echopoint.tree
Class TreeListSelectionModel

java.lang.Object
  echopoint.tree.TreeListSelectionModel

All Implemented Interfaces:

nextapp.echo.ListSelectionModel, java.io.Serializable

public class TreeListSelectionModel

extends java.lang.Object

implements nextapp.echo.ListSelectionModel, java.io.Serializable

Default data model for tree list selections.

See Also:

Serialized Form

Field Summary

protected boolean	leadAnchorNotificationEnabled
protected nextapp.echo.event.EventListenerList	listenerList
static int	MULTIPLE_INTERVAL_SELECTION
static int	SINGLE_INTERVAL_SELECTION
static int	SINGLE_SELECTION

Fields inherited from interface nextapp.echo.ListSelectionModel

MULTIPLE_SELECTION

Constructor Summary

TreeListSelectionModel()

Method Summary

void	addListSelectionListener(nextapp.echo.event.ListSelectionListener l)
void	addSelectionInterval(int index0, int index1)
void	clearSelection()
protected void	fireValueChanged(boolean isAdjusting) Notify listeners that we have ended a series of adjustments.
protected void	fireValueChanged(int firstIndex, int lastIndex) Notify ListSelectionListeners that the value of the selection, in the closed interval firstIndex,lastIndex, has changed.
protected void	fireValueChanged(int firstIndex, int lastIndex, boolean isAdjusting)
int	getAnchorSelectionIndex()
int	getLeadSelectionIndex()
int	getMaxSelectedIndex()
int	getMinSelectedIndex()
int	getSelectionMode()
boolean	getValueIsAdjusting()
void	insertIndexInterval(int index, int length, boolean before) Insert length indices beginning before/after index.
boolean	isLeadAnchorNotificationEnabled() Returns the value of the leadAnchorNotificationEnabled flag.
boolean	isSelectedIndex(int index)
boolean	isSelectionEmpty()
void	removeIndexInterval(int index0, int index1) Remove the indices in the interval index0,index1 (inclusive) from the selection model.
void	removeListSelectionListener(nextapp.echo.event.ListSelectionListener l)
void	removeSelectionInterval(int index0, int index1)
void	setAnchorSelectionIndex(int anchorIndex) Set the anchor selection index, leaving all selection values unchanged.
void	setLeadAnchorNotificationEnabled(boolean flag) Sets the value of the leadAnchorNotificationEnabled flag.
void	setLeadSelectionIndex(int leadIndex) Set the lead selection index, ensuring that values between the anchor and the new lead are either all selected or all deselected.
void	setSelectedIndex(int index, boolean selected)
void	setSelectionInterval(int index0, int index1)
void	setSelectionMode(int selectionMode)
void	setValueIsAdjusting(boolean isAdjusting)
java.lang.String	toString() Returns a string that displays and identifies this object's properties.

Methods inherited from class java.lang.Object

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

Field Detail

SINGLE_SELECTION

public static final int SINGLE_SELECTION

See Also:

Constant Field Values

SINGLE_INTERVAL_SELECTION

public static final int SINGLE_INTERVAL_SELECTION

See Also:

Constant Field Values

MULTIPLE_INTERVAL_SELECTION

public static final int MULTIPLE_INTERVAL_SELECTION

See Also:

Constant Field Values

listenerList

protected nextapp.echo.event.EventListenerList listenerList

leadAnchorNotificationEnabled

protected boolean leadAnchorNotificationEnabled

Constructor Detail

TreeListSelectionModel

public TreeListSelectionModel()

Method Detail

addListSelectionListener

public void addListSelectionListener(nextapp.echo.event.ListSelectionListener l)

Specified by:

addListSelectionListener in interface nextapp.echo.ListSelectionModel

addSelectionInterval

public void addSelectionInterval(int index0,
                                 int index1)

clearSelection

public void clearSelection()

Specified by:

clearSelection in interface nextapp.echo.ListSelectionModel

fireValueChanged

protected void fireValueChanged(int firstIndex,
                                int lastIndex)

Notify ListSelectionListeners that the value of the selection, in the closed interval firstIndex,lastIndex, has changed.

fireValueChanged

protected void fireValueChanged(int firstIndex,
                                int lastIndex,
                                boolean isAdjusting)

Parameters:

firstIndex - The first index in the interval.

lastIndex - The last index in the interval.

isAdjusting - True if this is the final change in a series of them.

fireValueChanged

protected void fireValueChanged(boolean isAdjusting)

Notify listeners that we have ended a series of adjustments.

getAnchorSelectionIndex

public int getAnchorSelectionIndex()

getLeadSelectionIndex

public int getLeadSelectionIndex()

getMaxSelectedIndex

public int getMaxSelectedIndex()

Specified by:

getMaxSelectedIndex in interface nextapp.echo.ListSelectionModel

getMinSelectedIndex

public int getMinSelectedIndex()

Specified by:

getMinSelectedIndex in interface nextapp.echo.ListSelectionModel

getSelectionMode

public int getSelectionMode()

Specified by:

getSelectionMode in interface nextapp.echo.ListSelectionModel

getValueIsAdjusting

public boolean getValueIsAdjusting()

insertIndexInterval

public void insertIndexInterval(int index,
                                int length,
                                boolean before)

Insert length indices beginning before/after index. If the value at index is itself selected, set all of the newly inserted items, otherwise leave them unselected. This method is typically called to sync the selection model with a corresponding change in the data model.

isLeadAnchorNotificationEnabled

public boolean isLeadAnchorNotificationEnabled()

Returns the value of the leadAnchorNotificationEnabled flag. When leadAnchorNotificationEnabled is true the model generates notification events with bounds that cover all the changes to the selection plus the changes to the lead and anchor indices. Setting the flag to false causes a norrowing of the event's bounds to include only the elements that have been selected or deselected since the last change. Either way, the model continues to maintain the lead and anchor variables internally. The default is true.

isSelectedIndex

public boolean isSelectedIndex(int index)

Specified by:

isSelectedIndex in interface nextapp.echo.ListSelectionModel

isSelectionEmpty

public boolean isSelectionEmpty()

Specified by:

isSelectionEmpty in interface nextapp.echo.ListSelectionModel

removeIndexInterval

public void removeIndexInterval(int index0,
                                int index1)

Remove the indices in the interval index0,index1 (inclusive) from the selection model. This is typically called to sync the selection model width a corresponding change in the data model. Note that (as always) index0 need not be <= index1.

removeListSelectionListener

public void removeListSelectionListener(nextapp.echo.event.ListSelectionListener l)

Specified by:

removeListSelectionListener in interface nextapp.echo.ListSelectionModel

removeSelectionInterval

public void removeSelectionInterval(int index0,
                                    int index1)

setAnchorSelectionIndex

public void setAnchorSelectionIndex(int anchorIndex)

Set the anchor selection index, leaving all selection values unchanged. If leadAnchorNotificationEnabled is true, send a notification covering the old and new anchor cells.

setLeadAnchorNotificationEnabled

public void setLeadAnchorNotificationEnabled(boolean flag)

Sets the value of the leadAnchorNotificationEnabled flag.

setLeadSelectionIndex

public void setLeadSelectionIndex(int leadIndex)

Set the lead selection index, ensuring that values between the anchor and the new lead are either all selected or all deselected. If the value at the anchor index is selected, first clear all the values in the range [anchor, oldLeadIndex], then select all the values values in the range [anchor, newLeadIndex], where oldLeadIndex is the old leadIndex and newLeadIndex is the new one.

If the value at the anchor index is not selected, do the same thing in reverse, selecting values in the old range and deslecting values in the new one.

Generate a single event for this change and notify all listeners. For the purposes of generating minimal bounds in this event, do the operation in a single pass; that way the first and last index inside the ListSelectionEvent that is broadcast will refer to cells that actually changed value because of this method. If, instead, this operation were done in two steps the effect on the selection state would be the same but two events would be generated and the bounds around the changed values would be wider, including cells that had been first cleared only to later be set.

This method can be used in the mouseDragged() method of a UI class to extend a selection.

setSelectedIndex

public void setSelectedIndex(int index,
                             boolean selected)

Specified by:

setSelectedIndex in interface nextapp.echo.ListSelectionModel

setSelectionInterval

public void setSelectionInterval(int index0,
                                 int index1)

setSelectionMode

public void setSelectionMode(int selectionMode)

Specified by:

setSelectionMode in interface nextapp.echo.ListSelectionModel

setValueIsAdjusting

public void setValueIsAdjusting(boolean isAdjusting)

toString

public java.lang.String toString()

Returns a string that displays and identifies this object's properties.

Returns:

a String representation of this object