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Diffstat (limited to 'unoxml/source/events/eventdispatcher.cxx')
| -rw-r--r-- | unoxml/source/events/eventdispatcher.cxx | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/unoxml/source/events/eventdispatcher.cxx b/unoxml/source/events/eventdispatcher.cxx new file mode 100644 index 000000000..ef07dff5a --- /dev/null +++ b/unoxml/source/events/eventdispatcher.cxx @@ -0,0 +1,250 @@ +/* -*- 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: */ |