Package com._1c.g5.v8.dt.common.ui.jface.viewers.deferred

Class DeferredContentProvider

java.lang.Object

com._1c.g5.v8.dt.common.ui.jface.viewers.deferred.DeferredContentProvider

All Implemented Interfaces:

IContentProvider, ILazyContentProvider

public class DeferredContentProvider
extends Object
implements ILazyContentProvider

Content provider that performs sorting and filtering in a background thread. Requires a TableViewer created with the SWT.VIRTUAL flag and an IConcurrentModel as input.

The sorter and filter must be set directly on the content provider. Any sorter or filter on the TableViewer will be ignored.

The real implementation is in BackgroundContentProvider. This object is a lightweight wrapper that adapts the algorithm to work with TableViewer.

Since:

3.1

See Also:

• DeferredContentProvider

Constructor Summary

Constructors

Constructor	Description
DeferredContentProvider(Comparator sortOrder)	Creates a DeferredContentProvider with the given sort order.
DeferredContentProvider(Comparator sortOrder, Object selection)	Creates a DeferredContentProvider with the given sort order and default selection.

Method Summary

Modifier and Type	Method	Description
void	dispose()
int	getLimit()	Returns the current maximum number of rows or -1 if unbounded
void	inputChanged(Viewer viewer, Object oldInput, Object newInput)
void	setFilter(IFilter toSet)	Sets the filter for this content provider.
void	setLimit(int limit)	Sets the maximum number of rows in the table.
void	setSortOrder(Comparator sortOrder)	Sets the sort order for this content provider.
void	updateElement(int element)

Methods inherited from class java.lang.Object

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

Constructor Details

DeferredContentProvider

public DeferredContentProvider(Comparator sortOrder)

Creates a DeferredContentProvider with the given sort order.

Parameters:

sortOrder - a comparator that sorts the content, cannot be null

DeferredContentProvider

public DeferredContentProvider(Comparator sortOrder,
 Object selection)

Creates a DeferredContentProvider with the given sort order and default selection.

Parameters:

sortOrder - a comparator that sorts the content, cannot be null

selection - object at the table to be selected as initial, can be null

Method Details

dispose

public void dispose()

Specified by:

dispose in interface IContentProvider

inputChanged

public void inputChanged(Viewer viewer,
 Object oldInput,
 Object newInput)

Specified by:

inputChanged in interface IContentProvider

setSortOrder

public void setSortOrder(Comparator sortOrder)

Sets the sort order for this content provider. This sort order takes priority over anything that was supplied to the TableViewer.

Parameters:

sortOrder - new sort order. The comparator must be able to support being used in a background thread.

setFilter

public void setFilter(IFilter toSet)

Sets the filter for this content provider. This filter takes priority over anything that was supplied to the TableViewer. The filter must be capable of being used in a background thread.

Parameters:

toSet - filter to set

setLimit

public void setLimit(int limit)

Sets the maximum number of rows in the table. If the model contains more than this number of elements, only the top elements will be shown based on the current sort order.

Parameters:

limit - maximum number of rows to show or -1 if unbounded

getLimit

public int getLimit()

Returns the current maximum number of rows or -1 if unbounded

Returns:

the current maximum number of rows or -1 if unbounded

updateElement

public void updateElement(int element)

Specified by:

updateElement in interface ILazyContentProvider