/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.click.examples.page.general;
import java.util.List;
import java.util.Map;
import org.apache.click.Context;
import org.apache.click.control.ActionLink;
import org.apache.click.control.Field;
import org.apache.click.control.TextField;
import org.apache.click.element.CssImport;
import org.apache.click.element.CssStyle;
import org.apache.click.element.JsImport;
import org.apache.click.element.JsScript;
import org.apache.click.examples.page.BorderPage;
import org.apache.click.util.ClickUtils;
/**
* This example demonstrates how to manipulate the Head elements of a Page.
*
* @author Bob Schellink
*/
public class PageHeadDemo extends BorderPage {
private ActionLink link;
private Field field;
public PageHeadDemo() {
// When this link is clicked it will toggle the Field's disabled attribute
link = new ActionLink("link", "Hide");
link.setId("link-id");
// Create a new TextField and add it the Page controls
field = new TextField("field");
addControl(link);
addControl(field);
}
/**
* Return the Page list of HEAD elements.
*
* @return the Page list of HEAD elements
*/
public List getHeadElements() {
if (headElements == null) {
headElements = super.getHeadElements();
// Add a Css import to the Page
headElements.add(new CssImport("/general/page-head-demo.css"));
// Add inline Css content to the Page that increases the field font-size
headElements.add(new CssStyle("#" + field.getId() + " { font-size: 18px; }"));
// Add the JQuery library to the Page
headElements.add(new JsImport("/assets/js/jquery-1.3.2.js"));
// Add a JQuery template which adds a 'click' listener to the link
// that will show/hide the field
Context context = getContext();
// Create a template model and pass in the linkId
Map jsModel = ClickUtils.createTemplateModel(this, context);
jsModel.put("linkId", '#' + link.getId());
String content =
context.renderTemplate("/general/page-head-demo.js", jsModel);
headElements.add(new JsScript(content));
}
return headElements;
}
}