com.googlecode.wicket.jquery.ui.form.autocomplete.AutoCompleteBehavior.java Source code

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Here is the source code for com.googlecode.wicket.jquery.ui.form.autocomplete.AutoCompleteBehavior.java

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/*
 * 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 com.googlecode.wicket.jquery.ui.form.autocomplete;

import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.attributes.CallbackParameter;

import com.googlecode.wicket.jquery.core.JQueryBehavior;
import com.googlecode.wicket.jquery.core.JQueryEvent;
import com.googlecode.wicket.jquery.core.Options;
import com.googlecode.wicket.jquery.core.ajax.IJQueryAjaxAware;
import com.googlecode.wicket.jquery.core.ajax.JQueryAjaxBehavior;
import com.googlecode.wicket.jquery.core.utils.RequestCycleUtils;

/**
 * Provides a jQuery resizable behavior
 *
 * @author Sebastien Briquet - sebfz1
 */
public abstract class AutoCompleteBehavior extends JQueryBehavior
        implements IJQueryAjaxAware, IAutoCompleteListener {
    private static final long serialVersionUID = 1L;
    private static final String METHOD = "autocomplete";

    private JQueryAjaxBehavior onSelectBehavior = null;

    /**
     * Constructor
     * @param selector the html selector (ie: "#myId")
     */
    public AutoCompleteBehavior(String selector) {
        this(selector, new Options());
    }

    /**
     * Constructor
     * @param selector the html selector (ie: "#myId")
     * @param options the {@link Options}
     */
    public AutoCompleteBehavior(String selector, Options options) {
        super(selector, METHOD, options);
    }

    // Methods //
    @Override
    public void bind(Component component) {
        super.bind(component);

        component.add(this.onSelectBehavior = this.newOnSelectBehavior());
    }

    // Events //
    @Override
    public void onConfigure(Component component) {
        super.onConfigure(component);

        this.setOption("select", this.onSelectBehavior.getCallbackFunction());
    }

    // IJQueryAjaxAware //
    @Override
    public void onAjax(AjaxRequestTarget target, JQueryEvent event) {
        if (event instanceof SelectEvent) {
            this.onSelect(target, ((SelectEvent) event).getIndex());
        }
    }

    // Factories //
    /**
     * Gets a new {@link JQueryAjaxBehavior} that will be called on 'select' javascript method
     * @return the {@link JQueryAjaxBehavior}
     */
    protected JQueryAjaxBehavior newOnSelectBehavior() {
        return new JQueryAjaxBehavior(this) {

            private static final long serialVersionUID = 1L;

            @Override
            protected CallbackParameter[] getCallbackParameters() {
                return new CallbackParameter[] { CallbackParameter.context("event"),
                        CallbackParameter.context("ui"), CallbackParameter.resolved("index", "ui.item.id") };
            }

            @Override
            protected JQueryEvent newEvent() {
                return new SelectEvent();
            }
        };
    }

    // Event classes //
    /**
     * Provides an event object that will be broadcasted by the {@link JQueryAjaxBehavior} select callback
     *
     */
    protected static class SelectEvent extends JQueryEvent {
        private final int index;

        public SelectEvent() {
            this.index = RequestCycleUtils.getQueryParameterValue("index").toInt(1) - 1;
        }

        public int getIndex() {
            return this.index;
        }
    }
}