cxViewImplService.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, 
   this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, 
   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors 
   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
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=========================================================================*/

#include "cxViewImplService.h"

#include <QAction>
#include <ctkPluginContext.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include "cxViewGroup.h"
#include "cxRepManager.h"
#include "cxVisServices.h"
#include "cxSessionStorageServiceProxy.h"
#include "cxXMLNodeWrapper.h"
#include "cxLogger.h"
#include "cxViewGroupData.h"
#include "cxClippers.h"
#include "cxRenderWindowFactory.h"
#include "cxRenderLoop.h"
#include "cxViewImplService.h"
#include "cxSlicePlanes3DRep.h"
#include "cxLayoutRepository.h"
#include "cxCameraControl.h"
#include "cxCameraStyleInteractor.h"
#include "cxSettings.h"
#include "cxPatientModelService.h"
#include "cxSyncedValue.h"
#include "cxInteractiveCropper.h"
#include "cxNavigation.h"
#include "cxViewCollectionWidget.h"
#include "cxViewWrapper.h"
#include "cxViewWrapper2D.h"
#include "cxViewWrapper3D.h"
#include "cxViewWrapperVideo.h"
#include "cxProfile.h"

namespace cx
{

ViewImplService::ViewImplService(ctkPluginContext *context) :
        mContext(context )
{
        mServices = VisServices::create(context);
        mSession = SessionStorageServiceProxy::create(mContext);
        mClippers = ClippersPtr(new Clippers(mServices));

        connect(mSession.get(), &SessionStorageService::sessionChanged, this, &ViewImplService::onSessionChanged);
        connect(mSession.get(), &SessionStorageService::cleared, this, &ViewImplService::onSessionCleared);
        connect(mSession.get(), &SessionStorageService::isLoading, this, &ViewImplService::onSessionLoad);
        connect(mSession.get(), &SessionStorageService::isSaving, this, &ViewImplService::onSessionSave);

        this->init();
}

ViewImplService::~ViewImplService()
{
}

void ViewImplService::init()
{
        mRenderWindowFactory = RenderWindowFactoryPtr(new RenderWindowFactory());

        mRenderLoop.reset(new RenderLoop());
        connect(mRenderLoop.get(), &RenderLoop::preRender, this, &ViewImplService::updateViews);
        connect(mRenderLoop.get(), &RenderLoop::fps, this, &ViewImplService::fps);
        connect(mRenderLoop.get(), &RenderLoop::renderFinished, this, &ViewImplService::renderFinished);

        mSlicePlanesProxy.reset(new SlicePlanesProxy());
        mLayoutRepository.reset(new LayoutRepository());
        mCameraControl.reset(new CameraControl());

        mRenderLoop->setLogging(settings()->value("renderSpeedLogging").toBool());
        mRenderLoop->setSmartRender(settings()->value("smartRender", true).toBool());
        connect(settings(), SIGNAL(valueChangedFor(QString)), this, SLOT(settingsChangedSlot(QString)));

        const unsigned VIEW_GROUP_COUNT = 5; // set this to enough
        // initialize view groups:
        for (unsigned i = 0; i < VIEW_GROUP_COUNT; ++i)
        {
                ViewGroupPtr group(new ViewGroup(mServices, QString::number(i)));
                mViewGroups.push_back(group);
        }

        // moved here from initialize() ... ensures object is fully callable after construction
        mCameraStyleInteractor.reset(new CameraStyleInteractor);

        mActiveLayout = QStringList() << "" << "";
        mLayoutWidgets.resize(mActiveLayout.size(), NULL);

        mInteractiveCropper.reset(new InteractiveCropper(mServices->patient()->getActiveData()));
        connect(this, SIGNAL(activeViewChanged()), this, SLOT(updateCameraStyleActions()));

        this->loadGlobalSettings();
        // connect to layoutrepo after load of global
        connect(mLayoutRepository.get(), &LayoutRepository::layoutChanged, this, &ViewImplService::onLayoutRepositoryChanged);
        this->initializeGlobal2DZoom();
        this->initializeActiveView();

        // set start layout
        this->setActiveLayout("LAYOUT_3D_ACS_SINGLE", 0);

        mRenderLoop->setRenderingInterval(settings()->value("renderingInterval").toInt());
        this->enableRender(true);
}

std::vector<ViewGroupPtr> ViewImplService::getViewGroups()
{
        return mViewGroups;
}

void ViewImplService::enableRender(bool val)
{
        if (val)
                mRenderLoop->start();
        else
                mRenderLoop->stop();

        emit renderingEnabledChanged();
}

bool ViewImplService::renderingIsEnabled() const
{
        return mRenderLoop->isRunning();
}


void ViewImplService::initializeGlobal2DZoom()
{
        mGlobal2DZoomVal = SyncedValue::create(1);

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
                mViewGroups[i]->getData()->initializeGlobal2DZoom(mGlobal2DZoomVal);
}

void ViewImplService::initializeActiveView()
{
        mActiveView = SyncedValue::create("");
        connect(mActiveView.get(), SIGNAL(changed()), this, SIGNAL(activeViewChanged()));

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
                mViewGroups[i]->initializeActiveView(mActiveView);
}


NavigationPtr ViewImplService::getNavigation(int group)
{
        mCameraControl->refreshView(this->get3DView(group));
        return NavigationPtr(new Navigation(mServices, mCameraControl));
}

QWidget *ViewImplService::getLayoutWidget(int index)
{
        if (index >= mLayoutWidgets.size())
                return NULL;
   return mLayoutWidgets[index];
}

QWidget *ViewImplService::createLayoutWidget(QWidget* parent, int index)
{
        if (index >= mLayoutWidgets.size())
                return NULL;

        if (!mLayoutWidgets[index])
        {
                bool optimizedViews = settings()->value("optimizedViews").toBool();

                if (optimizedViews)
                {
                        mLayoutWidgets[index] = ViewCollectionWidget::createOptimizedLayout(mRenderWindowFactory);
                }
                else
                {
                        mLayoutWidgets[index] = ViewCollectionWidget::createViewWidgetLayout(mRenderWindowFactory);
                }

                connect(mLayoutWidgets[index].data(), &QObject::destroyed, this, &ViewImplService::layoutWidgetDestroyed);
                mRenderLoop->addLayout(mLayoutWidgets[index]);

                this->rebuildLayouts();
        }
        return mLayoutWidgets[index];
}

void ViewImplService::layoutWidgetDestroyed(QObject* object)
{
        for (unsigned i=0; i<mLayoutWidgets.size(); ++i)
        {
                if (mLayoutWidgets[i] == object)
                        mLayoutWidgets[i] = NULL;
        }

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                mViewGroups[i]->removeViews();
        }

        this->setActiveView("");
        mSlicePlanesProxy->clearViewports();

        QString uid = this->getActiveLayout();
        mActiveLayout[0] = ""; // hack: force trigger a change
        this->setActiveLayout(uid, 0);
}

void ViewImplService::updateViews()
{
        for(unsigned i=0; i<mViewGroups.size(); ++i)
        {
                ViewGroupPtr group = mViewGroups[i];
                for (unsigned j=0; j<group->getWrappers().size(); ++j)
                        group->getWrappers()[j]->updateView();
        }
}

void ViewImplService::settingsChangedSlot(QString key)
{
        if (key == "smartRender")
        {
                mRenderLoop->setSmartRender(settings()->value("smartRender", true).toBool());
        }
        if (key == "renderingInterval")
        {
                mRenderLoop->setRenderingInterval(settings()->value("renderingInterval").toInt());
        }
        if (key == "renderSpeedLogging")
        {
                mRenderLoop->setLogging(settings()->value("renderSpeedLogging").toBool());
        }
}

InteractiveCropperPtr ViewImplService::getCropper()
{
        return mInteractiveCropper;
}

QString ViewImplService::getActiveLayout(int widgetIndex) const
{
        CX_ASSERT(mActiveLayout.size() > widgetIndex);
        return mActiveLayout[widgetIndex];
}

QString ViewImplService::getActiveView() const
{
        return mActiveView->get().value<QString>();
}

void ViewImplService::setActiveView(QString uid)
{
        mActiveView->set(uid);
}

int ViewImplService::getActiveGroupId() const
{
        int retval = -1;
        QString activeView = mActiveView->value<QString>();

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                ViewWrapperPtr viewWrapper = mViewGroups[i]->getViewWrapperFromViewUid(activeView);
                if (viewWrapper)
                        retval = i;
        }

        return retval;
}

void ViewImplService::addXml(QDomNode& parentNode)
{
        XMLNodeAdder parent(parentNode);
        XMLNodeAdder base(parent.addElement("viewManager"));

        base.addTextToElement("global2DZoom", qstring_cast(mGlobal2DZoomVal->get().toDouble()));

        QDomElement slicePlanes3DNode = base.addElement("slicePlanes3D");
        slicePlanes3DNode.setAttribute("use", mSlicePlanesProxy->getVisible());
        slicePlanes3DNode.setAttribute("opaque", mSlicePlanesProxy->getDrawPlanes());

        XMLNodeAdder viewGroupsNode(base.addElement("viewGroups"));
        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                QDomElement viewGroupNode = viewGroupsNode.addElement("viewGroup");
                viewGroupNode.setAttribute("index", i);
                mViewGroups[i]->addXml(viewGroupNode);
        }
}

void ViewImplService::parseXml(QDomNode viewmanagerNode)
{
        XMLNodeParser base(viewmanagerNode);

        QString clippedImage = base.parseTextFromElement("clippedImage");

        base.parseDoubleFromElementWithDefault("global2DZoom", mGlobal2DZoomVal->get().toDouble());

        QDomElement slicePlanes3DNode = base.parseElement("slicePlanes3D");
        mSlicePlanesProxy->setVisible(slicePlanes3DNode.attribute("use").toInt());
        mSlicePlanesProxy->setDrawPlanes(slicePlanes3DNode.attribute("opaque").toInt());

        QDomElement viewgroups = base.parseElement("viewGroups");
        QDomNode viewgroup = viewgroups.firstChild();
        while (!viewgroup.isNull())
        {
                if (viewgroup.toElement().tagName() != "viewGroup")
                {
                        viewgroup = viewgroup.nextSibling();
                        continue;
                }
                int index = viewgroup.toElement().attribute("index").toInt();

                if (index < 0 || index >= int(mViewGroups.size()))
                {
                        viewgroup = viewgroup.nextSibling();
                        continue;
                }

                mViewGroups[index]->parseXml(viewgroup);

                viewgroup = viewgroup.nextSibling();
        }
}

void ViewImplService::clear()
{
        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                mViewGroups[i]->clearPatientData();
        }
}

ViewPtr ViewImplService::get3DView(int group, int index)
{
        int count = 0;
        std::vector<ViewPtr> views = mViewGroups[group]->getViews();
        for (unsigned i = 0; i < views.size(); ++i)
        {
                if(!views[i])
                        continue;
                if (views[i]->getType()!=View::VIEW_3D)
                        continue;
                if (index == count++)
                        return views[i];
        }
        return ViewPtr();
}


void ViewImplService::deactivateCurrentLayout()
{
        for (unsigned i=0; i<mLayoutWidgets.size(); ++i)
        {
                if (mLayoutWidgets[i])
                        mLayoutWidgets[i]->clearViews();
        }

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                mViewGroups[i]->removeViews();
        }

        this->setActiveView("");
        mSlicePlanesProxy->clearViewports();
}

ViewGroupDataPtr ViewImplService::getGroup(int groupIdx) const
{
        if (( groupIdx>=0 )&&( groupIdx < mViewGroups.size() ))
                return mViewGroups[groupIdx]->getData();
        return ViewGroupDataPtr();
}

unsigned ViewImplService::viewGroupCount() const
{
        int count = 0;
        while(this->getGroup(count))
                ++count;
        return count;
}

void ViewImplService::setActiveLayout(const QString& layout, int widgetIndex)
{
        if(!mLayoutRepository->exists(layout))
                return;

        CX_ASSERT(mActiveLayout.size() > widgetIndex);

        if (mActiveLayout[widgetIndex] == layout)
                return;

        mActiveLayout[widgetIndex] = layout;

        this->rebuildLayouts();

        if (!mViewGroups[0]->getViews().empty())
                this->setActiveView(mViewGroups[0]->getViews()[0]->getUid());

        emit activeLayoutChanged();

        QString layoutName = mLayoutRepository->get(layout).getName();
        report(QString("Layout %1 changed to %2").arg(widgetIndex).arg(layoutName));
}

void ViewImplService::rebuildLayouts()
{
        this->deactivateCurrentLayout();

        for (unsigned i=0; i<mLayoutWidgets.size(); ++i)
        {
                LayoutData next = mLayoutRepository->get(mActiveLayout[i]);
                if (mLayoutWidgets[i] && !next.getUid().isEmpty())
                        this->activateViews(mLayoutWidgets[i], next);
        }

        this->setSlicePlanesProxyInViewsUpTo2DViewgroup();

        mCameraControl->refreshView(this->get3DView());
}

void ViewImplService::setSlicePlanesProxyInViewsUpTo2DViewgroup()
{
        // Set the same proxy in all wrappers, but stop adding after the
        // first group with 2D views are found.
        // This works well _provided_ that the 3D view is in the first group.
        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                bool foundSlice = false;
                std::vector<ViewWrapperPtr> wrappers = mViewGroups[i]->getWrappers();
                for (unsigned j = 0; j < wrappers.size(); ++j)
                {
                        wrappers[j]->setSlicePlanesProxy(mSlicePlanesProxy);
                        foundSlice = foundSlice || wrappers[j]->getView()->getType() == View::VIEW_2D;
                }
                if (foundSlice)
                        break;
        }
}
void ViewImplService::activateViews(ViewCollectionWidget *widget, LayoutData next)
{
        if (!widget)
                return;

        widget->setOffScreenRenderingAndClear(next.getOffScreenRendering());

        for (LayoutData::iterator iter = next.begin(); iter != next.end(); ++iter)
                this->activateView(widget, *iter);
}

void ViewImplService::setRenderingInterval(int interval)
{
        mRenderLoop->setRenderingInterval(interval);
}

void ViewImplService::activateView(ViewCollectionWidget* widget, LayoutViewData viewData)
{
        if (!viewData.isValid())
                return;

        ViewPtr view = widget->addView(viewData.mType, viewData.mRegion);


        vtkRenderWindowInteractorPtr interactor = view->getRenderWindow()->GetInteractor();
        //Turn off rendering in vtkRenderWindowInteractor
        interactor->EnableRenderOff();
        //Increase the StillUpdateRate in the vtkRenderWindowInteractor (default is 0.0001 images per second)
        double rate = settings()->value("stillUpdateRate").value<double>();
        interactor->SetStillUpdateRate(rate);
        // Set the same value when moving (seems counterintuitive, but for us, moving isnt really special.
        // The real challenge is updating while the tracking is active, and this uses the still update rate.
        interactor->SetDesiredUpdateRate(rate);

        ViewWrapperPtr wrapper = this->createViewWrapper(view, viewData);
        if(!mRenderWindowFactory->getSharedOpenGLContext())
                CX_LOG_WARNING() << "ViewImplService::activateView: got not shared OpenGL context";
        mViewGroups[viewData.mGroup]->addView(wrapper, mRenderWindowFactory->getSharedOpenGLContext());
}

ViewWrapperPtr ViewImplService::createViewWrapper(ViewPtr view, LayoutViewData viewData)
{
        if (viewData.mType == View::VIEW_2D)
        {
                ViewWrapper2DPtr wrapper(new ViewWrapper2D(view, mServices));
                wrapper->initializePlane(viewData.mPlane);
                connect(wrapper.get(), &ViewWrapper2D::pointSampled, this, &ViewImplService::pointSampled);
                return wrapper;
        }
        else if (viewData.mType == View::VIEW_3D)
        {

                ViewWrapper3DPtr wrapper(new ViewWrapper3D(viewData.mGroup + 1, view, mServices));
                if (viewData.mGroup == 0)
                        mInteractiveCropper->setView(view);
                return wrapper;
        }
        else if (viewData.mType == View::VIEW_REAL_TIME)
        {
                ViewWrapperVideoPtr wrapper(new ViewWrapperVideo(view, mServices));
                return wrapper;
        }
        else
        {
                reportError(QString("Unknown view type %1").arg(qstring_cast(viewData.mType)));
        }

        return ViewWrapperPtr();
}

LayoutRepositoryPtr ViewImplService::getLayoutRepository()
{
        return mLayoutRepository;
}

void ViewImplService::onLayoutRepositoryChanged(QString uid)
{
        this->saveGlobalSettings();

        bool activeChange = mActiveLayout[0] == uid;
        if (activeChange)
        {
                mActiveLayout[0] = ""; // hack: force trigger a change
                this->setActiveLayout(uid, 0);
        }
}

void ViewImplService::loadGlobalSettings()
{
        XmlOptionFile file = profile()->getXmlSettings().descend("viewmanager");
        mLayoutRepository->load(file);
}

void ViewImplService::saveGlobalSettings()
{
        XmlOptionFile file = profile()->getXmlSettings().descend("viewmanager");
        mLayoutRepository->save(file);
        file.save();
}

QActionGroup* ViewImplService::getInteractorStyleActionGroup()
{
        return mCameraStyleInteractor->getInteractorStyleActionGroup();
}

void ViewImplService::updateCameraStyleActions()
{
        int active = this->getActiveGroupId();
        int index = this->findGroupContaining3DViewGivenGuess(active);

        if (index<0)
        {
                mCameraStyleInteractor->connectCameraStyle(ViewGroupDataPtr());
        }
        else
        {
                ViewGroupPtr group = this->getViewGroups()[index];
                mCameraStyleInteractor->connectCameraStyle(group->getData());
                mCameraControl->setView(this->get3DView(index, 0));
        }
}

int ViewImplService::findGroupContaining3DViewGivenGuess(int preferredGroup)
{
        if (preferredGroup>=0)
                if (mViewGroups[preferredGroup]->contains3DView())
                        return preferredGroup;

        for (unsigned i=0; i<mViewGroups.size(); ++i)
                if (mViewGroups[i]->contains3DView())
                        return i;
        return -1;
}

void ViewImplService::autoShowData(DataPtr data)
{
        if (settings()->value("Automation/autoShowNewData").toBool() && data)
        {
                this->autoShowInViewGroups(data);
                this->autoResetCameraToSuperiorView();
                this->autoCenterToImageCenter();
        }
}

CameraControlPtr ViewImplService::getCameraControl() { return mCameraControl; }

void ViewImplService::autoShowInViewGroups(DataPtr data)
{
        QList<unsigned> showInViewGroups = this->getViewGroupsToAutoShowIn();
        foreach (unsigned i, showInViewGroups)
                this->getViewGroups()[i]->getData()->addDataSorted(data->getUid());
}

QList<unsigned> ViewImplService::getViewGroupsToAutoShowIn()
{
        QList<unsigned> showInViewGroups;
        if(settings()->value("Automation/autoShowNewDataInViewGroup0").toBool())
                showInViewGroups  << 0;
        if(settings()->value("Automation/autoShowNewDataInViewGroup1").toBool())
                showInViewGroups  << 1;
        if(settings()->value("Automation/autoShowNewDataInViewGroup2").toBool())
                showInViewGroups  << 2;
        if(settings()->value("Automation/autoShowNewDataInViewGroup3").toBool())
                showInViewGroups  << 3;
        if(settings()->value("Automation/autoShowNewDataInViewGroup4").toBool())
                showInViewGroups  << 4;
        return showInViewGroups;
}

void ViewImplService::autoResetCameraToSuperiorView()
{
        if(settings()->value("Automation/autoResetCameraToSuperiorViewWhenAutoShowingNewData").toBool())
        {
                for (unsigned i=0; i<mViewGroups.size(); ++i)
                        if (mViewGroups[i]->contains3DView())
                        {
                                mCameraControl->setView(this->get3DView(i));
                                mCameraControl->setSuperiorView();
                        }
        }
}

void ViewImplService::autoCenterToImageCenter()
{
        if(settings()->value("Automation/autoCenterToImageCenterViewWhenAutoShowingNewData").toBool())
        {
                QList<unsigned> showInViewGroups = this->getViewGroupsToAutoShowIn();

                foreach (unsigned i, showInViewGroups)
                        this->centerToImageCenterInViewGroup(i);
        }
}

void ViewImplService::centerToImageCenterInViewGroup(unsigned groupNr)
{
        this->getNavigation(groupNr)->centerToDataInViewGroup(this->getGroup(groupNr));
}

CyclicActionLoggerPtr ViewImplService::getRenderTimer()
{
        return mRenderLoop->getRenderTimer();
}

void ViewImplService::setCameraStyle(CAMERA_STYLE_TYPE style, int groupIdx)
{
        //Set active view before changing camerastyle
        if (!mViewGroups[groupIdx]->getViews().empty())
                this->setActiveView(mViewGroups[groupIdx]->getViews()[0]->getUid());

        QList<QAction*> actions = this->getInteractorStyleActionGroup()->actions();
        for(int i = 0; i < actions.size(); ++i)
        {
                if (actions[i]->data().toString() == enum2string(style))
                        actions[i]->trigger();
        }
}

void ViewImplService::zoomCamera3D(int viewGroup3DNumber, int zoomFactor)
{
        ViewGroupDataPtr viewGroup3D = this->getGroup(viewGroup3DNumber);
        if(!viewGroup3D)
                return;

        viewGroup3D->zoomCamera3D(zoomFactor);
}

void ViewImplService::addDefaultLayout(LayoutData layoutData)
{
        mLayoutRepository->addDefault(layoutData);
}

void ViewImplService::enableContextMenuForViews(bool enable)
{
        for(int i=0; i<mLayoutWidgets.size(); ++i)
        {
                ViewCollectionWidget* widget = mLayoutWidgets[i];
                if(widget)
                        widget->enableContextMenuForViews(enable);
        }
}

void ViewImplService::setRegistrationMode(REGISTRATION_STATUS mode)
{
        this->getGroup(0)->setRegistrationMode(mode);
}

bool ViewImplService::isNull()
{
        return false;
}

void ViewImplService::aboutToStop()
{
        this->enableRender(false);
}

ClippersPtr ViewImplService::getClippers()
{
        return this->mClippers;
}

void ViewImplService::centerToImageCenterInActiveViewGroup()
{
        this->centerToImageCenterInViewGroup(this->getActiveGroupId());
}

void ViewImplService::onSessionChanged()
{
}
void ViewImplService::onSessionCleared()
{
        this->clear();
}

//TODO: save/load clippers
void ViewImplService::onSessionLoad(QDomElement& node)
{
        XMLNodeParser root(node);
        QDomElement viewManagerNode = root.descend("managers/viewManager").node().toElement();
        if (!viewManagerNode.isNull())
                this->parseXml(viewManagerNode);

        mClippers->parseXml(node);
}
void ViewImplService::onSessionSave(QDomElement& node)
{
        XMLNodeAdder root(node);
        QDomElement managerNode = root.descend("managers").node().toElement();
        this->addXml(managerNode);
        mClippers->addXml(node);
}

} /* namespace cx */