ApplicationSettings.java

/*
 * Copyright 2012 Igor Vaynberg
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with
 * the License. You may obtain a copy of the License in the LICENSE file, or 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.vaynberg.wicket.select2;

import org.apache.wicket.Application;
import org.apache.wicket.MetaDataKey;
import org.apache.wicket.protocol.http.WebApplication;
import org.apache.wicket.request.resource.PackageResourceReference;
import org.apache.wicket.request.resource.ResourceReference;

/**
 * Application-wide settings that apply to all Select2 components.
 * 
 * The settings object is retreived via the static {@link #get()} method and is usually configured in the
 * {@link WebApplication#init()} method.
 * 
 * @author igor
 */
public class ApplicationSettings {

    private static final MetaDataKey<ApplicationSettings> KEY = new MetaDataKey<ApplicationSettings>() {
    };

    private ResourceReference javaScriptReference = new PackageResourceReference(ApplicationSettings.class,
        "res/select2.js");
    private ResourceReference mouseWheelReference = new PackageResourceReference(ApplicationSettings.class,
        "res/jquery.mousewheel.js");
    private ResourceReference cssReference = new PackageResourceReference(ApplicationSettings.class,
        "res/select2.css");
    private ResourceReference jqueryUIReference = new PackageResourceReference(ApplicationSettings.class,
        "res/jquery-ui-1.9.0.min.js");

    private boolean includeMouseWheel = true;
    private boolean includeJavascript = true;
    private boolean includeCss = true;
    private boolean includeJqueryUI = true;

    /**
     * Private constructor, use {@link #get()} instead.
     */
    private ApplicationSettings() {
    }

    public boolean isIncludeJavascript() {
	return includeJavascript;
    }

    public ApplicationSettings setIncludeJavascript(boolean includeJavascript) {
	this.includeJavascript = includeJavascript;
	return this;
    }

    public boolean isIncludeCss() {
	return includeCss;
    }

    public ApplicationSettings setIncludeCss(boolean includeCss) {
	this.includeCss = includeCss;
	return this;
    }

    public boolean isIncludeJqueryUI() {
    return includeJqueryUI;
    }

    public ApplicationSettings setIncludeJqueryUI(boolean includeJqueryUI) {
    this.includeJqueryUI = includeJqueryUI;
    return this;
    }

    public ResourceReference getJavaScriptReference() {
	return javaScriptReference;
    }

    public ApplicationSettings setJavaScriptReference(ResourceReference javaScriptReference) {
	this.javaScriptReference = javaScriptReference;
	return this;
    }

    public ResourceReference getCssReference() {
	return cssReference;
    }

    public ApplicationSettings setCssReference(ResourceReference cssReference) {
	this.cssReference = cssReference;
	return this;
    }

    public boolean isIncludeMouseWheel() {
	return includeMouseWheel;
    }

    public ApplicationSettings setIncludeMouseWheel(boolean includeJqueryMouseWheelPlugin) {
	this.includeMouseWheel = includeJqueryMouseWheelPlugin;
	return this;
    }

    public ResourceReference getMouseWheelReference() {
	return mouseWheelReference;
    }

    public ApplicationSettings setMouseWheelReference(ResourceReference mousewheelReference) {
	this.mouseWheelReference = mousewheelReference;
	return this;
    }

    public ResourceReference getJqueryUIReference() {
    return jqueryUIReference;
    }

    public ApplicationSettings setJqueryUIReference(ResourceReference jqueryUIReference) {
    this.jqueryUIReference = jqueryUIReference;
    return this;
    }

    /**
     * Retrieves the instance of settings object.
     * 
     * @return settings instance
     */
    public static ApplicationSettings get() {
	// FIXME Application should provide setMetadataIfAbsent()
	Application application = Application.get();
	ApplicationSettings settings = application.getMetaData(KEY);
	if (settings == null) {
	    synchronized (application) {
		settings = application.getMetaData(KEY);
		if (settings == null) {
		    settings = new ApplicationSettings();
		    application.setMetaData(KEY, settings);
		}
	    }
	}
	return application.getMetaData(KEY);
    }

}