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java.lang.Objectcom.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.core.QObject
com.trolltech.qt.core.QAbstractItemModel
com.trolltech.qt.gui.QAbstractTableModel
public abstract class QAbstractTableModel
The QAbstractTableModel class provides an abstract model that can be subclassed to create table models.
QAbstractTableModel provides a standard interface for models that represent their data as a two-dimensional array of items. It is not used directly, but must be subclassed.
Since the model provides a more specialized interface than QAbstractItemModel, it is not suitable for use with tree views, although it can be used to provide data to a QListView. If you need to represent a simple list of items, and only need a model to contain a single column of data, subclassing the QAbstractListModel may be more appropriate.
The rowCount and columnCount functions return the dimensions of the table. To retrieve a model index corresponding to an item in the model, use index and provide only the row and column numbers.
Note: Some general guidelines for subclassing models are available in the Model Subclassing Reference.
When subclassing QAbstractTableModel, you must implement rowCount, columnCount, and data. Default implementations of the index and parent functions are provided by QAbstractTableModel. Well behaved models will also implement headerData.
Editable models need to implement setData, and implement flags to return a value containing Qt::ItemIsEditable.
Models that provide interfaces to resizable data structures can provide implementations of insertRows, removeRows, insertColumns, and removeColumns. When implementing these functions, it is important to call the appropriate functions so that all connected views are aware of any changes:
Example
Nested Class Summary |
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Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter |
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QSignalEmitter.Signal0, QSignalEmitter.Signal1<A>, QSignalEmitter.Signal2<A,B>, QSignalEmitter.Signal3<A,B,C>, QSignalEmitter.Signal4<A,B,C,D>, QSignalEmitter.Signal5<A,B,C,D,E>, QSignalEmitter.Signal6<A,B,C,D,E,F>, QSignalEmitter.Signal7<A,B,C,D,E,F,G>, QSignalEmitter.Signal8<A,B,C,D,E,F,G,H>, QSignalEmitter.Signal9<A,B,C,D,E,F,G,H,I> |
Field Summary |
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Fields inherited from class com.trolltech.qt.core.QAbstractItemModel |
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dataChanged, headerDataChanged, layoutAboutToBeChanged, layoutChanged |
Constructor Summary | |
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QAbstractTableModel()
Equivalent to QAbstractTableModel(0). |
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QAbstractTableModel(QObject parent)
Constructs an abstract table model for the given parent. |
Method Summary | |
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boolean |
dropMimeData(QMimeData data,
Qt.DropAction action,
int row,
int column,
QModelIndex parent)
Handles the data supplied by a drag and drop operation that ended with the given action. |
static QAbstractTableModel |
fromNativePointer(QNativePointer nativePointer)
This function returns the QAbstractTableModel instance pointed to by nativePointer |
boolean |
hasChildren(QModelIndex parent)
Deprecated. |
QModelIndex |
index(int row,
int column,
QModelIndex parent)
Returns the index of the data in row and column with parent. |
QModelIndex |
parent(QModelIndex child)
Deprecated. |
Methods inherited from class com.trolltech.qt.core.QObject |
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blockSignals, childEvent, children, connectSlotsByName, customEvent, disposeLater, dumpObjectInfo, dumpObjectTree, dynamicPropertyNames, event, eventFilter, findChild, findChild, findChild, findChildren, findChildren, findChildren, findChildren, installEventFilter, isWidgetType, killTimer, moveToThread, objectName, parent, property, removeEventFilter, setObjectName, setParent, setProperty, signalsBlocked, startTimer, thread, timerEvent |
Methods inherited from class com.trolltech.qt.QtJambiObject |
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dispose, disposed, finalize, reassignNativeResources, tr, tr, tr |
Methods inherited from class com.trolltech.qt.QSignalEmitter |
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disconnect, disconnect, signalSender |
Methods inherited from class java.lang.Object |
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clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.trolltech.qt.QtJambiInterface |
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disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership |
Constructor Detail |
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public QAbstractTableModel()
Equivalent to QAbstractTableModel(0).
public QAbstractTableModel(QObject parent)
Constructs an abstract table model for the given parent.
Method Detail |
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@Deprecated public final boolean hasChildren(QModelIndex parent)
Returns true if parent has any children; otherwise returns false. Use rowCount on the parent to find out the number of children.
hasChildren
in class QAbstractItemModel
@Deprecated public final QModelIndex parent(QModelIndex child)
Returns the parent of the model item with the given child, or QModelIndex() if it has no parent.
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 reimplementing this function in a subclass the column of the returned QModelIndex would be 0.
parent
in class QAbstractItemModel
public boolean dropMimeData(QMimeData data, Qt.DropAction action, int row, int column, QModelIndex parent)
Handles the data supplied by a drag and drop operation that ended with the given action. Returns true if the data and action can be handled by the model; otherwise returns false.
Although the specified row, column and parent indicate the location of an item in the model where the operation ended, it is the responsibility of the view to provide a suitable location for where the data should be inserted.
For instance, a drop action on an item in a QTreeView can result in new items either being inserted as children of the item specified by row, column, and parent, or as siblings of the item.
When row and column are -1 it means that it is up to the model to decide where to place the data. This can occur in a tree when data is dropped on a parent. Models will usually append the data to the parent in this case.
Returns true if the dropping was successful otherwise false.
dropMimeData
in class QAbstractItemModel
public QModelIndex index(int row, int column, QModelIndex parent)
Returns the index of the data in row and column with parent.
index
in class QAbstractItemModel
public static QAbstractTableModel fromNativePointer(QNativePointer nativePointer)
nativePointer
- the QNativePointer of which object should be returned.
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