org.zkoss.zuti.zul

Interface NavigationLevel<T>

Type Parameters:

T - The data type

public interface NavigationLevel<T>

An object that represents the navigation level.

Since:

8.6.0

Author:

rudyhuang

Method Summary

Modifier and Type	Method and Description
NavigationLevel<T>	getChild() Gets the child navigation level if any.
Map<String,Object>	getContext() Gets the context of this level if any.
T	getCurrent() Gets the data associated with the current key if any.
String	getCurrentKey() Gets the current key.
Iterator<org.zkoss.util.Pair<String,T>>	getItemIterator() Gets the item iterator in this level.
List<org.zkoss.util.Pair<String,T>>	getItems() Gets the list of items in this level.
int	getLevel() Gets the level number.
NavigationLevel<T>	navigateTo(String key) Navigates to the specified key in the current level.
NavigationLevel<T>	setContext(Map<String,Object> context) Sets the context of this level.

Method Detail

getLevel

int getLevel()

Gets the level number. The first level is 1.

Returns:

the level number

getContext

Map<String,Object> getContext()

Gets the context of this level if any.

Returns:

the context map. Might be null

setContext

NavigationLevel<T> setContext(Map<String,Object> context)

Sets the context of this level.

Parameters:

context - the context map

Returns:

this object

getCurrentKey

String getCurrentKey()

Gets the current key. If no data exists in this level, the result is null.

Returns:

the current key. Might be null

getCurrent

T getCurrent()

Gets the data associated with the current key if any.

Returns:

the data object. Might be null

getChild

NavigationLevel<T> getChild()

Gets the child navigation level if any.

Returns:

the child navigation level. Might be null

navigateTo

NavigationLevel<T> navigateTo(String key)

Navigates to the specified key in the current level. If the specified key does not exist, it will throw an exception.

Parameters:

key - the item key

Returns:

this object

Throws:

IllegalArgumentException - if the key is invalid or not found in the level

getItemIterator

Iterator<org.zkoss.util.Pair<String,T>> getItemIterator()

Gets the item iterator in this level. The Pair.getX() is the key, and Pair.getY() is the data.

Returns:

the item iterator

getItems

List<org.zkoss.util.Pair<String,T>> getItems()

Gets the list of items in this level. Note: The performance is no good.

Returns:

the list of items