Class QtAbstractListModel

java.lang.Object

org.qtproject.qt.android.QtAbstractItemModel

org.qtproject.qt.android.QtAbstractListModel

public abstract class QtAbstractListModel
extends QtAbstractItemModel

Nested Class Summary

Nested classes/interfaces inherited from class org.qtproject.qt.android.QtAbstractItemModel

QtAbstractItemModel.OnDataChangedListener

Constructor Summary

Constructors

Constructor	Description
QtAbstractListModel()

Method Summary

Modifier and Type	Method	Description
final int	columnCount(QtModelIndex parent)	Returns the number of columns for the children of the given parent.
final boolean	hasChildren(QtModelIndex parent)	Returns true if the parent has any children; otherwise, returns false.
QtModelIndex	index(int row, int column, QtModelIndex parent)	Returns the index for the specified row and column for the supplied parent index.
final QtModelIndex	parent(QtModelIndex index)	Returns the parent of the model item with the given index.
QtModelIndex	sibling(int row, int column, QtModelIndex parent)	Returns the sibling at row and column for the item at index or an invalid QModelIndex if there is no sibling at that location.

Methods inherited from class org.qtproject.qt.android.QtAbstractItemModel

beginInsertColumns, beginInsertRows, beginMoveColumns, beginMoveRows, beginRemoveColumns, beginRemoveRows, beginResetModel, canFetchMore, createIndex, data, dataChanged, endInsertColumns, endInsertRows, endMoveColumns, endMoveRows, endRemoveColumns, endRemoveRows, endResetModel, fetchMore, hasIndex, roleNames, rowCount, setData, setOnDataChangedListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

QtAbstractListModel

public QtAbstractListModel()

Method Details

columnCount

public final int columnCount(QtModelIndex parent)

Description copied from class: QtAbstractItemModel

Returns the number of columns for the children of the given parent. In most subclasses, the number of columns is independent of the parent. For example:

 @Override
 int columnCount(const QtModelIndex parent)
 {
   return 3;
 }
 

When implementing a table-based model, columnCount() should return 0, when the parent is valid.

Specified by:

columnCount in class QtAbstractItemModel

Parameters:

parent - The parent index.

Returns:

The number of columns.

See Also:

• QtAbstractItemModel.rowCount(QtModelIndex)

index

public QtModelIndex index(int row,
 int column,
 QtModelIndex parent)

Description copied from class: QtAbstractItemModel

Returns the index for the specified row and column for the supplied parent index. When re-implementing this function in a subclass, call createIndex() to generate model indexes that other components can use to refer to items in your model.

Specified by:

index in class QtAbstractItemModel

Parameters:

row - The row.

column - The column.

parent - The parent index.

Returns:

The index.

See Also:

• QtAbstractItemModel.createIndex(int row, int column, long id)

parent

public final QtModelIndex parent(QtModelIndex index)

Description copied from class: QtAbstractItemModel

Returns the parent of the model item with the given index. If the item has no parent, then an invalid QtModelIndex is returned. A common convention used in models that expose tree data structures is that only items in the first column have children. For that case, when re-implementing this function in a subclass, the column of the returned QtModelIndex would be 0. When re-implementing this function in a subclass, be careful to avoid calling QtModelIndex member functions, such as QtAbstractItemModel.parent(QtModelIndex), since indexes belonging to your model will call your implementation, leading to infinite recursion.

Specified by:

parent in class QtAbstractItemModel

Parameters:

index - The index.

Returns:

The parent index.

See Also:

• QtAbstractItemModel.createIndex(int row, int column, long id)

hasChildren

public final boolean hasChildren(QtModelIndex parent)

Description copied from class: QtAbstractItemModel

Returns true if the parent has any children; otherwise, returns false. Use rowCount() on the parent to get the number of children.

Overrides:

hasChildren in class QtAbstractItemModel

Parameters:

parent - The parent index.

Returns:

True if the parent has children, false otherwise.

See Also:

• QtAbstractItemModel.parent(QtModelIndex index)
• QtAbstractItemModel.index(int row, int column, QtModelIndex parent)

sibling

public QtModelIndex sibling(int row,
 int column,
 QtModelIndex parent)

Description copied from class: QtAbstractItemModel

Returns the sibling at row and column for the item at index or an invalid QModelIndex if there is no sibling at that location. sibling() is just a convenience function that finds the item's parent and uses it to retrieve the index of the child item in the specified row and column. This method can optionally be overridden to optimize a specific implementation.

Overrides:

sibling in class QtAbstractItemModel

Parameters:

row - The row.

column - The column.

parent - The parent index.

Returns:

The sibling index.