001// Copyright 2008, 2010, 2011, 2012 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007// http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.corelib.components;
016
017import org.apache.tapestry5.ComponentResources;
018import org.apache.tapestry5.MarkupWriter;
019import org.apache.tapestry5.annotations.SupportsInformalParameters;
020import org.apache.tapestry5.ioc.annotations.Inject;
021
022/**
023 * Used inside an {@link org.apache.tapestry5.corelib.components.AjaxFormLoop} component to spur the addition of a new
024 * row. Triggers a server-side {@linkplain org.apache.tapestry5.EventConstants#ADD_ROW addRow} event on the
025 * AjaxFormLoop, which must return the newly added object, which will be rendered in the body of the AjaxFormLoop and
026 * sent to the client web browser.
027 *
028 * @tapestrydoc
029 */
030@SupportsInformalParameters
031public class AddRowLink
032{
033    @Inject
034    private ComponentResources resources;
035
036    void beginRender(MarkupWriter writer)
037    {
038        writer.element("a", "href", "#", "data-afl-trigger", "add");
039
040        resources.renderInformalParameters(writer);
041    }
042
043    void afterRender(MarkupWriter writer)
044    {
045        writer.end();
046    }
047}