Package org.zkoss.zkmax.zul.impl

Class LiveListboxDataLoader

java.lang.Object

org.zkoss.zul.impl.ListboxDataLoader

org.zkoss.zkmax.zul.impl.LiveListboxDataLoader

All Implemented Interfaces:

Cropper, DataLoader

public class LiveListboxDataLoader
extends ListboxDataLoader

Data Loader that handle the live data loading into Listbox.

Available in ZK EE

Since:

6.0.1

Author:

henrichen

Nested Class Summary

Nested classes/interfaces inherited from class org.zkoss.zul.impl.ListboxDataLoader

ListboxDataLoader.DeferredRedraw

Constructor Summary

Constructors

Constructor	Description
LiveListboxDataLoader()

Method Summary

Modifier and Type	Method	Description
void	doListDataChange(ListDataEvent event)	Handle event when ListDataEvent is fired from owner component.
protected java.util.Set<? extends Component>	getAvailableAtClient(boolean itemOnly)	Retrieves the children available at client with more control.
int	getLimit()	Returns the required visible limit size of the current loaded data chunk to be shown on the screen.
int	getOffset()	Returns the requested visible offset of the current loaded data chunk.
void	init(Component owner, int offset, int limit)	Callback from the owner component and give a chance to initialize things.
boolean	isCropper()	Returns whether it is a cropper, i.e., cropping is applied.
void	reset()	Callback from the owner component and give a chance to reset things.
void	setLoadAll(boolean b)	Sets whether to always load all items from ListModel.
void	syncModel(int offset, int limit)	Synchronizes the owner component to be consistent with the specified model.
void	updateModelInfo()	Used to update some extra control information to the client.

Methods inherited from class org.zkoss.zul.impl.ListboxDataLoader

doGroupsDataChange, getAvailableAtClient, getAvailableAtClient, getCropOwner, getOwner, getRealRenderer, getTotalSize, inPagingMold, inSelectMold, newUnloadedItem

Methods inherited from class java.lang.Object

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

Constructor Detail

LiveListboxDataLoader

public LiveListboxDataLoader()

Method Detail

init

public void init(Component owner,
                 int offset,
                 int limit)

Description copied from interface: DataLoader

Callback from the owner component and give a chance to initialize things.

Specified by:

init in interface DataLoader

Overrides:

init in class ListboxDataLoader

Parameters:

owner - the owner component of this DataLoader.

reset

public void reset()

Description copied from interface: DataLoader

Callback from the owner component and give a chance to reset things.

Specified by:

reset in interface DataLoader

Overrides:

reset in class ListboxDataLoader

getOffset

public int getOffset()

Description copied from interface: DataLoader

Returns the requested visible offset of the current loaded data chunk.

Specified by:

getOffset in interface DataLoader

Overrides:

getOffset in class ListboxDataLoader

Returns:

the requested visible offset of the current loaded data chunk.

getLimit

public int getLimit()

Description copied from interface: DataLoader

Returns the required visible limit size of the current loaded data chunk to be shown on the screen.

Specified by:

getLimit in interface DataLoader

Overrides:

getLimit in class ListboxDataLoader

Returns:

the required visible limit size of the current loaded data chunk to be shown on the screen.

doListDataChange

public void doListDataChange(ListDataEvent event)

Description copied from interface: DataLoader

Handle event when ListDataEvent is fired from owner component.

Specified by:

doListDataChange in interface DataLoader

Overrides:

doListDataChange in class ListboxDataLoader

syncModel

public void syncModel(int offset,
                      int limit)

Description copied from interface: DataLoader

Synchronizes the owner component to be consistent with the specified model.

Specified by:

syncModel in interface DataLoader

Overrides:

syncModel in class ListboxDataLoader

Parameters:

offset - the starting index of the range to do data synchronize.

limit - the size of the range to do data synchronize. -1 means the current range.

updateModelInfo

public void updateModelInfo()

Description copied from interface: DataLoader

Used to update some extra control information to the client.

Specified by:

updateModelInfo in interface DataLoader

Overrides:

updateModelInfo in class ListboxDataLoader

setLoadAll

public void setLoadAll(boolean b)

Description copied from interface: DataLoader

Sets whether to always load all items from ListModel.

Specified by:

setLoadAll in interface DataLoader

Overrides:

setLoadAll in class ListboxDataLoader

isCropper

public boolean isCropper()

Description copied from interface: Cropper

Returns whether it is a cropper, i.e., cropping is applied.

Note: this method is called when an child is detached, so you have to count one more for the total number of children. Example <= must be used, not <:
getChildCount() <= getPageSize()

The result of returning false is the same as not declaring with Cropper.

Specified by:

isCropper in interface Cropper

Overrides:

isCropper in class ListboxDataLoader

getAvailableAtClient

protected java.util.Set<? extends Component> getAvailableAtClient(boolean itemOnly)

Description copied from class: ListboxDataLoader

Retrieves the children available at client with more control.

Derived class shall override this method rather than ListboxDataLoader.getAvailableAtClient().

Overrides:

getAvailableAtClient in class ListboxDataLoader

Parameters:

itemOnly - whether to return only Listitem and derives.