cxDataViewSelectionWidget.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, 
   this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, 
   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors 
   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
=========================================================================*/
#include <cxDataViewSelectionWidget.h>
#include "cxToolListWidget.h"
#include "cxData.h"
#include <QListWidgetItem>
#include <QDir>
#include <QHBoxLayout>
#include <QDropEvent>
#include <QMimeData>
#include <QAction>
#include <QLabel>
#include <QMenu>
#include "cxEnumConverter.h"
#include "cxLogger.h"
#include "cxImageAlgorithms.h"
#include "cxImage.h"
#include "cxPatientModelService.h"
#include "cxViewService.h"
#include "cxViewGroupData.h"
#include "cxLogger.h"


//TODO: remove
#include "cxLegacySingletons.h"

namespace cx
{

DataListWidget::DataListWidget(QWidget* parent) :
    QListWidget(parent)
{
//  connect(this, SIGNAL(itemClicked(QListWidgetItem*)), this, SLOT(toolClickedSlot(QListWidgetItem*)));

  this->setSelectionBehavior(QAbstractItemView::SelectItems);
  this->setSelectionMode(QAbstractItemView::SingleSelection);

  connect(this, SIGNAL(itemSelectionChanged()), this, SLOT(itemSelectionChangedSlot()));

//  this->setMinimumSize(QSize(20, 20));
  this->setSizePolicy(QSizePolicy::Expanding, this->sizePolicy().verticalPolicy());

}

QSize DataListWidget::sizeHint() const
{
        return QSize(80,20);
}

//QSize DataListWidget::minimumSizeHint () const
//{
//      return QSize(20,20);
//}

DataListWidget::~DataListWidget()
{}

void DataListWidget::populate(QStringList dataUids)
{
  this->clear();

  foreach(QString data, dataUids)
  {
    this->populateData(data);
  }
  emit listSizeChanged();
}

void DataListWidget::itemSelectionChangedSlot()
{
  QList<QListWidgetItem*> items = this->selectedItems();
  if (items.empty())
    return;
  ImagePtr image = patientService()->getData<Image>(items[0]->data(Qt::UserRole).toString());
  if (image)
        patientService()->setActiveImage(image);

}

void DataListWidget::populateData(QString uid, bool indent, QListWidgetItem* after)
{
  DataPtr data = patientService()->getData(uid);
  if (!data)
    return;

  QListWidgetItem* item = new QListWidgetItem(data->getName());
  item->setData(Qt::UserRole, uid);

  if (indent)
    item->setText("    " + item->text());

  if (boost::dynamic_pointer_cast<Image>(data))
    item->setIcon(QIcon(":/icons/volume.png"));
  else
    item->setIcon(QIcon(":/icons/surface.png"));

  if (after)
  {
    std::cout << "set " << item->text() << " before: " << after->text() << " " << this->currentRow() << std::endl;
    this->setCurrentItem(after);
    this->insertItem(this->currentRow(), item);
    this->setCurrentItem(item);
  }
  else
  {
    this->addItem(item);
  }

  item->setToolTip(item->text());

  emit listSizeChanged();
}

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


AllDataListWidget::AllDataListWidget(QWidget* parent) :
    DataListWidget(parent)
{
  this->setDropIndicatorShown(false);
  this->setDragEnabled(true);

  connect(patientService().get(), SIGNAL(dataAddedOrRemoved()), this, SLOT(populateAllDataList()));
}

AllDataListWidget::~AllDataListWidget()
{}

void AllDataListWidget::mousePressEvent(QMouseEvent *event)
{
  QListWidget::mousePressEvent(event);
}

void AllDataListWidget::mouseMoveEvent(QMouseEvent *event)
{
  QListWidget::mouseMoveEvent(event);
}

void AllDataListWidget::populateAllDataList()
{
  this->clear();

  //add actions to the actiongroups and the contextmenu
  std::vector<DataPtr> sorted = sortOnGroupsAndAcquisitionTime(patientService()->getData());
  QString lastDataActionUid = "________________________";
  for (std::vector<DataPtr>::iterator iter=sorted.begin(); iter!=sorted.end(); ++iter)
  {
    QString uid = (*iter)->getUid();

    if (uid.contains(lastDataActionUid))
    {
      this->populateData(uid, true);
    }
    else
    {
      this->populateData(uid, false);
      lastDataActionUid = uid;
    }

  }

  emit listSizeChanged();
}


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



SelectedDataListWidget::SelectedDataListWidget(QWidget* parent) :
    DataListWidget(parent)
{
  this->setContextMenuPolicy(Qt::CustomContextMenu);

  this->setDropIndicatorShown(true);
  this->setDragEnabled(true);
  this->setAcceptDrops(true);
  this->viewport()->setAcceptDrops(true);
  this->setDragDropOverwriteMode(true);

  connect(this, SIGNAL(userChangedList()), this, SLOT(userChangedListSlot()));
  connect(this, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(contextMenuSlot(const QPoint &)));
}


SelectedDataListWidget::~SelectedDataListWidget()
{}



void SelectedDataListWidget::userChangedListSlot()
{
  QStringList data = this->getData();
  std::reverse(data.begin(), data.end());

  mViewGroupData->clearData();
  for (int i=0; i<data.size(); ++i)
  {
        DataPtr current = patientService()->getData(data[i]);
    if (!current)
      continue;
        mViewGroupData->addData(current->getUid());
  }
}

void SelectedDataListWidget::keyPressEvent(QKeyEvent* event)
{
  if (event->matches(QKeySequence::Delete) || event->matches(QKeySequence::Back))
  {
    QList<QListWidgetItem*> items = this->selectedItems();
    for (int i=0; i<items.size(); ++i)
      delete items[i];
    emit userChangedList();
    emit listSizeChanged();
  }
}

QMap<int, QVariant> SelectedDataListWidget::convertFromCustomQtMimeFormat(const QMimeData* mimeData) const
{
  QMap<int, QVariant> v;
  if (!mimeData->hasFormat("application/x-qabstractitemmodeldatalist"))
    return v;

  QByteArray itemData = mimeData->data("application/x-qabstractitemmodeldatalist");
  QDataStream stream(&itemData, QIODevice::ReadOnly);
  int r, c;
//  QMap<int, QVariant> v;
  stream >> r >> c >> v;
//  std::cout << "var: " << r << " " << c << " " << v.size() << std::endl;
//  if (!v.empty())
//  {
//    QString uid = v[Qt::UserRole].toString();
//    std::cout << "v: " << " " << v.begin()->typeName() << " " << v.begin()->toString() << " uid= " << uid << std::endl;
//
//  }
  return v;
}

void SelectedDataListWidget::dropEvent(QDropEvent *event)
{
  if (event->source()==this)
  {
    std::cout << "drop this: " << event->mimeData()->formats().join(",") << std::endl;
    event->setDropAction(Qt::MoveAction);
  }

  QString sourceUid;
  QMap<int, QVariant> sourceData = this->convertFromCustomQtMimeFormat(event->mimeData());
  if (sourceData.contains(Qt::UserRole))
    sourceUid = sourceData[Qt::UserRole].toString();

//  if (event->mimeData()->hasFormat("application/x-qabstractitemmodeldatalist"))
//  {
//    QByteArray itemData = event->mimeData()->data("application/x-qabstractitemmodeldatalist");
//    QDataStream stream(&itemData, QIODevice::ReadOnly);
//    int r, c;
//    QMap<int, QVariant> v;
//    stream >> r >> c >> v;
//    std::cout << "var: " << r << " " << c << " " << v.size() << std::endl;
//    if (!v.empty())
//    {
//      QString uid = v[Qt::UserRole].toString();
//      std::cout << "v: " << " " << v.begin()->typeName() << " " << v.begin()->toString() << " uid= " << uid << std::endl;
//
//      newUid = uid;
//    }
//  }

  QListWidgetItem* itemToDelete = 0;
  for(int i=0; i < this->count(); ++i)
  {
    QListWidgetItem* item = this->item(i);
    if (item->data(Qt::UserRole)==sourceUid)
      itemToDelete = item;
  }

//  std:: cout << "received dropEvent: " << event->mimeData()->text() << std::endl;
//    this->populateData(event->mimeData()->text(), false, pos);
//    event->setDropAction(Qt::MoveAction);
//    event->accept();
//  std::cout << "dropaction " << event->dropAction() << std::endl;
  QListWidget::dropEvent(event);
  if (event->source()!=this) // remove old item if new if moved in from external source
    delete itemToDelete;

  emit userChangedList();
  emit listSizeChanged();
}

QStringList SelectedDataListWidget::getData()
{
  QStringList retval;

  for(int i=0; i < this->count(); ++i)
  {
    QListWidgetItem* item = this->item(i);
    retval << item->data(Qt::UserRole).toString();
  }

  return retval;
}

void SelectedDataListWidget::deleteSlot()
{
  if(!mItemToDelete)
  {
        reportDebug("Found no item to delete...");
    return;
  }
  this->deleteItemSlot(mItemToDelete);
}

void SelectedDataListWidget::deleteItemSlot(QListWidgetItem* item)
{
  delete item;
  emit userChangedList();
  emit listSizeChanged();
}

void SelectedDataListWidget::contextMenuSlot(const QPoint& point)
{
  QWidget* sender = dynamic_cast<QWidget*>(this->sender());
  QPoint pointGlobal = sender->mapToGlobal(point);
  QMenu contextMenu(sender);

  QAction* action = new QAction("Remove", &contextMenu);

  QListWidgetItem* item = this->itemAt(point);
  if(!item)
  {
        reportDebug("Found no item to delete...");
  }
  mItemToDelete = item;

  connect(action, SIGNAL(triggered()), this, SLOT(deleteSlot()));
  contextMenu.addAction(action);

  contextMenu.exec(pointGlobal);
}

void SelectedDataListWidget::populateList()
{
  this->clear();

  std::vector<DataPtr> sorted = mViewGroupData->getData();
  std::reverse(sorted.begin(), sorted.end());
  for (std::vector<DataPtr>::iterator iter=sorted.begin(); iter!=sorted.end(); ++iter)
  {
    QString uid = (*iter)->getUid();
    this->populateData(uid);
  }

  emit listSizeChanged();
}

void SelectedDataListWidget::setViewGroupData(ViewGroupDataPtr viewGroupData)
{
  if (mViewGroupData)
  {
        disconnect(mViewGroupData.get(), &ViewGroupData::initialized, this, &SelectedDataListWidget::populateList);
        disconnect(mViewGroupData.get(), &ViewGroupData::dataViewPropertiesChanged, this, &SelectedDataListWidget::populateList);
  }

  mViewGroupData = viewGroupData;

  if (mViewGroupData)
  {
        connect(mViewGroupData.get(), &ViewGroupData::initialized, this, &SelectedDataListWidget::populateList);
        connect(mViewGroupData.get(), &ViewGroupData::dataViewPropertiesChanged, this, &SelectedDataListWidget::populateList);
  }

  this->populateList();
}



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


class AbraClass : public QListWidget
{
public:
  AbraClass(QWidget* parent) : QListWidget(parent) {}
protected:
  void dropEvent(QDropEvent *event)
  {
//    QListWidgetItem* pos = NULL;

    if (event->source()==this)
    {
      std::cout << "drop this: " << event->mimeData()->formats().join(",") << std::endl;
      event->setDropAction(Qt::MoveAction);
    }

    QString newUid;
    if (event->mimeData()->hasFormat("application/x-qabstractitemmodeldatalist"))
    {
      QByteArray itemData = event->mimeData()->data("application/x-qabstractitemmodeldatalist");
      QDataStream stream(&itemData, QIODevice::ReadOnly);
      int r, c;
      QMap<int, QVariant> v;
      stream >> r >> c >> v;
      std::cout << "var: " << r << " " << c << " " << v.size() << std::endl;
      if (!v.empty())
      {
        std::cout << "v: " << " " << v.begin()->typeName() << " " << v.begin()->toString() << std::endl;
        newUid = v.begin()->toString();
      }
    }

    QListWidgetItem* itemToDelete = 0;
    for(int i=0; i < this->count(); ++i)
    {
      QListWidgetItem* item = this->item(i);
      if (item->text()==newUid)
        itemToDelete = item;
    }

  //  std:: cout << "received dropEvent: " << event->mimeData()->text() << std::endl;
//    this->populateData(event->mimeData()->text(), false, pos);
//    event->setDropAction(Qt::MoveAction);
//    event->accept();
    std::cout << "dropaction " << event->dropAction() << std::endl;
    QListWidget::dropEvent(event);
    if (event->source()!=this) // remove old item if new if moved in from external source
      delete itemToDelete;
  }

};

class TestClass : public QListWidget
{
public:
  TestClass(QWidget* parent) : QListWidget(parent) {}
protected:
  void dropEvent(QDropEvent *event)
  {
    // ignore drop
    event->setDropAction(Qt::MoveAction);
    event->acceptProposedAction();
//    QListWidget::dropEvent(event);
  }

};

DataViewSelectionWidget::DataViewSelectionWidget(QWidget* parent)
{
  // TODO Auto-generated constructor stub
  QHBoxLayout* layout = new QHBoxLayout(this);

  mSelectedDataListWidget = new SelectedDataListWidget(this);
  mAllDataListWidget = new AllDataListWidget(this);
#if 0
  TestClass* test = new TestClass(this);
  test->addItem("test1");
  test->addItem("test2");
  test->addItem("test3");
  test->addItem("test4");
  //test->setDragDropMode(QAbstractItemView::InternalMove);
  test->setDropIndicatorShown(false);
  test->setDragEnabled(true);
  test->setAcceptDrops(true);

  AbraClass* abra = new AbraClass(this);
  abra->addItem("abra1");
  abra->addItem("abra2");
  abra->addItem("abra3");
  abra->addItem("abra4");
//  abra->setDragDropMode(QAbstractItemView::InternalMove);
  abra->setDropIndicatorShown(true);
  abra->setDragEnabled(true);
  abra->setAcceptDrops(true);
  abra->viewport()->setAcceptDrops(true);
  abra->setDragDropOverwriteMode(true);

  layout->addWidget(test);
  layout->addWidget(abra);
#endif

  QVBoxLayout* selLayout = new QVBoxLayout;
  mVisibleLabel = new QLabel("Visible", this);
  selLayout->addWidget(mVisibleLabel);
  selLayout->addWidget(mSelectedDataListWidget);
  layout->addLayout(selLayout);

  QVBoxLayout* allLayout = new QVBoxLayout;
  allLayout->addWidget(new QLabel("All"));
  allLayout->addWidget(mAllDataListWidget);
  layout->addLayout(allLayout);

  connect(viewService().get(), SIGNAL(activeViewChanged()), this, SLOT(viewGroupChangedSlot()));
  this->viewGroupChangedSlot();
}

void DataViewSelectionWidget::viewGroupChangedSlot()
{
  int vg = viewService()->getActiveGroupId();
  if (vg<0)
    vg = 0;

  ViewGroupDataPtr group = viewService()->getGroup(vg);
  if (group)
          mSelectedDataListWidget->setViewGroupData(group);

  mVisibleLabel->setText("Visible in group "+qstring_cast(vg));
}


DataViewSelectionWidget::~DataViewSelectionWidget()
{
  // TODO Auto-generated destructor stub
}

}