de.jaret.util.ui.table.editor
Class DoubleCellEditor

java.lang.Object
  de.jaret.util.ui.table.editor.CellEditorBase
      de.jaret.util.ui.table.editor.DoubleCellEditor

All Implemented Interfaces:

ICellEditor, java.util.EventListener, org.eclipse.swt.events.FocusListener, org.eclipse.swt.internal.SWTEventListener

public class DoubleCellEditor
extends CellEditorBase
implements ICellEditor, org.eclipse.swt.events.FocusListener

Cell Editor for editing double values.

Key bindings: CR, TAB: accept input and leave, ESC leave and reset to value when starting editing. Cursor up/down will roll the value.

Version:

$Id: DoubleCellEditor.java 394 2007-05-01 10:51:25Z olk $

Author:

Peter Kliem

Field Summary

protected de.jaret.util.ui.DoubleField	_doubleField doublefield managing the input.
protected double	_oldVal old value for restauration.
protected org.eclipse.swt.widgets.Text	_text text control wrapped by the doublefield.

Fields inherited from class de.jaret.util.ui.table.editor.CellEditorBase

_column, _row, _table

Constructor Summary

DoubleCellEditor()
Default constructor.

Method Summary

protected double	convertValue(IRow row, IColumn column) Convert the value retrieved from the model.
void	dispose() Dispose whatever resouces have been allocated.
void	focusGained(org.eclipse.swt.events.FocusEvent arg0) do nothing.
void	focusLost(org.eclipse.swt.events.FocusEvent arg0) On losing focus store the value.
org.eclipse.swt.widgets.Control	getEditorControl(JaretTable table, IRow row, IColumn column, char typedKey) Provide the Control for editing the value at row/column.
int	getPreferredHeight() If the renderer *wishes* to be sized not the height of the cell, this method may be used to announce the preferred height of the control.
void	stopEditing(boolean storeInput) End editing.
protected void	storeValue(IRow row, IColumn column) Store the value in the model.

Methods inherited from class de.jaret.util.ui.table.editor.CellEditorBase

handleClick

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.jaret.util.ui.table.editor.ICellEditor

handleClick

Field Detail

_text

protected org.eclipse.swt.widgets.Text _text

text control wrapped by the doublefield.

_oldVal

protected double _oldVal

old value for restauration.

_doubleField

protected de.jaret.util.ui.DoubleField _doubleField

doublefield managing the input.

Constructor Detail

DoubleCellEditor

public DoubleCellEditor()

Default constructor.

Method Detail

convertValue

protected double convertValue(IRow row,
                              IColumn column)

Convert the value retrieved from the model.

Parameters:

row - row of the cell

column - column of the cell

Returns:

double value (defaulting to 0.0)

storeValue

protected void storeValue(IRow row,
                          IColumn column)

Store the value in the model. If any error occurs, it will be silently ignored!

Parameters:

row - row

column - column

getEditorControl

public org.eclipse.swt.widgets.Control getEditorControl(JaretTable table,
                                                        IRow row,
                                                        IColumn column,
                                                        char typedKey)

Provide the Control for editing the value at row/column. Important: make shure _not_ to create a new control with every call!

This method may return null indicating that the editor will not supply a control.

Base implementation storing the table and row/col information.

Specified by:

getEditorControl in interface ICellEditor

Overrides:

getEditorControl in class CellEditorBase

Parameters:

table - the table requesting the editor

row - row

column - column

typedKey - the character typed when invoking the editor (may be 0 if the editor was invoked without typing any key)

Returns:

configured Control (parent has to be the table)

getPreferredHeight

public int getPreferredHeight()

If the renderer *wishes* to be sized not the height of the cell, this method may be used to announce the preferred height of the control. A value of -1 signals no preference. default will always return -1.

Specified by:

getPreferredHeight in interface ICellEditor

Overrides:

getPreferredHeight in class CellEditorBase

Returns:

preferred height or -1 for no preference.

focusGained

public void focusGained(org.eclipse.swt.events.FocusEvent arg0)

do nothing.

Specified by:

focusGained in interface org.eclipse.swt.events.FocusListener

focusLost

public void focusLost(org.eclipse.swt.events.FocusEvent arg0)

On losing focus store the value.

Specified by:

focusLost in interface org.eclipse.swt.events.FocusListener

dispose

public void dispose()

Dispose whatever resouces have been allocated.

Specified by:

dispose in interface ICellEditor

Overrides:

dispose in class CellEditorBase

stopEditing

public void stopEditing(boolean storeInput)

End editing.

Specified by:

stopEditing in interface ICellEditor

Parameters:

storeInput - if true the editor shall save the current input.