com.ibm.xsp.component
Class UIFileDownload

java.lang.Object
  javax.faces.component.UIComponent
      javax.faces.component.UIComponentBase
          javax.faces.component.UIData
              com.ibm.xsp.component.UIDataEx
                  com.ibm.xsp.component.UIFileDownload

All Implemented Interfaces:

FacesAjaxComponent, FacesAttrsObject, FacesComponent, FacesDataIterator, FacesRefreshableComponent, FacesRowAttrsComponent, FacesRowIndex, FacesThemeHandler, ThemeControl, javax.faces.component.NamingContainer, javax.faces.component.StateHolder

Direct Known Subclasses:

XspFileDownload

public class UIFileDownload
extends UIDataEx
implements FacesComponent, FacesThemeHandler, FacesAttrsObject, FacesRowAttrsComponent

Abstract File Download Component which handles creating all the internal components used to display the file available for downloading.

By default, the rendererType property must be set to "com.ibm.faces.AttachmentDownload" This value can be changed by calling the setRendererType() method.

Not intended to be subclassed.

Nested Class Summary

static class	UIFileDownload.DownloadVb Unit: UIFileDownload.java
static class	UIFileDownload.InternalCreated
static class	UIFileDownload.InternalHref
static class	UIFileDownload.InternalId
static class	UIFileDownload.InternalLastModified
static class	UIFileDownload.InternalName
static class	UIFileDownload.InternalSizeValue
static class	UIFileDownload.InternalType

Nested classes/interfaces inherited from class javax.faces.component.UIComponentBase

javax.faces.component.UIComponentBase.AggregatedIterator, javax.faces.component.UIComponentBase.UnmodifiableIterator

Nested classes/interfaces inherited from class javax.faces.component.UIComponent

javax.faces.component.UIComponent.StateMap, javax.faces.component.UIComponent.StateMapEntry

Field Summary

static java.lang.String	COMPONENT_TYPE The standard component type for this component.
static java.lang.String	RENDERER_TYPE

Fields inherited from class com.ibm.xsp.component.UIDataEx

AJAX_GETROWS, DEFAULT_ROWS_PER_PAGE

Fields inherited from class javax.faces.component.UIData

COMPONENT_FAMILY

Fields inherited from class javax.faces.component.UIComponentBase

EMPTY_ITERATOR

Fields inherited from class javax.faces.component.UIComponent

_xspStateId

Fields inherited from interface javax.faces.component.NamingContainer

SEPARATOR_CHAR

Constructor Summary

UIFileDownload()
Abstract File Download Component.

Method Summary

void	addAttr(Attr attr) Add an Attr, to appear as an attribute in the HTML output of this control or object tag.
void	addRowAttr(Attr rowAttr) Add an Attr, to appear as an attribute on the table row element.
protected void	bindBasicColumn(UIColumnEx column, UIFileDownload.DownloadVb columnValueBinding) Helper Method for binding a value binding to a specific column
void	buildContents(javax.faces.context.FacesContext context, FacesComponentBuilder builder) Build the component children and facets, the default implementation is usually: builder.buildAll(context, this, true); // includeFacets=true
protected java.lang.String	createExpression(java.lang.String propertyName) Helper method for creating a value binding expression for a given property
java.util.List<Attr>	getAttrs() The extra attributes to be output on the base element at the root of this control or object tag.
java.lang.String	getCreatedStyleClass()
java.lang.String	getCreatedTitle() Return the value of the createdTitle property.
java.util.Date	getCreatedValue() Return the value of the createdValue property.
com.ibm.xsp.model.FileDownloadValue	getCurrentFileDownloadValue() Returns the current FileDownloadValue of this instance, will be null if not set.
java.lang.String	getDeleteImageTitle() Return the value of the deleteImageTitle property.
java.lang.String	getDeleteMessage() Return the value of the deleteFileMessage property.
java.lang.String	getDeleteStyleClass()
java.util.Date	getEffectiveCreatedValue()
java.lang.String	getEffectiveFileNameHrefValue()
java.lang.String	getEffectiveFileNameValue() Note this is a localizable string displayed in the file name column.
java.util.Date	getEffectiveLastModifiedValue()
java.lang.String	getEffectiveSizeValue() The size value for the current row
java.lang.String	getEffectiveTypeValue()
UIColumnEx	getFileCreatedColumn()
UIColumnEx	getFileDeleteColumn()
java.lang.String	getFileId() The id of the current file, available while iterating through the download component.
UIColumnEx	getFileLastModifiedColumn()
UIColumnEx	getFileNameColumn()
java.lang.String	getFileNameHrefValue() Return the value of the filenameTitle property.
java.lang.String	getFileNameTitle() Return the value of the filenameTitle property.
java.lang.String	getFileNameValue() Return the value of the fileNameValue property.
UIColumnEx	getFileSizeColumn()
UIColumnEx	getFileTypeColumn()
java.lang.String	getLastModifiedTitle() Return the value of the lastModifiedTitle property.
java.util.Date	getLastModifiedValue() Return the value of the lastModifiedValue property.
java.lang.String	getModifiedStyleClass()
java.lang.String	getNameStyleClass()
protected NumberConverter	getNumberConverter() Returns the number converter used to format the file size.
java.util.List<Attr>	getRowAttrs() The extra attributes to be output on the table row element.
java.lang.String	getSizeStyleClass()
java.lang.String	getSizeTitle() Return the value of the sizeTitle property.
java.lang.String	getSizeValue() Return the value of the sizeValue property.
java.lang.String	getStyleKitFamily() The styleKitFamily is basically the default themeId, to use if the "themeId" property is not set on this control instance in the XPage source.
java.lang.String	getTypeStyleClass()
java.lang.String	getTypeTitle() Return the value of the typeTitle property.
java.lang.String	getTypeValue() Return the value of the typeValue property.
protected int	getZeroRows(int rows)
void	initAfterContents(javax.faces.context.FacesContext context) Perform component initialization after it's children and facets are added.
protected void	initBasicColumn(javax.faces.context.FacesContext context, java.lang.String columnTitle, javax.faces.convert.Converter converter, java.lang.String styleClass, javax.faces.el.ValueBinding columnValue)
void	initBeforeContents(javax.faces.context.FacesContext context) Perform component initialization before its children and facets are added.
protected void	initFileDeleteColumn(javax.faces.context.FacesContext context) Helper method to create the delete control.
boolean	isAllowDelete() Get the boolean value of the allowDelete property.
boolean	isDisplayCreated() Return the value of the displayCreated property.
boolean	isDisplayLastModified() Return the value of the displayLastModified property.
boolean	isDisplaySize() Return the value of the displaySize property.
boolean	isDisplayType() Return the value of the displayType property.
boolean	isHideWhen() Return the value of the hideWhen property.
boolean	isReadOnlyMode(javax.faces.context.FacesContext context)
boolean	isRendered()
void	processRestoreState(javax.faces.context.FacesContext context, java.lang.Object state)
protected java.lang.Object	resolveValue()
void	restoreState(javax.faces.context.FacesContext context, java.lang.Object _state)
java.lang.Object	saveState(javax.faces.context.FacesContext context)
void	setAllowDelete(boolean allowDelete) Set boolean value for the allowDelete property.
void	setAttrs(java.util.List<Attr> attrs) This method is not used by the XPage generated .java file - instead the addAttr(Attr) method is used to add attributes to the list.
void	setCreatedStyleClass(java.lang.String styleClass)
void	setCreatedTitle(java.lang.String createdTitle) Set the value of the createdTitle property.
void	setCreatedValue(java.util.Date created) Set the value of the createdValue property.
void	setDeleteImageTitle(java.lang.String deleteImageTitle) Sets the value of the deleteImageTitle property.
void	setDeleteMessage(java.lang.String deleteMessage) Sets the value for the deleteMessage property.
void	setDeleteStyleClass(java.lang.String styleClass)
void	setDisplayCreated(boolean displayCreated) Set the value of the displayCreated property.
void	setDisplayLastModified(boolean displayLastModified) Set the value of the displayLastModified property.
void	setDisplaySize(boolean displaySize) Set the value of the displaySize property.
void	setDisplayType(boolean displayType) Set the value of the displayType property.
void	setFileNameHrefValue(java.lang.String href) Set the value of the filenameTitle property.
void	setFileNameTitle(java.lang.String fileNameTitle) Set the value of the filenameTitle property.
void	setFileNameValue(java.lang.String fileNameValue) Set the value of the fileNameValue property.
void	setHideWhen(boolean hideWhen) Set the value of the hideWhen property.
void	setLastModifiedTitle(java.lang.String lastModifiedTitle) Set the value of the lastModifiedTitle property.
void	setLastModifiedValue(java.util.Date vb) Set the value of the lastModifiedValue property.
void	setModifiedStyleClass(java.lang.String styleClass)
void	setNameStyleClass(java.lang.String styleClass)
void	setRowAttrs(java.util.List<Attr> rowAttrs) This method is not used by the XPage generated .java file - instead the addAttr(Attr) method is used to add attributes to the list.
void	setSizeStyleClass(java.lang.String styleClass)
void	setSizeTitle(java.lang.String sizeTitle) Set the value of the sizeTitle property.
void	setSizeValue(java.lang.String sizeValue) Set the value of the sizeValue property.
boolean	setThemeProperty(java.lang.String name, java.lang.Object value) Implemented by components which handle setting their own default styles
void	setTypeStyleClass(java.lang.String styleClass)
void	setTypeTitle(java.lang.String typeTitle) Set the value of the typeTitle property.
void	setTypeValue(java.lang.String typeValue) Set the value of the typeValue property.

Methods inherited from class com.ibm.xsp.component.UIDataEx

_xspCleanTransientData, broadcast, computeDataModelKey, createDataModel, encodeBegin, encodeEnd, getAjaxUrl, getAjaxUrl, getData, getDataModel, getDataSource, getIndexVar, getLastCreatedDataModel, getNonChildClientId, getRefreshId, getRowCount, getRowCount, getRows, getValue, gotoFirstPage, gotoLastPage, gotoNextPage, gotoPage, gotoPreviousPage, gotoRow, handles, invokeOnComponent, isNestedInDataIterator, isPartialExecute, isPartialRefresh, processAjaxGetRows, processAjaxRequest, processDecodes, processUpdates, processValidators, publishControlData, queueEvent, resetDataModel, revokeControlData, setData, setDataModel, setIndexVar, setRowIndex, setRows, setValue, setValueBinding, setVar, visitTree

Methods inherited from class javax.faces.component.UIData

getClientId, getFamily, getFirst, getFooter, getHeader, getRowData, getRowIndex, getVar, isRowAvailable, setFirst, setFooter, setHeader

Methods inherited from class javax.faces.component.UIComponentBase

_xspGetReadOnlyObj, _xspGetRendererData, _xspRemoveReadOnlyObj, _xspRemoveRendererData, _xspSetIdUnchecked, _xspSetReadOnlyObj, _xspSetRendererData, addFacesListener, decode, encodeChildren, findComponent, getAttributes, getChildCount, getChildren, getFacesContext, getFacesListeners, getFacet, getFacetCount, getFacets, getFacetsAndChildren, getId, getParent, getRenderer, getRendererType, getRendersChildren, getValueBinding, isTransient, processSaveState, removeFacesListener, restoreAttachedState, saveAttachedState, setId, setParent, setRendered, setRendererType, setTransient

Methods inherited from class javax.faces.component.UIComponent

_xspGetStateId, _xspGetStateMap, _xspRestoreAttribute, _xspRestoreState, _xspSaveState, isVisitable, markInitialState, setControlState

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.ibm.xsp.component.FacesDataIterator

getFirst, getRowIndex, setFirst

Field Detail

COMPONENT_TYPE

public static final java.lang.String COMPONENT_TYPE

The standard component type for this component.

See Also:

Constant Field Values

RENDERER_TYPE

public static final java.lang.String RENDERER_TYPE

See Also:

Constant Field Values

Constructor Detail

UIFileDownload

public UIFileDownload()

Abstract File Download Component.

Method Detail

getStyleKitFamily

public java.lang.String getStyleKitFamily()

Description copied from interface: ThemeControl

The styleKitFamily is basically the default themeId, to use if the "themeId" property is not set on this control instance in the XPage source. For example, "InputField.EditBox" is used for most Edit Box controls. See Domino/xsp/nsf/themes/webstandard.theme for more examples.

The implementation may return different values depending on the configuration of the current control, for example the Button control returns a different value and looks different when it is configured as a cancel button.

Specified by:

getStyleKitFamily in interface ThemeControl

Overrides:

getStyleKitFamily in class UIDataEx

Returns:

a non-null themeId corresponding to the configuration for this type of control in a theme file.

setThemeProperty

public boolean setThemeProperty(java.lang.String name,
                                java.lang.Object value)

Description copied from interface: FacesThemeHandler

Implemented by components which handle setting their own default styles

Specified by:

setThemeProperty in interface FacesThemeHandler

Parameters:

name - TODO

value - TODO

Returns:

TODO

getTypeStyleClass

public java.lang.String getTypeStyleClass()

getSizeStyleClass

public java.lang.String getSizeStyleClass()

getNameStyleClass

public java.lang.String getNameStyleClass()

getModifiedStyleClass

public java.lang.String getModifiedStyleClass()

getCreatedStyleClass

public java.lang.String getCreatedStyleClass()

getDeleteStyleClass

public java.lang.String getDeleteStyleClass()

setTypeStyleClass

public void setTypeStyleClass(java.lang.String styleClass)

setSizeStyleClass

public void setSizeStyleClass(java.lang.String styleClass)

setNameStyleClass

public void setNameStyleClass(java.lang.String styleClass)

setModifiedStyleClass

public void setModifiedStyleClass(java.lang.String styleClass)

setCreatedStyleClass

public void setCreatedStyleClass(java.lang.String styleClass)

setDeleteStyleClass

public void setDeleteStyleClass(java.lang.String styleClass)

getAttrs

public java.util.List<Attr> getAttrs()

The extra attributes to be output on the base element at the root of this control or object tag. This should only be used when none of the properties in the All Properties pane correspond to the desired attribute. This may return null. The addAttr(Attr) method should be used to add an Attr.

Specified by:

getAttrs in interface FacesAttrsObject

addAttr

public void addAttr(Attr attr)

Add an Attr, to appear as an attribute in the HTML output of this control or object tag.

Specified by:

addAttr in interface FacesAttrsObject

Parameters:

action -

setAttrs

public void setAttrs(java.util.List<Attr> attrs)

This method is not used by the XPage generated .java file - instead the addAttr(Attr) method is used to add attributes to the list.

getRowAttrs

public java.util.List<Attr> getRowAttrs()

The extra attributes to be output on the table row element. This should only be used when none of the properties in the All Properties pane correspond to the desired attribute. This may return null. The addRowAttr(Attr) method should be used to add a row Attr.

Specified by:

getRowAttrs in interface FacesRowAttrsComponent

addRowAttr

public void addRowAttr(Attr rowAttr)

Add an Attr, to appear as an attribute on the table row element.

Specified by:

addRowAttr in interface FacesRowAttrsComponent

Parameters:

action -

setRowAttrs

public void setRowAttrs(java.util.List<Attr> rowAttrs)

This method is not used by the XPage generated .java file - instead the addAttr(Attr) method is used to add attributes to the list.

getNumberConverter

protected NumberConverter getNumberConverter()

Returns the number converter used to format the file size.

Returns:

NumberConverter

buildContents

public void buildContents(javax.faces.context.FacesContext context,
                          FacesComponentBuilder builder)
                   throws javax.faces.FacesException

Description copied from interface: FacesComponent

Build the component children and facets, the default implementation is usually:
builder.buildAll(context, this, true); // includeFacets=true

Specified by:

buildContents in interface FacesComponent

Throws:

javax.faces.FacesException

isRendered

public boolean isRendered()

Overrides:

isRendered in class javax.faces.component.UIComponentBase

initFileDeleteColumn

protected void initFileDeleteColumn(javax.faces.context.FacesContext context)

Helper method to create the delete control.

Parameters:

context -

isReadOnlyMode

public boolean isReadOnlyMode(javax.faces.context.FacesContext context)

initBasicColumn

protected void initBasicColumn(javax.faces.context.FacesContext context,
                               java.lang.String columnTitle,
                               javax.faces.convert.Converter converter,
                               java.lang.String styleClass,
                               javax.faces.el.ValueBinding columnValue)

Parameters:

context -

columnTitle - Title of the column this is addressing

converter - a converter used to convert the value.

styleClass - the style class for the column header

columnValue - a value binding that provides a default implementation for the column value, or will delegate to the value the user has set

bindBasicColumn

protected void bindBasicColumn(UIColumnEx column,
                               UIFileDownload.DownloadVb columnValueBinding)

Helper Method for binding a value binding to a specific column

Parameters:

column -

columnValueBinding -

createExpression

protected java.lang.String createExpression(java.lang.String propertyName)

Helper method for creating a value binding expression for a given property

Parameters:

propertyName -

Returns:

getDeleteMessage

public java.lang.String getDeleteMessage()

Return the value of the deleteFileMessage property. Contents:

Used as the prompt text when 'delete file' image control is clicked.

setDeleteMessage

public void setDeleteMessage(java.lang.String deleteMessage)

Sets the value for the deleteMessage property. Contents:

Used to override the prompt value displayed when 'delete' image control is clicked.

getDeleteImageTitle

public java.lang.String getDeleteImageTitle()

Return the value of the deleteImageTitle property. Contents:

Used for the title of the 'delete file' image control.

setDeleteImageTitle

public void setDeleteImageTitle(java.lang.String deleteImageTitle)

Sets the value of the deleteImageTitle property. Contents:

Used to override the title value for the 'delete file' image control.

getFileNameTitle

public java.lang.String getFileNameTitle()

Return the value of the filenameTitle property. Contents:

Used to override the default value for the file name title on the column header.

setFileNameHrefValue

public void setFileNameHrefValue(java.lang.String href)

Set the value of the filenameTitle property. Contents:

getFileNameHrefValue

public java.lang.String getFileNameHrefValue()

Return the value of the filenameTitle property. Contents:

Used to override the default value for the file name title on the column header.

setFileNameValue

public void setFileNameValue(java.lang.String fileNameValue)

Set the value of the fileNameValue property. Contents:

getFileNameValue

public java.lang.String getFileNameValue()

Return the value of the fileNameValue property. Contents:

used to override the default value (valuebinding) for the file names.

getLastModifiedTitle

public java.lang.String getLastModifiedTitle()

Return the value of the lastModifiedTitle property. Contents:

Holds the value of he column header for Last Modified

getCreatedTitle

public java.lang.String getCreatedTitle()

Return the value of the createdTitle property. Contents:

Holds the value of he column header for Created

setLastModifiedValue

public void setLastModifiedValue(java.util.Date vb)

Set the value of the lastModifiedValue property. Contents:

getLastModifiedValue

public java.util.Date getLastModifiedValue()

Return the value of the lastModifiedValue property. Contents:

Holds the value for the valueBinding for Last Modified, used to override the default valueBinding set up internally on this component.

setCreatedValue

public void setCreatedValue(java.util.Date created)

Set the value of the createdValue property. Contents:

getCreatedValue

public java.util.Date getCreatedValue()

Return the value of the createdValue property. Contents:

Holds the value for the valueBinding for Created, used to override the default valueBinding set up internally on this component.

getSizeTitle

public java.lang.String getSizeTitle()

Return the value of the sizeTitle property. Contents:

Display the size of the file to users.

setSizeValue

public void setSizeValue(java.lang.String sizeValue)

Set the value of the sizeValue property. Contents:

getSizeValue

public java.lang.String getSizeValue()

Return the value of the sizeValue property. Contents:

Display the size of the file to users.

getTypeTitle

public java.lang.String getTypeTitle()

Return the value of the typeTitle property. Contents:

Used to set the title of the File Type Column header, use this to override the default column header for file type.

setTypeValue

public void setTypeValue(java.lang.String typeValue)

Set the value of the typeValue property. Contents:

getTypeValue

public java.lang.String getTypeValue()

Return the value of the typeValue property. Contents:

Used to override the default value associated with the file type.

isDisplayLastModified

public boolean isDisplayLastModified()

Return the value of the displayLastModified property. Contents:

Display the last modified date of the file to users.

isDisplayCreated

public boolean isDisplayCreated()

Return the value of the displayCreated property. Contents:

Display the created date of the file to users.

isDisplaySize

public boolean isDisplaySize()

Return the value of the displaySize property. Contents:

Display the size of the file to users.

isDisplayType

public boolean isDisplayType()

Return the value of the displayType property. Contents:

Display the type of the file to users.

isHideWhen

public boolean isHideWhen()

Return the value of the hideWhen property. Contents:

Hide the file download field when no files are available for download.

getFileTypeColumn

public UIColumnEx getFileTypeColumn()

getFileDeleteColumn

public UIColumnEx getFileDeleteColumn()

getFileCreatedColumn

public UIColumnEx getFileCreatedColumn()

getFileLastModifiedColumn

public UIColumnEx getFileLastModifiedColumn()

getFileSizeColumn

public UIColumnEx getFileSizeColumn()

getFileNameColumn

public UIColumnEx getFileNameColumn()

restoreState

public void restoreState(javax.faces.context.FacesContext context,
                         java.lang.Object _state)

Specified by:

restoreState in interface javax.faces.component.StateHolder

Overrides:

restoreState in class UIDataEx

processRestoreState

public void processRestoreState(javax.faces.context.FacesContext context,
                                java.lang.Object state)

Overrides:

processRestoreState in class javax.faces.component.UIComponentBase

saveState

public java.lang.Object saveState(javax.faces.context.FacesContext context)

Specified by:

saveState in interface javax.faces.component.StateHolder

Overrides:

saveState in class UIDataEx

setDisplayLastModified

public void setDisplayLastModified(boolean displayLastModified)

Set the value of the displayLastModified property.

setDisplayCreated

public void setDisplayCreated(boolean displayCreated)

Set the value of the displayCreated property.

setDisplaySize

public void setDisplaySize(boolean displaySize)

Set the value of the displaySize property.

setDisplayType

public void setDisplayType(boolean displayType)

Set the value of the displayType property.

setFileNameTitle

public void setFileNameTitle(java.lang.String fileNameTitle)

Set the value of the filenameTitle property.

setHideWhen

public void setHideWhen(boolean hideWhen)

Set the value of the hideWhen property.

setCreatedTitle

public void setCreatedTitle(java.lang.String createdTitle)

Set the value of the createdTitle property.

setLastModifiedTitle

public void setLastModifiedTitle(java.lang.String lastModifiedTitle)

Set the value of the lastModifiedTitle property.

setSizeTitle

public void setSizeTitle(java.lang.String sizeTitle)

Set the value of the sizeTitle property.

setTypeTitle

public void setTypeTitle(java.lang.String typeTitle)

Set the value of the typeTitle property.

isAllowDelete

public boolean isAllowDelete()

Get the boolean value of the allowDelete property.

When true this adds a control to allow a user to delete a file.

Returns:

boolean

setAllowDelete

public void setAllowDelete(boolean allowDelete)

Set boolean value for the allowDelete property.

When true this adds a control to allow a user to delete a file.

Parameters:

boolean -

initBeforeContents

public void initBeforeContents(javax.faces.context.FacesContext context)
                        throws javax.faces.FacesException

Description copied from interface: FacesComponent

Perform component initialization before its children and facets are added.

Specified by:

initBeforeContents in interface FacesComponent

Throws:

javax.faces.FacesException

initAfterContents

public void initAfterContents(javax.faces.context.FacesContext context)
                       throws javax.faces.FacesException

Description copied from interface: FacesComponent

Perform component initialization after it's children and facets are added.

Specified by:

initAfterContents in interface FacesComponent

Throws:

javax.faces.FacesException

getEffectiveSizeValue

public java.lang.String getEffectiveSizeValue()

The size value for the current row

getEffectiveFileNameHrefValue

public java.lang.String getEffectiveFileNameHrefValue()

getEffectiveLastModifiedValue

public java.util.Date getEffectiveLastModifiedValue()

getEffectiveCreatedValue

public java.util.Date getEffectiveCreatedValue()

getEffectiveFileNameValue

public java.lang.String getEffectiveFileNameValue()

Note this is a localizable string displayed in the file name column. To get the file name id use getFileId()

Returns:

getFileId

public java.lang.String getFileId()

The id of the current file, available while iterating through the download component.

getEffectiveTypeValue

public java.lang.String getEffectiveTypeValue()

resolveValue

protected java.lang.Object resolveValue()

Overrides:

resolveValue in class UIDataEx

getCurrentFileDownloadValue

public com.ibm.xsp.model.FileDownloadValue getCurrentFileDownloadValue()

Returns the current FileDownloadValue of this instance, will be null if not set.

getZeroRows

protected int getZeroRows(int rows)

Overrides:

getZeroRows in class UIDataEx