Package: UserActionProvider
UserActionProvider
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getOptionalDefaultAction() |
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of(UserAction[]) |
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Coverage
1: /*
2: * *************************************************************************************************************************************************************
3: *
4: * TheseFoolishThings: Miscellaneous utilities
5: * http://tidalwave.it/projects/thesefoolishthings
6: *
7: * Copyright (C) 2009 - 2024 by Tidalwave s.a.s. (http://tidalwave.it)
8: *
9: * *************************************************************************************************************************************************************
10: *
11: * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
12: * You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
17: * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
18: *
19: * *************************************************************************************************************************************************************
20: *
21: * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
22: * git clone https://github.com/tidalwave-it/thesefoolishthings-src
23: *
24: * *************************************************************************************************************************************************************
25: */
26: package it.tidalwave.role.ui;
27:
28: import javax.annotation.Nonnull;
29: import java.util.Collection;
30: import java.util.List;
31: import java.util.Optional;
32: import it.tidalwave.util.NotFoundException;
33:
34: /***************************************************************************************************************************************************************
35: *
36: * A role that provides {@link UserAction}s.
37: *
38: * @stereotype role
39: *
40: * @author Fabrizio Giudici
41: *
42: **************************************************************************************************************************************************************/
43: public interface UserActionProvider
44: {
45: public static final Class<UserActionProvider> _UserActionProvider_ = UserActionProvider.class;
46:
47: /***********************************************************************************************************************************************************
48: * Returns a collection of {@link UserAction}s.
49: *
50: * @return a collection of actions
51: **********************************************************************************************************************************************************/
52: @Nonnull
53: public Collection<? extends UserAction> getActions();
54:
55: /***********************************************************************************************************************************************************
56: * Returns the default action, if available.
57: *
58: *
59: * @return the default action
60: * @throws NotFoundException if there's no default action
61: * @deprecated Use {@link #getOptionalDefaultAction()}
62: **********************************************************************************************************************************************************/
63: @Nonnull @Deprecated
64: public UserAction getDefaultAction()
65: throws NotFoundException;
66:
67: /***********************************************************************************************************************************************************
68: * Returns the default action, if available.
69: *
70: * @since 3.1-ALPHA-2
71: * @return the default action
72: **********************************************************************************************************************************************************/
73: @Nonnull
74: public default Optional<UserAction> getOptionalDefaultAction()
75: {
76: try
77: {
78: return Optional.of(getDefaultAction());
79: }
80: catch (NotFoundException e)
81: {
82: return Optional.empty();
83: }
84: }
85:
86: /***********************************************************************************************************************************************************
87: * Factory method which creates an instance out of an array of {@link UserAction}s. The first one is considered the
88: * default action.
89: *
90: * @since 3.1-ALPHA-2
91: * @param actions the actions
92: * @return the {@code UserActionProvider}
93: **********************************************************************************************************************************************************/
94: @Nonnull
95: public static UserActionProvider of (@Nonnull final UserAction ... actions)
96: {
97: return new UserActionProvider()
98: {
99: @Override @Nonnull
100: public Collection<? extends UserAction> getActions()
101: {
102: return List.of(actions);
103: }
104:
105: @Override @Nonnull
106: public UserAction getDefaultAction()
107: throws NotFoundException
108: {
109: if (actions.length == 0)
110: {
111: throw new NotFoundException();
112: }
113:
114: return actions[0];
115: }
116: };
117: }
118: }