001: /*
002: * Licensed to the Apache Software Foundation (ASF) under one or more
003: * contributor license agreements. See the NOTICE file distributed with
004: * this work for additional information regarding copyright ownership.
005: * The ASF licenses this file to You under the Apache License, Version 2.0
006: * (the "License"); you may not use this file except in compliance with
007: * the License. You may obtain a copy of the License at
008: *
009: * http://www.apache.org/licenses/LICENSE-2.0
010: *
011: * Unless required by applicable law or agreed to in writing, software
012: * distributed under the License is distributed on an "AS IS" BASIS,
013: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014: * See the License for the specific language governing permissions and
015: * limitations under the License.
016: */
017: package org.apache.wicket.examples.repeater;
018:
019: import java.util.Iterator;
020:
021: import org.apache.wicket.markup.html.form.Form;
022: import org.apache.wicket.markup.html.form.SubmitLink;
023: import org.apache.wicket.markup.html.form.TextField;
024: import org.apache.wicket.markup.html.link.Link;
025: import org.apache.wicket.markup.html.panel.Panel;
026: import org.apache.wicket.markup.repeater.Item;
027: import org.apache.wicket.markup.repeater.OddEvenItem;
028: import org.apache.wicket.markup.repeater.RefreshingView;
029: import org.apache.wicket.markup.repeater.ReuseIfModelsEqualStrategy;
030: import org.apache.wicket.markup.repeater.util.ModelIteratorAdapter;
031: import org.apache.wicket.model.IModel;
032: import org.apache.wicket.model.PropertyModel;
033:
034: /**
035: * Page that demonstrates using RefreshingView in a form. The component reuses
036: * its items, to allow adding or removing rows without necessarily validating
037: * the form, and preserving component state which preserves error messages, etc.
038: */
039: public class FormPage extends BasePage {
040: final Form form;
041:
042: /**
043: * constructor
044: */
045: public FormPage() {
046: form = new Form("form");
047: add(form);
048:
049: // create a repeater that will display the list of contacts.
050: RefreshingView refreshingView = new RefreshingView("simple") {
051: protected Iterator getItemModels() {
052: // for simplicity we only show the first 10 contacts
053: Iterator contacts = DatabaseLocator.getDatabase().find(
054: 0, 10, "firstName", true).iterator();
055:
056: // the iterator returns contact objects, but we need it to
057: // return models, we use this handy adapter class to perform
058: // on-the-fly conversion.
059: return new ModelIteratorAdapter(contacts) {
060:
061: protected IModel model(Object object) {
062: return new DetachableContactModel(
063: (Contact) object);
064: }
065:
066: };
067:
068: }
069:
070: protected void populateItem(final Item item) {
071: // populate the row of the repeater
072: IModel contact = item.getModel();
073: item.add(new ActionPanel("actions", contact));
074: // FIXME use CompoundPropertyModel!
075: item.add(new TextField("id", new PropertyModel(contact,
076: "id")));
077: item.add(new TextField("firstName", new PropertyModel(
078: contact, "firstName")));
079: item.add(new TextField("lastName", new PropertyModel(
080: contact, "lastName")));
081: item.add(new TextField("homePhone", new PropertyModel(
082: contact, "homePhone")));
083: item.add(new TextField("cellPhone", new PropertyModel(
084: contact, "cellPhone")));
085: }
086:
087: protected Item newItem(String id, int index, IModel model) {
088: // this item sets markup class attribute to either 'odd' or
089: // 'even' for decoration
090: return new OddEvenItem(id, index, model);
091: }
092: };
093:
094: // because we are in a form we need to preserve state of the component
095: // hierarchy (because it might contain things like form errors that
096: // would be lost if the hierarchy for each item was recreated every
097: // request by default), so we use an item reuse strategy.
098: refreshingView.setItemReuseStrategy(ReuseIfModelsEqualStrategy
099: .getInstance());
100:
101: form.add(refreshingView);
102: }
103:
104: /**
105: * Panel that houses row-actions
106: */
107: private class ActionPanel extends Panel {
108: /**
109: * @param id
110: * component id
111: * @param model
112: * model for contact
113: */
114: public ActionPanel(String id, IModel model) {
115: super (id, model);
116: add(new Link("select") {
117: public void onClick() {
118: FormPage.this .setSelected((Contact) getParent()
119: .getModelObject());
120: }
121: });
122:
123: SubmitLink removeLink = new SubmitLink("remove", form) {
124: public void onSubmit() {
125: Contact contact = (Contact) getParent()
126: .getModelObject();
127: info("Removed contact " + contact);
128: DatabaseLocator.getDatabase().delete(contact);
129: }
130: };
131: removeLink.setDefaultFormProcessing(false);
132: add(removeLink);
133: }
134: }
135: }
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