Bug 270092 [CellEditors] [cell editors] TextCellEditor should not specify minimum size
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TextCellEditor.java
* <p>
     * Subclasses may override
     * </p>
     * @return <code>true</code> if select all is possible,
     *  <code>false</code> otherwise
     */
    public boolean isSelectAllEnabled() {
        if (text == null || text.isDisposed()) {
			return false;
		}
        return text.getCharCount() > 0;
    }
    /**
     * Processes a key release event that occurred in this cell editor.
     * <p>
     * The <code>TextCellEditor</code> implementation of this framework method 
     * ignores when the RETURN key is pressed since this is handled in 
     * <code>handleDefaultSelection</code>.
     * An exception is made for Ctrl+Enter for multi-line texts, since
     * a default selection event is not sent in this case. 
     * </p>
     *
     * @param keyEvent the key event
     */
    protected void keyReleaseOccured(KeyEvent keyEvent) {
        if (keyEvent.character == '\r') {