ViewImpl

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ulu.view
Class ViewImpl

java.lang.Object
  ulu.view.ItemImpl
      ulu.view.ViewImpl

All Implemented Interfaces:: ContentSource, Handler, Invokable, Item, java.util.Observer, ulu.view.ui.Pager, Propertied, Referrer, Searchable, java.io.Serializable, Sortable, Typed, UContained, UContainer, View

public class ViewImpl
extends ItemImpl
implements View, ulu.view.ui.Pager

generic implementation of ulu.view.View interface

refactored April 2002

Field Summary

protected boolean cached
          flag used to denote whether a lazy, caching view has populated itself

protected boolean caching
          denotes whether a lazy component can cache its results.

boolean CaseSensitiveNames
          if false, hash all items by lower-case names for search purposes, but will preserve case of the name property (e.g.

(package private) ItemFilter filt
          filter operating on this view

(package private) boolean filtered
          flag denoting whether current filter has been applied (and visItems cache is therefore up to date)

(package private) java.util.Vector items
          stored items in this view, held as a Vector rather than a Hashtable because the latter won't guarantee a correct ordering of items that can be used for returning enumerations of a paged subsection.

protected boolean lazy
          denotes whether container ought to be populated at creation, or only as needed

(package private) java.util.Vector listeners
          list of listeners to this item

(package private) java.lang.Object pagemarker
          page marker object used to denote top of current page.

ulu.view.ui.Pager pager
          pager to delegate to

boolean passive
          By default, a View won't generate events, but assumes the back-end is passively-recieving requests to update from the UI client.

(package private) java.util.Vector visItems
          cache of items currently visible through filter, changed only when the filter changes.

Fields inherited from class ulu.view.ItemImpl

changes, defmeth, methods, PROP_REFSTRING, props, reference, sealed, types, useScrap

Fields inherited from interface ulu.view.Item

METHOD_ADD_TO_SCRAPBOOK

Fields inherited from interface ulu.view.UContained

PROP_PARENT

Fields inherited from interface ulu.view.Propertied

PROP_DISPLAY_LOD, PROP_NAME

Fields inherited from interface ulu.view.Typed

PROP_TYPE

Fields inherited from interface ulu.view.ContentSource

PROP_CONTENT_URL

Fields inherited from interface ulu.view.UContainer

METHOD_OPEN, METHOD_REFRESH, PROP_COUNT, PROP_DEFAULT_ITEM_PROPS

Fields inherited from interface ulu.view.ui.Pager

DEFAULT_PAGE_LENGTH, METHOD_NAME_BACK, METHOD_NAME_GOTO, METHOD_NAME_NEXT

Constructor Summary

ViewImpl()
          no-arg constructor required for ItemFactory

ViewImpl(java.lang.String name)
          constructor will add an 'open' method as well as the name property.

ViewImpl(java.lang.String name, boolean lazy)
           The constructor will add an 'open' and a 'refresh' method as well as the name property.

Method Summary

boolean addChild(UContained uc, boolean update)
          generic wrapper to conform to UContainer interface

void addDefaultMethods()
          add default methods for opening and refreshing container.

boolean addItem(Item it, boolean update)
          (attempt to) add an item to view - success status returned.

void addListener(UEventListener listener)
          add a listener

boolean addObject(java.lang.String name, java.lang.Object obj)
          add an arbitrary object to this view, using the ItemFactory system to wrap it up as an Item.

boolean addObject(java.lang.String name, java.lang.Object obj, boolean update)
          add an arbitrary object to this view, using the ItemFactory system to wrap it up as an Item

boolean back()
          visit the previous page - returns true if possible (should check isReversible() before offering the user a hook to this method - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

boolean clear()
          remove all items from the view

ulu.view.ui.Pager createPager()
          factory method for creating a pager - override if custom type required

void filter()
          filter all items in the view using current filters

(package private) java.lang.Object findPageMarker()
          find object marking top of page

void fireEvent(UEvent ev)
          generic wrapper for firing any ViewEvent

void fireRedirectEvent(View v)
          fire a redirect update event, pointing listeners towards a different view

static void fireRedirectEvent(View from, View to)
          more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

void fireUpdateEvent()
          more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

void fireUpdateEvent(int type)
          more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

void fireUpdateEvent(int type, Item[] its)
          more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

void fireUpdateEvent(int type, Item[] its, java.lang.String[] props)
          more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

static void fireUpdateEvent(View v)
          more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

UContained getChild(java.lang.String name)
          wrapper to satify the more generic Container interface

int getCount()
          count number of visible items in the current view

ItemFilter getFilter()
          get a filter for this view

Item getItem(java.lang.String name)
          retrieve a contained item by name

int getPageLength()
          get the current page length by delegating - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() metho

int getPageNo()
          get the current page number - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

ulu.view.ui.Pager getPager()
          get the pager for this view

java.lang.Class getSearchClass()
          get a Search implementation that operates on this type of object

java.lang.Class getSortClass()
          get a Sorter implementation that operates on this type of object

UContainer getSource()
          get the Viewable being paged

int getTotalLength()
          get the total length of the list being paged; in some cases this will be known in advance, in others not.

java.lang.Object invoke(UMethod u)
          implementation of Handler - this is the callback point for an invoked method.

java.lang.Object invokeSpecials(UMethod u)
          invoke any implementation-specific methods here

boolean isAutoFill()
          specifies whether the view will populate its contents automatically on startup.

static boolean isPagerMethod(UMethod u)
          convenience method for identifying whether to delegate method calls to the Pager - can be overridden if using bespoke pagers with extra functionality, although a Pager-defined flag that can be set in the method would be preferable really

boolean isReversible()
          say whether the list can be navigated in both directions, or is simply a one-way traversal system (e.g.

java.util.Enumeration items()
          list contents of this viewable object

java.util.Enumeration list(java.util.Vector allitems)
          list all items from the given Vector that are on the current page

boolean next()
          visit the next page - returns true if possible - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

java.lang.String pageDescrip()
          get a short message describing the page number - will give a total if available

void populate()
          override this method to talk to the real back-end - the filesystem, jini network, database, whatever...

boolean removeChild(UContained uc, boolean update)
          generic wrapper to conform to UContainer interface

boolean removeItem(Item it, boolean update)
          (attempt to) remove an item from view - success status returned.

void removeListener(UEventListener listener)
          remove a listener

boolean removeObject(java.lang.Object obj, boolean update)
          attempt to remove any item from the view that has a reference object matching the one passed here

void setDefProps(java.lang.String[] defprops)
          convenience method for setting default properties

void setFilter(ItemFilter f)
          set a Filter for this view

void setPageLength(int i)
          set the current page length - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() metho

void setPageNo(int i)
          set the current page number - only allowed if isReversible() returns true - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

void setSource(UContainer uc)
          set the Viewable being paged - always itself, so a null implementation given here

java.util.Vector visibleItems()
          apply the current filters if needs be and return a list of filtered items

Methods inherited from class ulu.view.ItemImpl

addJAFMethods, addMethod, addProp, addProp, addPropertyChangeListener, clearMethods, clearProps, getContent, getDefaultMethod, getMethod, getName, getParent, getParentView, getProp, getReference, getScrapbook, getType, inferTypeByClass, methods, properties, removeMethod, removeProp, removePropertyChangeListener, seal, setDefaultMethod, setName, setParent, setParentView, setReference, setRefImpl, setRefString, setType, update

Methods inherited from class java.lang.Object

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

Methods inherited from interface ulu.view.Item

getParentView, setParentView

Methods inherited from interface ulu.view.UContained

getParent, setParent

Methods inherited from interface ulu.view.Propertied

addProp, clearProps, getName, getProp, properties, removeProp, setName

Methods inherited from interface ulu.view.Invokable

addMethod, clearMethods, getDefaultMethod, getMethod, methods, removeMethod, setDefaultMethod

Methods inherited from interface ulu.view.Referrer

getReference, setReference

Methods inherited from interface ulu.view.Typed

getType, setType

Methods inherited from interface ulu.view.ContentSource

getContent

Field Detail

lazy

protected boolean lazy

denotes whether container ought to be populated at creation, or only as needed

caching

protected boolean caching

denotes whether a lazy component can cache its results. (i.e. retain the same items after items() has been called the first time), or whether it needs to call populate() each time items is called. If the view is not lazy, then caching makes no difference

cached

protected boolean cached

flag used to denote whether a lazy, caching view has populated itself

items

java.util.Vector items

stored items in this view, held as a Vector rather than a Hashtable because the latter won't guarantee a correct ordering of items that can be used for returning enumerations of a paged subsection. The downside of this (and the advantage of hashtables) is that lookup by name is slow in a Vector. This default implementation is not designed for high performance; where that's required, use a native implementation for that container instead

CaseSensitiveNames

public boolean CaseSensitiveNames

if false, hash all items by lower-case names for search purposes, but will preserve case of the name property (e.g. for display)

passive

public boolean passive

By default, a View won't generate events, but assumes the back-end is passively-recieving requests to update from the UI client. In some cases, we will want to actively push updates and other events from middle|back-end to client (e.g. a mail-watcher or instant messenger), so provide the mechanisms to do so here

listeners

java.util.Vector listeners

list of listeners to this item

pager

public ulu.view.ui.Pager pager

pager to delegate to

filt

ItemFilter filt

filter operating on this view

visItems

java.util.Vector visItems

cache of items currently visible through filter, changed only when the filter changes. This cached set is fed to the pager when altering its settings

filtered

boolean filtered

flag denoting whether current filter has been applied (and visItems cache is therefore up to date)

pagemarker

java.lang.Object pagemarker

page marker object used to denote top of current page. A numerical top of page index as used by the standard Pager doesn't work because filtering may change the position of the same item. This way if we refilter and the current top-pof-page is not filtered out, that item will stay at top of page, but page number may alter.

Constructor Detail

ViewImpl

public ViewImpl()

no-arg constructor required for ItemFactory

ViewImpl

public ViewImpl(java.lang.String name)

constructor will add an 'open' method as well as the name property. If no lazy option is given, will default to true

ViewImpl

public ViewImpl(java.lang.String name,
                boolean lazy)

The constructor will add an 'open' and a 'refresh' method as well as the name property.

Method Detail

addDefaultMethods

public void addDefaultMethods()

add default methods for opening and refreshing container. These will always be restored after a call to clearMethods(), so may be useful to override this method in some cases

Overrides:: addDefaultMethods in class ItemImpl

setDefProps

public void setDefProps(java.lang.String[] defprops)

convenience method for setting default properties

populate

public void populate()

override this method to talk to the real back-end - the filesystem, jini network, database, whatever...

invoke

public java.lang.Object invoke(UMethod u)
                        throws java.lang.Exception

implementation of Handler - this is the callback point for an invoked method. The default implementation here handles the ubiquitous open() and refresh() methods of the View, so subclasses adding their own handler code should call the super.invoke() at some point in order to preserve this important functionality

Specified by:: invoke in interface Handler
Overrides:: invoke in class ItemImpl

isPagerMethod

public static boolean isPagerMethod(UMethod u)

convenience method for identifying whether to delegate method calls to the Pager - can be overridden if using bespoke pagers with extra functionality, although a Pager-defined flag that can be set in the method would be preferable really

invokeSpecials

public java.lang.Object invokeSpecials(UMethod u)
                                throws java.lang.Exception

invoke any implementation-specific methods here

getCount

public int getCount()

count number of visible items in the current view

Specified by:: getCount in interface UContainer

items

public java.util.Enumeration items()

list contents of this viewable object

Specified by:: items in interface UContainer

getChild

public UContained getChild(java.lang.String name)

wrapper to satify the more generic Container interface

Specified by:: getChild in interface UContainer

getItem

public Item getItem(java.lang.String name)

retrieve a contained item by name

Specified by:: getItem in interface View

addChild

public boolean addChild(UContained uc,
                        boolean update)

generic wrapper to conform to UContainer interface

Specified by:: addChild in interface UContainer

addItem

public boolean addItem(Item it,
                       boolean update)

(attempt to) add an item to view - success status returned. The update flag indicates whether to inform the client UI of the change (may be more efficient not to when deleting or adding many items sequentially)

Specified by:: addItem in interface View

addObject

public boolean addObject(java.lang.String name,
                         java.lang.Object obj)

add an arbitrary object to this view, using the ItemFactory system to wrap it up as an Item. Viewers of the container are notified immediately of the change

addObject

public boolean addObject(java.lang.String name,
                         java.lang.Object obj,
                         boolean update)

add an arbitrary object to this view, using the ItemFactory system to wrap it up as an Item

removeChild

public boolean removeChild(UContained uc,
                           boolean update)

generic wrapper to conform to UContainer interface

Specified by:: removeChild in interface UContainer

removeItem

public boolean removeItem(Item it,
                          boolean update)

(attempt to) remove an item from view - success status returned. The update flag indicates whether to inform the client UI of the change (may be more efficient not to when deleting or adding many items sequentially)

Specified by:: removeItem in interface View

removeObject

public boolean removeObject(java.lang.Object obj,
                            boolean update)

attempt to remove any item from the view that has a reference object matching the one passed here

clear

public boolean clear()

remove all items from the view

Specified by:: clear in interface UContainer

addListener

public void addListener(UEventListener listener)

add a listener

Specified by:: addListener in interface View

removeListener

public void removeListener(UEventListener listener)

remove a listener

Specified by:: removeListener in interface View

fireEvent

public void fireEvent(UEvent ev)

generic wrapper for firing any ViewEvent

Specified by:: fireEvent in interface View

fireUpdateEvent

public void fireUpdateEvent()

more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

fireUpdateEvent

public void fireUpdateEvent(int type)

more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

fireUpdateEvent

public void fireUpdateEvent(int type,
                            Item[] its)

more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

fireUpdateEvent

public void fireUpdateEvent(int type,
                            Item[] its,
                            java.lang.String[] props)

more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.

fireRedirectEvent

public void fireRedirectEvent(View v)

fire a redirect update event, pointing listeners towards a different view

fireUpdateEvent

public static void fireUpdateEvent(View v)

more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc. Note that this is statically declared, hence will work with all Views, not just those descended from ViewImpl

fireRedirectEvent

public static void fireRedirectEvent(View from,
                                     View to)

isAutoFill

public boolean isAutoFill()

specifies whether the view will populate its contents automatically on startup. This is true of most views. This information is required by the persistence mechanism, which will only write child items to a persistence store if the view cannot automatically populate itself at startup

getPager

public ulu.view.ui.Pager getPager()

get the pager for this view

createPager

public ulu.view.ui.Pager createPager()

factory method for creating a pager - override if custom type required

getSource

public UContainer getSource()

get the Viewable being paged

Specified by:: getSource in interface ulu.view.ui.Pager

setSource

public void setSource(UContainer uc)

set the Viewable being paged - always itself, so a null implementation given here

Specified by:: setSource in interface ulu.view.ui.Pager

getPageLength

public int getPageLength()

get the current page length by delegating - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() metho

Specified by:: getPageLength in interface ulu.view.ui.Pager

setPageLength

public void setPageLength(int i)

set the current page length - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() metho

Specified by:: setPageLength in interface ulu.view.ui.Pager

getPageNo

public int getPageNo()

get the current page number - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

Specified by:: getPageNo in interface ulu.view.ui.Pager

setPageNo

public void setPageNo(int i)

set the current page number - only allowed if isReversible() returns true - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

Specified by:: setPageNo in interface ulu.view.ui.Pager

getTotalLength

public int getTotalLength()

get the total length of the list being paged; in some cases this will be known in advance, in others not. (If it is known, it could be useful in building up a google-style navigation strip in addition to a next/back control). Will return -1 if the list length can't be determined. - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

Specified by:: getTotalLength in interface ulu.view.ui.Pager

isReversible

public boolean isReversible()

say whether the list can be navigated in both directions, or is simply a one-way traversal system (e.g. a database resultset with a non-scrollable cursor) - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

Specified by:: isReversible in interface ulu.view.ui.Pager

public boolean next()

visit the next page - returns true if possible - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

Specified by:: next in interface ulu.view.ui.Pager

back

public boolean back()

visit the previous page - returns true if possible (should check isReversible() before offering the user a hook to this method - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method

Specified by:: back in interface ulu.view.ui.Pager

list

public java.util.Enumeration list(java.util.Vector allitems)

list all items from the given Vector that are on the current page

Specified by:: list in interface ulu.view.ui.Pager

pageDescrip

public java.lang.String pageDescrip()

get a short message describing the page number - will give a total if available

Specified by:: pageDescrip in interface ulu.view.ui.Pager

getFilter

public ItemFilter getFilter()

get a filter for this view

Specified by:: getFilter in interface View

setFilter

public void setFilter(ItemFilter f)

set a Filter for this view

Specified by:: setFilter in interface View

findPageMarker

java.lang.Object findPageMarker()

find object marking top of page

visibleItems

public java.util.Vector visibleItems()

apply the current filters if needs be and return a list of filtered items

filter

public void filter()

filter all items in the view using current filters

getSearchClass

public java.lang.Class getSearchClass()

get a Search implementation that operates on this type of object

Specified by:: getSearchClass in interface Searchable

getSortClass

public java.lang.Class getSortClass()

get a Sorter implementation that operates on this type of object

Specified by:: getSortClass in interface Sortable

Overview

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Deprecated

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Field Summary
`protected boolean`	`cached` flag used to denote whether a lazy, caching view has populated itself
`protected boolean`	`caching` denotes whether a lazy component can cache its results.
`boolean`	`CaseSensitiveNames` if false, hash all items by lower-case names for search purposes, but will preserve case of the name property (e.g.
`(package private) ItemFilter`	`filt` filter operating on this view
`(package private) boolean`	`filtered` flag denoting whether current filter has been applied (and visItems cache is therefore up to date)
`(package private) java.util.Vector`	`items` stored items in this view, held as a Vector rather than a Hashtable because the latter won't guarantee a correct ordering of items that can be used for returning enumerations of a paged subsection.
`protected boolean`	`lazy` denotes whether container ought to be populated at creation, or only as needed
`(package private) java.util.Vector`	`listeners` list of listeners to this item
`(package private) java.lang.Object`	`pagemarker` page marker object used to denote top of current page.
`ulu.view.ui.Pager`	`pager` pager to delegate to
`boolean`	`passive` By default, a View won't generate events, but assumes the back-end is passively-recieving requests to update from the UI client.
`(package private) java.util.Vector`	`visItems` cache of items currently visible through filter, changed only when the filter changes.

Constructor Summary
`ViewImpl()` no-arg constructor required for ItemFactory
`ViewImpl(java.lang.String name)` constructor will add an 'open' method as well as the name property.
`ViewImpl(java.lang.String name, boolean lazy)` The constructor will add an 'open' and a 'refresh' method as well as the name property.

Method Summary
`boolean`	`addChild(UContained uc, boolean update)` generic wrapper to conform to UContainer interface
`void`	`addDefaultMethods()` add default methods for opening and refreshing container.
`boolean`	`addItem(Item it, boolean update)` (attempt to) add an item to view - success status returned.
`void`	`addListener(UEventListener listener)` add a listener
`boolean`	`addObject(java.lang.String name, java.lang.Object obj)` add an arbitrary object to this view, using the ItemFactory system to wrap it up as an Item.
`boolean`	`addObject(java.lang.String name, java.lang.Object obj, boolean update)` add an arbitrary object to this view, using the ItemFactory system to wrap it up as an Item
`boolean`	`back()` visit the previous page - returns true if possible (should check isReversible() before offering the user a hook to this method - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method
`boolean`	`clear()` remove all items from the view
`ulu.view.ui.Pager`	`createPager()` factory method for creating a pager - override if custom type required
`void`	`filter()` filter all items in the view using current filters
`(package private) java.lang.Object`	`findPageMarker()` find object marking top of page
`void`	`fireEvent(UEvent ev)` generic wrapper for firing any ViewEvent
`void`	`fireRedirectEvent(View v)` fire a redirect update event, pointing listeners towards a different view
`static void`	`fireRedirectEvent(View from, View to)` more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.
`void`	`fireUpdateEvent()` more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.
`void`	`fireUpdateEvent(int type)` more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.
`void`	`fireUpdateEvent(int type, Item[] its)` more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.
`void`	`fireUpdateEvent(int type, Item[] its, java.lang.String[] props)` more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.
`static void`	`fireUpdateEvent(View v)` more specific wrapper for firing update events, specifying the type of update and the item(s) affected, etc.
`UContained`	`getChild(java.lang.String name)` wrapper to satify the more generic Container interface
`int`	`getCount()` count number of visible items in the current view
`ItemFilter`	`getFilter()` get a filter for this view
`Item`	`getItem(java.lang.String name)` retrieve a contained item by name
`int`	`getPageLength()` get the current page length by delegating - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() metho
`int`	`getPageNo()` get the current page number - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method
`ulu.view.ui.Pager`	`getPager()` get the pager for this view
`java.lang.Class`	`getSearchClass()` get a Search implementation that operates on this type of object
`java.lang.Class`	`getSortClass()` get a Sorter implementation that operates on this type of object
`UContainer`	`getSource()` get the Viewable being paged
`int`	`getTotalLength()` get the total length of the list being paged; in some cases this will be known in advance, in others not.
`java.lang.Object`	`invoke(UMethod u)` implementation of Handler - this is the callback point for an invoked method.
`java.lang.Object`	`invokeSpecials(UMethod u)` invoke any implementation-specific methods here
`boolean`	`isAutoFill()` specifies whether the view will populate its contents automatically on startup.
`static boolean`	`isPagerMethod(UMethod u)` convenience method for identifying whether to delegate method calls to the Pager - can be overridden if using bespoke pagers with extra functionality, although a Pager-defined flag that can be set in the method would be preferable really
`boolean`	`isReversible()` say whether the list can be navigated in both directions, or is simply a one-way traversal system (e.g.
`java.util.Enumeration`	`items()` list contents of this viewable object
`java.util.Enumeration`	`list(java.util.Vector allitems)` list all items from the given Vector that are on the current page
`boolean`	`next()` visit the next page - returns true if possible - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method
`java.lang.String`	`pageDescrip()` get a short message describing the page number - will give a total if available
`void`	`populate()` override this method to talk to the real back-end - the filesystem, jini network, database, whatever...
`boolean`	`removeChild(UContained uc, boolean update)` generic wrapper to conform to UContainer interface
`boolean`	`removeItem(Item it, boolean update)` (attempt to) remove an item from view - success status returned.
`void`	`removeListener(UEventListener listener)` remove a listener
`boolean`	`removeObject(java.lang.Object obj, boolean update)` attempt to remove any item from the view that has a reference object matching the one passed here
`void`	`setDefProps(java.lang.String[] defprops)` convenience method for setting default properties
`void`	`setFilter(ItemFilter f)` set a Filter for this view
`void`	`setPageLength(int i)` set the current page length - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() metho
`void`	`setPageNo(int i)` set the current page number - only allowed if isReversible() returns true - shouldn't need to override this, but override a subclass of PagerImpl returned by the createPager() method
`void`	`setSource(UContainer uc)` set the Viewable being paged - always itself, so a null implementation given here
`java.util.Vector`	`visibleItems()` apply the current filters if needs be and return a list of filtered items

ulu.view Class ViewImpl

lazy

caching

cached

items

CaseSensitiveNames

passive

listeners

pager

filt

visItems

filtered

pagemarker

ViewImpl

ViewImpl

ViewImpl

addDefaultMethods

setDefProps

populate

invoke

isPagerMethod

invokeSpecials

getCount

items

getChild

getItem

addChild

addItem

addObject

addObject

removeChild

removeItem

removeObject

clear

addListener

removeListener

fireEvent

fireUpdateEvent

fireUpdateEvent

fireUpdateEvent

fireUpdateEvent

fireRedirectEvent

fireUpdateEvent

fireRedirectEvent

isAutoFill

getPager

createPager

getSource

setSource

getPageLength

setPageLength

getPageNo

setPageNo

getTotalLength

isReversible

next

back

list

pageDescrip

getFilter

setFilter

findPageMarker

visibleItems

filter

getSearchClass

getSortClass

ulu.view
Class ViewImpl