com.webmethods.caf.faces.data.tree.object
Class TreeContentProviderHelper

java.lang.Object
  com.webmethods.caf.faces.data.tree.object.TreeContentProviderHelper

public class TreeContentProviderHelper
extends Object

Helps implement ITreeContentProvider.

Field Summary

protected Map	m_lastChildAncestors Temporary cache of String row ids, mapped to boolean[] open ancestors state.
protected Collection	m_open
protected Collection	m_unopen
protected boolean	m_useUnopen
protected Map	m_visibleAndOpenAncestors Temporary cache of String row ids, mapped to boolean[] visible-and-open ancestors state.
protected static boolean[]	ZERO_BOOLEAN_ARRAY

Constructor Summary

TreeContentProviderHelper()

Method Summary

int	getDepth(ITreeContentProvider provider)
boolean	getHasChildren(ITreeContentProvider provider)
boolean[]	getLastChildAncestors(ITreeContentProvider provider)
Collection	getOpenIds(ITreeContentProvider provider)
Collection	getUnopenIds(ITreeContentProvider provider)
boolean	getUseUnopenModel(ITreeContentProvider provider)
boolean	isOpen(ITreeContentProvider provider)
boolean	isVisible(ITreeContentProvider provider)
void	refresh() Notify the helper that some content may have changed.
void	setOpen(ITreeContentProvider provider, boolean open) Set the open state for the provider
void	setOpenIds(ITreeContentProvider provider, Collection ids)
void	setUnopenIds(ITreeContentProvider provider, Collection ids)

Methods inherited from class java.lang.Object

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

Field Detail

ZERO_BOOLEAN_ARRAY

protected static final boolean[] ZERO_BOOLEAN_ARRAY

m_useUnopen

protected boolean m_useUnopen

m_open

protected Collection m_open

m_unopen

protected Collection m_unopen

m_lastChildAncestors

protected Map m_lastChildAncestors

Temporary cache of String row ids, mapped to boolean[] open ancestors state.

m_visibleAndOpenAncestors

protected Map m_visibleAndOpenAncestors

Temporary cache of String row ids, mapped to boolean[] visible-and-open ancestors state.

Constructor Detail

TreeContentProviderHelper

public TreeContentProviderHelper()

Method Detail

getDepth

public int getDepth(ITreeContentProvider provider)

Returns:

the length of provider's last child ancestors

See Also:

ITreeContentProvider.getLastChildAncestors()

getHasChildren

public boolean getHasChildren(ITreeContentProvider provider)

Parameters:

provider -

Returns:

a flag indicates whether there is next child

See Also:

ITreeContentProvider.getChildIds()

getLastChildAncestors

public boolean[] getLastChildAncestors(ITreeContentProvider provider)

See Also:

ITreeContentProvider.getLastChildAncestors()

isOpen

public boolean isOpen(ITreeContentProvider provider)

See Also:

ITreeContentProvider.isOpen()

setOpen

public void setOpen(ITreeContentProvider provider,
                    boolean open)

Set the open state for the provider

Parameters:

provider -

open -

See Also:

ITreeContentProvider.setOpen(boolean)

isVisible

public boolean isVisible(ITreeContentProvider provider)

Parameters:

provider -

Returns:

a flag indicates whether current row is visible for the provider

getOpenIds

public Collection getOpenIds(ITreeContentProvider provider)

setOpenIds

public void setOpenIds(ITreeContentProvider provider,
                       Collection ids)

getUseUnopenModel

public boolean getUseUnopenModel(ITreeContentProvider provider)

getUnopenIds

public Collection getUnopenIds(ITreeContentProvider provider)

setUnopenIds

public void setUnopenIds(ITreeContentProvider provider,
                         Collection ids)

refresh

public void refresh()

Notify the helper that some content may have changed.