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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 .
*/
#include <eventdispatcher.hxx>
#include <event.hxx>
#include <mutationevent.hxx>
#include <uievent.hxx>
#include <mouseevent.hxx>
#include "../dom/document.hxx"
#include <osl/mutex.hxx>
using namespace css::uno;
using namespace css::xml::dom;
using namespace css::xml::dom::events;
namespace DOM::events {
void CEventDispatcher::addListener(xmlNodePtr pNode, const OUString& aType, const Reference<XEventListener>& aListener, bool bCapture)
{
TypeListenerMap *const pTMap = bCapture
? (& m_CaptureListeners) : (& m_TargetListeners);
// get the multimap for the specified type
ListenerMap *pMap = nullptr;
auto tIter = pTMap->find(aType);
if (tIter == pTMap->end()) {
// the map has to be created
auto const pair = pTMap->emplace(aType, ListenerMap());
pMap = & pair.first->second;
} else {
pMap = & tIter->second;
}
assert(pMap != nullptr);
pMap->emplace(pNode, aListener);
}
void CEventDispatcher::removeListener(xmlNodePtr pNode, const OUString& aType, const Reference<XEventListener>& aListener, bool bCapture)
{
TypeListenerMap *const pTMap = bCapture
? (& m_CaptureListeners) : (& m_TargetListeners);
// get the multimap for the specified type
auto tIter = pTMap->find(aType);
if (tIter != pTMap->end()) {
ListenerMap & rMap = tIter->second;
// find listeners of specified type for specified node
ListenerMap::iterator iter = rMap.find(pNode);
while (iter != rMap.end() && iter->first == pNode)
{
// erase all references to specified listener
if (iter->second.is() && iter->second == aListener)
{
iter = rMap.erase(iter);
}
else
++iter;
}
}
}
CEventDispatcher::~CEventDispatcher()
{
}
void CEventDispatcher::callListeners(
TypeListenerMap const& rTMap,
xmlNodePtr const pNode,
const OUString& aType, Reference< XEvent > const& xEvent)
{
// get the multimap for the specified type
TypeListenerMap::const_iterator tIter = rTMap.find(aType);
if (tIter != rTMap.end()) {
ListenerMap const& rMap = tIter->second;
auto iterRange = rMap.equal_range(pNode);
for( auto iter = iterRange.first; iter != iterRange.second; ++iter )
{
if(iter->second.is())
(iter->second)->handleEvent(xEvent);
}
}
}
void CEventDispatcher::dispatchEvent(
DOM::CDocument & rDocument, ::osl::Mutex & rMutex,
xmlNodePtr const pNode, Reference<XNode> const& xNode,
Reference< XEvent > const& i_xEvent) const
{
TypeListenerMap captureListeners;
TypeListenerMap targetListeners;
{
::osl::MutexGuard g(rMutex);
captureListeners = m_CaptureListeners;
targetListeners = m_TargetListeners;
}
if (captureListeners.empty() && targetListeners.empty())
return;
CEvent *pEvent = nullptr; // pointer to internal event representation
OUString const aType = i_xEvent->getType();
if (aType == "DOMSubtreeModified" ||
aType == "DOMNodeInserted" ||
aType == "DOMNodeRemoved" ||
aType == "DOMNodeRemovedFromDocument" ||
aType == "DOMNodeInsertedIntoDocument" ||
aType == "DOMAttrModified" ||
aType == "DOMCharacterDataModified" )
{
Reference< XMutationEvent > const aMEvent(i_xEvent,
UNO_QUERY_THROW);
// dispatch a mutation event
// we need to clone the event in order to have complete control
// over the implementation
CMutationEvent* pMEvent = new CMutationEvent;
pMEvent->initMutationEvent(
aType, aMEvent->getBubbles(), aMEvent->getCancelable(),
aMEvent->getRelatedNode(), aMEvent->getPrevValue(),
aMEvent->getNewValue(), aMEvent->getAttrName(),
aMEvent->getAttrChange());
pEvent = pMEvent;
} else if ( // UIEvent
aType == "DOMFocusIn" ||
aType == "DOMFocusOut" ||
aType == "DOMActivate" )
{
Reference< XUIEvent > const aUIEvent(i_xEvent, UNO_QUERY_THROW);
CUIEvent* pUIEvent = new CUIEvent;
pUIEvent->initUIEvent(aType,
aUIEvent->getBubbles(), aUIEvent->getCancelable(),
aUIEvent->getView(), aUIEvent->getDetail());
pEvent = pUIEvent;
} else if ( // MouseEvent
aType == "click" ||
aType == "mousedown" ||
aType == "mouseup" ||
aType == "mouseover" ||
aType == "mousemove" ||
aType == "mouseout" )
{
Reference< XMouseEvent > const aMouseEvent(i_xEvent,
UNO_QUERY_THROW);
CMouseEvent *pMouseEvent = new CMouseEvent;
pMouseEvent->initMouseEvent(aType,
aMouseEvent->getBubbles(), aMouseEvent->getCancelable(),
aMouseEvent->getView(), aMouseEvent->getDetail(),
aMouseEvent->getScreenX(), aMouseEvent->getScreenY(),
aMouseEvent->getClientX(), aMouseEvent->getClientY(),
aMouseEvent->getCtrlKey(), aMouseEvent->getAltKey(),
aMouseEvent->getShiftKey(), aMouseEvent->getMetaKey(),
aMouseEvent->getButton(), aMouseEvent->getRelatedTarget());
pEvent = pMouseEvent;
}
else // generic event
{
pEvent = new CEvent;
pEvent->initEvent(
aType, i_xEvent->getBubbles(), i_xEvent->getCancelable());
}
pEvent->m_target.set(xNode, UNO_QUERY_THROW);
pEvent->m_currentTarget = i_xEvent->getCurrentTarget();
pEvent->m_time = i_xEvent->getTimeStamp();
// create the reference to the private event implementation
// that will be dispatched to the listeners
Reference< XEvent > const xEvent(pEvent);
// build the path from target node to the root
typedef std::vector< ::std::pair<Reference<XEventTarget>, xmlNodePtr> >
NodeVector_t;
NodeVector_t captureVector;
{
::osl::MutexGuard g(rMutex);
xmlNodePtr cur = pNode;
while (cur != nullptr)
{
Reference< XEventTarget > const xRef(
rDocument.GetCNode(cur).get());
captureVector.emplace_back(xRef, cur);
cur = cur->parent;
}
}
// the capture vector now holds the node path from target to root
// first we must search for capture listeners in order root to
// to target. after that, any target listeners have to be called
// then bubbeling phase listeners are called in target to root
// order
// start at the root
NodeVector_t::const_reverse_iterator rinode =
const_cast<NodeVector_t const&>(captureVector).rbegin();
if (rinode != const_cast<NodeVector_t const&>(captureVector).rend())
{
// capturing phase:
pEvent->m_phase = PhaseType_CAPTURING_PHASE;
while (rinode !=
const_cast<NodeVector_t const&>(captureVector).rend())
{
pEvent->m_currentTarget = rinode->first;
callListeners(captureListeners, rinode->second, aType, xEvent);
if (pEvent->m_canceled) return;
++rinode;
}
NodeVector_t::const_iterator inode = captureVector.begin();
// target phase
pEvent->m_phase = PhaseType_AT_TARGET;
pEvent->m_currentTarget = inode->first;
callListeners(targetListeners, inode->second, aType, xEvent);
if (pEvent->m_canceled) return;
// bubbeling phase
++inode;
if (i_xEvent->getBubbles()) {
pEvent->m_phase = PhaseType_BUBBLING_PHASE;
while (inode != captureVector.end())
{
pEvent->m_currentTarget = inode->first;
callListeners(targetListeners,
inode->second, aType, xEvent);
if (pEvent->m_canceled) return;
++inode;
}
}
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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