) override;
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// XMouseListener
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virtual void SAL_CALL mousePressed(const css::awt::MouseEvent& aEvent ) override;
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virtual void SAL_CALL mouseReleased(const css::awt::MouseEvent& aEvent ) override;
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virtual void SAL_CALL mouseEntered(const css::awt::MouseEvent& aEvent ) override;
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virtual void SAL_CALL mouseExited(const css::awt::MouseEvent& aEvent ) override;
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// XMouseMotionListener
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virtual void SAL_CALL mouseDragged(const css::awt::MouseEvent& aEvent ) override;
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virtual void SAL_CALL mouseMoved(const css::awt::MouseEvent& aEvent ) override;
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// XPaintListener
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virtual void SAL_CALL windowPaint(const css::awt::PaintEvent& aEvent ) override;
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private:
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template <class Interface, typename Event>
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void Multiplex(void (SAL_CALL Interface::*method)(const Event&), const Event& event);
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// private variables
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private:
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css::uno::Reference< css::awt::XWindow > m_xPeer; /// The source of the events. Normally this is the peer object.
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css::uno::WeakReference< css::awt::XWindow > m_xControl;
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};
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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