Package com.google.gwt.view.client

Interface HasData<T>

Type Parameters:

T - the data type of each row

All Superinterfaces:

HasCellPreviewHandlers<T>, HasHandlers, HasRows

All Known Implementing Classes:

AbstractCellTable, AbstractHasData, CellBrowser.BrowserCellList, CellList, CellTable, CellTreeNodeView.NodeCellList, DataGrid, HasDataPresenter

public interface HasData<T>
extends HasRows, HasCellPreviewHandlers<T>

A view that can display a range of data.

Method Summary

Modifier and Type	Method	Description
SelectionModel<? super T>	getSelectionModel()	Get the SelectionModel used by this HasData.
T	getVisibleItem(int indexOnPage)	Get the row value at the specified visible index.
int	getVisibleItemCount()	Get the number of visible items being displayed.
Iterable<T>	getVisibleItems()	Get an Iterable composed of all of the visible items.
void	setRowData(int start, List<? extends T> values)	Set a values associated with the rows in the visible range.
void	setSelectionModel(SelectionModel<? super T> selectionModel)	Set the SelectionModel used by this HasData.
void	setVisibleRangeAndClearData(Range range, boolean forceRangeChangeEvent)	Set the visible range and clear the current visible data.

Methods inherited from interface com.google.gwt.view.client.HasCellPreviewHandlers

addCellPreviewHandler

Methods inherited from interface com.google.gwt.event.shared.HasHandlers

fireEvent

Methods inherited from interface com.google.gwt.view.client.HasRows

addRangeChangeHandler, addRowCountChangeHandler, getRowCount, getVisibleRange, isRowCountExact, setRowCount, setRowCount, setVisibleRange, setVisibleRange

Method Details

getSelectionModel

SelectionModel<? super T> getSelectionModel()

Get the SelectionModel used by this HasData.

Returns:

the SelectionModel

See Also:

• setSelectionModel(SelectionModel)

getVisibleItem

T getVisibleItem(int indexOnPage)

Get the row value at the specified visible index. Index 0 corresponds to the first item on the page.

Parameters:

indexOnPage - the index on the page

Returns:

the row value

getVisibleItemCount

int getVisibleItemCount()

Get the number of visible items being displayed. Note that this value might be less than the page size if there is not enough data to fill the page.

Returns:

the number of visible items on the page

getVisibleItems

Iterable<T> getVisibleItems()

Get an Iterable composed of all of the visible items.

Returns:

an Iterable instance

setRowData

void setRowData(int start,
 List<? extends T> values)

Set a values associated with the rows in the visible range.

This method does not replace all rows in the display; it replaces the row values starting at the specified start index through the length of the specified values. You must call HasRows.setRowCount(int) to set the total number of rows in the display. You should also use HasRows.setRowCount(int) to remove rows when the total number of rows decreases.

Parameters:

start - the start index of the data

values - the values within the range

setSelectionModel

void setSelectionModel(SelectionModel<? super T> selectionModel)

Set the SelectionModel used by this HasData.

Parameters:

selectionModel - the SelectionModel

See Also:

• getSelectionModel()

setVisibleRangeAndClearData

void setVisibleRangeAndClearData(Range range,
 boolean forceRangeChangeEvent)

Set the visible range and clear the current visible data.

If the second argument forceRangeChangeEvent is true, a RangeChangeEvent will be fired even if the range does not change. If false, a RangeChangeEvent will only be fired if the range changes.

Parameters:

range - the new Range

forceRangeChangeEvent - true to fire a RangeChangeEvent even if the Range doesn't change