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

Class LayerUtil

java.lang.Object

org.eclipse.nebula.widgets.nattable.layer.LayerUtil

public final class LayerUtil
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ADDITIONAL_POSITION_MODIFIER	Modifier that is used by layers if they add additional columns or rows.

Method Summary

Modifier and Type	Method	Description
static final int	convertColumnPosition(ILayer sourceLayer, int sourceColumnPosition, IUniqueIndexLayer targetLayer)	Convert column position from the source layer to the target layer
static final int	convertRowPosition(ILayer sourceLayer, int sourceRowPosition, IUniqueIndexLayer targetLayer)	Convert row position from the source layer to the target layer
protected static final int	findColumnPosition(int xOffset, int columnOffset, ILayer layer, int x, int totalWidth, int columnCount)
protected static final int	findRowPosition(int yOffset, int rowOffset, ILayer layer, int y, int totalHeight, int rowCount)
static final int	getColumnPositionByX(ILayer layer, int x)
static final int	getRowPositionByY(ILayer layer, int y)

Methods inherited from class java.lang.Object

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

Field Details

ADDITIONAL_POSITION_MODIFIER

public static final int ADDITIONAL_POSITION_MODIFIER

Modifier that is used by layers if they add additional columns or rows. By using this modifier layers can mark an added position to tell the conversion that it can handle the negative index to position conversion. For example, the HierarchicalTreeLayer adds structural columns to separate levels, these columns do not have an index as they are added. As some layers need the local column position, a conversion is performed first getting the column index and then get back the local position by index. Each added column is multiplied with this modifier and an identifier so the returned index is greater than -1, to tell the index-position transformation that calculation back to position is possible, and via the identifier the concrete position in the HierarchicalTreeLayer can be retrieved.

Since:

1.6

See Also:

• Constant Field Values

Method Details

getColumnPositionByX

public static final int getColumnPositionByX(ILayer layer,
 int x)

findColumnPosition

protected static final int findColumnPosition(int xOffset,
 int columnOffset,
 ILayer layer,
 int x,
 int totalWidth,
 int columnCount)

getRowPositionByY

public static final int getRowPositionByY(ILayer layer,
 int y)

findRowPosition

protected static final int findRowPosition(int yOffset,
 int rowOffset,
 ILayer layer,
 int y,
 int totalHeight,
 int rowCount)

convertColumnPosition

public static final int convertColumnPosition(ILayer sourceLayer,
 int sourceColumnPosition,
 IUniqueIndexLayer targetLayer)

Convert column position from the source layer to the target layer

Parameters:

sourceLayer - source layer

sourceColumnPosition - column position in the source layer

targetLayer - layer to convert the from position to

Returns:

converted column position, or -1 if conversion not possible

convertRowPosition

public static final int convertRowPosition(ILayer sourceLayer,
 int sourceRowPosition,
 IUniqueIndexLayer targetLayer)

Convert row position from the source layer to the target layer

Parameters:

sourceLayer - source layer

sourceRowPosition - position in the source layer

targetLayer - layer to convert the from position to

Returns:

converted row position, or -1 if conversion not possible