/*
 * 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 <QScrollArea>

#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 "gui/UBMainWindow.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()));

#ifdef Q_WS_MAC
    // on mac and with the custom qt the widget on the tree are not automatically relocated when using the vertical scrollbar. To relocate them we link the valueChange signal of the vertical scrollbar witht a local signal to trig a change and a repaint of the tree widget
    connect(mpTreeWidget->verticalScrollBar(),SIGNAL(valueChanged(int)),this,SLOT(onSliderMoved(int)));
#endif

    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);
}

#ifdef Q_WS_MAC
void UBTeacherGuideEditionWidget::onSliderMoved(int size)
{
    Q_UNUSED(size);
    mpAddAMediaItem->setExpanded(true);
}
#endif
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);
    setLayout(mpLayout);
    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/teacherGuide/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->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; ");
    mpTreeWidget->setIconSize(QSize(24,24));
    connect(mpTreeWidget, SIGNAL(itemClicked(QTreeWidgetItem*,int)), this, SLOT(onAddItemClicked(QTreeWidgetItem*,int)));
    connect(UBApplication::boardController, SIGNAL(activeSceneChanged()), this, SLOT(onActiveSceneChanged()));
#ifdef Q_WS_MAC
    // on mac and with the custom qt the widget on the tree are not automatically relocated when using the vertical scrollbar. To relocate them we link the valueChange signal of the vertical scrollbar witht a local signal to trig a change and a repaint of the tree widget
    connect(mpTreeWidget->verticalScrollBar(),SIGNAL(valueChanged(int)),this,SLOT(onSliderMoved(int)));
#endif
}

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

#ifdef Q_WS_MAC
void UBTeacherGuidePresentationWidget::onSliderMoved(int size)
{
    Q_UNUSED(size);
    mpMediaSwitchItem->setExpanded(true);
}
#endif

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") + "_24x24.svg"));
            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);
            qDebug() << element->attributes.value("mediaType");
            UBTGMediaWidget* mediaWidget = new UBTGMediaWidget(element->attributes.value("relativePath"), newWidgetItem,0,element->attributes.value("mediaType").contains("flash"));
            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_24x24.svg"));
            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)
  , mpContainerWidgetLayout(NULL)
  , mpModePushButton(NULL)
  , mpPageNumberLabel(NULL)
  , mpScrollArea(NULL)
  , mpContainerWidget(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);

    mpScrollArea = new QScrollArea();
    mpContainerWidget = new QWidget();
    mpContainerWidgetLayout = new QVBoxLayout();

    mpLayout->addWidget(mpScrollArea);
    mpScrollArea->setWidget(mpContainerWidget);
    mpScrollArea->setWidgetResizable(true);
    mpScrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    mpContainerWidget->setLayout(mpContainerWidgetLayout);

    mpButtonTitleLayout = new QHBoxLayout(0);

    mpModePushButton = new QPushButton(this);
    mpModePushButton->setIcon(QIcon(":images/teacherGuide/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 ..."));
    mpSessionTitle->setMaximumLength(1000);
    mpButtonTitleLayout->addWidget(mpSessionTitle);
    connect(this, SIGNAL(resized()), mpSessionTitle, SLOT(onTextChanged()));

    mpContainerWidgetLayout->addLayout(mpButtonTitleLayout);

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

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

    mpAuthors = new UBTGAdaptableText(0, this);
    mpAuthors->setObjectName("UBTGZeroPageInputText");
    mpAuthors->setPlaceHolderText(tr("Type authors here ..."));
    mpContainerWidgetLayout->addWidget(mpAuthors);
    connect(this, SIGNAL(resized()), mpAuthors, SLOT(onTextChanged()));

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

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

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

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

    mpObjectives = new UBTGAdaptableText(0, this);
    mpObjectives->setObjectName("UBTGZeroPageInputText");
    mpObjectives->setPlaceHolderText(tr("Type objectives here..."));
    mpContainerWidgetLayout->addWidget(mpObjectives);
    connect(this, SIGNAL(resized()), mpObjectives, SLOT(onTextChanged()));

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

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

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

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

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

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

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

    mpLicenceLabel = new QLabel(this);
    mpLicenceLabel->setObjectName("UBTGZeroPageItemLabel");
    mpLicenceLabel->setText(tr("Licence"));
    mpLicenceLabel->setStyleSheet(chapterStyle);
    mpContainerWidgetLayout->addWidget(mpLicenceLabel);
    mpLicenceBox = new QComboBox(this);
    mpLicenceBox->setMinimumHeight(22);
    mpLicenceBox->setMinimumWidth(LOWER_RESIZE_WIDTH);
    mpLicenceBox->setObjectName("DockPaletteWidgetComboBox");
    mpContainerWidgetLayout->addWidget(mpLicenceBox);
    mpLicenceLayout = new QHBoxLayout(0);
    mpLicenceIcon = new QLabel(this);
    mpLicenceIcon->setMinimumWidth(LOWER_RESIZE_WIDTH/2);
    mpLicenceLayout->addWidget(mpLicenceIcon);
    mpLicenceValueLabel = new QLabel(this);
    mpLicenceValueLabel->setMinimumWidth(LOWER_RESIZE_WIDTH/2);
    mpLicenceLayout->addWidget(mpLicenceValueLabel);
    mpContainerWidgetLayout->addLayout(mpLicenceLayout);
    mpContainerWidgetLayout->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(mpContainerWidgetLayout);
    DELETEPTR(mpContainerWidget);
    DELETEPTR(mpScrollArea);
    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-ShareAlike CC BY-SA")
             << tr("Attribution CC BY")
    		 << tr("Attribution-NoDerivs CC BY-ND")
             << 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/ccbysa.png"
                    << ":images/licenses/ccby.png"
                    << ":images/licenses/ccbynd.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 = documentProxy->metaData(UBSettings::sessionLicence).toInt();
    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->currentIndex());
    }
}

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->managePlaceholder(false);
        mpSessionTitle->setStyleSheet(inputStyleSheet);
        QFont titleFont(QApplication::font().family(), 11, -1);
        mpSessionTitle->document()->setDefaultFont(titleFont);
        mpAuthors->setReadOnly(false);
        mpAuthors->managePlaceholder(false);
        mpAuthors->setStyleSheet(inputStyleSheet);
        mpObjectives->setReadOnly(false);
        mpObjectives->managePlaceholder(false);
        mpObjectives->setStyleSheet(inputStyleSheet);
        mpKeywords->setReadOnly(false);
        mpKeywords->managePlaceholder(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", QString("%1").arg(mpLicenceBox->currentIndex()));
    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;
}

void UBTeacherGuidePageZeroWidget::resizeEvent(QResizeEvent* ev)
{
	emit resized();
	QWidget::resizeEvent(ev);
}

/***************************************************************************
 *                    class    UBTeacherGuideWidget                        *
 ***************************************************************************/
UBTeacherGuideWidget::UBTeacherGuideWidget(QWidget* parent, const char* name) :
    QStackedWidget(parent)
  , mpPageZeroWidget(NULL)
  , mpEditionWidget(NULL)
  , mpPresentationWidget(NULL)
  , mKeyboardActionFired(false)
{
    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) {
    	if(mpPageZeroWidget->isModified())
    		mpPageZeroWidget->switchToMode(tUBTGZeroPageMode_PRESENTATION);
    	else
    		mpPageZeroWidget->switchToMode(tUBTGZeroPageMode_EDITION);

        setCurrentWidget(mpPageZeroWidget);
    }
    else{
    	if(mpEditionWidget->isModified()){
            mCurrentData = mpEditionWidget->getData();
            mpPresentationWidget->showData(mCurrentData);
    		setCurrentWidget(mpPresentationWidget);
    	}
    	else
    		setCurrentWidget(mpEditionWidget);
    }

}

void UBTeacherGuideWidget::onTriggeredAction(bool checked)
{
	Q_UNUSED(checked);
	if(!mKeyboardActionFired)
		showPresentationMode();
	mKeyboardActionFired=false;
}

void UBTeacherGuideWidget::onTriggeredKeyboardAction(bool checked)
{
	Q_UNUSED(checked);
	mKeyboardActionFired = true;
}

void UBTeacherGuideWidget::connectToStylusPalette()
{
	connect(UBApplication::mainWindow->actionPen, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionEraser, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionMarker, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionPointer, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionPlay, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionZoomIn, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionZoomOut, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
    connect(UBApplication::mainWindow->actionCapture, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionHand, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionLine, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionText, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionSelector, SIGNAL(triggered(bool)), this, SLOT(onTriggeredAction(bool)));
	connect(UBApplication::mainWindow->actionVirtualKeyboard, SIGNAL(triggered(bool)), this, SLOT(onTriggeredKeyboardAction(bool)));
}

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();
}