Package org.eclipse.nebula.widgets.nattable.grid.layer

Class GridLayer

java.lang.Object

org.eclipse.nebula.widgets.nattable.layer.AbstractLayer

org.eclipse.nebula.widgets.nattable.layer.CompositeLayer

org.eclipse.nebula.widgets.nattable.grid.layer.GridLayer

All Implemented Interfaces:

ILayer, ILayerListener, IPersistable

Direct Known Subclasses:

ColumnStructureUpdatesExampleGridLayer, DefaultGridLayer, FilterRowExampleGridLayer, GlazedListsGridLayer, GlazedListsGridLayer, SelectionExampleGridLayer, StaticFilterExampleGridLayer

public class GridLayer
extends CompositeLayer

Top level layer. It is composed of the smaller child layers: RowHeader, ColumnHeader, Corner and Body It does not have its own coordinate system unlike the other layers. It simply delegates most functions to its child layers.

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.nebula.widgets.nattable.layer.CompositeLayer

CompositeLayer.CompositeLayerPainter

Field Summary

Fields inherited from class org.eclipse.nebula.widgets.nattable.layer.AbstractLayer

commandHandlers, eventHandlers, eventHelperLock, layerPainter

Fields inherited from interface org.eclipse.nebula.widgets.nattable.persistence.IPersistable

DOT, VALUE_SEPARATOR

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GridLayer(boolean useDefaultConfiguration)
	GridLayer(ILayer bodyLayer, ILayer columnHeaderLayer, ILayer rowHeaderLayer, ILayer cornerLayer)
	GridLayer(ILayer bodyLayer, ILayer columnHeaderLayer, ILayer rowHeaderLayer, ILayer cornerLayer, boolean useDefaultConfiguration)

Method Summary

Modifier and Type	Method	Description
boolean	doCommand(ILayerCommand command)	Opportunity to respond to a command as it flows down the stack.
protected boolean	doCommandOnChildLayers(ILayerCommand command)	How the GridLayer processes commands is very important.
ILayer	getBodyLayer()
ILayer	getColumnHeaderLayer()
ILayer	getCornerLayer()
ILayer	getRowHeaderLayer()
protected void	init(boolean useDefaultConfiguration)
protected void	registerCommandHandlers()	Layers should use this method to register their command handlers and call it from their constructor.
void	setBodyLayer(ILayer bodyLayer)
void	setColumnHeaderLayer(ILayer columnHeaderLayer)
void	setCornerLayer(ILayer cornerLayer)
void	setRowHeaderLayer(ILayer rowHeaderLayer)
String	toString()

Methods inherited from class org.eclipse.nebula.widgets.nattable.layer.CompositeLayer

addConfigLabelAccumulatorForRegion, configure, dispose, getBoundsByPosition, getCellByPosition, getCellPainter, getChildLayerByLayoutCoordinate, getChildLayerByRegionName, getChildLayerLayout, getColumnCount, getColumnIndexByPosition, getColumnPositionByX, getColumnPositionOffset, getColumnWidthByPosition, getConfigLabelAccumulatorByRegionName, getConfigLabelsByPosition, getDataValueByPosition, getDisplayModeByPosition, getHeight, getHeightOffset, getLayoutXByColumnPosition, getLayoutXByPixelX, getLayoutXCount, getLayoutXYByChildLayer, getLayoutXYByPixelXY, getLayoutXYByPosition, getLayoutYByPixelY, getLayoutYByRowPosition, getLayoutYCount, getPreferredColumnCount, getPreferredHeight, getPreferredRowCount, getPreferredWidth, getProvidedLabels, getRegionLabelsByXY, getRowCount, getRowHeightByPosition, getRowIndexByPosition, getRowPositionByY, getRowPositionOffset, getStartXOfColumnPosition, getStartYOfRowPosition, getUnderlyingLayerByPosition, getUnderlyingLayersByColumnPosition, getUnderlyingLayersByRowPosition, getWidth, getWidthOffset, isColumnPositionResizable, isDynamicSizeLayer, isRowPositionResizable, loadState, localToUnderlyingColumnPosition, localToUnderlyingRowPosition, saveState, setChildLayer, setConfigLabelAccumulatorForRegion, underlyingToLocalColumnPosition, underlyingToLocalColumnPositions, underlyingToLocalRowPosition, underlyingToLocalRowPositions

Methods inherited from class org.eclipse.nebula.widgets.nattable.layer.AbstractLayer

addConfiguration, addLayerListener, clearConfiguration, fireLayerEvent, getClientAreaProvider, getConfigLabelAccumulator, getLayerPainter, getRegionName, handleLayerEvent, hasLayerListener, registerCommandHandler, registerEventHandler, registerPersistable, removeLayerListener, setClientAreaProvider, setConfigLabelAccumulator, setLayerPainter, setRegionName, unregisterCommandHandler, unregisterEventHandler, unregisterPersistable

Methods inherited from class java.lang.Object

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

Constructor Details

GridLayer

public GridLayer(ILayer bodyLayer,
 ILayer columnHeaderLayer,
 ILayer rowHeaderLayer,
 ILayer cornerLayer)

GridLayer

public GridLayer(ILayer bodyLayer,
 ILayer columnHeaderLayer,
 ILayer rowHeaderLayer,
 ILayer cornerLayer,
 boolean useDefaultConfiguration)

GridLayer

protected GridLayer(boolean useDefaultConfiguration)

Method Details

init

protected void init(boolean useDefaultConfiguration)

registerCommandHandlers

protected void registerCommandHandlers()

Description copied from class: AbstractLayer

Layers should use this method to register their command handlers and call it from their constructor. This allows easy overriding if required of command handlers

Overrides:

registerCommandHandlers in class AbstractLayer

doCommandOnChildLayers

protected boolean doCommandOnChildLayers(ILayerCommand command)

How the GridLayer processes commands is very important. Do not change this unless you know what you are doing and understand the full ramifications of your change. Otherwise your grid will not behave correctly! The Body is always given the first chance to process a command. There are two reasons for this: (1) most commands (80%) are destined for the body anyways so it's faster to check there first (2) the other layers all transitively depend on the body so it's not wise to ask them to do stuff until after the body has done it. This is especially true of grid initialization where the body must be initialized before any of its dependent layers. Because of this, if you want to intercept well-known commands to implement custom behavior (for example, you want to intercept the SelectCellCommand) then you must inject your special layer into the body. An injected column or row header will never see the command because it will be consumed first by the body. In practice, it's a good idea to implement all your command-handling logic in the body.

Overrides:

doCommandOnChildLayers in class CompositeLayer

getCornerLayer

public ILayer getCornerLayer()

setCornerLayer

public void setCornerLayer(ILayer cornerLayer)

getColumnHeaderLayer

public ILayer getColumnHeaderLayer()

setColumnHeaderLayer

public void setColumnHeaderLayer(ILayer columnHeaderLayer)

getRowHeaderLayer

public ILayer getRowHeaderLayer()

setRowHeaderLayer

public void setRowHeaderLayer(ILayer rowHeaderLayer)

getBodyLayer

public ILayer getBodyLayer()

setBodyLayer

public void setBodyLayer(ILayer bodyLayer)

toString

public String toString()

Overrides:

toString in class AbstractLayer

doCommand

public boolean doCommand(ILayerCommand command)

Description copied from class: CompositeLayer

Opportunity to respond to a command as it flows down the stack. If the layer is not interested in the command it should allow the command to keep traveling down the stack.

Note: Before the layer can process a command it must convert the command to its local coordinates using ILayerCommand.convertToTargetLayer(ILayer) Handle commands

Specified by:

doCommand in interface ILayer

Overrides:

doCommand in class CompositeLayer

Parameters:

command - The command to execute.

Returns:

true if the command has been handled and was therefore consumed, false otherwise.