#include "toonzqt/paletteviewer.h"

// TnzQt includes
#include "toonzqt/gutil.h"
#include "toonzqt/keyframenavigator.h"
#include "toonzqt/trepetitionguard.h"
#include "toonzqt/dvdialog.h"
#include "toonzqt/dvscrollwidget.h"
#include "toonzqt/studiopaletteviewer.h"
#include "palettedata.h"

// TnzLib includes
#include "toonz/palettecmd.h"
#include "toonz/studiopalettecmd.h"
#include "toonz/txshlevel.h"
#include "toonz/toonzscene.h"
#include "toonz/sceneproperties.h"
#include "toonz/studiopalette.h"
#include "toonz/tframehandle.h"

// TnzCore includes
#include "tconvert.h"

// Qt includes
#include <QVBoxLayout>
#include <QToolBar>
#include <QScrollArea>
#include <QMouseEvent>
#include <QMenuBar>
#include <QToolButton>
#include <QUrl>
#include <QApplication>
#include <QLabel>
#include <QDrag>

using namespace PaletteViewerGUI;

//=============================================================================
/*! \class PaletteViewer
                \brief The PaletteViewer class provides an object to view and
   manage palette view.

                Inherits \b QWidget.

                This object allows to show and manage palette; it's possible
   distinguish three
                view type, class can show: current level palette, current studio
   palette or
                current cleanup palette, using setPalette() to set palette
   viewer.
                The object is composed of a vertical layout with three widget:
                \li a tab bar \b PaletteViewerGUI::TabBar in which are displayed
   palette page
                \b createTabBar();
                \li a central frame \b PaletteViewerGUI::PageViewer in which are
   displayed
                all style of current page in palette
                \li a button bar, \b createToolBar(), \b createPaletteToolBar()
                and \b createSavePaletteToolBar();

                A collection of method allows you to manage this object and its
   interaction
                with palette.
                */
/*!	\fn const TPaletteP PaletteViewer::&getPalette() const
                Return current viewer palette.
                */
/*!	\fn void PaletteViewer::createToolBar()
                Create down button bar.
                */
/*!	\fn void PaletteViewer::updateToolBar()
                Update button bar.
                */
PaletteViewer::PaletteViewer(QWidget *parent, PaletteViewType viewType,
                             bool hasSaveToolBar, bool hasPageCommand,
                             bool hasPasteColors)
    : QFrame(parent)
    , m_tabBarContainer(0)
    , m_pagesBar(0)
    , m_paletteToolBar(0)
    , m_savePaletteToolBar(0)
    , m_pageViewer(0)
    , m_pageViewerScrollArea(0)
    , m_indexPageToDelete(-1)
    , m_viewType(viewType)
    , m_frameHandle(0)
    , m_paletteHandle(0)
    , m_changeStyleCommand(0)
    , m_xsheetHandle(0)
    , m_hasSavePaletteToolbar(hasSaveToolBar)
    , m_hasPageCommand(hasPageCommand)
    , m_isSaveActionEnabled(true)
    , m_lockPaletteAction(0)
    , m_lockPaletteToolButton(0) {
  setObjectName("OnePixelMarginFrame");
  setFrameStyle(QFrame::StyledPanel);

  createTabBar();

  // Create pageView
  m_pageViewerScrollArea = new QScrollArea();
  m_pageViewerScrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  m_pageViewerScrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
  m_pageViewerScrollArea->setWidgetResizable(true);

  m_pageViewer =
      new PageViewer(m_pageViewerScrollArea, m_viewType, hasPasteColors);
  m_pageViewerScrollArea->setWidget(m_pageViewer);
  m_pagesBar->setPageViewer(m_pageViewer);

  // Create toolbar. It is an horizontal layout with three internal toolbar.
  DvScrollWidget *toolbarScrollWidget = new DvScrollWidget;

  toolbarScrollWidget->setObjectName(
      "ToolBarContainer");  // Toonz's qss files are instructed to leave a
  // 1px grey margin on top for scroll buttons
  QWidget *toolBarWidget = new QWidget;  // children of this parent name.
  toolbarScrollWidget->setWidget(toolBarWidget);
  toolBarWidget->setSizePolicy(QSizePolicy::MinimumExpanding,
                               QSizePolicy::Fixed);
  toolBarWidget->setFixedHeight(22);

  m_paletteToolBar     = new QToolBar(toolBarWidget);
  m_savePaletteToolBar = new QToolBar(toolBarWidget);
  createToolBar();

  QHBoxLayout *toolBarLayout = new QHBoxLayout(toolBarWidget);
  toolBarLayout->setMargin(0);
  toolBarLayout->setSpacing(0);
  {
    toolBarLayout->addWidget(m_savePaletteToolBar, 0, Qt::AlignRight);
    toolBarLayout->addWidget(m_paletteToolBar, 0, Qt::AlignRight);
  }
  toolBarWidget->setLayout(toolBarLayout);

  // This widget is used to set the background color of the tabBar
  // using the styleSheet.
  // It is also used to take 6px on the left before the tabBar
  // and to draw the two lines on the bottom size
  m_tabBarContainer = new TabBarContainter(this);

  QVBoxLayout *mainLayout = new QVBoxLayout(this);
  mainLayout->setMargin(0);
  mainLayout->setSpacing(0);
  {
    // To add 6px (on the left) before the TabBar
    QHBoxLayout *hLayout = new QHBoxLayout;
    hLayout->setMargin(0);
    // hLayout->setAlignment(Qt::AlignLeft);
    // hLayout->addSpacing(6);
    {
      hLayout->addWidget(m_pagesBar, 0);
      hLayout->addStretch(1);
      hLayout->addWidget(toolbarScrollWidget, 0);
    }
    m_tabBarContainer->setLayout(hLayout);

    // To align this panel with the style Editor
    mainLayout->addWidget(m_tabBarContainer, 0);
    mainLayout->addWidget(m_pageViewerScrollArea, 1);
  }
  setLayout(mainLayout);

  connect(m_pagesBar, SIGNAL(currentChanged(int)), this,
          SLOT(setPageView(int)));
  connect(m_pagesBar, SIGNAL(movePage(int, int)), this,
          SLOT(movePage(int, int)));
  connect(m_pageViewer, SIGNAL(changeWindowTitleSignal()), this,
          SLOT(changeWindowTitle()));

  changeWindowTitle();

  setAcceptDrops(true);
}

//-----------------------------------------------------------------------------

PaletteViewer::~PaletteViewer() { delete m_changeStyleCommand; }

//-----------------------------------------------------------------------------

void PaletteViewer::setPaletteHandle(TPaletteHandle *paletteHandle) {
  if (m_paletteHandle == paletteHandle) return;

  bool ret                 = true;
  if (m_paletteHandle) ret = ret && disconnect(m_paletteHandle, 0, this, 0);

  m_paletteHandle = paletteHandle;

  if (m_paletteHandle && isVisible()) {
    ret = ret && connect(m_paletteHandle, SIGNAL(paletteSwitched()), this,
                         SLOT(onPaletteSwitched()));
    ret = ret && connect(m_paletteHandle, SIGNAL(paletteChanged()), this,
                         SLOT(onPaletteChanged()));
    ret = ret && connect(m_paletteHandle, SIGNAL(paletteChanged()), this,
                         SLOT(changeWindowTitle()));
    ret = ret && connect(m_paletteHandle, SIGNAL(paletteTitleChanged()), this,
                         SLOT(changeWindowTitle()));
    ret = ret && connect(m_paletteHandle, SIGNAL(colorStyleSwitched()), this,
                         SLOT(onColorStyleSwitched()));
    ret = ret && connect(m_paletteHandle, SIGNAL(colorStyleChanged()), this,
                         SLOT(changeWindowTitle()));
    ret = ret && connect(m_paletteHandle, SIGNAL(paletteDirtyFlagChanged()),
                         this, SLOT(changeWindowTitle()));
  }

  assert(ret);

  if (m_viewType != CLEANUP_PALETTE)
    m_keyFrameButton->setPaletteHandle(m_paletteHandle);
  m_pageViewer->setPaletteHandle(m_paletteHandle);

  setPageView(0);
  updateTabBar();
  updatePaletteToolBar();
}

//-----------------------------------------------------------------------------

void PaletteViewer::setFrameHandle(TFrameHandle *frameHandle) {
  m_frameHandle = frameHandle;
  if (m_viewType != CLEANUP_PALETTE)
    m_keyFrameButton->setFrameHandle(m_frameHandle);
  m_pageViewer->setFrameHandle(m_frameHandle);
}

//-----------------------------------------------------------------------------

void PaletteViewer::setXsheetHandle(TXsheetHandle *xsheetHandle) {
  m_xsheetHandle = xsheetHandle;
  m_pageViewer->setXsheetHandle(m_xsheetHandle);
}

//-----------------------------------------------------------------------------
/*!for clearing level cache after "paste style" command called from style
 * selection
*/
void PaletteViewer::setLevelHandle(TXshLevelHandle *levelHandle) {
  m_pageViewer->setLevelHandle(levelHandle);
}

//-----------------------------------------------------------------------------

TPalette *PaletteViewer::getPalette() {
  if (!m_paletteHandle) return 0;
  return m_paletteHandle->getPalette();
}

//-----------------------------------------------------------------------------

void PaletteViewer::updateView() {
  changeWindowTitle();
  setPageView(0);
  clearStyleSelection();
  updateTabBar();
  updatePaletteToolBar();
  updateSavePaletteToolBar();
}

//-----------------------------------------------------------------------------

void PaletteViewer::enableSaveAction(bool enable) {
  if (!m_savePaletteToolBar) return;
  QList<QAction *> actions;
  actions               = m_savePaletteToolBar->actions();
  enable                = !getPalette() ? false : enable;
  m_isSaveActionEnabled = enable;
  int i;
  for (i = 0; i < actions.count() - 1; i++) {
    QAction *act = actions[i];
    if (act->text() == tr("&Save Palette As") ||
        act->text() == tr("&Save Palette"))
      act->setEnabled(enable);
  }
}

//-----------------------------------------------------------------------------
/*! Create tab bar to select palette page.
*/
void PaletteViewer::createTabBar() {
  m_pagesBar = new PaletteTabBar(this, m_hasPageCommand);

  connect(m_pagesBar, SIGNAL(tabTextChanged(int)), this,
          SLOT(onTabTextChanged(int)));

  if (!getPalette()) return;

  updateTabBar();
}

//-----------------------------------------------------------------------------
/*! Create right part of button bar.
*/
void PaletteViewer::createPaletteToolBar() {
  m_paletteToolBar->clear();
  m_paletteToolBar->setMovable(false);
  m_paletteToolBar->setIconSize(QSize(23, 20));
  m_paletteToolBar->setLayoutDirection(Qt::RightToLeft);

  // Lock button to avoid editing the palette by mistake
  if (m_viewType == LEVEL_PALETTE) {
    QIcon lockIcon = createQIconOnOff("lockpalette");

    m_lockPaletteToolButton = new QToolButton(this);
    m_lockPaletteToolButton->setIcon(lockIcon);
    m_lockPaletteToolButton->setCheckable(true);
    m_lockPaletteToolButton->setObjectName("PaletteLockButton");
    m_lockPaletteToolButton->setToolTip(tr("Lock Palette"));
    if (getPalette()) {
      m_lockPaletteToolButton->setChecked(getPalette()->isLocked());
    }

    connect(m_lockPaletteToolButton, SIGNAL(clicked(bool)), this,
            SLOT(setIsLocked(bool)));

    m_paletteToolBar->addWidget(m_lockPaletteToolButton);

  } else if (m_viewType == STUDIO_PALETTE) {
    QToolButton *toolButton = new QToolButton(this);
    toolButton->setPopupMode(QToolButton::InstantPopup);

    QIcon lockIcon = createQIconOnOff("lockpalette");
    toolButton->setIcon(lockIcon);

    toolButton->setObjectName("PaletteLockButton");
    toolButton->setToolTip(tr("Lock Palette"));
    toolButton->setCheckable(true);

    QMenu *lockMenu     = new QMenu(toolButton);
    m_lockPaletteAction = new QAction(tr("&Lock Palette"), toolButton);
    m_lockPaletteAction->setCheckable(true);
    lockMenu->addAction(m_lockPaletteAction);
    toolButton->setMenu(lockMenu);
    if (getPalette()) {
      m_lockPaletteAction->setChecked(getPalette()->isLocked());
    }

    connect(m_lockPaletteAction, SIGNAL(triggered(bool)), this,
            SLOT(setIsLocked(bool)));
    connect(m_lockPaletteAction, SIGNAL(toggled(bool)), toolButton,
            SLOT(setChecked(bool)));

    m_paletteToolBar->addWidget(toolButton);
  }

  // Attenzione: alcune modifiche sono state fatte a livello di stylesheet
  QToolButton *viewModeButton = new QToolButton(this);
  viewModeButton->setPopupMode(QToolButton::InstantPopup);

  QIcon viewModeIcon = createQIcon("options");
  viewModeButton->setIcon(viewModeIcon);
  QMenu *viewMode = new QMenu(QString("Options"), viewModeButton);
  viewMode->setToolTip(tr("Options"));

  QActionGroup *viewModeGroup = new QActionGroup(viewMode);
  connect(viewModeGroup, SIGNAL(triggered(QAction *)), this,
          SLOT(onViewMode(QAction *)));

  QAction *smallThumbAct =
      new QAction(tr("&Small Thumbnails View"), viewModeButton);
  smallThumbAct->setData(PageViewer::SmallChips);
  QAction *mediumThumbAct =
      new QAction(tr("&Medium Thumbnails View"), viewModeButton);
  mediumThumbAct->setData(PageViewer::MediumChips);
  QAction *largeThumbAct =
      new QAction(tr("&Large Thumbnails View"), viewModeButton);
  largeThumbAct->setData(PageViewer::LargeChips);

  QAction *listAct = new QAction(tr("&List View"), viewModeButton);
  listAct->setData(PageViewer::List);

  viewModeGroup->addAction(smallThumbAct);
  viewModeGroup->addAction(mediumThumbAct);
  viewModeGroup->addAction(largeThumbAct);
  viewModeGroup->addAction(listAct);

  QAction *styleDisplayAct = new QAction(tr("Style Name"), viewModeButton);
  styleDisplayAct->setData(PageViewer::Style);
  QAction *originalDisplayAct =
      new QAction(tr("StudioPalette Name"), viewModeButton);
  originalDisplayAct->setData(PageViewer::Original);
  QAction *bothDisplayAct = new QAction(tr("Both Names"), viewModeButton);
  bothDisplayAct->setData(PageViewer::StyleAndOriginal);

  QActionGroup *nameDisplayModeGroup = new QActionGroup(viewMode);
  connect(nameDisplayModeGroup, SIGNAL(triggered(QAction *)), this,
          SLOT(onNameDisplayMode(QAction *)));
  nameDisplayModeGroup->addAction(styleDisplayAct);
  nameDisplayModeGroup->addAction(originalDisplayAct);
  nameDisplayModeGroup->addAction(bothDisplayAct);

  viewMode->addAction(smallThumbAct);
  viewMode->addAction(mediumThumbAct);
  viewMode->addAction(largeThumbAct);
  viewMode->addAction(listAct);
  viewMode->addSeparator();
  viewMode->addAction(styleDisplayAct);
  viewMode->addAction(originalDisplayAct);
  viewMode->addAction(bothDisplayAct);

  viewModeButton->setMenu(viewMode);

  // Attenzione: avendo invertito la direzione devo aggiungere gli oggetti al
  // contrario

  m_paletteToolBar->addWidget(viewModeButton);
  m_paletteToolBar->addSeparator();

  if (m_hasPageCommand) {
    QAction *addPage;
    QIcon addPageIcon = createQIcon("newpage");
    addPage = new QAction(addPageIcon, tr("&New Page"), m_paletteToolBar);
    connect(addPage, SIGNAL(triggered()), this, SLOT(addNewPage()));

    m_paletteToolBar->addAction(addPage);
  }

  QIcon newColorIcon = createQIcon("newstyle");
  QAction *addColor =
      new QAction(newColorIcon, tr("&New Style"), m_paletteToolBar);
  connect(addColor, SIGNAL(triggered()), this, SLOT(addNewColor()));

  m_paletteToolBar->addAction(addColor);
  m_paletteToolBar->addSeparator();

  // KeyFrame button
  if (m_viewType != CLEANUP_PALETTE) {
    m_keyFrameButton = new PaletteKeyframeNavigator(m_paletteToolBar);
    m_paletteToolBar->addWidget(m_keyFrameButton);
    m_paletteToolBar->addSeparator();
    m_keyFrameButton->setSelection(m_pageViewer->getSelection());
  }
  updatePaletteToolBar();
}

//-----------------------------------------------------------------------------
/*! Create left part of button bar; insert different actions in according to
                current viewer palette type.
                */
void PaletteViewer::createSavePaletteToolBar() {
  m_savePaletteToolBar->clear();
  m_savePaletteToolBar->setMovable(false);
  m_savePaletteToolBar->setIconSize(QSize(22, 20));

  if (!m_hasSavePaletteToolbar || m_viewType == CLEANUP_PALETTE) {
    m_savePaletteToolBar->hide();
    return;
  }

  // save palette as
  QIcon saveAsPaletteIcon = createQIconOnOff("savepaletteas", false);
  QAction *saveAsPalette  = new QAction(
      saveAsPaletteIcon, tr("&Save Palette As"), m_savePaletteToolBar);
  // overwrite palette
  QIcon savePaletteIcon = createQIconOnOff("savepalette", false);
  QAction *savePalette =
      new QAction(savePaletteIcon, tr("&Save Palette"), m_savePaletteToolBar);

  if (m_viewType == STUDIO_PALETTE) {
    connect(savePalette, SIGNAL(triggered()), this, SLOT(saveStudioPalette()));
    m_savePaletteToolBar->addAction(savePalette);
  } else if (m_viewType == LEVEL_PALETTE) {
    // save load palette
    PaletteIconWidget *movePalette =
        new PaletteIconWidget(m_savePaletteToolBar);
    connect(movePalette, SIGNAL(startDrag()), this, SLOT(startDragDrop()));

    QAction *act = m_savePaletteToolBar->addWidget(movePalette);
    act->setText(tr("&Move Palette"));
    m_savePaletteToolBar->addSeparator();

    // save palette as
    connect(saveAsPalette, SIGNAL(triggered()),
            CommandManager::instance()->getAction("MI_SavePaletteAs"),
            SIGNAL(triggered()));
    m_savePaletteToolBar->addAction(saveAsPalette);

    // overwrite palette
    connect(savePalette, SIGNAL(triggered()),
            CommandManager::instance()->getAction("MI_OverwritePalette"),
            SIGNAL(triggered()));
    m_savePaletteToolBar->addAction(savePalette);
  }

  updateSavePaletteToolBar();
}

//-----------------------------------------------------------------------------
/*! Update page tab bar adding or removing tab in accord with viewer palette.
*/
void PaletteViewer::updateTabBar() {
  int tabCount = m_pagesBar->count();
  int i;

  // Se ci sono tab li butto
  for (i = tabCount - 1; i >= 0; i--) m_pagesBar->removeTab(i);

  TPalette *palette = getPalette();
  if (!palette) return;

  QIcon tabIcon(":Resources/palette_tabicon.png");
  m_pagesBar->setIconSize(QSize(20, 15));

  // Aggiungo i tab in funzione delle pagine di m_palette
  for (i = 0; i < palette->getPageCount(); i++) {
    TPalette::Page *page = palette->getPage(i);
    std::wstring ws      = page->getName();
    QString pageName     = QString::fromStdWString(ws);
    m_pagesBar->addTab(tabIcon, pageName);
  }
  m_pagesBar->update();
}

//-----------------------------------------------------------------------------
/*! Update right button bar, enable its action if current viewer palette is
 * empty.
*/
void PaletteViewer::updatePaletteToolBar() {
  if (!m_paletteToolBar) return;
  QList<QAction *> actions;
  actions                = m_paletteToolBar->actions();
  TPalette *palette      = getPalette();
  bool enable            = !palette ? false : true;
  bool enableNewStyleAct = enable;
  // limit the number of cleanup styles to 7
  if (palette && palette->isCleanupPalette())
    enableNewStyleAct = (palette->getStyleInPagesCount() < 8);
  if (m_viewType != CLEANUP_PALETTE) m_keyFrameButton->setEnabled(enable);
  int i;
  for (i = 0; i < actions.count(); i++) {
    QAction *act = actions[i];
    if (act->text() == tr("&New Style")) {
      act->setEnabled(enableNewStyleAct);
      continue;
    }
    act->setEnabled(enable);
  }
}

//-----------------------------------------------------------------------------
/*! Update left button bar, enable its action if current viewer palette is
 * empty.
*/
void PaletteViewer::updateSavePaletteToolBar() {
  if (!m_savePaletteToolBar) return;
  QList<QAction *> actions;
  actions     = m_savePaletteToolBar->actions();
  bool enable = !getPalette() ? false : true;
  int i;
  for (i = 0; i < actions.count(); i++) {
    QAction *act = actions[i];
    if (act->text() == tr("&Save Palette As") ||
        act->text() == tr("&Save Palette") ||
        act->text() == tr("&Palette Gizmo"))
      act->setEnabled(enable);
    else if (m_viewType != STUDIO_PALETTE && i == 0)  // move action
      actions[i]->setVisible(enable);
    else
      actions[i]->setEnabled(false);
  }
}

//-----------------------------------------------------------------------------
/*! Resize the widget and its child.
*/
void PaletteViewer::resizeEvent(QResizeEvent *event) {
  QWidget::resizeEvent(event);
  if (m_pageViewer) m_pageViewer->computeSize();
  if (m_pagesBar) m_pagesBar->setMaximumWidth(width() - 12);
}

//-----------------------------------------------------------------------------

void PaletteViewer::setChangeStyleCommand(
    ChangeStyleCommand *changeStyleCommand) {
  if (m_changeStyleCommand) delete m_changeStyleCommand;
  m_changeStyleCommand = changeStyleCommand;
  m_pageViewer->setChangeStyleCommand(m_changeStyleCommand);
}

//-----------------------------------------------------------------------------
/*! Create and open the Right-click menu.
*/
void PaletteViewer::contextMenuEvent(QContextMenuEvent *event) {
  m_indexPageToDelete = -1;
  QPoint pos          = event->pos();
  if (!getPalette() || !m_tabBarContainer->geometry().contains(pos)) return;

  QMenu *menu = new QMenu(this);
  if (m_hasPageCommand) {
    QAction *newPage = menu->addAction(tr("New Page"));
    connect(newPage, SIGNAL(triggered()), SLOT(addNewPage()));

    if (m_pagesBar->geometry().contains(pos)) {
      int tabIndex         = m_pagesBar->tabAt(pos);
      TPalette::Page *page = getPalette()->getPage(tabIndex);
      if (page) {
        bool canRemovePage = true;
        if (page->getStyleId(0) == 0 || page->getStyleId(1) == 1)
          canRemovePage = false;
        if (canRemovePage) {
          m_indexPageToDelete = tabIndex;
          QAction *deletePage = menu->addAction(tr("Delete Page"));
          connect(deletePage, SIGNAL(triggered()), SLOT(deletePage()));
        }
      }
    }
  }

  if (m_viewType == LEVEL_PALETTE && m_isSaveActionEnabled) {
    menu->addSeparator();
    menu->addAction(
        CommandManager::instance()->getAction("MI_OverwritePalette"));
    menu->addAction(CommandManager::instance()->getAction("MI_SavePaletteAs"));
  }

  menu->exec(event->globalPos());
}

//-----------------------------------------------------------------------------

void PaletteViewer::showEvent(QShowEvent *) {
  onPaletteSwitched();
  changeWindowTitle();

  if (!m_paletteHandle) return;

  connect(m_paletteHandle, SIGNAL(paletteSwitched()), this,
          SLOT(onPaletteSwitched()));
  connect(m_paletteHandle, SIGNAL(paletteChanged()), this,
          SLOT(onPaletteChanged()));
  connect(m_paletteHandle, SIGNAL(paletteTitleChanged()), this,
          SLOT(changeWindowTitle()));
  connect(m_paletteHandle, SIGNAL(colorStyleSwitched()), this,
          SLOT(onColorStyleSwitched()));
  connect(m_paletteHandle, SIGNAL(colorStyleChanged()), this,
          SLOT(changeWindowTitle()));
  connect(m_paletteHandle, SIGNAL(paletteDirtyFlagChanged()), this,
          SLOT(changeWindowTitle()));

  if (!m_frameHandle) return;
  // Connessione necessaria per aggiornare lo stile in caso di palette animate.
  connect(m_frameHandle, SIGNAL(frameSwitched()), this,
          SLOT(onFrameSwitched()));
}

//-----------------------------------------------------------------------------

void PaletteViewer::hideEvent(QHideEvent *) {
  disconnect(m_paletteHandle, SIGNAL(paletteSwitched()), this,
             SLOT(onPaletteSwitched()));
  disconnect(m_paletteHandle, SIGNAL(paletteChanged()), this,
             SLOT(onPaletteChanged()));
  disconnect(m_paletteHandle, SIGNAL(paletteTitleChanged()), this,
             SLOT(changeWindowTitle()));
  disconnect(m_paletteHandle, SIGNAL(colorStyleSwitched()), this,
             SLOT(onColorStyleSwitched()));
  disconnect(m_paletteHandle, SIGNAL(colorStyleChanged()), this,
             SLOT(changeWindowTitle()));
  disconnect(m_paletteHandle, SIGNAL(paletteDirtyFlagChanged()), this,
             SLOT(changeWindowTitle()));

  if (!m_frameHandle) return;
  disconnect(m_frameHandle, SIGNAL(frameSwitched()), this,
             SLOT(onFrameSwitched()));
}

//-----------------------------------------------------------------------------
/*! If currente palette viewer exist verify event data, if is a PaletteData or
                has urls accept event.
                */
void PaletteViewer::dragEnterEvent(QDragEnterEvent *event) {
  TPalette *palette = getPalette();
  if (!palette || m_viewType == CLEANUP_PALETTE) return;

  const QMimeData *mimeData      = event->mimeData();
  const PaletteData *paletteData = dynamic_cast<const PaletteData *>(mimeData);

  if (paletteData) {
    // Sto "draggando" stili.
    if (paletteData->hasStyleIndeces()) {
      m_pageViewer->createDropPage();
      if (!palette) m_pagesBar->setCurrentIndex(palette->getPageCount() - 1);
    }
    // Accetto l'evento
    event->acceptProposedAction();
    return;
  }

  if (!acceptResourceDrop(mimeData->urls())) return;
  QList<QUrl> urls = mimeData->urls();
  int count        = urls.size();
  if (count == 0) return;
  // Accetto l'evento solo se ho tutte palette.
  int i;
  for (i = 0; i < count; i++) {
    TFilePath path(urls[i].toLocalFile().toStdWString());
    if (!path.getType().empty() && path.getType() != "tpl") return;
  }

  event->acceptProposedAction();
}

//-----------------------------------------------------------------------------
/*! Execute drop event.
*/
void PaletteViewer::dropEvent(QDropEvent *event) {
  if (m_viewType == CLEANUP_PALETTE) return;
  const QMimeData *mimeData = event->mimeData();

  QPoint tollBarPos      = m_savePaletteToolBar->mapFrom(this, event->pos());
  QAction *currentAction = m_savePaletteToolBar->actionAt(tollBarPos);
  bool loadPalette =
      currentAction && currentAction->text() == QString(tr("&Move Palette"));

  // ho i path delle palette
  if (mimeData->hasUrls()) {
    QList<QUrl> urls = mimeData->urls();
    int count        = urls.size();
    if (count == 0) return;

    int i;
    for (i = 0; i < count; i++) {
      TFilePath path(urls[i].toLocalFile().toStdWString());
      if (!path.getType().empty() && path.getType() != "tpl") return;
      if (loadPalette && i == 0) {
        if (m_xsheetHandle) {
          TPalette *newPalette =
              StudioPalette::instance()->getPalette(path, false);
          if (!newPalette) return;
          int ret = DVGui::eraseStylesInDemand(getPalette(), m_xsheetHandle,
                                               newPalette);
          if (ret == 0) return;
        }
        StudioPaletteCmd::loadIntoCurrentPalette(m_paletteHandle, path);
      } else
        StudioPaletteCmd::mergeIntoCurrentPalette(m_paletteHandle, path);

      if (loadPalette) {
        TFilePath refImagePath =
            StudioPalette::instance()->getPalette(path, true)->getRefImgPath();
        if (!refImagePath.isEmpty() &&
            getPalette()->getRefImgPath().isEmpty()) {
          getPalette()->setRefImgPath(refImagePath);
          m_paletteHandle->notifyPaletteChanged();
        }
      }
    }
    event->acceptProposedAction();
    return;
  }

  const PaletteData *paletteData = dynamic_cast<const PaletteData *>(mimeData);

  if (!paletteData) return;
  // Sto inserendo stili
  if (paletteData->hasStyleIndeces()) {
    m_pageViewer->drop(-1, mimeData);
    event->acceptProposedAction();
  } else {
    // Ho la palette da inserire
    TPalette *palette = paletteData->getPalette();
    if (getPalette() == palette) return;
    if (loadPalette) {
      if (m_xsheetHandle) {
        int ret =
            DVGui::eraseStylesInDemand(getPalette(), m_xsheetHandle, palette);
        if (ret == 0) return;
      }
      StudioPaletteCmd::loadIntoCurrentPalette(m_paletteHandle, palette);
    } else
      StudioPaletteCmd::mergeIntoCurrentPalette(m_paletteHandle, palette);
  }
}

//-----------------------------------------------------------------------------
/*! Start drag and drop; if current page exist set drag and drop event data.
*/
void PaletteViewer::startDragDrop() {
  TRepetitionGuard guard;
  if (!guard.hasLock()) return;

  if (m_viewType == CLEANUP_PALETTE) return;

  assert(m_viewType != STUDIO_PALETTE && m_viewType != CLEANUP_PALETTE);

  TPalette *palette = getPalette();
  if (!palette) return;

  QDrag *drag              = new QDrag(this);
  PaletteData *paletteData = new PaletteData();
  paletteData->setPalette(palette);
  drag->setMimeData(paletteData);

  Qt::DropAction dropAction = drag->exec(Qt::CopyAction | Qt::MoveAction);
}

//-----------------------------------------------------------------------------

void PaletteViewer::clearStyleSelection() { m_pageViewer->clearSelection(); }

//-----------------------------------------------------------------------------
/*! Set current view page to \b currentIndexPage
*/
void PaletteViewer::setPageView(int currentIndexPage) {
  TPalette *palette    = getPalette();
  TPalette::Page *page = palette ? palette->getPage(currentIndexPage) : 0;
  m_pageViewer->setPage(page);
}

//-----------------------------------------------------------------------------
/*! If current palette viewer is not empty create emit a signal to create new
                palette page.
                */
void PaletteViewer::addNewPage() {
  TPalette *palette = getPalette();
  if (palette) {
    if (palette->isLocked()) return;

    updateTabBar();
    PaletteCmd::addPage(m_paletteHandle);
  }
}

//-----------------------------------------------------------------------------
/*! Create a new style in current page view of current palette viewer emit a
   signal
                to create a new style.
                */
void PaletteViewer::addNewColor() {
  if (!getPalette() || getPalette()->isLocked()) return;

  TPalette::Page *page = m_pageViewer->getPage();
  update();
  PaletteCmd::createStyle(m_paletteHandle, page);
  m_pageViewer->computeSize();
  if (m_viewType == CLEANUP_PALETTE) updatePaletteToolBar();
}

//-----------------------------------------------------------------------------
/*! Emit a signal to delete a page of current palette viewer.
*/
void PaletteViewer::deletePage() {
  TPalette *palette = getPalette();
  if (!palette || palette->isLocked()) return;

  if (m_xsheetHandle) {
    std::vector<int> styleIds;
    TPalette::Page *page = palette->getPage(m_indexPageToDelete);
    if (!page) return;  // La pagina dovrebbe esserci sempre
    int i;
    for (i = 0; i < page->getStyleCount(); i++)
      styleIds.push_back(page->getStyleId(i));

    int ret = DVGui::eraseStylesInDemand(palette, styleIds, m_xsheetHandle);
    if (ret == 0) return;
  }

  PaletteCmd::destroyPage(m_paletteHandle, m_indexPageToDelete);
  updateTabBar();

  palette->setDirtyFlag(true);
  if (m_viewType == CLEANUP_PALETTE) updatePaletteToolBar();
}

//-----------------------------------------------------------------------------
/*! If current palette view is studio palette and palette has a global name
                save current viewer palette in studio palette.
                */
void PaletteViewer::saveStudioPalette() {
  StudioPalette *sp = StudioPalette::instance();
  TPalette *palette = getPalette();
  if (!palette) {
    DVGui::warning("No current palette");
    return;
  }
  std::wstring gname = palette->getGlobalName();
  if (gname.empty()) {
    StudioPaletteViewer *parentSPV =
        qobject_cast<StudioPaletteViewer *>(parentWidget());
    if (!parentSPV) {
      DVGui::warning("No GlobalName");
      return;
    } else {
      TFilePath palettePath = parentSPV->getCurrentItemPath();
      if (palettePath.isEmpty())
        DVGui::warning("No GlobalName, No Filepath");
      else {
        QString question;
        question = "Do you want to overwrite current palette to " +
                   toQString(palettePath) + " ?";
        int ret = DVGui::MsgBox(question, QObject::tr("Overwrite"),
                                QObject::tr("Don't Overwrite"), 0);
        if (ret == 2 || ret == 0) return;
        StudioPalette::instance()->save(palettePath, palette);
        palette->setDirtyFlag(false);
      }
    }
    return;
  }

  TFilePath fp = sp->getPalettePath(gname);
  if (fp != TFilePath()) {
    QString question;
    question = "Do you want to overwrite current studio palette to " +
               toQString(fp) + " ?";
    int ret =
        DVGui::MsgBox(question, tr("Overwrite"), tr("Don't Overwrite"), 0);
    if (ret == 2 || ret == 0) return;
    sp->setPalette(fp, getPalette(), false);

    StudioPaletteCmd::updateAllLinkedStyles(m_paletteHandle, m_xsheetHandle);

    palette->setDirtyFlag(false);
  }

  m_paletteHandle->notifyPaletteChanged();
}

//-----------------------------------------------------------------------------
/*! If current color switched update current page view.
*/
void PaletteViewer::onColorStyleSwitched() {
  TPalette *palette = getPalette();

  // se non c'e' palette, pageviewer p pagina corrente esco (non dovrebbe
  // succedere mai)
  if (!palette || !m_pageViewer) return;
  int styleIndex = m_paletteHandle->getStyleIndex();

  setPageView(m_pagesBar->currentIndex());

  TPalette::Page *page = m_pageViewer->getPage();
  if (!page) return;

  // faccio in modo che la pagina che contiene il colore selezionato diventi
  // corrente
  int indexInPage = page->search(styleIndex);
  if (indexInPage == -1) {
    if (!palette->getStylePage(styleIndex)) return;
    int pageIndex = palette->getStylePage(styleIndex)->getIndex();
    m_pagesBar->setCurrentIndex(pageIndex);
    indexInPage = m_pageViewer->getPage()->search(styleIndex);
  }

  QRect colorStyleRect = m_pageViewer->getItemRect(indexInPage);
  m_pageViewerScrollArea->ensureVisible(colorStyleRect.center().x(),
                                        colorStyleRect.center().y(),
                                        colorStyleRect.size().width() / 2 + 4,
                                        colorStyleRect.size().height() / 2 + 4);
  m_pageViewer->update();
}

//-----------------------------------------------------------------------------
/*! Update view. Remember current page bar index.
*/
void PaletteViewer::onPaletteChanged() {
  int index = m_pagesBar->currentIndex();
  updateTabBar();
  m_pagesBar->setCurrentIndex(index);

  m_pageViewer->update();

  if (m_viewType == CLEANUP_PALETTE) updatePaletteToolBar();

  changeWindowTitle();
}

//-----------------------------------------------------------------------------

void PaletteViewer::onPaletteSwitched() {
  updateView();

  // update GUI according to the "lock" property
  if (getPalette() && m_viewType != CLEANUP_PALETTE &&
      (m_lockPaletteAction || m_lockPaletteToolButton)) {
    if (m_lockPaletteAction) {
      m_lockPaletteAction->setEnabled(true);
      m_lockPaletteAction->setChecked(getPalette()->isLocked());
    } else if (m_lockPaletteToolButton) {
      m_lockPaletteToolButton->setEnabled(true);
      m_lockPaletteToolButton->setChecked(getPalette()->isLocked());
    }
    // update commands
    m_pageViewer->updateCommandLocks();
  } else {
    if (m_lockPaletteAction)
      m_lockPaletteAction->setEnabled(false);
    else if (m_lockPaletteToolButton)
      m_lockPaletteToolButton->setEnabled(false);
  }
}

//-----------------------------------------------------------------------------

void PaletteViewer::onFrameSwitched() {
  TPalette *palette = getPalette();
  if (!palette) return;
  palette->setFrame(m_frameHandle->getFrameIndex());
  m_pageViewer->update();
}

//-----------------------------------------------------------------------------
/*! Set a new name to palette page of index \b tabIndex.
*/
void PaletteViewer::onTabTextChanged(int tabIndex) {
  if (!m_paletteHandle) return;
  QString newName = m_pagesBar->tabText(tabIndex);
  PaletteCmd::renamePalettePage(m_paletteHandle, tabIndex,
                                newName.toStdWString());
}

//-----------------------------------------------------------------------------
/*! Change page style view mode.
*/
void PaletteViewer::onViewMode(QAction *action) {
  int viewMode = action->data().toInt();
  m_pageViewer->setViewMode((PageViewer::ViewMode)viewMode);
}

//-----------------------------------------------------------------------------
/*!  Change name display mode on the style chips
*/
void PaletteViewer::onNameDisplayMode(QAction *action) {
  int nameDisplayMode = action->data().toInt();
  m_pageViewer->setNameDisplayMode(
      (PageViewer::NameDisplayMode)nameDisplayMode);
}

//-----------------------------------------------------------------------------
/*! If current view type is LEVEL_PALETTE add to window title current level
                name and current frame.
                */
void PaletteViewer::changeWindowTitle() {
  QString name = tr("Palette");
  QWidget *titleOwner;
  TPalette *palette = getPalette();
  if (m_viewType == LEVEL_PALETTE) {
    name = tr("Level Palette: ");
    if (palette) {
      name = name + QString::fromStdWString(palette->getPaletteName());
      if (palette->getDirtyFlag()) name += QString(" *");
    }
    titleOwner = parentWidget();
  } else if (m_viewType == CLEANUP_PALETTE) {
    name       = tr("Cleanup Palette");
    titleOwner = parentWidget();
  } else if (m_viewType == STUDIO_PALETTE) {
    name = QString();
    if (palette) {
      if (palette->getDirtyFlag()) {
        name = QString("* ");
      }
      name = name + QString::fromStdWString(palette->getPaletteName()) +
             QString(" : ");
    }
    name += tr("Studio Palette");
    titleOwner = parentWidget()->parentWidget();
  }

  // add color model name, if exists
  TFilePath refImagePath = (palette) ? palette->getRefImgPath() : TFilePath();
  if (!refImagePath.isEmpty()) {
    QString cmName = tr("     (Color Model: ") +
                     QString::fromStdWString(refImagePath.getWideName()) +
                     tr(")");
    name += cmName;
  }

  titleOwner->setWindowTitle(name);
}

//-----------------------------------------------------------------------------
/*! Move palette view page from \b srcIndex page index to \b dstIndex page
 * index.
*/
void PaletteViewer::movePage(int srcIndex, int dstIndex) {
  PaletteCmd::movePalettePage(m_paletteHandle, srcIndex, dstIndex);
  m_pagesBar->setCurrentIndex(dstIndex);
}

//-----------------------------------------------------------------------------
/*! Process when the lock button toggled
*/
void PaletteViewer::setIsLocked(bool lock) {
  if (m_viewType == CLEANUP_PALETTE) return;

  getPalette()->setIsLocked(lock);
  getPalette()->setDirtyFlag(true);
  m_pageViewer->updateCommandLocks();
  // notify for updating the style editor
  m_paletteHandle->notifyPaletteLockChanged();
}