com.googlecode.wicket.kendo.ui.widget.menu.ContextMenuBehavior.java Source code

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Here is the source code for com.googlecode.wicket.kendo.ui.widget.menu.ContextMenuBehavior.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.kendo.ui.widget.menu;

import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.util.lang.Args;

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;

/**
 * Provides a Kendo UI context menu widget
 *
 * @author Martin Grigorov - martin-g
 * @since 6.20.0
 */
public abstract class ContextMenuBehavior extends MenuBehavior {
    private static final long serialVersionUID = 1L;
    public static final String METHOD = "kendoContextMenu";

    private final IContextMenuListener listener;
    private JQueryAjaxBehavior onOpenAjaxBehavior = null;

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

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

        this.listener = Args.notNull(listener, "listener");
    }

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

        if (this.listener.isOpenEventEnabled()) {
            this.onOpenAjaxBehavior = this.newOnOpenAjaxBehavior(this);
            component.add(this.onOpenAjaxBehavior);
        }
    }

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

        if (this.onOpenAjaxBehavior != null) {
            this.setOption("open", this.onOpenAjaxBehavior.getCallbackFunction());
        }
    }

    // Events //

    @Override
    public void onAjax(AjaxRequestTarget target, JQueryEvent event) {
        super.onAjax(target, event);

        if (event instanceof OpenEvent) {
            this.listener.onOpen(target);
        }
    }

    // Factories //

    /**
     * Gets a new {@link JQueryAjaxBehavior} that will be wired to the 'open' event
     *
     * @param source the {@link IJQueryAjaxAware}
     * @return a new {@code OnOpenAjaxBehavior} by default
     */
    protected JQueryAjaxBehavior newOnOpenAjaxBehavior(IJQueryAjaxAware source) {
        return new OnOpenAjaxBehavior(source);
    }

    // Ajax classes //

    /**
     * Provides a {@link JQueryAjaxBehavior} that aims to be wired to the 'open' event
     */
    public static class OnOpenAjaxBehavior extends JQueryAjaxBehavior {
        private static final long serialVersionUID = 1L;

        public OnOpenAjaxBehavior(IJQueryAjaxAware source) {
            super(source);
        }

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

    // Event objects //

    /**
     * Provides an event object that will be broadcasted by the {@link OnOpenAjaxBehavior} callback
     */
    protected static class OpenEvent extends JQueryEvent {
    }
}