com.jidesoft.swing

Class ListSearchable

java.lang.Object

com.jidesoft.swing.Searchable

com.jidesoft.swing.ListSearchable

All Implemented Interfaces:

PropertyChangeListener, EventListener, ListDataListener

public class ListSearchable
extends Searchable
implements ListDataListener, PropertyChangeListener

ListSearchable is an concrete implementation of Searchable that enables the search function in JList.

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

 JList list = ....;
 ListSearchable searchable = new ListSearchable(list);
 

Now the JList will have the search function.

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

 JList list = ....;
 ListSearchable searchable = new ListSearchable(list) {
      protected String convertElementToString(Object object) {
          ...
      }
 };
 

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

JList 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.

 JList list = new JList(...) {
     public int getNextMatch(String prefix, int startIndex, Position.Bias bias) {
         return -1;
     }
 };
 

Nested Class Summary

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

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
ListSearchable(JList list)

Method Summary

Methods

Modifier and Type	Method and Description
void	contentsChanged(ListDataEvent e)
protected String	convertElementToString(Object object) Converts the element in Jlist to string.
protected 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.
void	intervalAdded(ListDataEvent e)
void	intervalRemoved(ListDataEvent e)
boolean	isUseRendererAsConverter() Get the flag if the ListSearchable should use the renderer in the list as its converter.
void	propertyChange(PropertyChangeEvent evt)
void	setSelectedIndex(int index, boolean incremental) Sets the selected index.
void	setUseRendererAsConverter(boolean useRendererAsConverter) Set the flag if the ListSearchable should use the renderer in the list as its converter.
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

ListSearchable

public ListSearchable(JList list)

Method Detail

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

public 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 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.

convertElementToString

protected String convertElementToString(Object object)

Converts the element in Jlist to string. The returned value will be the toString() of whatever element that returned from list.getModel().getElementAt(i).

Specified by:

convertElementToString in class Searchable

Parameters:

object - the object to be converted to string

Returns:

the string representing the element in the JList.

contentsChanged

public void contentsChanged(ListDataEvent e)

Specified by:

contentsChanged in interface ListDataListener

intervalAdded

public void intervalAdded(ListDataEvent e)

Specified by:

intervalAdded in interface ListDataListener

intervalRemoved

public void intervalRemoved(ListDataEvent e)

Specified by:

intervalRemoved in interface ListDataListener

propertyChange

public void propertyChange(PropertyChangeEvent evt)

Specified by:

propertyChange in interface PropertyChangeListener

isUseRendererAsConverter

public boolean isUseRendererAsConverter()

Get the flag if the ListSearchable should use the renderer in the list as its converter.

The default value for this field is false so we can get higher performance. For AutoFilterBox, we will set it to false automatically.

Returns:

true if you want to use the renderer as its converter. Otherwise false.

setUseRendererAsConverter

public void setUseRendererAsConverter(boolean useRendererAsConverter)

Set the flag if the ListSearchable should use the renderer in the list as its converter.

Parameters:

useRendererAsConverter - the flag

See Also:

isUseRendererAsConverter()