Mercurial > projects > dwt2
annotate org.eclipse.core.commands/src/org/eclipse/core/commands/operations/IOperationApprover.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
---|---|
date | Sat, 14 Mar 2009 18:23:29 +0100 |
parents | |
children |
rev | line source |
---|---|
12
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1 /******************************************************************************* |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2 * Copyright (c) 2005 IBM Corporation and others. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3 * All rights reserved. This program and the accompanying materials |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4 * are made available under the terms of the Eclipse Public License v1.0 |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5 * which accompanies this distribution, and is available at |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6 * http://www.eclipse.org/legal/epl-v10.html |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
7 * |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
8 * Contributors: |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
9 * IBM Corporation - initial API and implementation |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
10 * Port to the D programming language: |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
11 * Frank Benoit <benoit@tionex.de> |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
12 *******************************************************************************/ |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
13 module org.eclipse.core.commands.operations.IOperationApprover; |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
14 |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
15 import org.eclipse.core.runtime.IAdaptable; |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
16 import org.eclipse.core.runtime.IStatus; |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
17 |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
18 import org.eclipse.core.commands.operations.IUndoableOperation; |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
19 import org.eclipse.core.commands.operations.IOperationHistory; |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
20 |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
21 import java.lang.all; |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
22 |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
23 /** |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
24 * <p> |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
25 * IOperationApprover defines an interface for approving the undo or redo of a |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
26 * particular operation within an operation history. Operations that are |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
27 * candidates for undo or redo have already been validated against their current |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
28 * state and according to the rules of the history. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
29 * </p> |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
30 * <p> |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
31 * By the time an IOperationApprover is consulted, the undo has already been |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
32 * requested. Approvers should return an <code>IStatus</code> object with |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
33 * severity <code>OK</code> if the operation should proceed, and any other |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
34 * severity if it should not. When an operation is not approved, it is expected |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
35 * that the object not allowing the operation has already consulted the user if |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
36 * necessary or otherwise provided any necessary information to the user about |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
37 * the fact that the operation is not approved. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
38 * </p> |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
39 * <p> |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
40 * Operation approvers must be prepared to receive the approval messages from a |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
41 * background thread. Any UI access occurring inside the implementation must be |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
42 * properly synchronized using the techniques specified by the client's widget |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
43 * library. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
44 * </p> |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
45 * |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
46 * @since 3.1 |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
47 */ |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
48 public interface IOperationApprover { |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
49 |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
50 /** |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
51 * Return a status indicating whether the specified operation should be |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
52 * redone. Any status that does not have severity <code>IStatus.OK</code> |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
53 * will not be approved. Implementers should not assume that the redo will |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
54 * be performed when the status is <code>OK</code>, since other operation |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
55 * approvers may veto the redo. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
56 * |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
57 * @param operation |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
58 * the operation to be redone |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
59 * @param history |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
60 * the history redoing the operation |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
61 * @param info |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
62 * the IAdaptable (or <code>null</code>) provided by the |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
63 * caller in order to supply UI information for prompting the |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
64 * user if necessary. When this parameter is not |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
65 * <code>null</code>, it should minimally contain an adapter |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
66 * for the org.eclipse.swt.widgets.Shell.class. Even if UI |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
67 * information is provided, the implementation of this method |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
68 * must be prepared for being called from a background thread. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
69 * Any UI access must be properly synchronized using the |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
70 * techniques specified by the client's widget library. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
71 * @return the IStatus describing whether the operation is approved. The |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
72 * redo will not proceed if the status severity is not |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
73 * <code>OK</code>, and the caller requesting the redo will be |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
74 * returned the status that caused the rejection. Any other status |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
75 * severities will not be interpreted by the history. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
76 */ |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
77 IStatus proceedRedoing(IUndoableOperation operation, |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
78 IOperationHistory history, IAdaptable info); |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
79 |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
80 /** |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
81 * Return a status indicating whether the specified operation should be |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
82 * undone. Any status that does not have severity <code>IStatus.OK</code> |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
83 * will not be approved. Implementers should not assume that the undo will |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
84 * be performed when the status is <code>OK</code>, since other operation |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
85 * approvers can veto the undo. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
86 * |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
87 * @param operation |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
88 * the operation to be undone |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
89 * @param history |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
90 * the history undoing the operation |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
91 * @param info |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
92 * the IAdaptable (or <code>null</code>) provided by the |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
93 * caller in order to supply UI information for prompting the |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
94 * user if necessary. When this parameter is not |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
95 * <code>null</code>, it should minimally contain an adapter |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
96 * for the org.eclipse.swt.widgets.Shell.class. Even if UI |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
97 * information is provided, the implementation of this method |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
98 * must be prepared for being called from a background thread. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
99 * Any UI access must be properly synchronized using the |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
100 * techniques specified by the client's widget library. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
101 * @return the IStatus describing whether the operation is approved. The |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
102 * undo will not proceed if the status severity is not |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
103 * <code>OK</code>, and the caller requesting the undo will be |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
104 * returned the status that caused the rejection. Any other status |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
105 * severities will not be interpreted by the history. |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
106 */ |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
107 IStatus proceedUndoing(IUndoableOperation operation, |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
108 IOperationHistory history, IAdaptable info); |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
109 |
bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
110 } |