1 /**
2 * Copyright 2005-2012 The Kuali Foundation
3 *
4 * Licensed under the Educational Community License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.opensource.org/licenses/ecl2.php
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.kuali.rice.krad.uif.layout;
17
18 import org.kuali.rice.krad.uif.container.CollectionGroup;
19 import org.kuali.rice.krad.uif.element.Action;
20 import org.kuali.rice.krad.uif.field.FieldGroup;
21 import org.kuali.rice.krad.uif.view.View;
22 import org.kuali.rice.krad.uif.field.Field;
23
24 import java.util.List;
25
26 /**
27 * Layout manager implementations that work with a collection (such as a table
28 * layout) should implement this interface for building the collection
29 * <code>Component</code> instances
30 *
31 * <p>
32 * Unlike other <code>Group</code> instances, <code>CollectionGroup</code>
33 * instances need to generate new instances of the configured components for
34 * each line of the collection. The <code>Field</code> instances for each line
35 * are wrapped differently depending on what <code>LayoutManager</code> is being
36 * applied. Therefore as the collection lines are being built (during the
37 * applyModel phase) this method will be invoked on the manager so that it may
38 * setup the line as needed.
39 * </p>
40 *
41 * @author Kuali Rice Team (rice.collab@kuali.org)
42 * @see org.kuali.rice.krad.uif.container.CollectionGroupBuilder
43 */
44 public interface CollectionLayoutManager extends LayoutManager {
45
46 /**
47 * Call to the layout manager to build the components necessary for the
48 * given collection line
49 *
50 * <p>
51 * As the collection is being iterated over by the
52 * <code>CollectionGroupBuilder</code> this method is invoked for each line.
53 * The builder will create copies of the configured fields and actions for
54 * the line and pass into the layout manager so they can be assembled
55 * </p>
56 *
57 * @param view
58 * - view instance the collection belongs to
59 * @param model
60 * - object containing the data
61 * @param collectionGroup
62 * - collection group the layout manager applies to
63 * @param lineFields
64 * - the field instances for the collection line which were
65 * copied from the collection groups items, id and binding
66 * already updated
67 * @param subCollectionFields
68 * - group field instances for each sub collection of the current
69 * line
70 * @param bindingPath
71 * - binding path for the groups items (if DataBinding)
72 * @param actions
73 * - list of action instances for the collection line, with id
74 * and binding updated
75 * @param idSuffix
76 * - suffix to use for any generated items
77 * @param currentLine
78 * - object instance for the current line, or null if add line
79 * @param lineIndex
80 * - index of the collection line being iterated over, or -1 if
81 * the add line
82 */
83 public void buildLine(View view, Object model, CollectionGroup collectionGroup, List<Field> lineFields,
84 List<FieldGroup> subCollectionFields, String bindingPath, List<Action> actions, String idSuffix,
85 Object currentLine, int lineIndex);
86
87 /**
88 * Field group instance that is used as a prototype for creating the
89 * sub-collection field groups. For each sub-collection a copy of the
90 * prototype is made and the list will be passed to the layout manager
91 * buildLine method
92 *
93 * @return GroupField instance to use as prototype
94 */
95 public FieldGroup getSubCollectionFieldGroupPrototype();
96 }