com.pronoiahealth.olhie.resources.OlhieResourceInjector.java Source code

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Here is the source code for com.pronoiahealth.olhie.resources.OlhieResourceInjector.java

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/*******************************************************************************
 * Copyright (c) 2013 Pronoia Health LLC.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Pronoia Health LLC - initial API and implementation
 *******************************************************************************/
package com.pronoiahealth.olhie.resources;

import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.HeadElement;
import com.google.gwt.dom.client.LinkElement;
import com.google.gwt.dom.client.ScriptElement;
import com.google.gwt.resources.client.TextResource;

/**
 * OlhieResourceInjector.java<br/>
 * Responsibilities:<br/>
 * 1. Inject css and js into application<br/>
 *
 * @author John DeStefano
 * @version 1.0
 * @since May 26, 2013
 *
 */
public class OlhieResourceInjector {

    private static HeadElement head;

    /**
     * Called to configure resources
     */
    public static void configure() {
        configureWithCssFile();
        configureJs();
    }

    /**
     * Injects the required CSS styles and JavaScript files into the document
     * header.
     * 
     * <pre>
     * It's for NoStyle Module.
     * </pre>
     */
    public static void configureWithCssFile() {
        //OlhieResources.INSTANCE.stylescss().ensureInjected();
        OlhieResources.INSTANCE.bookcasecss().ensureInjected();
        OlhieResources.INSTANCE.cbgbuttoncss().ensureInjected();
        OlhieResources.INSTANCE.mainscreencss().ensureInjected();
        OlhieResources.INSTANCE.searchscreencss().ensureInjected();
        OlhieResources.INSTANCE.sidebarmenucss().ensureInjected();
        OlhieResources.INSTANCE.starratingcss().ensureInjected();
        OlhieResources.INSTANCE.bulletinboardcss().ensureInjected();
        OlhieResources.INSTANCE.ioscheckboxcss().ensureInjected();
        OlhieResources.INSTANCE.logindialogcss().ensureInjected();
        OlhieResources.INSTANCE.errordialogcss().ensureInjected();
        OlhieResources.INSTANCE.registerdialogcss().ensureInjected();
        OlhieResources.INSTANCE.commentdialogcss().ensureInjected();
        OlhieResources.INSTANCE.newsdisplaycss().ensureInjected();
        OlhieResources.INSTANCE.newbookcss().ensureInjected();
        OlhieResources.INSTANCE.booklist3dcss().ensureInjected();
        OlhieResources.INSTANCE.viewbookassetcss().ensureInjected();
        OlhieResources.INSTANCE.lookupuserdialogcss().ensureInjected();
        OlhieResources.INSTANCE.chatdialogcss().ensureInjected();
        OlhieResources.INSTANCE.bookcommentcss().ensureInjected();
        OlhieResources.INSTANCE.bookcommentdisplaycss().ensureInjected();
        OlhieResources.INSTANCE.bookscrollercss().ensureInjected();
        OlhieResources.INSTANCE.glasspanelspinnercss().ensureInjected();
        OlhieResources.INSTANCE.carouselsliderwidgetcss().ensureInjected();
        OlhieResources.INSTANCE.eventscss().ensureInjected();
        OlhieResources.INSTANCE.jqueryuimincss();
        OlhieResources.INSTANCE.fullcalendarcss().ensureInjected();
        OlhieResources.INSTANCE.fullcalendarprintcss().ensureInjected();
        OlhieResources.INSTANCE.animatemincss().ensureInjected();
        OlhieResources.INSTANCE.jqueryminuicss().ensureInjected();
        OlhieResources.INSTANCE.tvcss().ensureInjected();
        OlhieResources.INSTANCE.admincss().ensureInjected();
        /*injectResourceCssAsFile("gwt_overrides.css");*/
    }

    /**
     * Injects the required third party javascript header.
     */
    public static void configureJs() {

        // JQuery might be there already from GWTBootstrap
        //if (isNotLoadedJquery()) {
        //   injectJs(OlhieResources.INSTANCE.jquery172minjs());
        //}
        injectJs(OlhieResources.INSTANCE.jquerycontentcarouseljs());
        injectJs(OlhieResources.INSTANCE.jqueryeasingjs());
        injectJs(OlhieResources.INSTANCE.jquerymousewheeljs());
        injectJs(OlhieResources.INSTANCE.jqueryuicustomminjs());
        injectJs(OlhieResources.INSTANCE.fullcalendarminjs());
    }

    /**
     * Inject public resource css file as a file.
     * 
     * @param filename
     *            inject file name
     */
    public static void injectResourceCssAsFile(String filename) {
        LinkElement link = Document.get().createLinkElement();
        link.setType("text/css");
        link.setRel("stylesheet");
        link.setHref(GWT.getModuleName() + "/css/" + filename);
        getHead().appendChild(link);
    }

    /**
     * Inject javascript in head element
     * 
     * @param r
     */
    private static void injectJs(TextResource r) {
        String jsStr = r.getText();
        HeadElement head = getHead();
        ScriptElement element = createScriptElement();
        element.setText(jsStr);
        head.appendChild(element);
    }

    /**
     * Get page head element
     * 
     * @return
     */
    private static HeadElement getHead() {
        if (head == null) {
            Element elt = Document.get().getElementsByTagName("head").getItem(0);
            assert elt != null : "The host HTML page does not have a <head> element"
                    + " which is required by StyleInjector";
            head = HeadElement.as(elt);
        }
        return head;
    }

    /**
     * Creates a script element
     * 
     * @return
     */
    private static ScriptElement createScriptElement() {
        ScriptElement script = Document.get().createScriptElement();
        script.setAttribute("type", "text/javascript");
        script.setAttribute("charset", "UTF-8");
        return script;
    }

    /**
     * Check to see if JQuery is already present
     * 
     * @return
     */
    private native static boolean isNotLoadedJquery() /*-{
                                                      return !$wnd['jQuery'] || (typeof $wnd['jQuery'] !== 'function');
                                                      }-*/;

}