com.jidesoft.swing

Class TreeSearchable

java.lang.Object

com.jidesoft.swing.Searchable

com.jidesoft.swing.TreeSearchable

All Implemented Interfaces:

java.beans.PropertyChangeListener, java.util.EventListener, javax.swing.event.TreeModelListener

public class TreeSearchable
extends Searchable
implements javax.swing.event.TreeModelListener, java.beans.PropertyChangeListener

TreeSearchable is an concrete implementation of Searchable that enables the search function in JTree.

It's very simple to use it. Assuming you have a JTree, all you need to do is to call

 JTree tree = ....;
 TreeSearchable searchable = new TreeSearchable(tree);
 

Now the JTree will have the search function.

There is very little customization you need to do to TreeSearchable. The only thing you might need is when the element in the JTree needs a special conversion to convert to string. If so, you can override convertElementToString() to provide you own algorithm to do the conversion.

 JTree tree = ....;
 TreeSearchable searchable = new TreeSearchable(tree) {
      protected String convertElementToString(Object object) {
          ...
      }
 };
 

Additional customization can be done on the base Searchable class such as background and foreground color, keystrokes, case sensitivity.

JTree actually has a simple searchable feature but has flaws. It will affect our searchable feature. To workaround it, you can override getNextMatch method and always return -1 when you create your JList.

 JTree tree = new JTree(...) {
    public TreePath getNextMatch(String prefix, int startingRow, Position.Bias bias) {
        return null;
    }
 };
 

Nested Class Summary

Nested classes/interfaces inherited from class com.jidesoft.swing.Searchable

Searchable.DefaultSearchPopup, Searchable.SearchField, Searchable.SearchPopup

Field Summary

Fields inherited from class com.jidesoft.swing.Searchable

_component, _componentListener, _focusListener, _keyListener, _matchCount, CLIENT_PROPERTY_SEARCHABLE, listenerList, PROPERTY_SEARCH_TEXT

Constructor Summary

Constructors

Constructor and Description
TreeSearchable(javax.swing.JTree tree)

Method Summary

Modifier and Type	Method and Description
protected java.lang.String	convertElementToString(java.lang.Object object) Converts the element in JTree to string.
protected java.lang.Object	getElementAt(int index) Gets the element at the specified index.
protected int	getElementCount() Gets the total element count in the component.
protected int	getSelectedIndex() Gets the selected index in the component.
protected java.util.List<javax.swing.tree.TreePath>	getTreePathes() Gets the cached tree paths list.
boolean	isRecursive() Checks if the searchable is recursive.
protected void	populateTreePaths() Recursively go through the tree to populate the tree paths into a list and cache them.
void	propertyChange(java.beans.PropertyChangeEvent evt)
protected void	resetTreePathes() Reset the cached tree paths list.
void	setRecursive(boolean recursive) Sets the recursive attribute.
protected void	setSelectedIndex(int index, boolean incremental) Sets the selected index.
void	treeNodesChanged(javax.swing.event.TreeModelEvent e)
void	treeNodesInserted(javax.swing.event.TreeModelEvent e)
void	treeNodesRemoved(javax.swing.event.TreeModelEvent e)
void	treeStructureChanged(javax.swing.event.TreeModelEvent e)
void	uninstallListeners() Uninstall the listeners that installed before.

Methods inherited from class com.jidesoft.swing.Searchable

addPropertyChangeListener, addSearchableListener, adjustSelectedIndex, cancelHighlightAll, compare, compare, convertToString, createComponentListener, createFocusListener, createKeyListener, createSearchPopup, findAll, findFirst, findFirstExactly, findFromCursor, findLast, findNext, findPrevious, firePropertyChangeEvent, fireSearchableEvent, getBackground, getComponent, getCurrentIndex, getCursor, getElementAtAsString, getForeground, getMismatchForeground, getPopupLocation, getPopupLocationRelativeTo, getPopupTimeout, getResourceString, getSearchable, getSearchableListeners, getSearchableProvider, getSearchingDelay, getSearchingText, getSearchLabel, getWildcardSupport, hidePopup, highlightAll, installListeners, isActivateKey, isCaseSensitive, isCountMatch, isDeactivateKey, isFindFirstKey, isFindLastKey, isFindNextKey, isFindPreviousKey, isFromStart, isHeavyweightComponentEnabled, isHideSearchPopupOnEvent, isIncrementalSelectKey, isNavigationKey, isPopupVisible, isProcessModelChangeEvent, isRepeats, isReverseOrder, isSearchableListenerInstalled, isSelectAllKey, isWildcardEnabled, keyTypedOrPressed, removePropertyChangeListener, removeSearchableListener, reverseFindFromCursor, searchingTextEmpty, select, setBackground, setCaseSensitive, setCountMatch, setCursor, setCursor, setForeground, setFromStart, setHeavyweightComponentEnabled, setHideSearchPopupOnEvent, setMismatchForeground, setPopupLocation, setPopupLocationRelativeTo, setPopupTimeout, setProcessModelChangeEvent, setRepeats, setReverseOrder, setSearchableProvider, setSearchingDelay, setSearchLabel, setWildcardEnabled, setWildcardSupport, showPopup, textChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeSearchable

public TreeSearchable(javax.swing.JTree tree)

Method Detail

isRecursive

public boolean isRecursive()

Checks if the searchable is recursive.

Returns:

true if searchable is recursive.

setRecursive

public void setRecursive(boolean recursive)

Sets the recursive attribute.

If TreeSearchable is recursive, it will consider all tree nodes including those which are not visible to find the matching node. Obviously, if your tree has unlimited number of tree nodes or a potential huge number of tree nodes (such as a tree to represent file system), the recursive attribute should be false. To avoid this potential problem in this case, we default it to false.

Parameters:

recursive - the attribute

uninstallListeners

public void uninstallListeners()

Description copied from class: Searchable

Uninstall the listeners that installed before. This method is never called because we don't have the control of the life cycle of the component. However you can call this method if you don't want the component to be searchable any more.

Overrides:

uninstallListeners in class Searchable

setSelectedIndex

protected void setSelectedIndex(int index,
                                boolean incremental)

Description copied from class: Searchable

Sets the selected index. The concrete implementation should call methods on the component to select the element at the specified index. The incremental flag is used to do multiple select. If the flag is true, the element at the index should be added to current selection. If false, you should clear previous selection and then select the element.

Specified by:

setSelectedIndex in class Searchable

Parameters:

index - the index to be selected

incremental - a flag to enable multiple selection. If the flag is true, the element at the index should be added to current selection. If false, you should clear previous selection and then select the element.

getSelectedIndex

protected int getSelectedIndex()

Description copied from class: Searchable

Gets the selected index in the component. The concrete implementation should call methods on the component to retrieve the current selected index. If the component supports multiple selection, it's OK just return the index of the first selection.

Here are some examples. In the case of JList, the index is the row index. In the case of JTree, the index is the row index too. In the case of JTable, depending on the selection mode, the index could be row index (in row selection mode), could be column index (in column selection mode) or could the cell index (in cell selection mode).

Specified by:

getSelectedIndex in class Searchable

Returns:

the selected index.

getElementAt

protected java.lang.Object getElementAt(int index)

Description copied from class: Searchable

Gets the element at the specified index. The element could be any data structure that internally used in the component. The convertElementToString method will give you a chance to convert the element to string which is used to compare with the string that user types in.

Specified by:

getElementAt in class Searchable

Parameters:

index - the index

Returns:

the element at the specified index.

getElementCount

protected int getElementCount()

Description copied from class: Searchable

Gets the total element count in the component. Different concrete implementation could have different interpretation of the count. This is totally OK as long as it's consistent in all the methods. For example, the index parameter in other methods should be always a valid value within the total count.

Specified by:

getElementCount in class Searchable

Returns:

the total element count.

populateTreePaths

protected void populateTreePaths()

Recursively go through the tree to populate the tree paths into a list and cache them.

Tree paths list is only used when recursive attribute is true.

resetTreePathes

protected void resetTreePathes()

Reset the cached tree paths list.

Tree paths list is only used when recursive atattributes true.

getTreePathes

protected java.util.List<javax.swing.tree.TreePath> getTreePathes()

Gets the cached tree paths list. If it has never been cached before, this method will create the cache.

Tree paths list is only used when recursive atattributes true.

Returns:

the tree paths list.

convertElementToString

protected java.lang.String convertElementToString(java.lang.Object object)

Converts the element in JTree to string. The element by default is TreePath. The returned value will be toString() of the last path component in the TreePath.

Specified by:

convertElementToString in class Searchable

Parameters:

object - the object to be converted

Returns:

the string representing the TreePath in the JTree.

treeNodesChanged

public void treeNodesChanged(javax.swing.event.TreeModelEvent e)

Specified by:

treeNodesChanged in interface javax.swing.event.TreeModelListener

treeNodesInserted

public void treeNodesInserted(javax.swing.event.TreeModelEvent e)

Specified by:

treeNodesInserted in interface javax.swing.event.TreeModelListener

treeNodesRemoved

public void treeNodesRemoved(javax.swing.event.TreeModelEvent e)

Specified by:

treeNodesRemoved in interface javax.swing.event.TreeModelListener

treeStructureChanged

public void treeStructureChanged(javax.swing.event.TreeModelEvent e)

Specified by:

treeStructureChanged in interface javax.swing.event.TreeModelListener

propertyChange

public void propertyChange(java.beans.PropertyChangeEvent evt)

Specified by:

propertyChange in interface java.beans.PropertyChangeListener