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/* -*- 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 <com/sun/star/awt/XKeyListener.hpp>
#include <com/sun/star/awt/XPaintListener.hpp>
#include <com/sun/star/awt/XMouseMotionListener.hpp>
#include <com/sun/star/awt/XWindow.hpp>
#include <com/sun/star/awt/XWindowListener.hpp>
#include <com/sun/star/awt/XMouseListener.hpp>
#include <com/sun/star/awt/XFocusListener.hpp>
#include <comphelper/compbase.hxx>
#include <comphelper/interfacecontainer4.hxx>
#include <cppuhelper/weakref.hxx>
#include <type_traits>
namespace unocontrols {
template <class Listener> extern int Add; // dummy
template <class Listener> extern int Remove; // dummy
template <> constexpr inline auto Add<css::awt::XFocusListener> = &css::awt::XWindow::addFocusListener;
template <> constexpr inline auto Remove<css::awt::XFocusListener> = &css::awt::XWindow::removeFocusListener;
template <> constexpr inline auto Add<css::awt::XWindowListener> = &css::awt::XWindow::addWindowListener;
template <> constexpr inline auto Remove<css::awt::XWindowListener> = &css::awt::XWindow::removeWindowListener;
template <> constexpr inline auto Add<css::awt::XKeyListener> = &css::awt::XWindow::addKeyListener;
template <> constexpr inline auto Remove<css::awt::XKeyListener> = &css::awt::XWindow::removeKeyListener;
template <> constexpr inline auto Add<css::awt::XMouseListener> = &css::awt::XWindow::addMouseListener;
template <> constexpr inline auto Remove<css::awt::XMouseListener> = &css::awt::XWindow::removeMouseListener;
template <> constexpr inline auto Add<css::awt::XMouseMotionListener> = &css::awt::XWindow::addMouseMotionListener;
template <> constexpr inline auto Remove<css::awt::XMouseMotionListener> = &css::awt::XWindow::removeMouseMotionListener;
template <> constexpr inline auto Add<css::awt::XPaintListener> = &css::awt::XWindow::addPaintListener;
template <> constexpr inline auto Remove<css::awt::XPaintListener> = &css::awt::XWindow::removePaintListener;
template <class Ifc> class Listeners
{
protected:
comphelper::OInterfaceContainerHelper4<Ifc> list;
};
template <class... Ifc>
class ContainersHolder : public comphelper::WeakImplHelper<Ifc...>, public Listeners<Ifc>...
{
protected:
template <typename F> void for_each_container(F f) { (..., f(Listeners<Ifc>::list)); }
template <class Ifc1>
void notifyPeer(const css::uno::Reference<css::awt::XWindow>& peer,
void (SAL_CALL css::awt::XWindow::*func)(const css::uno::Reference<Ifc1>&))
{
if (peer)
(peer.get()->*func)(this);
}
template <class Ifc1>
void add(std::unique_lock<std::mutex>& guard, const css::uno::Reference<Ifc1>& listener,
const css::uno::Reference<css::awt::XWindow>& peer)
{
assert(listener);
if (Listeners<Ifc1>::list.addInterface(guard, listener) == 1)
{
// the first listener is added
notifyPeer(peer, Add<Ifc1>);
}
}
template <class Ifc1>
void remove(std::unique_lock<std::mutex>& guard, const css::uno::Reference<Ifc1>& listener,
const css::uno::Reference<css::awt::XWindow>& peer)
{
if (Listeners<Ifc1>::list.removeInterface(guard, listener) == 0)
{
// the last listener is removed
notifyPeer(peer, Remove<Ifc1>);
}
}
};
class OMRCListenerMultiplexerHelper final : public ContainersHolder< css::awt::XFocusListener
, css::awt::XWindowListener
, css::awt::XKeyListener
, css::awt::XMouseListener
, css::awt::XMouseMotionListener
, css::awt::XPaintListener >
{
public:
/**
@short constructor
@descr Create a Multiplexer of XWindowEvents.
@param rControl The control. All listeners think that this is the original broadcaster.
@param rPeer The peer from which the original events are dispatched. Null is allowed.
*/
OMRCListenerMultiplexerHelper( const css::uno::Reference< css::awt::XWindow >& xControl ,
const css::uno::Reference< css::awt::XWindow >& xPeer );
virtual ~OMRCListenerMultiplexerHelper() override;
OMRCListenerMultiplexerHelper& operator= ( const OMRCListenerMultiplexerHelper& aCopyInstance );
// container methods
/**
@short Remove all listeners from the previous set peer and add the needed listeners to rPeer.
@param rPeer The peer from which the original events are dispatched. Null is allowed.
*/
void setPeer( const css::uno::Reference< css::awt::XWindow >& xPeer );
/**
@short Remove all listeners and send a disposing message.
*/
void disposeAndClear();
/**
@short Add the specified listener to the source.
*/
template <class Interface> void advise(const css::uno::Reference<Interface>& xListener)
{
std::unique_lock aGuard(m_aMutex);
add(aGuard, xListener, m_xPeer);
}
/**
@short Remove the specified listener from the source.
*/
template <class Interface> void unadvise(const css::uno::Reference<Interface>& xListener)
{
std::unique_lock aGuard(m_aMutex);
remove(aGuard, xListener, m_xPeer);
}
// XEventListener
virtual void SAL_CALL disposing(const css::lang::EventObject& aSource) override;
// XFocusListener
virtual void SAL_CALL focusGained(const css::awt::FocusEvent& aEvent ) override;
virtual void SAL_CALL focusLost(const css::awt::FocusEvent& aEvent ) override;
// XWindowListener
virtual void SAL_CALL windowResized(const css::awt::WindowEvent& aEvent ) override;
virtual void SAL_CALL windowMoved(const css::awt::WindowEvent& aEvent ) override;
virtual void SAL_CALL windowShown(const css::lang::EventObject& aEvent ) override;
virtual void SAL_CALL windowHidden(const css::lang::EventObject& aEvent ) override;
// XKeyListener
virtual void SAL_CALL keyPressed( const css::awt::KeyEvent& aEvent ) override;
virtual void SAL_CALL keyReleased( const css::awt::KeyEvent& aEvent ) override;
// XMouseListener
virtual void SAL_CALL mousePressed(const css::awt::MouseEvent& aEvent ) override;
virtual void SAL_CALL mouseReleased(const css::awt::MouseEvent& aEvent ) override;
virtual void SAL_CALL mouseEntered(const css::awt::MouseEvent& aEvent ) override;
virtual void SAL_CALL mouseExited(const css::awt::MouseEvent& aEvent ) override;
// XMouseMotionListener
virtual void SAL_CALL mouseDragged(const css::awt::MouseEvent& aEvent ) override;
virtual void SAL_CALL mouseMoved(const css::awt::MouseEvent& aEvent ) override;
// XPaintListener
virtual void SAL_CALL windowPaint(const css::awt::PaintEvent& aEvent ) override;
private:
template <class Interface, typename Event>
void Multiplex(void (SAL_CALL Interface::*method)(const Event&), const Event& event);
// private variables
private:
css::uno::Reference< css::awt::XWindow > m_xPeer; /// The source of the events. Normally this is the peer object.
css::uno::WeakReference< css::awt::XWindow > m_xControl;
};
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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