DataStorage model that maintains a history of node selections. More...

#include <QmitkDataStorageHistoryModel.h>

Inheritance diagram for QmitkDataStorageHistoryModel:

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Collaboration diagram for QmitkDataStorageHistoryModel:

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Public Member Functions
	QmitkDataStorageHistoryModel (QObject *parent)
	Constructs the history model. More...

Public Member Functions inherited from QmitkDataStorageDefaultListModel
	QmitkDataStorageDefaultListModel (QObject *parent)
	Constructs the model. More...

void	DataStorageChanged () override
	Called when the data storage has changed. Rebuilds the model data. More...

void	NodePredicateChanged () override
	Called when the node predicate has changed. Rebuilds the model data. More...

void	NodeAdded (const mitk::DataNode *node) override
	Called when a node is added to the data storage. More...

void	NodeChanged (const mitk::DataNode *node) override
	Called when a node in the data storage has changed. More...

void	NodeRemoved (const mitk::DataNode *node) override
	Called when a node is removed from the data storage. More...

QModelIndex	index (int row, int column, const QModelIndex &parent=QModelIndex()) const override
	Returns the model index for the given row and column. More...

QModelIndex	parent (const QModelIndex &child) const override
	Returns the parent index. Always returns an invalid index (flat model). More...

int	rowCount (const QModelIndex &parent=QModelIndex()) const override
	Returns the number of rows (nodes) in the model. More...

int	columnCount (const QModelIndex &parent=QModelIndex()) const override
	Returns the number of columns. Always returns 1. More...

QVariant	data (const QModelIndex &index, int role=Qt::DisplayRole) const override
	Returns data for the given index and role. More...

QVariant	headerData (int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const override
	Returns header data for the given section and orientation. More...

Qt::ItemFlags	flags (const QModelIndex &index) const override
	Returns the item flags for the given index. More...

Public Member Functions inherited from QmitkAbstractDataStorageModel
	~QmitkAbstractDataStorageModel () override

void	SetDataStorage (mitk::DataStorage *dataStorage)
	Sets the data storage and registers node event listeners. More...

mitk::DataStorage::Pointer	GetDataStorage () const
	Returns a locked pointer to the current data storage. More...

void	SetNodePredicate (const mitk::NodePredicateBase *nodePredicate)
	Sets the node predicate and triggers a model update. More...

const mitk::NodePredicateBase *	GetNodePredicate () const
	Returns the currently set node predicate. More...

Static Public Member Functions
static void	AddNodeToHistory (mitk::DataNode *node)
	Adds a node to the global selection history. More...

static void	ResetHistory ()
	Clears the entire selection history. More...

Protected Member Functions
void	UpdateModelData () override

Protected Member Functions inherited from QmitkAbstractDataStorageModel
	QmitkAbstractDataStorageModel (QObject *parent=nullptr)

	QmitkAbstractDataStorageModel (mitk::DataStorage dataStorage, QObject parent=nullptr)

Additional Inherited Members
Protected Attributes inherited from QmitkDataStorageDefaultListModel
std::vector< mitk::DataNode::Pointer >	m_DataNodes

Protected Attributes inherited from QmitkAbstractDataStorageModel
mitk::WeakPointer< mitk::DataStorage >	m_DataStorage

mitk::NodePredicateBase::ConstPointer	m_NodePredicate

Detailed Description

DataStorage model that maintains a history of node selections.

This model extends QmitkDataStorageDefaultListModel to present nodes ordered by selection time (LIFO – most recently selected first). The history is maintained as a static list shared across all instances.

Nodes appear in the history only if they satisfy all of the following:

The node is still present in the data storage.
The node pointer is valid (not expired).
Each node appears at most once (duplicates are removed).

See also: QmitkDataStorageDefaultListModel; QmitkDataStorageSelectionHistoryInspector

Definition at line 35 of file QmitkDataStorageHistoryModel.h.

Constructor & Destructor Documentation

◆ QmitkDataStorageHistoryModel()

QmitkDataStorageHistoryModel::QmitkDataStorageHistoryModel ( QObject * parent )

Constructs the history model.

Parameters

[in] parent The parent QObject.

Member Function Documentation

◆ AddNodeToHistory()

static void QmitkDataStorageHistoryModel::AddNodeToHistory ( mitk::DataNode * node )

static

Adds a node to the global selection history.

If the node is already present in the history, the old entry is removed before inserting the node at the front. A nullptr node is silently ignored.

Parameters

[in] node The data node to add. May be nullptr.

◆ ResetHistory()

static void QmitkDataStorageHistoryModel::ResetHistory ( )

static

Clears the entire selection history.

◆ UpdateModelData()

void QmitkDataStorageHistoryModel::UpdateModelData ( )

overrideprotectedvirtual

Reimplemented from QmitkDataStorageDefaultListModel.

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

QmitkDataStorageHistoryModel.h

Public Member Functions

Static Public Member Functions

Protected Member Functions