#include <QLabel>
#include <QToolButton>
#include <QTreeView>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QToolBar>
#include <QTextEdit>
#include <QMenu>
#include <QAction>
#include <QCloseEvent>
#include <QFileDialog>
#include <QMenuBar>
#include <QMessageBox>
#include <QPrintPreviewDialog>
#include <QHeaderView>
#include <QApplication>
#include <QClipboard>
#include <QTextStream>
#include "tab_deck_editor.h"
#include "window_sets.h"
#include "carddatabase.h"
#include "carddatabasemodel.h"
#include "decklistmodel.h"
#include "cardinfowidget.h"
#include "dlg_load_deck_from_clipboard.h"
#include "dlg_edit_tokens.h"
#include "main.h"
#include "settingscache.h"
#include "priceupdater.h"
#include "tab_supervisor.h"
#include "deckstats_interface.h"
#include "abstractclient.h"
#include "pending_command.h"
#include "pb/response.pb.h"
#include "pb/command_deck_upload.pb.h"
#include "filtertreemodel.h"
#include "cardframe.h"
#include "filterbuilder.h"

void SearchLineEdit::keyPressEvent(QKeyEvent *event)
{
    if (treeView && ((event->key() == Qt::Key_Up) || (event->key() == Qt::Key_Down)))
        QCoreApplication::sendEvent(treeView, event);
    QLineEdit::keyPressEvent(event);
}

TabDeckEditor::TabDeckEditor(TabSupervisor *_tabSupervisor, QWidget *parent)
    : Tab(_tabSupervisor, parent), modified(false)
{
    aClearSearch = new QAction(QString(), this);
    aClearSearch->setIcon(QIcon(":/resources/icon_clearsearch.svg"));
    connect(aClearSearch, SIGNAL(triggered()), this, SLOT(actClearSearch()));

    searchLabel = new QLabel();
    searchEdit = new SearchLineEdit;
    searchLabel->setBuddy(searchEdit);
    setFocusProxy(searchEdit);
    setFocusPolicy(Qt::ClickFocus);

    searchEdit->installEventFilter(&searchKeySignals);
    connect(searchEdit, SIGNAL(textChanged(const QString &)), this, SLOT(updateSearch(const QString &)));
    connect(&searchKeySignals, SIGNAL(onEnter()), this, SLOT(actAddCard()));
    connect(&searchKeySignals, SIGNAL(onCtrlAltEqual()), this, SLOT(actAddCard()));
    connect(&searchKeySignals, SIGNAL(onCtrlAltRBracket()), this, SLOT(actAddCardToSideboard()));
    connect(&searchKeySignals, SIGNAL(onCtrlAltMinus()), this, SLOT(actDecrementCard()));
    connect(&searchKeySignals, SIGNAL(onCtrlAltLBracket()), this, SLOT(actDecrementCardFromSideboard()));
    connect(&searchKeySignals, SIGNAL(onCtrlAltEnter()), this, SLOT(actAddCardToSideboard()));
    connect(&searchKeySignals, SIGNAL(onCtrlEnter()), this, SLOT(actAddCardToSideboard()));

    QToolBar *deckEditToolBar = new QToolBar;
    deckEditToolBar->setOrientation(Qt::Horizontal);
    deckEditToolBar->setIconSize(QSize(24, 24));

    QHBoxLayout *searchLayout = new QHBoxLayout;
    searchLayout->addWidget(deckEditToolBar);
    searchLayout->addWidget(searchLabel);
    searchLayout->addWidget(searchEdit);

    databaseModel = new CardDatabaseModel(db, this);
    databaseDisplayModel = new CardDatabaseDisplayModel(this);
    databaseDisplayModel->setSourceModel(databaseModel);
    databaseDisplayModel->setFilterKeyColumn(0);
    databaseDisplayModel->sort(0, Qt::AscendingOrder);

    databaseView = new QTreeView();
    databaseView->setFocusProxy(searchEdit);
    databaseView->setModel(databaseDisplayModel);
    databaseView->setUniformRowHeights(true);
    databaseView->setRootIsDecorated(false);
    databaseView->setAlternatingRowColors(true);
    databaseView->setSortingEnabled(true);
    databaseView->sortByColumn(0, Qt::AscendingOrder);
    databaseView->resizeColumnToContents(0);
    connect(databaseView->selectionModel(), SIGNAL(currentRowChanged(const QModelIndex &, const QModelIndex &)), this, SLOT(updateCardInfoLeft(const QModelIndex &, const QModelIndex &)));
    connect(databaseView, SIGNAL(doubleClicked(const QModelIndex &)), this, SLOT(actAddCard()));
    searchEdit->setTreeView(databaseView);

    QVBoxLayout *leftFrame = new QVBoxLayout;
    leftFrame->addLayout(searchLayout);
    leftFrame->addWidget(databaseView);

    cardInfo = new CardFrame(250, 356);
    aCardTextOnly = new QAction(QString(), this);
    aCardTextOnly->setCheckable(true);
    connect(aCardTextOnly, SIGNAL(triggered()), cardInfo, SLOT(toggleCardTextOnly()));

    filterModel = new FilterTreeModel();
    databaseDisplayModel->setFilterTree(filterModel->filterTree());
    filterView = new QTreeView;
    filterView->setModel(filterModel);
    filterView->setMaximumWidth(250);
    filterView->setUniformRowHeights(true);
    filterView->setHeaderHidden(true);
    filterView->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(filterModel, SIGNAL(layoutChanged()), filterView, SLOT(expandAll()));
    connect(filterView, SIGNAL(customContextMenuRequested(const QPoint &)),
            this, SLOT(filterViewCustomContextMenu(const QPoint &)));
    FilterBuilder *filterBuilder = new FilterBuilder;
    filterBuilder->setMaximumWidth(250);
    connect(filterBuilder, SIGNAL(add(const CardFilter *)), filterModel, SLOT(addFilter(const CardFilter *)));

    QVBoxLayout *filter = new QVBoxLayout;
    filter->addWidget(filterBuilder, 0, Qt::AlignTop);
    filter->addWidget(filterView, 10);

    QVBoxLayout *middleFrame = new QVBoxLayout;
    middleFrame->addWidget(cardInfo, 0, Qt::AlignTop);
    middleFrame->addLayout(filter, 10);

    deckModel = new DeckListModel(this);
    connect(deckModel, SIGNAL(deckHashChanged()), this, SLOT(updateHash()));
    deckView = new QTreeView();
    deckView->setModel(deckModel);
    deckView->setUniformRowHeights(true);
    deckView->setSortingEnabled(true);
    deckView->sortByColumn(1, Qt::AscendingOrder);
    deckView->header()->setResizeMode(QHeaderView::ResizeToContents);
    deckView->installEventFilter(&deckViewKeySignals);
    connect(deckView->selectionModel(), SIGNAL(currentRowChanged(const QModelIndex &, const QModelIndex &)), this, SLOT(updateCardInfoRight(const QModelIndex &, const QModelIndex &)));
    connect(&deckViewKeySignals, SIGNAL(onEnter()), this, SLOT(actIncrement()));
    connect(&deckViewKeySignals, SIGNAL(onCtrlAltEqual()), this, SLOT(actIncrement()));
    connect(&deckViewKeySignals, SIGNAL(onCtrlAltMinus()), this, SLOT(actDecrement()));
    connect(&deckViewKeySignals, SIGNAL(onRight()), this, SLOT(actIncrement()));
    connect(&deckViewKeySignals, SIGNAL(onLeft()), this, SLOT(actDecrement()));
    connect(&deckViewKeySignals, SIGNAL(onDelete()), this, SLOT(actRemoveCard()));

    nameLabel = new QLabel();
    nameEdit = new QLineEdit;
    nameLabel->setBuddy(nameEdit);
    connect(nameEdit, SIGNAL(textChanged(const QString &)), this, SLOT(updateName(const QString &)));
    commentsLabel = new QLabel();
    commentsEdit = new QTextEdit;
    commentsEdit->setMaximumHeight(70);
    commentsLabel->setBuddy(commentsEdit);
    connect(commentsEdit, SIGNAL(textChanged()), this, SLOT(updateComments()));
    hashLabel1 = new QLabel();
    hashLabel = new QLabel;

    QGridLayout *grid = new QGridLayout;
    grid->addWidget(nameLabel, 0, 0);
    grid->addWidget(nameEdit, 0, 1);

    grid->addWidget(commentsLabel, 1, 0);
    grid->addWidget(commentsEdit, 1, 1);

    grid->addWidget(hashLabel1, 2, 0);
    grid->addWidget(hashLabel, 2, 1);

    // Update price
    aUpdatePrices = new QAction(QString(), this);
    aUpdatePrices->setIcon(QIcon(":/resources/icon_update.png"));
    connect(aUpdatePrices, SIGNAL(triggered()), this, SLOT(actUpdatePrices()));
    if (!settingsCache->getPriceTagFeature())
        aUpdatePrices->setVisible(false);
    connect(settingsCache, SIGNAL(priceTagFeatureChanged(int)), this, SLOT(setPriceTagFeatureEnabled(int)));

    QToolBar *deckToolBar = new QToolBar;
    deckToolBar->setOrientation(Qt::Vertical);
    deckToolBar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
    deckToolBar->setIconSize(QSize(24, 24));
    deckToolBar->addAction(aUpdatePrices);
    QHBoxLayout *deckToolbarLayout = new QHBoxLayout;
    deckToolbarLayout->addStretch();
    deckToolbarLayout->addWidget(deckToolBar);
    deckToolbarLayout->addStretch();

    QVBoxLayout *rightFrame = new QVBoxLayout;
    rightFrame->addLayout(grid);
    rightFrame->addWidget(deckView, 10);
    rightFrame->addLayout(deckToolbarLayout);

    QHBoxLayout *mainLayout = new QHBoxLayout;
    mainLayout->addLayout(leftFrame, 10);
    mainLayout->addLayout(middleFrame);
    mainLayout->addLayout(rightFrame);
    setLayout(mainLayout);

    aNewDeck = new QAction(QString(), this);
    aNewDeck->setShortcuts(QKeySequence::New);
    connect(aNewDeck, SIGNAL(triggered()), this, SLOT(actNewDeck()));
    aLoadDeck = new QAction(QString(), this);
    aLoadDeck->setShortcuts(QKeySequence::Open);
    connect(aLoadDeck, SIGNAL(triggered()), this, SLOT(actLoadDeck()));
    aSaveDeck = new QAction(QString(), this);
    aSaveDeck->setShortcuts(QKeySequence::Save);
    connect(aSaveDeck, SIGNAL(triggered()), this, SLOT(actSaveDeck()));
    aSaveDeckAs = new QAction(QString(), this);
//    aSaveDeckAs->setShortcuts(QKeySequence::SaveAs);
    connect(aSaveDeckAs, SIGNAL(triggered()), this, SLOT(actSaveDeckAs()));
    aLoadDeckFromClipboard = new QAction(QString(), this);
    connect(aLoadDeckFromClipboard, SIGNAL(triggered()), this, SLOT(actLoadDeckFromClipboard()));
    aLoadDeckFromClipboard->setShortcuts(QKeySequence::Paste);
    aSaveDeckToClipboard = new QAction(QString(), this);
    connect(aSaveDeckToClipboard, SIGNAL(triggered()), this, SLOT(actSaveDeckToClipboard()));
    aSaveDeckToClipboard->setShortcuts(QKeySequence::Copy);
    aPrintDeck = new QAction(QString(), this);
    aPrintDeck->setShortcuts(QKeySequence::Print);
    connect(aPrintDeck, SIGNAL(triggered()), this, SLOT(actPrintDeck()));
    aAnalyzeDeck = new QAction(QString(), this);
    connect(aAnalyzeDeck, SIGNAL(triggered()), this, SLOT(actAnalyzeDeck()));
    aClose = new QAction(QString(), this);
    connect(aClose, SIGNAL(triggered()), this, SLOT(closeRequest()));

    aEditSets = new QAction(QString(), this);
    connect(aEditSets, SIGNAL(triggered()), this, SLOT(actEditSets()));
    aEditTokens = new QAction(QString(), this);
    connect(aEditTokens, SIGNAL(triggered()), this, SLOT(actEditTokens()));

    deckMenu = new QMenu(this);
    deckMenu->addAction(aNewDeck);
    deckMenu->addAction(aLoadDeck);
    deckMenu->addAction(aSaveDeck);
    deckMenu->addAction(aSaveDeckAs);
    deckMenu->addSeparator();
    deckMenu->addAction(aLoadDeckFromClipboard);
    deckMenu->addAction(aSaveDeckToClipboard);
    deckMenu->addSeparator();
    deckMenu->addAction(aPrintDeck);
    deckMenu->addSeparator();
    deckMenu->addAction(aAnalyzeDeck);
    deckMenu->addSeparator();
    deckMenu->addAction(aClose);
    addTabMenu(deckMenu);

    dbMenu = new QMenu(this);
    dbMenu->addAction(aEditSets);
    dbMenu->addAction(aEditTokens);
    dbMenu->addSeparator();
    dbMenu->addAction(aClearSearch);
    dbMenu->addAction(aCardTextOnly);
    addTabMenu(dbMenu);

    aAddCard = new QAction(QString(), this);
    aAddCard->setIcon(QIcon(":/resources/arrow_right_green.svg"));
    connect(aAddCard, SIGNAL(triggered()), this, SLOT(actAddCard()));
    aAddCardToSideboard = new QAction(QString(), this);
    aAddCardToSideboard->setIcon(QIcon(":/resources/add_to_sideboard.svg"));
    connect(aAddCardToSideboard, SIGNAL(triggered()), this, SLOT(actAddCardToSideboard()));
    aRemoveCard = new QAction(QString(), this);
    aRemoveCard->setIcon(QIcon(":/resources/remove_row.svg"));
    connect(aRemoveCard, SIGNAL(triggered()), this, SLOT(actRemoveCard()));
    aIncrement = new QAction(QString(), this);
    aIncrement->setIcon(QIcon(":/resources/increment.svg"));
    connect(aIncrement, SIGNAL(triggered()), this, SLOT(actIncrement()));
    aDecrement = new QAction(QString(), this);
    aDecrement->setIcon(QIcon(":/resources/decrement.svg"));
    connect(aDecrement, SIGNAL(triggered()), this, SLOT(actDecrement()));

    deckEditToolBar->addAction(aAddCard);
    deckEditToolBar->addAction(aAddCardToSideboard);
    deckEditToolBar->addAction(aRemoveCard);
    deckEditToolBar->addAction(aIncrement);
    deckEditToolBar->addAction(aDecrement);
    deckEditToolBar->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
    
    retranslateUi();
    
    resize(950, 700);
}

TabDeckEditor::~TabDeckEditor()
{
    emit deckEditorClosing(this);
}

void TabDeckEditor::retranslateUi()
{
    aCardTextOnly->setText(tr("Show card text only"));
    aClearSearch->setText(tr("&Clear search"));
    searchLabel->setText(tr("&Search for:"));
    
    nameLabel->setText(tr("Deck &name:"));
    commentsLabel->setText(tr("&Comments:"));
    hashLabel1->setText(tr("Hash:"));
    
    aUpdatePrices->setText(tr("&Update prices"));
    aUpdatePrices->setShortcut(tr("Ctrl+U"));

    aNewDeck->setText(tr("&New deck"));
    aLoadDeck->setText(tr("&Load deck..."));
    aSaveDeck->setText(tr("&Save deck"));
    aSaveDeckAs->setText(tr("Save deck &as..."));
    aLoadDeckFromClipboard->setText(tr("Load deck from cl&ipboard..."));
    aSaveDeckToClipboard->setText(tr("Save deck to clip&board"));
    aPrintDeck->setText(tr("&Print deck..."));
    aAnalyzeDeck->setText(tr("&Analyze deck on deckstats.net"));
    aClose->setText(tr("&Close"));
    aClose->setShortcut(tr("Ctrl+Q"));
    
    aAddCard->setText(tr("Add card to &maindeck"));
    aAddCardToSideboard->setText(tr("Add card to &sideboard"));

    aRemoveCard->setText(tr("&Remove row"));
    aRemoveCard->setShortcut(tr("Del"));
    aIncrement->setText(tr("&Increment number"));
    aIncrement->setShortcut(tr("+"));
    aDecrement->setText(tr("&Decrement number"));
    aDecrement->setShortcut(tr("-"));
    
    deckMenu->setTitle(tr("&Deck editor"));
    dbMenu->setTitle(tr("C&ard database"));
    
    aEditSets->setText(tr("&Edit sets..."));
    aEditTokens->setText(tr("Edit &tokens..."));
}

QString TabDeckEditor::getTabText() const
{
    QString result = tr("Deck: %1").arg(nameEdit->text());
    if (modified)
        result.prepend("* ");
    return result;
}

void TabDeckEditor::updateName(const QString &name)
{
    deckModel->getDeckList()->setName(name);
    setModified(true);
}

void TabDeckEditor::updateComments()
{
    deckModel->getDeckList()->setComments(commentsEdit->toPlainText());
    setModified(true);
}

void TabDeckEditor::updateCardInfoLeft(const QModelIndex &current, const QModelIndex &/*previous*/)
{
    cardInfo->setCard(current.sibling(current.row(), 0).data().toString());
}

void TabDeckEditor::updateCardInfoRight(const QModelIndex &current, const QModelIndex &/*previous*/)
{
    if (!current.isValid())
        return;
    if (!current.model()->hasChildren(current.sibling(current.row(), 0)))
        cardInfo->setCard(current.sibling(current.row(), 1).data().toString());
}

void TabDeckEditor::updateSearch(const QString &search)
{
    databaseDisplayModel->setCardNameBeginning(search);
    QModelIndexList sel = databaseView->selectionModel()->selectedRows();
    if (sel.isEmpty() && databaseDisplayModel->rowCount())
        databaseView->selectionModel()->setCurrentIndex(databaseDisplayModel->index(0, 0), QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
}

void TabDeckEditor::updateHash()
{
    hashLabel->setText(deckModel->getDeckList()->getDeckHash());
}

bool TabDeckEditor::confirmClose()
{
    if (modified) {
        QMessageBox::StandardButton ret = QMessageBox::warning(this, tr("Are you sure?"),
            tr("The decklist has been modified.\nDo you want to save the changes?"),
            QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel);
        if (ret == QMessageBox::Save)
            return actSaveDeck();
        else if (ret == QMessageBox::Cancel)
            return false;
    }
    return true;
}

void TabDeckEditor::closeRequest()
{
    if (confirmClose())
        deleteLater();
}

void TabDeckEditor::actNewDeck()
{
    if (!confirmClose())
        return;

    deckModel->cleanList();
    nameEdit->setText(QString());
    commentsEdit->setText(QString());
    hashLabel->setText(QString());
    setModified(false);
}

void TabDeckEditor::actLoadDeck()
{
    if (!confirmClose())
        return;

    QFileDialog dialog(this, tr("Load deck"));
    dialog.setDirectory(settingsCache->getDeckPath());
    dialog.setNameFilters(DeckLoader::fileNameFilters);
    if (!dialog.exec())
        return;

    QString fileName = dialog.selectedFiles().at(0);
    DeckLoader::FileFormat fmt = DeckLoader::getFormatFromName(fileName);
    
    DeckLoader *l = new DeckLoader;
    if (l->loadFromFile(fileName, fmt))
        setDeck(l);
    else
        delete l;
}

void TabDeckEditor::saveDeckRemoteFinished(const Response &response)
{
    if (response.response_code() != Response::RespOk)
        QMessageBox::critical(this, tr("Error"), tr("The deck could not be saved."));
    else
        setModified(false);
}

bool TabDeckEditor::actSaveDeck()
{
    DeckLoader *const deck = deckModel->getDeckList();
    if (deck->getLastRemoteDeckId() != -1) {
        Command_DeckUpload cmd;
        cmd.set_deck_id(deck->getLastRemoteDeckId());
        cmd.set_deck_list(deck->writeToString_Native().toStdString());
        
        PendingCommand *pend = AbstractClient::prepareSessionCommand(cmd);
        connect(pend, SIGNAL(finished(Response, CommandContainer, QVariant)), this, SLOT(saveDeckRemoteFinished(Response)));
        tabSupervisor->getClient()->sendCommand(pend);
        
        return true;
    } else if (deck->getLastFileName().isEmpty())
        return actSaveDeckAs();
    else if (deck->saveToFile(deck->getLastFileName(), deck->getLastFileFormat())) {
        setModified(false);
        return true;
    }
    QMessageBox::critical(this, tr("Error"), tr("The deck could not be saved.\nPlease check that the directory is writable and try again."));
    return false;
}

bool TabDeckEditor::actSaveDeckAs()
{
    QFileDialog dialog(this, tr("Save deck"));
    dialog.setDirectory(settingsCache->getDeckPath());
    dialog.setAcceptMode(QFileDialog::AcceptSave);
    dialog.setConfirmOverwrite(true);
    dialog.setDefaultSuffix("cod");
    dialog.setNameFilters(DeckLoader::fileNameFilters);
    dialog.selectFile(deckModel->getDeckList()->getName());
    if (!dialog.exec())
        return false;

    QString fileName = dialog.selectedFiles().at(0);
    DeckLoader::FileFormat fmt = DeckLoader::getFormatFromName(fileName);

    if (!deckModel->getDeckList()->saveToFile(fileName, fmt)) {
        QMessageBox::critical(this, tr("Error"), tr("The deck could not be saved.\nPlease check that the directory is writable and try again."));
        return false;
    }
    setModified(false);
    return true;
}

void TabDeckEditor::actLoadDeckFromClipboard()
{
    if (!confirmClose())
        return;
    
    DlgLoadDeckFromClipboard dlg;
    if (!dlg.exec())
        return;
    
    setDeck(dlg.getDeckList());
    setModified(true);
}

void TabDeckEditor::actSaveDeckToClipboard()
{
    QString buffer;
    QTextStream stream(&buffer);
    deckModel->getDeckList()->saveToStream_Plain(stream);
    QApplication::clipboard()->setText(buffer, QClipboard::Clipboard);
    QApplication::clipboard()->setText(buffer, QClipboard::Selection);
}

void TabDeckEditor::actPrintDeck()
{
    QPrintPreviewDialog *dlg = new QPrintPreviewDialog(this);
    connect(dlg, SIGNAL(paintRequested(QPrinter *)), deckModel, SLOT(printDeckList(QPrinter *)));
    dlg->exec();
}

void TabDeckEditor::actAnalyzeDeck()
{
    DeckStatsInterface *interface = new DeckStatsInterface(this); // it deletes itself when done
    interface->analyzeDeck(deckModel->getDeckList());
}

void TabDeckEditor::actEditSets()
{
    WndSets *w = new WndSets;
    w->setWindowModality(Qt::WindowModal);
    w->show();
}

void TabDeckEditor::actEditTokens()
{
    DlgEditTokens dlg(databaseModel);
    dlg.exec();
    db->saveToFile(settingsCache->getTokenDatabasePath(), true);
}

void TabDeckEditor::actClearSearch()
{
    databaseDisplayModel->clearSearch();
}

void TabDeckEditor::recursiveExpand(const QModelIndex &index)
{
    if (index.parent().isValid())
        recursiveExpand(index.parent());
    deckView->expand(index);
}

CardInfo *TabDeckEditor::currentCardInfo() const
{
    const QModelIndex currentIndex = databaseView->selectionModel()->currentIndex();
    if (!currentIndex.isValid())
        return NULL;
    const QString cardName = currentIndex.sibling(currentIndex.row(), 0).data().toString();
    
    return db->getCard(cardName);
}

void TabDeckEditor::addCardHelper(QString zoneName)
{
    const CardInfo *info;

    info = currentCardInfo();
    if(!info)
        return;
    if (info->getIsToken())
        zoneName = "tokens";

    QModelIndex newCardIndex = deckModel->addCard(info->getName(), zoneName);
    recursiveExpand(newCardIndex);
    deckView->setCurrentIndex(newCardIndex);
    setModified(true);
}

void TabDeckEditor::actAddCard()
{
    addCardHelper("main");
}

void TabDeckEditor::actAddCardToSideboard()
{
    addCardHelper("side");
}

void TabDeckEditor::actRemoveCard()
{
    const QModelIndex &currentIndex = deckView->selectionModel()->currentIndex();
    if (!currentIndex.isValid() || deckModel->hasChildren(currentIndex))
        return;
    deckModel->removeRow(currentIndex.row(), currentIndex.parent());
    setModified(true);
}

void TabDeckEditor::offsetCountAtIndex(const QModelIndex &idx, int offset)
{
    if (!idx.isValid() || offset == 0)
        return;

    const QModelIndex numberIndex = idx.sibling(idx.row(), 0);
    const int count = deckModel->data(numberIndex, Qt::EditRole).toInt();
    const int new_count = count + offset;
    deckView->setCurrentIndex(numberIndex);
    if (new_count <= 0)
        deckModel->removeRow(idx.row(), idx.parent());
    else
        deckModel->setData(numberIndex, new_count, Qt::EditRole);
    setModified(true);
}

void TabDeckEditor::decrementCardHelper(QString zoneName)
{
    const CardInfo *info;
    QModelIndex idx;

    info = currentCardInfo();
    if(!info)
        return;
    if (info->getIsToken())
        zoneName = "tokens";

    idx = deckModel->findCard(info->getName(), zoneName);
    offsetCountAtIndex(idx, -1);
}

void TabDeckEditor::actDecrementCard()
{
    decrementCardHelper("main");
}

void TabDeckEditor::actDecrementCardFromSideboard()
{
    decrementCardHelper("side");
}

void TabDeckEditor::actIncrement()
{
    const QModelIndex &currentIndex = deckView->selectionModel()->currentIndex();
    offsetCountAtIndex(currentIndex, 1);
}

void TabDeckEditor::actDecrement()
{
    const QModelIndex &currentIndex = deckView->selectionModel()->currentIndex();
    offsetCountAtIndex(currentIndex, -1);
}

void TabDeckEditor::setPriceTagFeatureEnabled(int enabled)
{
    aUpdatePrices->setVisible(enabled);
}

void TabDeckEditor::actUpdatePrices()
{
    aUpdatePrices->setDisabled(true);
    PriceUpdater *up = new PriceUpdater(deckModel->getDeckList());
    connect(up, SIGNAL(finishedUpdate()), this, SLOT(finishedUpdatingPrices()));
    up->updatePrices();
}

void TabDeckEditor::finishedUpdatingPrices()
{
    deckModel->pricesUpdated();
    setModified(true);
    aUpdatePrices->setDisabled(false);
}

void TabDeckEditor::setDeck(DeckLoader *_deck)
{
    deckModel->setDeckList(_deck);

    nameEdit->setText(deckModel->getDeckList()->getName());
    commentsEdit->setText(deckModel->getDeckList()->getComments());
    updateHash();
    deckModel->sort(deckView->header()->sortIndicatorSection(), deckView->header()->sortIndicatorOrder());
    deckView->expandAll();
    setModified(false);

    db->cacheCardPixmaps(deckModel->getDeckList()->getCardList());
    deckView->expandAll();
    setModified(false);
}

void TabDeckEditor::setModified(bool _modified)
{
    modified = _modified;
    emit tabTextChanged(this, getTabText());
}

void TabDeckEditor::filterViewCustomContextMenu(const QPoint &point) {
    QMenu menu;
    QAction *action;
    QModelIndex idx;

    idx = filterView->indexAt(point);
    if (!idx.isValid())
        return;

    action = menu.addAction(QString("delete"));
    action->setData(point);
    connect(&menu, SIGNAL(triggered(QAction *)),
            this, SLOT(filterRemove(QAction *)));
    menu.exec(filterView->mapToGlobal(point));
}

void TabDeckEditor::filterRemove(QAction *action) {
    QPoint point;
    QModelIndex idx;

    point = action->data().toPoint();
    idx = filterView->indexAt(point);
    if (!idx.isValid())
        return;

    filterModel->removeRow(idx.row(), idx.parent());
}