CellExtension (CleanSheets Javadoc Documentation)

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csheets.ext
Class CellExtension

java.lang.Object
  csheets.ext.CellExtension

All Implemented Interfaces:: Cell, CellListener, Extensible<Cell>, Serializable, Comparable<Cell>, EventListener

Direct Known Subclasses:: AssertableCell, StylableCell, TestableCell

public abstract class CellExtension
extends Object
implements Cell, CellListener
extends Object
implements Cell, CellListener

A base class for extensions of cells in a spreadsheet that uses delegation to provide cell data.

Author:: Einar Pehrson
See Also:: Serialized Form

Constructor Summary
`CellExtension(Cell delegate, String name)` Creates a new cell extension.

Method Summary
`void`	`addCellListener(CellListener listener)` Registers the given listener on the cell.
`void`	`cellCleared(Cell cell)` Invoked when a cell has been cleared.
`void`	`cellCopied(Cell cell, Cell source)` Invoked when a cell has been copied.
`void`	`clear()` Clears the content of the cell.
`int`	`compareTo(Cell cell)`
`void`	`contentChanged(Cell cell)` Invoked when the content of a cell has been changed.
`void`	`copyFrom(Cell source)` Copies all data from the source cell to this one.
`void`	`dependentsChanged(Cell cell)` Invoked when a new dependent has been registered on a cell, or when an old one has been removed.
`Address`	`getAddress()` Returns the address of the cell.
`CellListener[]`	`getCellListeners()` Returns the listeners that have been registered on the cell.
`String`	`getContent()` Returns the content of the cell, as entered by the user.
`Cell`	`getDelegate()` Returns the extension's delegate.
`SortedSet<Cell>`	`getDependents()` Returns the dependents of the cell, i.e. the cells that contain a reference to the cell in their formula.
`Cell`	`getExtension(String name)` Returns the extension with the given key.
`Formula`	`getFormula()` Returns an expression representing the cell's formula.
`String`	`getName()` Returns the name of the extension to which the cell extension belongs.
`SortedSet<Cell>`	`getPrecedents()` Returns the precedents of the cell, i.e. the cells that the formula in the cell references.
`Spreadsheet`	`getSpreadsheet()` Returns the spreadsheet to which the cell belongs.
`Value`	`getValue()` Returns the value of the cell.
`void`	`moveFrom(Cell source)` Moves all data from the source cell to this one.
`void`	`removeCellListener(CellListener listener)` Removes the given listener from the cell.
`void`	`setContent(String content)` Sets the content of the cell and if it starts with the assignment operator attempts to parse a formula from it.
`String`	`toString()`
`void`	`valueChanged(Cell cell)` Invoked when the value of a cell has changed, either by a change in its content, or by a change of value in one of its precedents.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

CellExtension

public CellExtension(Cell delegate,
                     String name)

Creates a new cell extension.

Parameters:: delegate - the delegate of the extension; name - the name of the extension to which the cell extension belongs

Method Detail

getDelegate

public final Cell getDelegate()

Returns the extension's delegate.

Returns:: the extension's delegate, i.e. the cell to which it belongs

getName

public final String getName()

Returns the name of the extension to which the cell extension belongs.

Returns:: the name of the extension to which the cell extension belongs