ProjectItemTreeView.cpp

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#include "ProjectItemTreeView.h"

#include <QEvent>
#include <QObject>
#include <QTreeView>
#include <QVBoxLayout>
#include <QWidget>

#include "ProjectItem.h"
#include "ProjectItemModel.h"

namespace Isis {
  ProjectItemTreeView::ProjectItemTreeView(QWidget *parent) : AbstractProjectItemView(parent) {
        
    m_treeView = new QTreeView(this);
    m_treeView->installEventFilter(this);
    setInternalModel( internalModel() );
    m_treeView->setDragEnabled(true);
    m_treeView->setAcceptDrops(false);
    m_treeView->setHeaderHidden(true);

    setAcceptDrops(true);
    
    QBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(m_treeView);
    layout->setContentsMargins(0, 0, 0, 0);

    setLayout(layout);
  }

  
  ProjectItemTreeView::~ProjectItemTreeView() {}


  QTreeView *ProjectItemTreeView::treeView() {
    return m_treeView;
  }

  
  void ProjectItemTreeView::setInternalModel(ProjectItemModel *model) {
    disconnect(internalModel(), 0, this, 0);

    AbstractProjectItemView::setInternalModel(model);
    m_treeView->reset();
    m_treeView->setModel(model);
    m_treeView->setSelectionModel( model->selectionModel() );
    m_treeView->setSelectionMode(QAbstractItemView::ExtendedSelection);

    connect( model, SIGNAL( itemAdded(ProjectItem *) ),
             this, SLOT( onItemAdded(ProjectItem *) ) );
  }


  void ProjectItemTreeView::onItemAdded(ProjectItem *item) {
    ProjectItem *parent = item->parent();
    if (!parent) {
      return;
    }
    if ( !parent->isImageList() && !parent->isControlList() ) {
      m_treeView->expand( parent->index() );
    }
  }
  
  
  bool ProjectItemTreeView::eventFilter(QObject *watched, QEvent *event) {
    if (event->type() == QEvent::DragEnter) {
      return true;
    }
    else if (event->type() == QEvent::Drop) {
      return true;
    }

    return AbstractProjectItemView::eventFilter(watched, event);
  }
  
}