com.eliad.model
Interface QuerySpanModel

All Known Implementing Classes:

AbstractQuerySpanModel

public interface QuerySpanModel

extends SpanModel

This interface should be implemented by span models that are able to answer a question about the presence of a span at a certain point. QuerySpanModel should be used for algorithms ranging from constant to linear. For strictly constant algorithms, DirectSpanModel is better to use.

Version:

1.0 00/04/08

Author:

Patrick Mérissert-Coffinières

Method Summary

ExtentCell	getSpanOver(int row, int column) Obtains a Rectangle representing the span bounds which overlaps the cell at row, column.
boolean	isEmpty() Returns true only if there is no span

Methods inherited from interface com.eliad.model.SpanModel

addSpanModelListener, removeSpanModelListener

Method Detail

getSpanOver

public ExtentCell getSpanOver(int row,
                              int column)

Obtains a Rectangle representing the span bounds which overlaps the cell at row, column.

There should be only one answer for a given row, cell.

Parameters:

row - the row of a cell

column - the column a cell

Returns:

the description of the span containing this cell, null if there is none

isEmpty

public boolean isEmpty()

Returns true only if there is no span