01: /*
02: * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
03: * for visualizing and manipulating spatial features with geometry and attributes.
04: *
05: * Copyright (C) 2003 Vivid Solutions
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License
09: * as published by the Free Software Foundation; either version 2
10: * of the License, or (at your option) any later version.
11: *
12: * This program is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: * GNU General Public License for more details.
16: *
17: * You should have received a copy of the GNU General Public License
18: * along with this program; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20: *
21: * For more information, contact:
22: *
23: * Vivid Solutions
24: * Suite #1A
25: * 2328 Government Street
26: * Victoria BC V8T 5G5
27: * Canada
28: *
29: * (250)385-6040
30: * www.vividsolutions.com
31: */
32:
33: package com.vividsolutions.jump.workbench.plugin;
34:
35: import java.util.ArrayList;
36: import java.util.Iterator;
37:
38: import javax.swing.JComponent;
39:
40: //<<TODO:DOC>> Create a package comment saying that the classes in this package
41: //are the framework for context-sensitive enabling of menus. Give an example
42: //of the use of this framework. [Jon Aquino]
43: /**
44: * A sequence of EnableChecks treated as one.
45: */
46: public class MultiEnableCheck implements EnableCheck {
47: private ArrayList enableChecks = new ArrayList();
48:
49: /**
50: *@param tooltip help for the menu item
51: */
52: public MultiEnableCheck() {
53: }
54:
55: public String check(JComponent component) {
56: for (Iterator i = enableChecks.iterator(); i.hasNext();) {
57: EnableCheck enableCheck = (EnableCheck) i.next();
58: String errorMessage = enableCheck.check(component);
59:
60: if (errorMessage != null) {
61: return errorMessage;
62: }
63: }
64:
65: return null;
66: }
67:
68: /**
69: *@return this, to allow "method chaining"
70: */
71: public MultiEnableCheck add(EnableCheck enableCheck) {
72: enableChecks.add(enableCheck);
73:
74: return this;
75: }
76: }
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