Bug 270092 [CellEditors] [cell editors] TextCellEditor should not specify minimum size
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TextCellEditor.java
return text.getSelectionCount() > 0
                || text.getCaretPosition() < text.getCharCount();
    }
    /**
     * The <code>TextCellEditor</code>  implementation of this 
     * <code>CellEditor</code> method always returns <code>true</code>.
     */
    public boolean isPasteEnabled() {
        if (text == null || text.isDisposed()) {
			return false;
		}
        return true;
    }
    /**
     * Check if save all is enabled
     * @return true if it is 
     */
    public boolean isSaveAllEnabled() {
        if (text == null || text.isDisposed()) {
			return false;
		}
        return true;
    }
    /**
     * Returns <code>true</code> if this cell editor is
     * able to perform the select all action.
     * <p>
     * This default implementation always returns 
     * <code>false</code>.
     * </p>