OpenBoard/src/gui/UBTeacherGuideWidget.cpp

/*
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <QDebug>
#include <QLabel>
#include <QVBoxLayout>
#include <QHeaderView>
#include <QTreeWidget>
#include <QPushButton>
#include <QDomDocument>

#include "UBTeacherGuideWidget.h"

#include "adaptors/UBSvgSubsetAdaptor.h"

#include "core/UBApplication.h"
#include "core/UBPersistenceManager.h"
#include "core/UBSettings.h"

#include "globals/UBGlobals.h"

#include "board/UBBoardController.h"
#include "board/UBBoardView.h"
#include "board/UBBoardPaletteManager.h"

#include "gui/UBStylusPalette.h"
#include "gui/UBActionPalette.h"

#include "web/UBWebController.h"

#include "document/UBDocumentProxy.h"
#include "document/UBDocumentController.h"

#include "domain/UBGraphicsTextItem.h"

#include "core/memcheck.h"

#define UBTG_SEPARATOR_FIXED_HEIGHT 3

typedef enum {
    eUBTGAddSubItemWidgetType_None,
    eUBTGAddSubItemWidgetType_Action,
    eUBTGAddSubItemWidgetType_Media,
    eUBTGAddSubItemWidgetType_Url
} eUBTGAddSubItemWidgetType;

/***************************************************************************
 *               class    UBTeacherGuideEditionWidget                      *
 ***************************************************************************/

UBTeacherGuideEditionWidget::UBTeacherGuideEditionWidget(QWidget *parent, const char* name) :
    QWidget(parent)
  , mpLayout(NULL)
  , mpDocumentTitle(NULL)
  , mpPageNumberLabel(NULL)
  , mpPageTitle(NULL)
  , mpComment(NULL)
  , mpSeparator(NULL)
  , mpTreeWidget(NULL)
  , mpRootWidgetItem(NULL)
  , mpAddAnActionItem(NULL)
  , mpAddAMediaItem(NULL)
  , mpAddALinkItem(NULL)
{
    setObjectName(name);

    mpLayout = new QVBoxLayout(this);
    mpPageNumberLabel = new QLabel(this);
    mpPageNumberLabel->setAlignment(Qt::AlignRight);
    mpPageNumberLabel->setObjectName("UBTGPageNumberLabel");
    mpLayout->addWidget(mpPageNumberLabel);
    // tree basic configuration

    if (UBSettings::settings()->teacherGuidePageZeroActivated->get().toBool()) {
        mpDocumentTitle = new QLabel(this);
        mpDocumentTitle->setObjectName("UBTGPresentationDocumentTitle");
        mpLayout->addWidget(mpDocumentTitle);
    }

    mpPageTitle = new UBTGAdaptableText(0, this);
    mpPageTitle->setObjectName("UBTGEditionPageTitle");
    mpPageTitle->setPlaceHolderText(tr("Type title here ..."));
    mpLayout->addWidget(mpPageTitle);

    mpComment = new UBTGAdaptableText(0, this);
    mpComment->setObjectName("UBTGEditionComment");
    mpComment->setPlaceHolderText(tr("Type comment here ..."));
    mpLayout->addWidget(mpComment);

    mpSeparator = new QFrame(this);
    mpSeparator->setObjectName("UBTGSeparator");
    mpSeparator->setFixedHeight(UBTG_SEPARATOR_FIXED_HEIGHT);
    mpLayout->addWidget(mpSeparator);

    mpTreeWidget = new QTreeWidget(this);
    mpTreeWidget->setStyleSheet("selection-background-color:transparent; padding-bottom:5px; padding-top:5px;");
    mpLayout->addWidget(mpTreeWidget);

    mpRootWidgetItem = mpTreeWidget->invisibleRootItem();
    mpTreeWidget->setRootIsDecorated(false);
    mpTreeWidget->setIndentation(0);
    mpTreeWidget->setDropIndicatorShown(false);
    mpTreeWidget->header()->close();
    mpTreeWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    mpTreeWidget->setColumnCount(2);
    mpTreeWidget->header()->setStretchLastSection(false);
    mpTreeWidget->header()->setResizeMode(0, QHeaderView::Stretch);
    mpTreeWidget->header()->setResizeMode(1, QHeaderView::Fixed);
    mpTreeWidget->header()->setDefaultSectionSize(18);
    mpTreeWidget->setSelectionMode(QAbstractItemView::NoSelection);

    connect(mpTreeWidget, SIGNAL(itemClicked(QTreeWidgetItem*,int)), this, SLOT(onAddItemClicked(QTreeWidgetItem*,int)));
    connect(UBApplication::boardController, SIGNAL(activeSceneChanged()), this, SLOT(onActiveSceneChanged()));

    mpAddAnActionItem = new UBAddItem(tr("Add an action"), eUBTGAddSubItemWidgetType_Action, mpTreeWidget);
    mpAddAMediaItem = new UBAddItem(tr("Add a media"), eUBTGAddSubItemWidgetType_Media, mpTreeWidget);
    mpAddALinkItem = new UBAddItem(tr("Add a link"), eUBTGAddSubItemWidgetType_Url, mpTreeWidget);

    mpRootWidgetItem->addChild(mpAddAnActionItem);
    mpRootWidgetItem->addChild(mpAddAMediaItem);
    mpRootWidgetItem->addChild(mpAddALinkItem);

    if (UBSettings::settings()->teacherGuideLessonPagesActivated->get().toBool()) {
        UBSvgSubsetAdaptor::addElementToBeStored(QString("teacherGuide"), this);
        connect(UBApplication::boardController, SIGNAL(documentSet(UBDocumentProxy*)), this, SLOT(onActiveDocumentChanged()));
    }
}

UBTeacherGuideEditionWidget::~UBTeacherGuideEditionWidget()
{
    DELETEPTR(mpDocumentTitle);
    DELETEPTR(mpPageNumberLabel);
    DELETEPTR(mpPageTitle);
    DELETEPTR(mpComment);
    DELETEPTR(mpSeparator);
    DELETEPTR(mpAddAnActionItem);
    DELETEPTR(mpAddAMediaItem);
    DELETEPTR(mpAddALinkItem);
    DELETEPTR(mpTreeWidget);
    DELETEPTR(mpLayout);
}

void UBTeacherGuideEditionWidget::showEvent(QShowEvent* event)
{
    setFocus();
    QWidget::showEvent(event);
}

void UBTeacherGuideEditionWidget::onActiveDocumentChanged()
{
    int activeSceneIndex = UBApplication::boardController->activeSceneIndex();
    if (UBApplication::boardController->pageFromSceneIndex(activeSceneIndex) != 0)
        load(UBSvgSubsetAdaptor::readTeacherGuideNode(activeSceneIndex));
}

void UBTeacherGuideEditionWidget::load(QString element)
{
    cleanData();
    QDomDocument doc("TeacherGuide");
    doc.setContent(element);

    for (QDomElement element = doc.documentElement().firstChildElement();
         !element.isNull(); element = element.nextSiblingElement()) {
        QString tagName = element.tagName();
        if (tagName == "title")
            mpPageTitle->setInitialText(element.attribute("value"));
        else if (tagName == "comment")
            mpComment->setInitialText(element.attribute("value"));
        else if (tagName == "media")
            onAddItemClicked(mpAddAMediaItem, 0, &element);
        else if (tagName == "link")
            onAddItemClicked(mpAddALinkItem, 0, &element);
        else if (tagName == "action")
            onAddItemClicked(mpAddAnActionItem, 0, &element);
    }
}

QVector<tIDataStorage*> UBTeacherGuideEditionWidget::save(int pageIndex)
{
    QVector<tIDataStorage*> result;
    if (pageIndex != UBApplication::boardController->currentPage())
        return result;
    tIDataStorage* data = new tIDataStorage();
    data->name = "teacherGuide";
    data->type = eElementType_START;
    data->attributes.insert("version", "2.00");
    result << data;

    data = new tIDataStorage();
    data->name = "title";
    data->type = eElementType_UNIQUE;
    data->attributes.insert("value", mpPageTitle->text());
    if (mpPageTitle->text().length())
        result << data;

    data = new tIDataStorage();
    data->name = "comment";
    data->type = eElementType_UNIQUE;
    data->attributes.insert("value", mpComment->text());
    if (mpComment->text().length())
        result << data;

    QList<QTreeWidgetItem*> children = getChildrenList(mpAddAnActionItem);
    children << getChildrenList(mpAddAMediaItem);
    children << getChildrenList(mpAddALinkItem);

    foreach(QTreeWidgetItem* widgetItem, children) {
        tUBGEElementNode* node = dynamic_cast<iUBTGSaveData*>(mpTreeWidget->itemWidget( widgetItem, 0))->saveData();
        if (node) {
            data = new tIDataStorage();
            data->name = node->name;
            data->type = eElementType_UNIQUE;
            foreach(QString currentKey, node->attributes.keys())
                data->attributes.insert(currentKey, node->attributes.value(currentKey));
            result << data;
        }
    }

    data = new tIDataStorage();
    data->name = "teacherGuide";
    data->type = eElementType_END;
    result << data;
    return result;
}

void UBTeacherGuideEditionWidget::onActiveSceneChanged()
{
    int currentPage = UBApplication::boardController->currentPage();
    if (currentPage > 0) {
        cleanData();
        load( UBSvgSubsetAdaptor::readTeacherGuideNode( UBApplication::boardController->activeSceneIndex()));
        mpPageNumberLabel->setText(tr("Page: %0").arg(currentPage));
        UBDocumentProxy* documentProxy = UBApplication::boardController->selectedDocument();
        if (mpDocumentTitle)
            mpDocumentTitle->setText(documentProxy->metaData(UBSettings::sessionTitle).toString());
    }
}

void UBTeacherGuideEditionWidget::cleanData()
{
    mpPageTitle->setText("");
    mpComment->setText("");
    QList<QTreeWidgetItem*> children = mpAddAnActionItem->takeChildren();
    children << mpAddAMediaItem->takeChildren();
    children << mpAddALinkItem->takeChildren();

    foreach(QTreeWidgetItem* item, children) {
        DELETEPTR(item);
    }
}

QList<QTreeWidgetItem*> UBTeacherGuideEditionWidget::getChildrenList( QTreeWidgetItem* widgetItem)
{
    QList<QTreeWidgetItem*> result;
    for (int i = 0; i < widgetItem->childCount(); i += 1)
        result << widgetItem->child(i);
    return result;
}

QVector<tUBGEElementNode*> UBTeacherGuideEditionWidget::getPageAndCommentData()
{
    QVector<tUBGEElementNode*> result;
    tUBGEElementNode* pageTitle = new tUBGEElementNode();
    pageTitle->name = "pageTitle";
    pageTitle->attributes.insert("value", mpPageTitle->text());
    result << pageTitle;

    tUBGEElementNode* comment = new tUBGEElementNode();
    comment->name = "comment";
    comment->attributes.insert("value", mpComment->text());
    result << comment;
    return result;
}

QVector<tUBGEElementNode*> UBTeacherGuideEditionWidget::getData()
{
    QVector<tUBGEElementNode*> result;
    QList<QTreeWidgetItem*> children = getChildrenList(mpAddAnActionItem);
    children << getChildrenList(mpAddAMediaItem);
    children << getChildrenList(mpAddALinkItem);
    result << getPageAndCommentData();
    foreach(QTreeWidgetItem* widgetItem, children) {
        tUBGEElementNode* node = dynamic_cast<iUBTGSaveData*>(mpTreeWidget->itemWidget( widgetItem, 0))->saveData();
        if (node)
            result << node;
    }
    return result;
}

void UBTeacherGuideEditionWidget::onAddItemClicked(QTreeWidgetItem* widget, int column, QDomElement *element)
{
    int addSubItemWidgetType = widget->data(column, Qt::UserRole).toInt();
    if (addSubItemWidgetType != eUBTGAddSubItemWidgetType_None) {
        QTreeWidgetItem* newWidgetItem = new QTreeWidgetItem(widget);
        newWidgetItem->setData(column, Qt::UserRole, eUBTGAddSubItemWidgetType_None);
        newWidgetItem->setData(1, Qt::UserRole, eUBTGAddSubItemWidgetType_None);
        newWidgetItem->setIcon(1, QIcon(":images/close.svg"));

        switch (addSubItemWidgetType) {
        case eUBTGAddSubItemWidgetType_Action: {
            UBTGActionWidget* actionWidget = new UBTGActionWidget(widget);
            if (element)
                actionWidget->initializeWithDom(*element);
            mpTreeWidget->setItemWidget(newWidgetItem, 0, actionWidget);
            break;
        }
        case eUBTGAddSubItemWidgetType_Media: {
            UBTGMediaWidget* mediaWidget = new UBTGMediaWidget(widget);
            if (element)
                mediaWidget->initializeWithDom(*element);
            mpTreeWidget->setItemWidget(newWidgetItem, 0, mediaWidget);
            break;
        }
        case eUBTGAddSubItemWidgetType_Url: {
            UBTGUrlWidget* urlWidget = new UBTGUrlWidget();
            if (element)
                urlWidget->initializeWithDom(*element);
            mpTreeWidget->setItemWidget(newWidgetItem, 0, urlWidget);
            break;
        }
        default:
            delete newWidgetItem;
            qCritical() << "onAddItemClicked no action set";
            return;
        }

        if (addSubItemWidgetType != eUBTGAddSubItemWidgetType_None && !widget->isExpanded())
            widget->setExpanded(true);
        else {
            //to update the tree and subtrees
            widget->setExpanded(false);
            widget->setExpanded(true);
        }
    }
    else if (column == 1 && addSubItemWidgetType == eUBTGAddSubItemWidgetType_None) {
        UBTGMediaWidget* media = dynamic_cast<UBTGMediaWidget*>(mpTreeWidget->itemWidget(widget, 0));
        if (media)
            media->removeSource();
        int index = mpTreeWidget->currentIndex().row();
        QTreeWidgetItem* toBeDeletedWidgetItem = widget->parent()->takeChild(index);
        delete toBeDeletedWidgetItem;
    }
}

bool UBTeacherGuideEditionWidget::isModified()
{
    bool result = false;
    result |= mpPageTitle->text().length() > 0;
    result |= mpComment->text().length() > 0;
    result |= mpAddAnActionItem->childCount() > 0;
    result |= mpAddAMediaItem->childCount() > 0;
    result |= mpAddALinkItem->childCount() > 0;
    return result;
}

/***************************************************************************
 *           class    UBTeacherGuidePresentationWidget                     *
 ***************************************************************************/
typedef enum {
    tUBTGActionAssociateOnClickItem_NONE,
    tUBTGActionAssociateOnClickItem_URL,
    tUBTGActionAssociateOnClickItem_MEDIA,
    tUBTGActionAssociateOnClickItem_EXPAND
} tUBTGActionAssociateOnClickItem;

typedef enum {
    tUBTGTreeWidgetItemRole_HasAnAction = Qt::UserRole,
    tUBTGTreeWidgetItemRole_HasAnUrl
} tUBTGTreeWidgetItemRole;

UBTeacherGuidePresentationWidget::UBTeacherGuidePresentationWidget(QWidget *parent, const char *name) :
    QWidget(parent)
  , mpPageTitle(NULL)
  , mpComment(NULL)
  , mpLayout(NULL)
  , mpButtonTitleLayout(NULL)
  , mpDocumentTitle(NULL)
  , mpPageNumberLabel(NULL)
  , mpSeparator(NULL)
  , mpModePushButton(NULL)
  , mpTreeWidget(NULL)
  , mpRootWidgetItem(NULL)
  , mpMediaSwitchItem(NULL)
{
    setObjectName(name);

    mpLayout = new QVBoxLayout(this);

    mpPageNumberLabel = new QLabel(this);
    mpPageNumberLabel->setAlignment(Qt::AlignRight);
    mpPageNumberLabel->setObjectName("UBTGPageNumberLabel");

    mpLayout->addWidget(mpPageNumberLabel);

    mpButtonTitleLayout = new QHBoxLayout(0);

    mpModePushButton = new QPushButton(this);
    mpModePushButton->setIcon(QIcon(":images/pencil.svg"));
    mpModePushButton->setMaximumWidth(32);
    mpModePushButton->installEventFilter(this);

    connect(mpModePushButton, SIGNAL(clicked()), parentWidget(), SLOT(changeMode()));
    mpButtonTitleLayout->addWidget(mpModePushButton);

    if (UBSettings::settings()->teacherGuidePageZeroActivated->get().toBool()) {
        mpDocumentTitle = new QLabel(this);
        mpDocumentTitle->setObjectName("UBTGPresentationDocumentTitle");
        mpButtonTitleLayout->addWidget(mpDocumentTitle);
    }

    mpLayout->addLayout(mpButtonTitleLayout);

    mpPageTitle = new UBTGAdaptableText(0, this);
    mpPageTitle->setObjectName("UBTGPresentationPageTitle");
    mpPageTitle->setReadOnly(true);
    mpPageTitle->setStyleSheet("background-color:transparent");
    mpLayout->addWidget(mpPageTitle);

    mpComment = new UBTGAdaptableText(0, this);
    mpComment->setObjectName("UBTGPresentationComment");
    mpComment->setReadOnly(true);
    mpComment->setStyleSheet("background-color:transparent");
    mpLayout->addWidget(mpComment);

    mpSeparator = new QFrame(this);
    mpSeparator->setFixedHeight(UBTG_SEPARATOR_FIXED_HEIGHT);
    mpSeparator->setObjectName("UBTGSepartor");
    mpLayout->addWidget(mpSeparator);

    mpTreeWidget = new UBTGDraggableTreeItem(this);
    mpLayout->addWidget(mpTreeWidget);

    mpRootWidgetItem = mpTreeWidget->invisibleRootItem();
    mpTreeWidget->setSelectionMode(QAbstractItemView::NoSelection);
    mpTreeWidget->setDragEnabled(true);
    mpTreeWidget->setRootIsDecorated(false);
    mpTreeWidget->setIndentation(0);
    mpTreeWidget->setDropIndicatorShown(false);
    mpTreeWidget->header()->close();
    mpTreeWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    mpTreeWidget->setStyleSheet("selection-background-color:transparent; padding-bottom:5px; padding-top:5px; ");
    connect(mpTreeWidget, SIGNAL(itemClicked(QTreeWidgetItem*,int)), this, SLOT(onAddItemClicked(QTreeWidgetItem*,int)));
    connect(UBApplication::boardController, SIGNAL(activeSceneChanged()), this, SLOT(onActiveSceneChanged()));
}

UBTeacherGuidePresentationWidget::~UBTeacherGuidePresentationWidget()
{
    DELETEPTR(mpComment);
    DELETEPTR(mpPageTitle);
    DELETEPTR(mpPageNumberLabel);
    DELETEPTR(mpSeparator);
    DELETEPTR(mpMediaSwitchItem);
    DELETEPTR(mpModePushButton);
    DELETEPTR(mpDocumentTitle);
    DELETEPTR(mpButtonTitleLayout);
    DELETEPTR(mpTreeWidget);
    DELETEPTR(mpLayout);
}

bool UBTeacherGuidePresentationWidget::eventFilter(QObject* object, QEvent* event)
{
    Q_UNUSED(object);
    if (event->type() == QEvent::HoverEnter || event->type() == QEvent::HoverMove || event->type() == QEvent::HoverLeave)
        return true;
    return false;
}

void UBTeacherGuidePresentationWidget::cleanData()
{
    mpPageTitle->showText("");
    mpComment->showText("");
    //tree clean
    QList<QTreeWidgetItem*> itemToRemove = mpRootWidgetItem->takeChildren();
    foreach(QTreeWidgetItem* eachItem, itemToRemove) {
        DELETEPTR(eachItem);
    }
    // the mpMediaSwitchItem is deleted by the previous loop but the pointer is not set to zero
    mpMediaSwitchItem = NULL;
}

void UBTeacherGuidePresentationWidget::onActiveSceneChanged()
{
    cleanData();
    mpPageNumberLabel->setText(tr("Page: %0").arg(UBApplication::boardController->currentPage()));
    UBDocumentProxy* documentProxy = UBApplication::boardController->selectedDocument();
    if (mpDocumentTitle)
        mpDocumentTitle->setText( documentProxy->metaData(UBSettings::sessionTitle).toString());
}

void UBTeacherGuidePresentationWidget::createMediaButtonItem()
{
    if (!mpMediaSwitchItem) {
        mpMediaSwitchItem = new QTreeWidgetItem(mpRootWidgetItem);
        mpMediaSwitchItem->setText(0, "+");
        mpMediaSwitchItem->setExpanded(false);
        mpMediaSwitchItem->setData(0, tUBTGTreeWidgetItemRole_HasAnAction, tUBTGActionAssociateOnClickItem_EXPAND);
        mpMediaSwitchItem->setData(0, Qt::BackgroundRole, QVariant(QColor(200, 200, 200)));
        mpMediaSwitchItem->setData(0, Qt::FontRole, QVariant(QFont(QApplication::font().family(), 16)));
        mpMediaSwitchItem->setData(0, Qt::TextAlignmentRole, QVariant(Qt::AlignCenter));
        mpRootWidgetItem->addChild(mpMediaSwitchItem);
    }
}

void UBTeacherGuidePresentationWidget::showData( QVector<tUBGEElementNode*> data)
{
    cleanData();

    foreach(tUBGEElementNode* element, data) {
        if (element->name == "pageTitle")
            mpPageTitle->showText(element->attributes.value("value"));
        else if (element->name == "comment")
            mpComment->showText(element->attributes.value("value"));
        else if (element->name == "action") {
            QTreeWidgetItem* newWidgetItem = new QTreeWidgetItem( mpRootWidgetItem);
            newWidgetItem->setText(0, element->attributes.value("task"));
            newWidgetItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
            QString colorString = element->attributes.value("owner").toInt() == 0 ? "red" : "green";
            UBTGAdaptableText* textWidget = new UBTGAdaptableText(newWidgetItem, 0);
            textWidget->bottomMargin(14);
            textWidget->setStyleSheet( "QWidget {background: #EEEEEE; border:none; color:" + colorString + ";}");
            textWidget->showText(element->attributes.value("task"));
            textWidget->document()->setDefaultFont( QFont(QApplication::font().family(), 11));
            mpTreeWidget->setItemWidget(newWidgetItem, 0, textWidget);

            mpRootWidgetItem->addChild(newWidgetItem);
        }
        else if (element->name == "media") {
            createMediaButtonItem();
            QTreeWidgetItem* newWidgetItem = new QTreeWidgetItem( mpMediaSwitchItem);
            newWidgetItem->setIcon(0, QIcon( ":images/teacherGuide/" + element->attributes.value("mediaType") + ".png"));
            newWidgetItem->setText(0, element->attributes.value("title"));
            newWidgetItem->setData(0, tUBTGTreeWidgetItemRole_HasAnAction, tUBTGActionAssociateOnClickItem_MEDIA);
            newWidgetItem->setData(0, Qt::FontRole, QVariant(QFont(QApplication::font().family(), 11)));
            QString mimeTypeString;
#ifdef Q_WS_WIN
            mimeTypeString = QUrl::fromLocalFile(UBApplication::boardController->selectedDocument()->persistencePath()+ "/" + element->attributes.value("relativePath")).toString();
#else
            mimeTypeString = UBApplication::boardController->selectedDocument()->persistencePath() + "/" + element->attributes.value("relativePath");
#endif
            newWidgetItem->setData(0, TG_USER_ROLE_MIME_TYPE, mimeTypeString);
            newWidgetItem->setFlags( Qt::ItemIsDragEnabled | Qt::ItemIsEnabled | Qt::ItemIsSelectable);
            mpRootWidgetItem->addChild(newWidgetItem);

            QTreeWidgetItem* mediaItem = new QTreeWidgetItem(newWidgetItem);
            mediaItem->setData(0, tUBTGTreeWidgetItemRole_HasAnAction, tUBTGActionAssociateOnClickItem_NONE);
            UBTGMediaWidget* mediaWidget = new UBTGMediaWidget(element->attributes.value("relativePath"), newWidgetItem);
            newWidgetItem->setExpanded(false);
            mpTreeWidget->setItemWidget(mediaItem, 0, mediaWidget);
        }
        else if (element->name == "link") {
            createMediaButtonItem();
            QTreeWidgetItem* newWidgetItem = new QTreeWidgetItem( mpMediaSwitchItem);
            newWidgetItem->setIcon(0, QIcon(":images/teacherGuide/link.png"));
            newWidgetItem->setText(0, element->attributes.value("title"));
            newWidgetItem->setData(0, tUBTGTreeWidgetItemRole_HasAnAction, tUBTGActionAssociateOnClickItem_URL);
            newWidgetItem->setData(0, tUBTGTreeWidgetItemRole_HasAnUrl, QVariant(element->attributes.value("url")));
            newWidgetItem->setData(0, Qt::FontRole, QVariant(QFont(QApplication::font().family(), 11)));
            newWidgetItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
            mpRootWidgetItem->addChild(newWidgetItem);
        }
    }
}

void UBTeacherGuidePresentationWidget::onAddItemClicked(QTreeWidgetItem* widget, int column)
{
    int associateAction = widget->data(column,
                                       tUBTGTreeWidgetItemRole_HasAnAction).toInt();
    if (column == 0 && associateAction != tUBTGActionAssociateOnClickItem_NONE) {
        switch (associateAction) {
        case tUBTGActionAssociateOnClickItem_EXPAND:
            widget->setExpanded(!widget->isExpanded());
            if (widget->isExpanded())
                mpMediaSwitchItem->setText(0, "-");
            else
                mpMediaSwitchItem->setText(0, "+");
            break;
        case tUBTGActionAssociateOnClickItem_URL:
            widget->data(column, tUBTGTreeWidgetItemRole_HasAnUrl).toString();
            UBApplication::webController->loadUrl( QUrl( widget->data(column, tUBTGTreeWidgetItemRole_HasAnUrl).toString()));
            break;
        case tUBTGActionAssociateOnClickItem_MEDIA:
            widget->setExpanded(!widget->isExpanded());
            break;
        default:
            qDebug() << "associateAction no action set " << associateAction;
        }
    }
}

/***************************************************************************
 *                  class   UBTeacherGuidePageZeroWidget                   *
 ***************************************************************************/
UBTeacherGuidePageZeroWidget::UBTeacherGuidePageZeroWidget(QWidget* parent, const char* name) :
    QWidget(parent)
  , mpLayout(NULL)
  , mpButtonTitleLayout(NULL)
  , mpModePushButton(NULL)
  , mpPageNumberLabel(NULL)
  , mpSessionTitle(NULL)
  , mpSeparatorSessionTitle(NULL)
  , mpAuthorsLabel(NULL)
  , mpAuthors(NULL)
  , mpSeparatorAuthors(NULL)
  , mpCreationLabel(NULL)
  , mpLastModifiedLabel(NULL)
  , mpObjectivesLabel(NULL)
  , mpObjectives(NULL)
  , mpSeparatorObjectives(NULL)
  , mpIndexLabel(NULL)
  , mpKeywordsLabel(NULL)
  , mpKeywords(NULL)
  , mpSchoolLevelItemLabel(NULL)
  , mpSchoolLevelBox(NULL)
  , mpSchoolLevelValueLabel(NULL)
  , mpSchoolSubjectsItemLabel(NULL)
  , mpSchoolSubjectsBox(NULL)
  , mpSchoolSubjectsValueLabel(NULL)
  , mpSchoolTypeItemLabel(NULL)
  , mpSchoolTypeBox(NULL)
  , mpSchoolTypeValueLabel(NULL)
  , mpSeparatorIndex(NULL)
  , mpLicenceLabel(NULL)
  , mpLicenceBox( NULL)
  , mpLicenceIcon(NULL)
  , mpLicenceLayout(NULL)
  , mpSceneItemSessionTitle(NULL)
{
    setObjectName(name);
    QString chapterStyle("QLabel {font-size:16px; font-weight:bold;}");
    mpLayout = new QVBoxLayout(0);
    setLayout(mpLayout);
    mpPageNumberLabel = new QLabel(this);
    mpPageNumberLabel->setAlignment(Qt::AlignRight);
    mpPageNumberLabel->setObjectName("UBTGPageNumberLabel");
    mpPageNumberLabel->setText(tr("Title page"));
    mpLayout->addWidget(mpPageNumberLabel);

    mpButtonTitleLayout = new QHBoxLayout(0);

    mpModePushButton = new QPushButton(this);
    mpModePushButton->setIcon(QIcon(":images/pencil.svg"));
    mpModePushButton->setMaximumWidth(32);
    mpModePushButton->installEventFilter(this);
    mpButtonTitleLayout->addWidget(mpModePushButton);
    connect(mpModePushButton, SIGNAL(clicked()), this, SLOT(switchToMode()));

    mpSessionTitle = new UBTGAdaptableText(0, this, "UBTGSessionTitle");
    mpSessionTitle->setPlaceHolderText(tr("Type session title here ..."));
    mpButtonTitleLayout->addWidget(mpSessionTitle);

    mpLayout->addLayout(mpButtonTitleLayout);

    mpSeparatorSessionTitle = new QFrame(this);
    mpSeparatorSessionTitle->setFixedHeight(UBTG_SEPARATOR_FIXED_HEIGHT);
    mpSeparatorSessionTitle->setObjectName("UBTGSeparator");
    mpLayout->addWidget(mpSeparatorSessionTitle);

    mpAuthorsLabel = new QLabel(this);
    mpAuthorsLabel->setObjectName("UBTGZeroPageEditionModeTitle");
    mpAuthorsLabel->setText(tr("Author(s)"));
    mpAuthorsLabel->setStyleSheet(chapterStyle);
    mpLayout->addWidget(mpAuthorsLabel);

    mpAuthors = new UBTGAdaptableText(0, this);
    mpAuthors->setObjectName("UBTGZeroPageInputText");
    mpAuthors->setPlaceHolderText(tr("Type authors here ..."));
    mpLayout->addWidget(mpAuthors);

    mpCreationLabel = new QLabel(this);
    mpCreationLabel->setObjectName("UBTGZeroPageDateLabel");
    mpLayout->addWidget(mpCreationLabel);

    mpLastModifiedLabel = new QLabel(this);
    mpLastModifiedLabel->setObjectName("UBTGZeroPageDateLabel");
    mpLayout->addWidget(mpLastModifiedLabel);

    mpSeparatorAuthors = new QFrame(this);
    mpSeparatorAuthors->setFixedHeight(UBTG_SEPARATOR_FIXED_HEIGHT);
    mpSeparatorAuthors->setObjectName("UBTGSeparator");
    mpLayout->addWidget(mpSeparatorAuthors);

    mpObjectivesLabel = new QLabel(this);
    mpObjectivesLabel->setObjectName("UBTGZeroPageEditionModeTitle");
    mpObjectivesLabel->setText(tr("Objective(s)"));
    mpObjectivesLabel->setStyleSheet(chapterStyle);
    mpLayout->addWidget(mpObjectivesLabel);

    mpObjectives = new UBTGAdaptableText(0, this);
    mpObjectives->setObjectName("UBTGZeroPageInputText");
    mpObjectives->setPlaceHolderText(tr("Type objectives here..."));
    mpLayout->addWidget(mpObjectives);

    mpSeparatorObjectives = new QFrame(this);
    mpSeparatorObjectives->setFixedHeight(UBTG_SEPARATOR_FIXED_HEIGHT);
    mpSeparatorObjectives->setObjectName("UBTGSeparator");
    mpLayout->addWidget(mpSeparatorObjectives);

    mpIndexLabel = new QLabel(this);
    mpIndexLabel->setObjectName("UBTGZeroPageEditionModeTitle");
    mpIndexLabel->setText(tr("Resource indexing"));
    mpIndexLabel->setStyleSheet(chapterStyle);
    mpLayout->addWidget(mpIndexLabel);

    mpKeywordsLabel = new QLabel(this);
    mpKeywordsLabel->setObjectName("UBTGZeroPageItemLabel");
    mpKeywordsLabel->setText(tr("Keywords:"));
    mpKeywordsLabel->setStyleSheet(chapterStyle);
    mpLayout->addWidget(mpKeywordsLabel);
    mpKeywords = new UBTGAdaptableText(0, this);
    mpKeywords->setPlaceHolderText(tr("Type keywords here ..."));
    mpLayout->addWidget(mpKeywords);

    mpSchoolLevelItemLabel = new QLabel(this);
    mpSchoolLevelItemLabel->setObjectName("UBTGZeroPageItemLabel");
    mpSchoolLevelItemLabel->setText(tr("Level:"));
    mpSchoolLevelItemLabel->setStyleSheet(chapterStyle);
    mpLayout->addWidget(mpSchoolLevelItemLabel);
    mpSchoolLevelBox = new QComboBox(this);
    mpSchoolLevelBox->setMinimumHeight(22);
    mpSchoolLevelBox->setObjectName("DockPaletteWidgetComboBox");
    connect(mpSchoolLevelBox, SIGNAL(currentIndexChanged(QString)), this, SLOT(onSchoolLevelChanged(QString)));
    mpLayout->addWidget(mpSchoolLevelBox);
    mpSchoolLevelValueLabel = new QLabel(this);
    mpLayout->addWidget(mpSchoolLevelValueLabel);

    mpSchoolSubjectsItemLabel = new QLabel(this);
    mpSchoolSubjectsItemLabel->setObjectName("UBTGZeroPageItemLabel");
    mpSchoolSubjectsItemLabel->setText(tr("Subjects:"));
    mpSchoolSubjectsItemLabel->setStyleSheet(chapterStyle);
    mpLayout->addWidget(mpSchoolSubjectsItemLabel);
    mpSchoolSubjectsBox = new QComboBox(this);
    mpSchoolSubjectsBox->setMinimumHeight(22);
    mpSchoolSubjectsBox->setObjectName("DockPaletteWidgetComboBox");
    mpLayout->addWidget(mpSchoolSubjectsBox);
    mpSchoolSubjectsValueLabel = new QLabel(this);
    mpLayout->addWidget(mpSchoolSubjectsValueLabel);

    mpSchoolTypeItemLabel = new QLabel(this);
    mpSchoolTypeItemLabel->setObjectName("UBTGZeroPageItemLabel");
    mpSchoolTypeItemLabel->setText(tr("Type:"));
    mpSchoolTypeItemLabel->setStyleSheet(chapterStyle);
    mpLayout->addWidget(mpSchoolTypeItemLabel);
    mpSchoolTypeBox = new QComboBox(this);
    mpSchoolTypeBox->setMinimumHeight(22);
    mpSchoolTypeBox->setObjectName("DockPaletteWidgetComboBox");
    mpLayout->addWidget(mpSchoolTypeBox);
    mpSchoolTypeValueLabel = new QLabel(this);
    mpLayout->addWidget(mpSchoolTypeValueLabel);

    mpSeparatorIndex = new QFrame(this);
    mpSeparatorIndex->setFixedHeight(UBTG_SEPARATOR_FIXED_HEIGHT);
    mpSeparatorIndex->setObjectName("UBTGSeparator");
    mpLayout->addWidget(mpSeparatorIndex);

    mpLicenceLabel = new QLabel(this);
    mpLicenceLabel->setObjectName("UBTGZeroPageItemLabel");
    mpLicenceLabel->setText(tr("Licence"));
    mpLicenceLabel->setStyleSheet(chapterStyle);
    mpLayout->addWidget(mpLicenceLabel);
    mpLicenceBox = new QComboBox(this);
    mpLicenceBox->setMinimumHeight(22);
    mpLicenceBox->setObjectName("DockPaletteWidgetComboBox");
    mpLayout->addWidget(mpLicenceBox);
    mpLicenceLayout = new QHBoxLayout(0);
    mpLicenceIcon = new QLabel(this);
    mpLicenceLayout->addWidget(mpLicenceIcon);
    mpLicenceValueLabel = new QLabel(this);
    mpLicenceLayout->addWidget(mpLicenceValueLabel);
    mpLayout->addLayout(mpLicenceLayout);
    mpLayout->addStretch(1);

    connect(UBApplication::boardController, SIGNAL(activeSceneChanged()), this, SLOT(onActiveSceneChanged()));
    fillComboBoxes();
}

UBTeacherGuidePageZeroWidget::~UBTeacherGuidePageZeroWidget()
{
    DELETEPTR(mpPageNumberLabel);
    DELETEPTR(mpSessionTitle);
    DELETEPTR(mpSeparatorSessionTitle);
    DELETEPTR(mpAuthorsLabel);
    DELETEPTR(mpAuthors);
    DELETEPTR(mpSeparatorAuthors);
    DELETEPTR(mpCreationLabel);
    DELETEPTR(mpLastModifiedLabel);
    DELETEPTR(mpObjectivesLabel);
    DELETEPTR(mpObjectives);
    DELETEPTR(mpSeparatorObjectives);
    DELETEPTR(mpIndexLabel);
    DELETEPTR(mpKeywordsLabel);
    DELETEPTR(mpKeywords);
    DELETEPTR(mpSchoolLevelItemLabel);
    DELETEPTR(mpSchoolLevelBox);
    DELETEPTR(mpSchoolSubjectsItemLabel);
    DELETEPTR(mpSchoolSubjectsBox);
    DELETEPTR(mpSchoolTypeItemLabel);
    DELETEPTR(mpSchoolTypeBox);
    DELETEPTR(mpSeparatorIndex);
    DELETEPTR(mpLicenceLabel);
    DELETEPTR(mpLicenceBox);
    DELETEPTR(mpLicenceValueLabel);
    DELETEPTR(mpLicenceIcon);
    DELETEPTR(mpModePushButton);
    DELETEPTR(mpLicenceLayout);
    DELETEPTR(mpButtonTitleLayout);
    DELETEPTR(mpLayout);
}

bool UBTeacherGuidePageZeroWidget::eventFilter(QObject* object, QEvent* event)
{
    Q_UNUSED(object);
    if (event->type() == QEvent::HoverEnter || event->type() == QEvent::HoverMove || event->type() == QEvent::HoverLeave)
        return true;
    return false;
}

void UBTeacherGuidePageZeroWidget::fillComboBoxes()
{
    QString parametersConfigFilePath = UBSettings::settings()->applicationCustomizationDirectory() + "/teacherGuide/indexingParameters.xml";
    QFile parametersFile(parametersConfigFilePath);
    if (!parametersFile.exists()) {
        qCritical() << "UBTeacherGuidePageZeroEditionWidget fillComboBoxes file not found " << parametersConfigFilePath;
        return;
    }

    parametersFile.open(QFile::ReadOnly);

    QDomDocument doc;
    doc.setContent(parametersFile.readAll());
    QDomElement rootElement = doc.elementsByTagName("teacherGuide").at(0).toElement();

    QDomNodeList subjects = rootElement.elementsByTagName("subjects");
    for (int baseLevelCounter = 0; baseLevelCounter < subjects.count(); baseLevelCounter += 1) {
        QDomNode subjectsForBaseLevel = subjects.at(baseLevelCounter);
        QDomNodeList subjectsList = subjectsForBaseLevel.childNodes();
        QStringList subjectsRelatedToBaseLevel;
        for (int j = 0; j < subjectsList.count(); j += 1) {
            subjectsRelatedToBaseLevel.append(subjectsList.at(j).toElement().attribute("label"));
        }
        mSubjects.insert( subjectsForBaseLevel.toElement().attribute("baseLevel"), subjectsRelatedToBaseLevel);
    }

    QDomNodeList gradeLevels = rootElement.elementsByTagName("gradeLevels").at(0).childNodes();
    for (int i = 0; i < gradeLevels.count(); i += 1) {
        mGradeLevelsMap.insert(gradeLevels.at(i).toElement().attribute("label"), gradeLevels.at(i).toElement().attribute("baseLevel"));
        mpSchoolLevelBox->addItem( gradeLevels.at(i).toElement().attribute("label"));
    }

    QDomNodeList types = rootElement.elementsByTagName("types").at(0).childNodes();
    for (int i = 0; i < types.count(); i += 1)
        mpSchoolTypeBox->addItem(types.at(i).toElement().attribute("label"));

    parametersFile.close();

    QStringList licences;
    licences << tr("Attribution CC BY") << tr("Attribution-NoDerivs CC BY-ND")
             << tr("Attribution-ShareAlike CC BY-SA")
             << tr("Attribution-NonCommercial CC BY-NC")
             << tr("Attribution-NonCommercial-NoDerivs CC BY-NC-ND")
             << tr("Attribution-NonCommercial-ShareAlike CC BY-NC-SA")
             << tr("Public domain") << tr("Copyright");
    mpLicenceBox->addItems(licences);
    QStringList licenceIconList;
    licenceIconList << ":images/licenses/ccby.png"
                    << ":images/licenses/ccbynd.png" << ":images/licenses/ccbysa.png"
                    << ":images/licenses/ccbync.png" << ":images/licenses/ccbyncnd.png"
                    << ":images/licenses/ccbyncsa.png";
    for (int i = 0; i < licenceIconList.count(); i += 1)
        mpLicenceBox->setItemData(i, licenceIconList.at(i));
}

void UBTeacherGuidePageZeroWidget::onSchoolLevelChanged(QString schoolLevel)
{
    QStringList subjects = mSubjects.value(mGradeLevelsMap.value(schoolLevel));
    mpSchoolSubjectsBox->clear();
    if (subjects.count()) {
        mpSchoolSubjectsItemLabel->setEnabled(true);
        mpSchoolSubjectsBox->setEnabled(true);
        mpSchoolSubjectsBox->addItems(subjects);
    } else {
        mpSchoolSubjectsItemLabel->setDisabled(true);
        mpSchoolSubjectsBox->setDisabled(true);
    }
}

void UBTeacherGuidePageZeroWidget::onActiveSceneChanged()
{
    UBDocumentProxy* documentProxy = UBApplication::boardController->selectedDocument();
    if (documentProxy && UBApplication::boardController->currentPage() == 0) {
        QDateTime creationDate = documentProxy->documentDate();
        mpCreationLabel->setText( tr("Created the:\n") + creationDate.toString(Qt::DefaultLocaleShortDate));
        QDateTime updatedDate = documentProxy->lastUpdate();
        mpLastModifiedLabel->setText( tr("Updated the:\n") + updatedDate.toString(Qt::DefaultLocaleShortDate));
        loadData();
        updateSceneTitle();
    }
}

void UBTeacherGuidePageZeroWidget::hideEvent(QHideEvent * event)
{
    persistData();
    QWidget::hideEvent(event);
}

void UBTeacherGuidePageZeroWidget::loadData()
{
    UBDocumentProxy* documentProxy = UBApplication::boardController->selectedDocument();
    mpSessionTitle->setText( documentProxy->metaData(UBSettings::sessionTitle).toString());
    mpAuthors->setText( documentProxy->metaData(UBSettings::sessionAuthors).toString());
    mpObjectives->setText( documentProxy->metaData(UBSettings::sessionObjectives).toString());
    mpKeywords->setText( documentProxy->metaData(UBSettings::sessionKeywords).toString());

    int currentIndex = mpSchoolLevelBox->findText(documentProxy->metaData(UBSettings::sessionGradeLevel).toString());
    mpSchoolLevelBox->setCurrentIndex((currentIndex != -1) ? currentIndex : 0);

    currentIndex = mpSchoolSubjectsBox->findText(documentProxy->metaData(UBSettings::sessionSubjects).toString());
    mpSchoolSubjectsBox->setCurrentIndex((currentIndex != -1) ? currentIndex : 0);

    currentIndex = mpSchoolTypeBox->findText(documentProxy->metaData(UBSettings::sessionType).toString());
    mpSchoolTypeBox->setCurrentIndex((currentIndex != -1) ? currentIndex : 0);

    currentIndex = mpLicenceBox->findText(documentProxy->metaData(UBSettings::sessionLicence).toString());
    mpLicenceBox->setCurrentIndex((currentIndex != -1) ? currentIndex : 0);
}

void UBTeacherGuidePageZeroWidget::persistData()
{
    // check necessary because at document closing hide event is send after boardcontroller set
    // to NULL
    if (UBApplication::boardController) {
        UBDocumentProxy* documentProxy = UBApplication::boardController->selectedDocument();
        documentProxy->setMetaData(UBSettings::sessionTitle, mpSessionTitle->text());
        documentProxy->setMetaData(UBSettings::sessionAuthors, mpAuthors->text());
        documentProxy->setMetaData(UBSettings::sessionObjectives, mpObjectives->text());
        documentProxy->setMetaData(UBSettings::sessionKeywords, mpKeywords->text());
        documentProxy->setMetaData(UBSettings::sessionGradeLevel, mpSchoolLevelBox->currentText());
        documentProxy->setMetaData(UBSettings::sessionSubjects, mpSchoolSubjectsBox->currentText());
        documentProxy->setMetaData(UBSettings::sessionType, mpSchoolTypeBox->currentText());
        documentProxy->setMetaData(UBSettings::sessionLicence, mpLicenceBox->currentText());
    }
}

void UBTeacherGuidePageZeroWidget::updateSceneTitle()
{
    QString sessionTitle = mpSessionTitle->text();
    if (!sessionTitle.isEmpty())
        UBApplication::boardController->activeScene()->textForObjectName(mpSessionTitle->text());
}

void UBTeacherGuidePageZeroWidget::switchToMode(tUBTGZeroPageMode mode)
{
    if (mode == tUBTGZeroPageMode_EDITION) {
        QString inputStyleSheet("QTextEdit { background: white; border-radius: 10px; border: 2px;}");
        mpModePushButton->hide();
        mpSessionTitle->setReadOnly(false);
        mpSessionTitle->setStyleSheet(inputStyleSheet);
        QFont titleFont(QApplication::font().family(), 11, -1);
        mpSessionTitle->document()->setDefaultFont(titleFont);
        mpAuthors->setReadOnly(false);
        mpAuthors->setStyleSheet(inputStyleSheet);
        mpObjectives->setReadOnly(false);
        mpObjectives->setStyleSheet(inputStyleSheet);
        mpKeywords->setReadOnly(false);
        mpKeywords->setStyleSheet(inputStyleSheet);
        mpSchoolLevelValueLabel->hide();
        mpSchoolLevelBox->show();
        mpSchoolSubjectsValueLabel->hide();
        mpSchoolSubjectsBox->show();
        mpSchoolTypeValueLabel->hide();
        mpSchoolTypeBox->show();
        mpLicenceIcon->hide();
        mpLicenceValueLabel->hide();
        mpLicenceBox->show();
    }
    else {
        QString inputStyleSheet( "QTextEdit { background: transparent; border: none;}");
        mpModePushButton->show();
        mpSessionTitle->showText(mpSessionTitle->text());
        mpSessionTitle->setStyleSheet(inputStyleSheet);
        updateSceneTitle();
        QFont titleFont(QApplication::font().family(), 14, 1);
        mpSessionTitle->document()->setDefaultFont(titleFont);
        mpAuthors->setStyleSheet(inputStyleSheet);
        mpAuthors->setTextColor(QColor(Qt::black));
        mpAuthors->showText(mpAuthors->text());
        mpObjectives->setStyleSheet(inputStyleSheet);
        mpObjectives->setTextColor(QColor(Qt::black));
        mpObjectives->showText(mpObjectives->text());
        mpKeywords->setStyleSheet(inputStyleSheet);
        mpKeywords->setTextColor(QColor(Qt::black));
        mpKeywords->showText(mpKeywords->text());
        mpSchoolLevelValueLabel->setText(mpSchoolLevelBox->currentText());
        mpSchoolLevelValueLabel->show();
        mpSchoolLevelBox->hide();
        mpSchoolSubjectsValueLabel->setText(mpSchoolSubjectsBox->currentText());
        mpSchoolSubjectsValueLabel->show();
        mpSchoolSubjectsBox->hide();
        mpSchoolTypeValueLabel->setText(mpSchoolTypeBox->currentText());
        mpSchoolTypeValueLabel->show();
        mpSchoolTypeBox->hide();
        mpLicenceValueLabel->setText(mpLicenceBox->currentText());
        QString licenceIconPath = mpLicenceBox->itemData(mpLicenceBox->currentIndex()).toString();
        if (!licenceIconPath.isEmpty()) {
            mpLicenceIcon->setPixmap(QPixmap(licenceIconPath));
            mpLicenceIcon->show();
        }
        mpLicenceValueLabel->show();
        mpLicenceBox->hide();
        persistData();
    }
    update();
}

QVector<tUBGEElementNode*> UBTeacherGuidePageZeroWidget::getData()
{
    QVector<tUBGEElementNode*> result;
    tUBGEElementNode* elementNode = new tUBGEElementNode();
    elementNode->name = "sessionTitle";
    elementNode->attributes.insert("value", mpSessionTitle->text());
    result << elementNode;

    elementNode = new tUBGEElementNode();
    elementNode->name = "authors";
    elementNode->attributes.insert("value", mpAuthors->text());
    result << elementNode;

    elementNode = new tUBGEElementNode();
    elementNode->name = "creationDate";
    elementNode->attributes.insert("value", mpCreationLabel->text());
    result << elementNode;

    elementNode = new tUBGEElementNode();
    elementNode->name = "lastModifiedDate";
    elementNode->attributes.insert("value", mpLastModifiedLabel->text());
    result << elementNode;

    elementNode = new tUBGEElementNode();
    elementNode->name = "goals";
    elementNode->attributes.insert("value", mpObjectives->text());
    result << elementNode;

    elementNode = new tUBGEElementNode();
    elementNode->name = "keywords";
    elementNode->attributes.insert("value", mpKeywords->text());
    result << elementNode;

    elementNode = new tUBGEElementNode();
    elementNode->name = "schoolLevel";
    elementNode->attributes.insert("value", mpSchoolLevelBox->currentText());
    result << elementNode;

    elementNode = new tUBGEElementNode();
    elementNode->name = "schoolBranch";
    elementNode->attributes.insert("value", mpSchoolSubjectsBox->currentText());
    result << elementNode;

    elementNode = new tUBGEElementNode();
    elementNode->name = "schoolType";
    elementNode->attributes.insert("value", mpSchoolTypeBox->currentText());
    result << elementNode;

    elementNode = new tUBGEElementNode();
    elementNode->name = "licence";
    elementNode->attributes.insert("value", mpLicenceBox->currentText());
    result << elementNode;
    return result;
}

bool UBTeacherGuidePageZeroWidget::isModified()
{
    bool result = false;
    result |= mpSessionTitle->text().length() > 0;
    result |= mpAuthors->text().length() > 0;
    result |= mpObjectives->text().length() > 0;
    result |= mpKeywords->text().length() > 0;
    result |= mpSchoolLevelBox->currentIndex() > 0;
    result |= mpSchoolSubjectsBox->currentIndex() > 0;
    result |= mpSchoolTypeBox->currentIndex() > 0;
    result |= mpLicenceBox->currentIndex() > 0;
    return result;
}

/***************************************************************************
 *                    class    UBTeacherGuideWidget                        *
 ***************************************************************************/
UBTeacherGuideWidget::UBTeacherGuideWidget(QWidget* parent, const char* name) :
    QStackedWidget(parent)
  , mpPageZeroWidget(NULL)
  , mpEditionWidget(NULL)
  , mpPresentationWidget(NULL)
{
    setObjectName(name);
    if (UBSettings::settings()->teacherGuidePageZeroActivated->get().toBool()) {
        mpPageZeroWidget = new UBTeacherGuidePageZeroWidget(this);
        addWidget(mpPageZeroWidget);
    }
    if (UBSettings::settings()->teacherGuideLessonPagesActivated->get().toBool()) {
        mpEditionWidget = new UBTeacherGuideEditionWidget(this);
        addWidget(mpEditionWidget);
        mpPresentationWidget = new UBTeacherGuidePresentationWidget(this);
        addWidget(mpPresentationWidget);
    }

    connect(UBApplication::boardController->controlView(),
            SIGNAL(clickOnBoard()), this, SLOT(showPresentationMode()));
    connectToStylusPalette();
    connect(UBApplication::boardController, SIGNAL(activeSceneChanged()), this,
            SLOT(onActiveSceneChanged()));
}

UBTeacherGuideWidget::~UBTeacherGuideWidget()
{
    DELETEPTR(mpPageZeroWidget);
    DELETEPTR(mpEditionWidget);
    DELETEPTR(mpPresentationWidget);
}

void UBTeacherGuideWidget::onActiveSceneChanged()
{
    if (UBApplication::boardController->currentPage() == 0) {
        setCurrentWidget(mpPageZeroWidget);
        mpPageZeroWidget->switchToMode(tUBTGZeroPageMode_EDITION);
    }
    else
        setCurrentWidget(mpEditionWidget);

}

void UBTeacherGuideWidget::connectToStylusPalette()
{
    if (UBApplication::boardController->paletteManager())
        connect( UBApplication::boardController->paletteManager()->stylusPalette(), SIGNAL(itemOnActionPaletteChanged()), this, SLOT(showPresentationMode()));
    else
        QTimer::singleShot(100, this, SLOT(connectToStylusPalette()));
}

void UBTeacherGuideWidget::showPresentationMode()
{
    if (currentWidget() == mpPageZeroWidget) {
        mCurrentData = mpPageZeroWidget->getData();
        mpPageZeroWidget->switchToMode(tUBTGZeroPageMode_PRESENTATION);
    }
    else if (currentWidget() == mpEditionWidget) {
        mCurrentData = mpEditionWidget->getData();
        mpPresentationWidget->showData(mCurrentData);
        setCurrentWidget(mpPresentationWidget);
    }
}

void UBTeacherGuideWidget::changeMode()
{
    if (currentWidget() == mpEditionWidget)
        setCurrentWidget(mpPresentationWidget);
    else
        setCurrentWidget(mpEditionWidget);

}

bool UBTeacherGuideWidget::isModified()
{
    if (currentWidget() == mpPageZeroWidget)
        return mpPageZeroWidget->isModified();
    else
        return mpEditionWidget->isModified();
}