TreeItem Class Reference

Detailed Description

Objects nodes for the TreeModel.

The TreeItem class provides simple items that contain several pieces of data, and which can provide information about their parent and child items

See also

TreeModel

Definition at line 27 of file TreeItem.h.

#include <TreeItem.h>

Inheritance diagram for TreeItem:

Collaboration diagram for TreeItem:

Public Member Functions
	TreeItem (QList< QVariant > data, TreeItem *parent)
virtual	~TreeItem ()
void	appendChild (TreeItem *item)
TreeItem *	child (int row) const
virtual int	childCount () const
virtual int	columnCount () const
virtual QVariant	data (int column) const
virtual bool	setData (int column, const QVariant &value)
int	row () const
TreeItem *	parentItem () const
bool	removeChildren (int position, int count)

Private Attributes
QList< TreeItem * >	_childItems
QList< QVariant >	_itemData
TreeItem *	_parentItem

Constructor & Destructor Documentation

TreeItem()

TreeItem::TreeItem	(	QList< QVariant >	data,
		TreeItem *	parent )

The constructor is only used to record the item's parent and the data associated with each column.

Definition at line 23 of file TreeItem.cpp.

    : _itemData(std::move(data)), _parentItem(parent)
{
}

~TreeItem()

TreeItem::~TreeItem ( )

virtual

A pointer to each of the child items belonging to this item will be stored in the _childItems private member variable. When the class's destructor is called, it must delete each of these to ensure that their memory is reused.

Definition at line 34 of file TreeItem.cpp.

{
    qDeleteAll(_childItems);
}

References _childItems.

Member Function Documentation

appendChild()

void TreeItem::appendChild

(

TreeItem *

item

)

Add a child to the tree item

Definition at line 42 of file TreeItem.cpp.

{
    _childItems.append(item);
}

References _childItems.

Referenced by GeoTreeModel::addChildren(), MeshModel::addMeshObject(), VtkVisPipeline::addPipelineItem(), GeoTreeModel::addPointList(), GeoTreeModel::addPolylineList(), ProcessModel::addProcessVar(), StationTreeModel::addStationList(), GeoTreeModel::addSurfaceList(), ElementTreeModel::setElement(), FemConditionModel::setFemCondition(), ElementTreeModel::setMesh(), and FemConditionModel::setProcessVariable().

child()

TreeItem * TreeItem::child

(

int

row

)

const

Returns the child that corresponds to the specified row number in the item's list of child items Returns nullptr if that child does not exist.

Definition at line 52 of file TreeItem.cpp.

{
    if (_childItems.count() > row)
    {
        return _childItems.value(row);
    }
 
    return nullptr;
}

References _childItems, and row().

Referenced by GeoTreeModel::addChildren(), GeoTreeModel::addPolylineList(), GeoTreeModel::addSurfaceList(), VtkVisPipelineItem::child(), ProcessModel::clearModel(), MeshModel::getMesh(), ProcessModel::getProcessVarItem(), VtkVisPipeline::highlightGeoObject(), VtkVisPipeline::highlightMeshComponent(), StationTreeModel::index(), TreeModel::index(), TreeModelIterator::next(), ProcessModel::removeCondition(), MeshModel::removeMesh(), ProcessModel::removeProcessVariable(), GeoTreeView::selectionChanged(), VtkVisPipeline::setGlobalBackfaceCulling(), VtkVisPipeline::setGlobalSuperelevation(), GeoTreeModel::setNameForItem(), StationTreeModel::setNameForItem(), VtkVisPipeline::showMeshElementQuality(), MeshModel::updateMesh(), and MeshModel::vtkSource().

childCount()

int TreeItem::childCount ( ) const

virtual

Returns the number of _childItems

Definition at line 65 of file TreeItem.cpp.

{
    return _childItems.count();
}

References _childItems.

Referenced by TreeModelIterator::TreeModelIterator(), MeshModel::addMeshObject(), VtkVisPipeline::addPipelineItem(), GeoTreeModel::addPolylineList(), GeoTreeModel::addSurfaceList(), ProcessModel::clearModel(), ElementTreeModel::clearView(), FemConditionModel::clearView(), MeshModel::getMesh(), ProcessModel::getProcessVarItem(), VtkVisPipeline::highlightGeoObject(), VtkVisPipeline::highlightMeshComponent(), TreeModelIterator::next(), VtkVisTabWidget::on_scaleZ_textChanged(), ProcessModel::removeCondition(), MeshModel::removeMesh(), ProcessModel::removeProcessVariable(), VtkVisPipeline::removeSourceItem(), VtkVisPipeline::removeSourceItem(), VtkVisPipeline::removeSourceItem(), TreeModel::rowCount(), VtkVisPipelineItem::setBackfaceCullingOnChildren(), VtkVisPipeline::setGlobalBackfaceCulling(), VtkVisPipeline::setGlobalSuperelevation(), VtkVisPipelineItem::setScaleOnChildren(), VtkVisPipeline::showMeshElementQuality(), MeshModel::updateMesh(), and MeshModel::vtkSource().

columnCount()

int TreeItem::columnCount ( ) const

virtual

Returns the number of columns of data in the item.

Definition at line 86 of file TreeItem.cpp.

{
    return _itemData.count();
}

References _itemData.

Referenced by TreeModel::columnCount().

data()

QVariant TreeItem::data ( int column ) const

virtual

Returns the data from all the columns.

Reimplemented in VtkVisPipelineItem.

Definition at line 94 of file TreeItem.cpp.

{
    return _itemData.value(column);
}

References _itemData.

Referenced by GeoObjectListItem::GeoObjectListItem(), GeoObjectListItem::GeoObjectListItem(), GeoObjectListItem::GeoObjectListItem(), GeoTreeModel::addPolylineList(), GeoTreeModel::addSurfaceList(), GeoTreeView::connectPolylines(), GeoTreeView::convertPointsToStations(), TreeModel::data(), VtkVisPipelineItem::data(), StationTreeView::exportList(), CondItem::getName(), ProcessVarItem::getName(), TreeModel::headerData(), GeoTreeView::loadFEMConditions(), GeoTreeView::mapGeometry(), StationTreeView::mapStations(), GeoTreeView::removeGeometry(), MeshModel::removeMesh(), StationTreeView::removeStationList(), ElementTreeView::selectionChanged(), GeoTreeView::selectionChanged(), GeoTreeView::setElementAsCondition(), GeoTreeView::setNameForElement(), StationTreeView::setNameForElement(), StationTreeModel::stationFromIndex(), GeoTreeView::writeToFile(), and StationTreeView::writeToFile().

parentItem()

TreeItem * TreeItem::parentItem

(

)

const

Returns the parent object of the tree item.

Definition at line 115 of file TreeItem.cpp.

{
    return _parentItem;
}

References _parentItem.

Referenced by VtkVisPipelineItem::VtkVisPipelineItem(), VtkVisPointSetItem::VtkVisPointSetItem(), VtkVisPipeline::addPipelineItem(), VtkVisImageItem::Initialize(), VtkVisPointSetItem::Initialize(), TreeModelIterator::next(), TreeModel::parent(), GeoTreeView::removeGeometry(), GeoTreeView::selectionChanged(), MeshView::selectionChanged(), StationTreeView::selectionChanged(), GeoTreeView::setElementAsCondition(), GeoTreeView::setNameForElement(), StationTreeView::setNameForElement(), and StationTreeModel::stationFromIndex().

removeChildren()

bool TreeItem::removeChildren	(	int	position,
		int	count )

Removes a number of children of the TreeItem starting from the given position.

Definition at line 124 of file TreeItem.cpp.

{
    if (position < 0 || position + count > _childItems.size())
    {
        return false;
    }
 
    for (int row = 0; row < count; ++row)
    {
        delete _childItems.takeAt(position);
    }
 
    return true;
}

References _childItems, and row().

Referenced by ElementTreeModel::clearView(), FemConditionModel::clearView(), ProcessModel::removeCondition(), MeshModel::removeMesh(), ProcessModel::removeProcessVariable(), TreeModel::removeRows(), and MeshModel::updateMesh().

row()

int TreeItem::row

(

)

const

Returns the item's location within its parent's list of items.

Definition at line 73 of file TreeItem.cpp.

{
    if (_parentItem)
    {
        return _parentItem->_childItems.indexOf(const_cast<TreeItem*>(this));
    }
 
    return 0;
}

References _childItems, and _parentItem.

Referenced by child(), VtkVisPipelineItem::child(), TreeModel::parent(), removeChildren(), ProcessModel::removeProcessVariable(), GeoTreeView::selectionChanged(), MeshView::selectionChanged(), StationTreeView::selectionChanged(), GeoTreeView::setElementAsCondition(), GeoTreeView::setNameForElement(), and StationTreeView::setNameForElement().

setData()

bool TreeItem::setData ( int column, const QVariant & value )

virtual

Sets the data at a given column.

Reimplemented in VtkVisPipelineItem.

Definition at line 102 of file TreeItem.cpp.

{
    if (column < 0 || column >= _itemData.size())
    {
        return false;
    }
 
    _itemData[column] = value;
    return true;
}

References _itemData.

Referenced by GeoTreeModel::addChildren(), TreeModel::setData(), VtkVisPipelineItem::setData(), GeoTreeModel::setNameForItem(), and StationTreeModel::setNameForItem().

Member Data Documentation

_childItems

QList<TreeItem*> TreeItem::_childItems

private

Definition at line 44 of file TreeItem.h.

Referenced by ~TreeItem(), appendChild(), child(), childCount(), removeChildren(), and row().

_itemData

QList<QVariant> TreeItem::_itemData

private

Definition at line 45 of file TreeItem.h.

Referenced by columnCount(), data(), and setData().

_parentItem

TreeItem* TreeItem::_parentItem

private

Definition at line 46 of file TreeItem.h.

Referenced by parentItem(), and row().

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The documentation for this class was generated from the following files:

• Applications/DataExplorer/Base/TreeItem.h
• Applications/DataExplorer/Base/TreeItem.cpp