// TnzLib includes

#include "toonz/tframehandle.h"

// TnzQt includes

#include "toonzqt/gutil.h"

// Qt includes

#include <qaction></qaction>

#include "toonzqt/framenavigator.h"

using namespace DVGui;

//=============================================================================

// FrameNavigator

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

FrameNavigator::FrameNavigator(QWidget *parent)

    : QToolBar(parent), m_frame(0), m_lineEdit(0), m_frameHandle(0) {

  setMaximumWidth(130);

  QAction *prevButton =

      new QAction(createQIconPNG("frameprev"), tr("Previous Frame"), this);

  connect(prevButton, SIGNAL(triggered()), this, SLOT(prevFrame()));

  addAction(prevButton);

  m_lineEdit = new DVGui::IntLineEdit(this);

  m_lineEdit->setFixedHeight(16);

  bool ret = connect(m_lineEdit, SIGNAL(editingFinished()), this,

                     SLOT(onEditingFinished()));

  addWidget(m_lineEdit);

  QAction *nextButton =

      new QAction(createQIconPNG("framenext"), tr("Next Frame"), this);

  ret =

      ret && connect(nextButton, SIGNAL(triggered()), this, SLOT(nextFrame()));

  addAction(nextButton);

  assert(ret);

}

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

bool FrameNavigator::anyWidgetHasFocus() {

  return hasFocus() || m_lineEdit->hasFocus() || m_lineEdit->hasFocus();

}

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

void FrameNavigator::setFrameHandle(TFrameHandle *fh) {

  if (fh == m_frameHandle) return;

  if (isVisible() && m_frameHandle)

    disconnect(m_frameHandle, SIGNAL(frameSwitched()), this,

               SLOT(onFrameSwitched()));

  m_frameHandle = fh;

  if (m_frameHandle) {

    if (isVisible())

      connect(m_frameHandle, SIGNAL(frameSwitched()), this,

              SLOT(onFrameSwitched()));

    updateFrame(m_frameHandle->getFrame());

  }

}

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

void FrameNavigator::updateFrame(int frame) {

  m_frame = frame;

  m_lineEdit->setValue(m_frame + 1);

}

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

void FrameNavigator::setFrame(int frame, bool notifyFrameHandler) {

  if (m_frame == frame) return;

  updateFrame(frame);

  if (m_frameHandle && notifyFrameHandler) m_frameHandle->setFrame(frame);

  if (notifyFrameHandler) emit frameSwitched();

}

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

void FrameNavigator::onEditingFinished() {

  setFrame(m_lineEdit->getValue() - 1, true);

}

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

void FrameNavigator::onFrameSwitched() {

  if (m_frameHandle) updateFrame(m_frameHandle->getFrame());

}

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

void FrameNavigator::showEvent(QShowEvent *) {

  onFrameSwitched();

  if (m_frameHandle)

    connect(m_frameHandle, SIGNAL(frameSwitched()), this,

            SLOT(onFrameSwitched()));

}

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

void FrameNavigator::hideEvent(QHideEvent *) {

  if (m_frameHandle)

    disconnect(m_frameHandle, SIGNAL(frameSwitched()), this,

               SLOT(onFrameSwitched()));

}