org.zkoss.zul.event
Class TreeDataEvent

java.lang.Object
  org.zkoss.zul.event.TreeDataEvent

public class TreeDataEvent
extends java.lang.Object

Defines an event that encapsulates changes to a tree.

Since:

3.0.0

Author:

Jeff Liu

Field Summary

static int	CONTENTS_CHANGED Identifies changing contents of nodes.
static int	INTERVAL_ADDED Identifies the addition of children to a node.
static int	INTERVAL_REMOVED Identifies the removal of children to a node.
static int	MULTIPLE_CHANGED Identified the state of Selectable.isMultiple() is changed.
static int	OPEN_CHANGED Identifies the open status of the tree has changed.
static int	SELECTION_CHANGED Identifies the selection of the tree has changed.
static int	STRUCTURE_CHANGED Identifies the structure of the tree has changed.

Constructor Summary

TreeDataEvent(TreeModel model, int type, int[] nodePath, int indexFrom, int indexTo)
Constructor.

Method Summary

int	getIndexFrom() Return the lower index of the change range
int	getIndexTo() Return the upper index of the change range
TreeModel	getModel() Returns the tree model that fires this event.
int[]	getPath() Returns the path of the affected node.
int	getType() Returns the event type.

Methods inherited from class java.lang.Object

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

Field Detail

CONTENTS_CHANGED

public static final int CONTENTS_CHANGED

Identifies changing contents of nodes.

See Also:

Constant Field Values

INTERVAL_ADDED

public static final int INTERVAL_ADDED

Identifies the addition of children to a node.

See Also:

Constant Field Values

INTERVAL_REMOVED

public static final int INTERVAL_REMOVED

Identifies the removal of children to a node.

See Also:

Constant Field Values

STRUCTURE_CHANGED

public static final int STRUCTURE_CHANGED

Identifies the structure of the tree has changed. @since 5.0.6

See Also:

Constant Field Values

SELECTION_CHANGED

public static final int SELECTION_CHANGED

Identifies the selection of the tree has changed. @since 6.0.0

See Also:

Constant Field Values

OPEN_CHANGED

public static final int OPEN_CHANGED

Identifies the open status of the tree has changed. @since 6.0.0

See Also:

Constant Field Values

MULTIPLE_CHANGED

public static final int MULTIPLE_CHANGED

Identified the state of Selectable.isMultiple() is changed.

Since:

6.0.0

See Also:

Constant Field Values

Constructor Detail

TreeDataEvent

public TreeDataEvent(TreeModel model,
                     int type,
                     int[] nodePath,
                     int indexFrom,
                     int indexTo)

Constructor.

Parameters:

type - one of CONTENTS_CHANGED, INTERVAL_ADDED, INTERVAL_REMOVED, SELECTION_CHANGED, OPEN_CHANGED, STRUCTURE_CHANGED or MULTIPLE_CHANGED.

nodePath - the path of the affected node. If CONTENTS_CHANGED, INTERVAL_ADDED or INTERVAL_REMOVED, it is the parent node. If SELECTION_CHANGED or OPEN_CHANGED, it is the node being selected or opened. If STRUCTURE_CHANGED or MULTIPLE_CHANGED, it is null.

indexFrom - the lower index of the change range

indexTo - the upper index of the change range

Method Detail

getModel

public TreeModel getModel()

Returns the tree model that fires this event.

getType

public int getType()

Returns the event type. One of CONTENTS_CHANGED, INTERVAL_ADDED, or INTERVAL_REMOVED.

getPath

public int[] getPath()

Returns the path of the affected node. If CONTENTS_CHANGED, INTERVAL_ADDED or INTERVAL_REMOVED, it is the parent node. If SELECTION_CHANGED or OPEN_CHANGED, it is the node being selected or opened. If STRUCTURE_CHANGED or MULTIPLE_CHANGED, it is null.

Returns:

the parent node that one of its children being modified

getIndexFrom

public int getIndexFrom()

Return the lower index of the change range

Returns:

the lower index of the change range

getIndexTo

public int getIndexTo()

Return the upper index of the change range

Returns:

the upper index of the change range