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javax.swing.tree
Interface TreeSelectionModel

All Known Implementing Classes:
DefaultTreeSelectionModel sample code for javax.swing.tree.DefaultTreeSelectionModel definition code for javax.swing.tree.DefaultTreeSelectionModel , JTree.EmptySelectionModel sample code for javax.swing.JTree.EmptySelectionModel definition code for javax.swing.JTree.EmptySelectionModel 
public interface TreeSelectionModel

This interface represents the current state of the selection for the tree component. For information and examples of using tree selection models, see How to Use Trees in The Java Tutorial.

The state of the tree selection is characterized by a set of TreePaths, and optionally a set of integers. The mapping from TreePath to integer is done by way of an instance of RowMapper. It is not necessary for a TreeSelectionModel to have a RowMapper to correctly operate, but without a RowMapper getSelectionRows will return null.

A TreeSelectionModel can be configured to allow only one path (SINGLE_TREE_SELECTION) a number of continguous paths (CONTIGUOUS_TREE_SELECTION) or a number of discontiguous paths (DISCONTIGUOUS_TREE_SELECTION). A RowMapper is used to determine if TreePaths are contiguous. In the absence of a RowMapper CONTIGUOUS_TREE_SELECTION and DISCONTIGUOUS_TREE_SELECTION behave the same, that is they allow any number of paths to be contained in the TreeSelectionModel.

For a selection model of CONTIGUOUS_TREE_SELECTION any time the paths are changed (setSelectionPath, addSelectionPath ...) the TreePaths are again checked to make they are contiguous. A check of the TreePaths can also be forced by invoking resetRowSelection. How a set of discontiguous TreePaths is mapped to a contiguous set is left to implementors of this interface to enforce a particular policy.

Implementations should combine duplicate TreePaths that are added to the selection. For example, the following code 

   TreePath[] paths = new TreePath[] { treePath, treePath };
   treeSelectionModel.setSelectionPaths(paths);
should result in only one path being selected: treePath, and not two copies of treePath.

The lead TreePath is the last path that was added (or set). The lead row is then the row that corresponds to the TreePath as determined from the RowMapper.

Field Summary
static int CONTIGUOUS_TREE_SELECTION sample code for javax.swing.tree.TreeSelectionModel.CONTIGUOUS_TREE_SELECTION definition code for javax.swing.tree.TreeSelectionModel.CONTIGUOUS_TREE_SELECTION
          Selection can only be contiguous.
static int DISCONTIGUOUS_TREE_SELECTION sample code for javax.swing.tree.TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION definition code for javax.swing.tree.TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION
          Selection can contain any number of items that are not necessarily contiguous.
static int SINGLE_TREE_SELECTION sample code for javax.swing.tree.TreeSelectionModel.SINGLE_TREE_SELECTION definition code for javax.swing.tree.TreeSelectionModel.SINGLE_TREE_SELECTION
          Selection can only contain one path at a time.
 
Method Summary
 void addPropertyChangeListener sample code for javax.swing.tree.TreeSelectionModel.addPropertyChangeListener(java.beans.PropertyChangeListener) definition code for javax.swing.tree.TreeSelectionModel.addPropertyChangeListener(java.beans.PropertyChangeListener) (PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
          Adds a PropertyChangeListener to the listener list.
 void addSelectionPath sample code for javax.swing.tree.TreeSelectionModel.addSelectionPath(javax.swing.tree.TreePath) definition code for javax.swing.tree.TreeSelectionModel.addSelectionPath(javax.swing.tree.TreePath) (TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  path)
          Adds path to the current selection.
 void addSelectionPaths sample code for javax.swing.tree.TreeSelectionModel.addSelectionPaths(javax.swing.tree.TreePath[]) definition code for javax.swing.tree.TreeSelectionModel.addSelectionPaths(javax.swing.tree.TreePath[]) (TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath [] paths)
          Adds paths to the current selection.
 void addTreeSelectionListener sample code for javax.swing.tree.TreeSelectionModel.addTreeSelectionListener(javax.swing.event.TreeSelectionListener) definition code for javax.swing.tree.TreeSelectionModel.addTreeSelectionListener(javax.swing.event.TreeSelectionListener) (TreeSelectionListener sample code for javax.swing.event.TreeSelectionListener definition code for javax.swing.event.TreeSelectionListener  x)
          Adds x to the list of listeners that are notified each time the set of selected TreePaths changes.
 void clearSelection sample code for javax.swing.tree.TreeSelectionModel.clearSelection() definition code for javax.swing.tree.TreeSelectionModel.clearSelection() ()
          Empties the current selection.
 TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath getLeadSelectionPath sample code for javax.swing.tree.TreeSelectionModel.getLeadSelectionPath() definition code for javax.swing.tree.TreeSelectionModel.getLeadSelectionPath() ()
          Returns the last path that was added.
 int getLeadSelectionRow sample code for javax.swing.tree.TreeSelectionModel.getLeadSelectionRow() definition code for javax.swing.tree.TreeSelectionModel.getLeadSelectionRow() ()
          Returns the lead selection index.
 int getMaxSelectionRow sample code for javax.swing.tree.TreeSelectionModel.getMaxSelectionRow() definition code for javax.swing.tree.TreeSelectionModel.getMaxSelectionRow() ()
          Returns the largest value obtained from the RowMapper for the current set of selected TreePaths.
 int getMinSelectionRow sample code for javax.swing.tree.TreeSelectionModel.getMinSelectionRow() definition code for javax.swing.tree.TreeSelectionModel.getMinSelectionRow() ()
          Returns the smallest value obtained from the RowMapper for the current set of selected TreePaths.
 RowMapper sample code for javax.swing.tree.RowMapper definition code for javax.swing.tree.RowMapper getRowMapper sample code for javax.swing.tree.TreeSelectionModel.getRowMapper() definition code for javax.swing.tree.TreeSelectionModel.getRowMapper() ()
          Returns the RowMapper instance that is able to map a TreePath to a row.
 int getSelectionCount sample code for javax.swing.tree.TreeSelectionModel.getSelectionCount() definition code for javax.swing.tree.TreeSelectionModel.getSelectionCount() ()
          Returns the number of paths that are selected.
 int getSelectionMode sample code for javax.swing.tree.TreeSelectionModel.getSelectionMode() definition code for javax.swing.tree.TreeSelectionModel.getSelectionMode() ()
          Returns the current selection mode, one of SINGLE_TREE_SELECTION, CONTIGUOUS_TREE_SELECTION or DISCONTIGUOUS_TREE_SELECTION.
 TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath getSelectionPath sample code for javax.swing.tree.TreeSelectionModel.getSelectionPath() definition code for javax.swing.tree.TreeSelectionModel.getSelectionPath() ()
          Returns the first path in the selection.
 TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath [] getSelectionPaths sample code for javax.swing.tree.TreeSelectionModel.getSelectionPaths() definition code for javax.swing.tree.TreeSelectionModel.getSelectionPaths() ()
          Returns the paths in the selection.
 int[] getSelectionRows sample code for javax.swing.tree.TreeSelectionModel.getSelectionRows() definition code for javax.swing.tree.TreeSelectionModel.getSelectionRows() ()
          Returns all of the currently selected rows.
 boolean isPathSelected sample code for javax.swing.tree.TreeSelectionModel.isPathSelected(javax.swing.tree.TreePath) definition code for javax.swing.tree.TreeSelectionModel.isPathSelected(javax.swing.tree.TreePath) (TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  path)
          Returns true if the path, path, is in the current selection.
 boolean isRowSelected sample code for javax.swing.tree.TreeSelectionModel.isRowSelected(int) definition code for javax.swing.tree.TreeSelectionModel.isRowSelected(int) (int row)
          Returns true if the row identified by row is selected.
 boolean isSelectionEmpty sample code for javax.swing.tree.TreeSelectionModel.isSelectionEmpty() definition code for javax.swing.tree.TreeSelectionModel.isSelectionEmpty() ()
          Returns true if the selection is currently empty.
 void removePropertyChangeListener sample code for javax.swing.tree.TreeSelectionModel.removePropertyChangeListener(java.beans.PropertyChangeListener) definition code for javax.swing.tree.TreeSelectionModel.removePropertyChangeListener(java.beans.PropertyChangeListener) (PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
          Removes a PropertyChangeListener from the listener list.
 void removeSelectionPath sample code for javax.swing.tree.TreeSelectionModel.removeSelectionPath(javax.swing.tree.TreePath) definition code for javax.swing.tree.TreeSelectionModel.removeSelectionPath(javax.swing.tree.TreePath) (TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  path)
          Removes path from the selection.
 void removeSelectionPaths sample code for javax.swing.tree.TreeSelectionModel.removeSelectionPaths(javax.swing.tree.TreePath[]) definition code for javax.swing.tree.TreeSelectionModel.removeSelectionPaths(javax.swing.tree.TreePath[]) (TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath [] paths)
          Removes paths from the selection.
 void removeTreeSelectionListener sample code for javax.swing.tree.TreeSelectionModel.removeTreeSelectionListener(javax.swing.event.TreeSelectionListener) definition code for javax.swing.tree.TreeSelectionModel.removeTreeSelectionListener(javax.swing.event.TreeSelectionListener) (TreeSelectionListener sample code for javax.swing.event.TreeSelectionListener definition code for javax.swing.event.TreeSelectionListener  x)
          Removes x from the list of listeners that are notified each time the set of selected TreePaths changes.
 void resetRowSelection sample code for javax.swing.tree.TreeSelectionModel.resetRowSelection() definition code for javax.swing.tree.TreeSelectionModel.resetRowSelection() ()
          Updates this object's mapping from TreePaths to rows.
 void setRowMapper sample code for javax.swing.tree.TreeSelectionModel.setRowMapper(javax.swing.tree.RowMapper) definition code for javax.swing.tree.TreeSelectionModel.setRowMapper(javax.swing.tree.RowMapper) (RowMapper sample code for javax.swing.tree.RowMapper definition code for javax.swing.tree.RowMapper  newMapper)
          Sets the RowMapper instance.
 void setSelectionMode sample code for javax.swing.tree.TreeSelectionModel.setSelectionMode(int) definition code for javax.swing.tree.TreeSelectionModel.setSelectionMode(int) (int mode)
          Sets the selection model, which must be one of SINGLE_TREE_SELECTION, CONTIGUOUS_TREE_SELECTION or DISCONTIGUOUS_TREE_SELECTION.
 void setSelectionPath sample code for javax.swing.tree.TreeSelectionModel.setSelectionPath(javax.swing.tree.TreePath) definition code for javax.swing.tree.TreeSelectionModel.setSelectionPath(javax.swing.tree.TreePath) (TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  path)
          Sets the selection to path.
 void setSelectionPaths sample code for javax.swing.tree.TreeSelectionModel.setSelectionPaths(javax.swing.tree.TreePath[]) definition code for javax.swing.tree.TreeSelectionModel.setSelectionPaths(javax.swing.tree.TreePath[]) (TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath [] paths)
          Sets the selection to path.
 

Field Detail

SINGLE_TREE_SELECTION sample code for javax.swing.tree.TreeSelectionModel.SINGLE_TREE_SELECTION 

static final int SINGLE_TREE_SELECTION
Selection can only contain one path at a time.

See Also:
Constant Field Values

CONTIGUOUS_TREE_SELECTION sample code for javax.swing.tree.TreeSelectionModel.CONTIGUOUS_TREE_SELECTION 

static final int CONTIGUOUS_TREE_SELECTION
Selection can only be contiguous. This will only be enforced if a RowMapper instance is provided. That is, if no RowMapper is set this behaves the same as DISCONTIGUOUS_TREE_SELECTION.

See Also:
Constant Field Values

DISCONTIGUOUS_TREE_SELECTION sample code for javax.swing.tree.TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION 

static final int DISCONTIGUOUS_TREE_SELECTION
Selection can contain any number of items that are not necessarily contiguous.

See Also:
Constant Field Values
Method Detail

setSelectionMode sample code for javax.swing.tree.TreeSelectionModel.setSelectionMode(int) definition code for javax.swing.tree.TreeSelectionModel.setSelectionMode(int) 

void setSelectionMode(int mode)
Sets the selection model, which must be one of SINGLE_TREE_SELECTION, CONTIGUOUS_TREE_SELECTION or DISCONTIGUOUS_TREE_SELECTION.

This may change the selection if the current selection is not valid for the new mode. For example, if three TreePaths are selected when the mode is changed to SINGLE_TREE_SELECTION, only one TreePath will remain selected. It is up to the particular implementation to decide what TreePath remains selected.

getSelectionMode sample code for javax.swing.tree.TreeSelectionModel.getSelectionMode() definition code for javax.swing.tree.TreeSelectionModel.getSelectionMode() 

int getSelectionMode()
Returns the current selection mode, one of SINGLE_TREE_SELECTION, CONTIGUOUS_TREE_SELECTION or DISCONTIGUOUS_TREE_SELECTION.

setSelectionPath sample code for javax.swing.tree.TreeSelectionModel.setSelectionPath(javax.swing.tree.TreePath) definition code for javax.swing.tree.TreeSelectionModel.setSelectionPath(javax.swing.tree.TreePath) 

void setSelectionPath(TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  path)
Sets the selection to path. If this represents a change, then the TreeSelectionListeners are notified. If path is null, this has the same effect as invoking clearSelection.

Parameters:
path - new path to select

setSelectionPaths sample code for javax.swing.tree.TreeSelectionModel.setSelectionPaths(javax.swing.tree.TreePath[]) definition code for javax.swing.tree.TreeSelectionModel.setSelectionPaths(javax.swing.tree.TreePath[]) 

void setSelectionPaths(TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath [] paths)
Sets the selection to path. If this represents a change, then the TreeSelectionListeners are notified. If paths is null, this has the same effect as invoking clearSelection.

Parameters:
paths - new selection

addSelectionPath sample code for javax.swing.tree.TreeSelectionModel.addSelectionPath(javax.swing.tree.TreePath) definition code for javax.swing.tree.TreeSelectionModel.addSelectionPath(javax.swing.tree.TreePath) 

void addSelectionPath(TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  path)
Adds path to the current selection. If path is not currently in the selection the TreeSelectionListeners are notified. This has no effect if path is null.

Parameters:
path - the new path to add to the current selection

addSelectionPaths sample code for javax.swing.tree.TreeSelectionModel.addSelectionPaths(javax.swing.tree.TreePath[]) definition code for javax.swing.tree.TreeSelectionModel.addSelectionPaths(javax.swing.tree.TreePath[]) 

void addSelectionPaths(TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath [] paths)
Adds paths to the current selection. If any of the paths in paths are not currently in the selection the TreeSelectionListeners are notified. This has no effect if paths is null.

Parameters:
paths - the new paths to add to the current selection

removeSelectionPath sample code for javax.swing.tree.TreeSelectionModel.removeSelectionPath(javax.swing.tree.TreePath) definition code for javax.swing.tree.TreeSelectionModel.removeSelectionPath(javax.swing.tree.TreePath) 

void removeSelectionPath(TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  path)
Removes path from the selection. If path is in the selection The TreeSelectionListeners are notified. This has no effect if path is null.

Parameters:
path - the path to remove from the selection

removeSelectionPaths sample code for javax.swing.tree.TreeSelectionModel.removeSelectionPaths(javax.swing.tree.TreePath[]) definition code for javax.swing.tree.TreeSelectionModel.removeSelectionPaths(javax.swing.tree.TreePath[]) 

void removeSelectionPaths(TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath [] paths)
Removes paths from the selection. If any of the paths in paths are in the selection, the TreeSelectionListeners are notified. This method has no effect if paths is null.

Parameters:
paths - the path to remove from the selection

getSelectionPath sample code for javax.swing.tree.TreeSelectionModel.getSelectionPath() definition code for javax.swing.tree.TreeSelectionModel.getSelectionPath() 

TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  getSelectionPath()
Returns the first path in the selection. How first is defined is up to implementors, and may not necessarily be the TreePath with the smallest integer value as determined from the RowMapper.

getSelectionPaths sample code for javax.swing.tree.TreeSelectionModel.getSelectionPaths() definition code for javax.swing.tree.TreeSelectionModel.getSelectionPaths() 

TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath [] getSelectionPaths()
Returns the paths in the selection. This will return null (or an empty array) if nothing is currently selected.

getSelectionCount sample code for javax.swing.tree.TreeSelectionModel.getSelectionCount() definition code for javax.swing.tree.TreeSelectionModel.getSelectionCount() 

int getSelectionCount()
Returns the number of paths that are selected.

isPathSelected sample code for javax.swing.tree.TreeSelectionModel.isPathSelected(javax.swing.tree.TreePath) definition code for javax.swing.tree.TreeSelectionModel.isPathSelected(javax.swing.tree.TreePath) 

boolean isPathSelected(TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  path)
Returns true if the path, path, is in the current selection.

isSelectionEmpty sample code for javax.swing.tree.TreeSelectionModel.isSelectionEmpty() definition code for javax.swing.tree.TreeSelectionModel.isSelectionEmpty() 

boolean isSelectionEmpty()
Returns true if the selection is currently empty.

clearSelection sample code for javax.swing.tree.TreeSelectionModel.clearSelection() definition code for javax.swing.tree.TreeSelectionModel.clearSelection() 

void clearSelection()
Empties the current selection. If this represents a change in the current selection, the selection listeners are notified.

setRowMapper sample code for javax.swing.tree.TreeSelectionModel.setRowMapper(javax.swing.tree.RowMapper) definition code for javax.swing.tree.TreeSelectionModel.setRowMapper(javax.swing.tree.RowMapper) 

void setRowMapper(RowMapper sample code for javax.swing.tree.RowMapper definition code for javax.swing.tree.RowMapper  newMapper)
Sets the RowMapper instance. This instance is used to determine the row for a particular TreePath.

getRowMapper sample code for javax.swing.tree.TreeSelectionModel.getRowMapper() definition code for javax.swing.tree.TreeSelectionModel.getRowMapper() 

RowMapper sample code for javax.swing.tree.RowMapper definition code for javax.swing.tree.RowMapper  getRowMapper()
Returns the RowMapper instance that is able to map a TreePath to a row.

getSelectionRows sample code for javax.swing.tree.TreeSelectionModel.getSelectionRows() definition code for javax.swing.tree.TreeSelectionModel.getSelectionRows() 

int[] getSelectionRows()
Returns all of the currently selected rows. This will return null (or an empty array) if there are no selected TreePaths or a RowMapper has not been set.

getMinSelectionRow sample code for javax.swing.tree.TreeSelectionModel.getMinSelectionRow() definition code for javax.swing.tree.TreeSelectionModel.getMinSelectionRow() 

int getMinSelectionRow()
Returns the smallest value obtained from the RowMapper for the current set of selected TreePaths. If nothing is selected, or there is no RowMapper, this will return -1.

getMaxSelectionRow sample code for javax.swing.tree.TreeSelectionModel.getMaxSelectionRow() definition code for javax.swing.tree.TreeSelectionModel.getMaxSelectionRow() 

int getMaxSelectionRow()
Returns the largest value obtained from the RowMapper for the current set of selected TreePaths. If nothing is selected, or there is no RowMapper, this will return -1.

isRowSelected sample code for javax.swing.tree.TreeSelectionModel.isRowSelected(int) definition code for javax.swing.tree.TreeSelectionModel.isRowSelected(int) 

boolean isRowSelected(int row)
Returns true if the row identified by row is selected.

resetRowSelection sample code for javax.swing.tree.TreeSelectionModel.resetRowSelection() definition code for javax.swing.tree.TreeSelectionModel.resetRowSelection() 

void resetRowSelection()
Updates this object's mapping from TreePaths to rows. This should be invoked when the mapping from TreePaths to integers has changed (for example, a node has been expanded).

You do not normally have to call this; JTree and its associated listeners will invoke this for you. If you are implementing your own view class, then you will have to invoke this.

getLeadSelectionRow sample code for javax.swing.tree.TreeSelectionModel.getLeadSelectionRow() definition code for javax.swing.tree.TreeSelectionModel.getLeadSelectionRow() 

int getLeadSelectionRow()
Returns the lead selection index. That is the last index that was added.

getLeadSelectionPath sample code for javax.swing.tree.TreeSelectionModel.getLeadSelectionPath() definition code for javax.swing.tree.TreeSelectionModel.getLeadSelectionPath() 

TreePath sample code for javax.swing.tree.TreePath definition code for javax.swing.tree.TreePath  getLeadSelectionPath()
Returns the last path that was added. This may differ from the leadSelectionPath property maintained by the JTree.

addPropertyChangeListener sample code for javax.swing.tree.TreeSelectionModel.addPropertyChangeListener(java.beans.PropertyChangeListener) definition code for javax.swing.tree.TreeSelectionModel.addPropertyChangeListener(java.beans.PropertyChangeListener) 

void addPropertyChangeListener(PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
Adds a PropertyChangeListener to the listener list. The listener is registered for all properties.

A PropertyChangeEvent will get fired when the selection mode changes.

Parameters:
listener - the PropertyChangeListener to be added

removePropertyChangeListener sample code for javax.swing.tree.TreeSelectionModel.removePropertyChangeListener(java.beans.PropertyChangeListener) definition code for javax.swing.tree.TreeSelectionModel.removePropertyChangeListener(java.beans.PropertyChangeListener) 

void removePropertyChangeListener(PropertyChangeListener sample code for java.beans.PropertyChangeListener definition code for java.beans.PropertyChangeListener  listener)
Removes a PropertyChangeListener from the listener list. This removes a PropertyChangeListener that was registered for all properties.

Parameters:
listener - the PropertyChangeListener to be removed

addTreeSelectionListener sample code for javax.swing.tree.TreeSelectionModel.addTreeSelectionListener(javax.swing.event.TreeSelectionListener) definition code for javax.swing.tree.TreeSelectionModel.addTreeSelectionListener(javax.swing.event.TreeSelectionListener) 

void addTreeSelectionListener(TreeSelectionListener sample code for javax.swing.event.TreeSelectionListener definition code for javax.swing.event.TreeSelectionListener  x)
Adds x to the list of listeners that are notified each time the set of selected TreePaths changes.

Parameters:
x - the new listener to be added

removeTreeSelectionListener sample code for javax.swing.tree.TreeSelectionModel.removeTreeSelectionListener(javax.swing.event.TreeSelectionListener) definition code for javax.swing.tree.TreeSelectionModel.removeTreeSelectionListener(javax.swing.event.TreeSelectionListener) 

void removeTreeSelectionListener(TreeSelectionListener sample code for javax.swing.event.TreeSelectionListener definition code for javax.swing.event.TreeSelectionListener  x)
Removes x from the list of listeners that are notified each time the set of selected TreePaths changes.

Parameters:
x - the listener to remove
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