Bug 270092 [CellEditors] [cell editors] TextCellEditor should not specify minimum size
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TextCellEditor.java
* <code>CellEditor</code> method returns <code>true</code> if 
     * the current selection is not empty.
     */
    public boolean isCopyEnabled() {
        if (text == null || text.isDisposed()) {
			return false;
		}
        return text.getSelectionCount() > 0;
    }
    /**
     * The <code>TextCellEditor</code>  implementation of this 
     * <code>CellEditor</code> method returns <code>true</code> if 
     * the current selection is not empty.
     */
    public boolean isCutEnabled() {
        if (text == null || text.isDisposed()) {
			return false;
		}
        return text.getSelectionCount() > 0;
    }
    /**
     * The <code>TextCellEditor</code>  implementation of this 
     * <code>CellEditor</code> method returns <code>true</code>
     * if there is a selection or if the caret is not positioned 
     * at the end of the text.
     */
    public boolean isDeleteEnabled() {
        if (text == null || text.isDisposed()) {
			return false;
		}