| /********************************************************************** |
| Copyright (c) 2000, 2002 IBM Corp. and others. |
| All rights reserved. This program and the accompanying materials |
| are made available under the terms of the Common Public License v0.5 |
| which accompanies this distribution, and is available at |
| http://www.eclipse.org/legal/cpl-v05.html |
| |
| Contributors: |
| IBM Corporation - Initial API and implementation |
| **********************************************************************/ |
| package org.eclipse.ui.texteditor; |
| |
| |
| |
| /** |
| * Extension interface for actions. Actions implementing this interface not |
| * only manage an enable/disable state but also manage a "hypothetical" |
| * enable state, depending on whether the target they work on is writable |
| * or read-only. |
| */ |
| public interface IReadOnlyDependent { |
| |
| /** |
| * Returns whether the actions would be enabled if its target |
| * would be enabled given the writable state described by <code>isWritable</code>. |
| * <code>isEnabled()</code> and <code>isEnabled(boolean)</code> holds the following |
| * invariants: |
| * isEnabled() == false, iff isEnabled(true) == false || isEnabled(false) == false |
| * isEnabled() == true, iff isEnabled(true) == true || isEnabled(false) == true |
| * |
| * @param isWritable |
| * @return the hypothetical enable state of the action |
| */ |
| boolean isEnabled(boolean isWritable); |
| } |
