org.zkoss.bind.impl

Class IndirectBinding

java.lang.Object

org.zkoss.bind.impl.IndirectBinding

All Implemented Interfaces:

Serializable, Binding, LoadBinding, ReferenceBinding

public abstract class IndirectBinding
extends Object
implements ReferenceBinding, Serializable

An indirect binding, a kind of reference binding, but it won't create a sub-tracking tree to get two way bindings, and it is used for children binding internally. i.e. this class is designed for some specific cases.

Since:

8.0.0

Author:

jumperchen

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IndirectBinding(Object data)

Method Summary

Modifier and Type	Method and Description
Map<String,Object>	getArgs() Null is returned by default.
Object	getData() Returns the data
protected abstract org.zkoss.zul.ListModel	getModel()
String	getPropertyString() Null is returned by default.
Object	getValue(BindELContext ctx) Returns the referenced value.
void	invalidateCache() do nothing for this method
void	load(BindContext ctx) do nothing for this method
void	setData(Object data) Sets the data
void	setValue(BindELContext ctx, Object value) Sets the value to referenced object

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.zkoss.bind.sys.Binding

getBinder, getComponent

Constructor Detail

IndirectBinding

public IndirectBinding(Object data)

Method Detail

getData

public Object getData()

Returns the data

getModel

protected abstract org.zkoss.zul.ListModel getModel()

setData

public void setData(Object data)

Sets the data

load

public void load(BindContext ctx)

do nothing for this method

Specified by:

load in interface LoadBinding

Parameters:

ctx - the binding runtime context

setValue

public void setValue(BindELContext ctx,
                     Object value)

Description copied from interface: ReferenceBinding

Sets the value to referenced object

Specified by:

setValue in interface ReferenceBinding

Parameters:

ctx - the context to evaluate the reference expression.

getValue

public Object getValue(BindELContext ctx)

Description copied from interface: ReferenceBinding

Returns the referenced value.

Specified by:

getValue in interface ReferenceBinding

Parameters:

ctx - the context to evaluate the reference expression.

Returns:

the referenced value.

getArgs

public Map<String,Object> getArgs()

Null is returned by default. (never be used)

Specified by:

getArgs in interface Binding

Returns:

an argument pairs map(read only).

getPropertyString

public String getPropertyString()

Null is returned by default. (never be used)

Specified by:

getPropertyString in interface ReferenceBinding

Returns:

the reference expression script of this binding.

invalidateCache

public void invalidateCache()

do nothing for this method

Specified by:

invalidateCache in interface ReferenceBinding