Bug 270092 [CellEditors] [cell editors] TextCellEditor should not specify minimum size
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TextCellEditor.java
* accordingly, and then reports a change via <code>fireEditorValueChanged</code>.
     * Subclasses should call this method at appropriate times. Subclasses
     * may extend or reimplement.
     *
     * @param e the SWT modify event
     */
    protected void editOccured(ModifyEvent e) {
        String value = text.getText();
        if (value == null) {
			value = "";
		}
        Object typedValue = value;
        boolean oldValidState = isValueValid();
        boolean newValidState = isCorrect(typedValue);
        if (typedValue == null && newValidState) {
			Assert.isTrue(false,
                    "Validator isn't limiting the cell editor's type range");
		}
        if (!newValidState) {
            
            setErrorMessage(MessageFormat.format(getErrorMessage(),
                    new Object[] { value }));
        }
        valueChanged(oldValidState, newValidState);
    }
    /**
     * Since a text editor field is scrollable we don't
     * set a minimumSize.
     */
    public LayoutData getLayoutData() {