VisibilityQuery (NetBeans General Queries API) - NetBeans API Javadoc 4.1.0

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org.netbeans.api.queries
Class VisibilityQuery

java.lang.Object
  org.netbeans.api.queries.VisibilityQuery

public final class VisibilityQuery
extends Object

Determine whether files should be hidden in views presented to the user.

This query should be considered only as a recommendation. Particular views may decide to display all files and ignore this query.

See Also:: VisibilityQueryImplementation

Method Summary

void addChangeListener(ChangeListener l)
          Add a listener to changes.

static VisibilityQuery getDefault()
          Get default instance of VisibilityQuery.

boolean isVisible(FileObject file)
          Check whether a file is recommended to be visible.

void removeChangeListener(ChangeListener l)
          Stop listening to changes.

Methods inherited from class java.lang.Object

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

Method Detail

getDefault

public static final VisibilityQuery getDefault()

Get default instance of VisibilityQuery.

Returns:: instance of VisibilityQuery

isVisible

public boolean isVisible(FileObject file)

Check whether a file is recommended to be visible. Default return value is visible unless at least one VisibilityQueryImplementation provider says hidden.

Parameters:: file - a file which should be checked
Returns:: true if it is recommended to show this file

addChangeListener

public void addChangeListener(ChangeListener l)

Add a listener to changes.

Parameters:: l - a listener to add

removeChangeListener

public void removeChangeListener(ChangeListener l)

Stop listening to changes.

Parameters:: l - a listener to remove