Synnefo

/*

 * Copyright 2009 Electronic Business Systems Ltd.

 *

 * This file is part of GSS.

 *

 * GSS is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * GSS is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.

 */

package gr.ebs.gss.client;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.resources.client.ClientBundle;

import com.google.gwt.resources.client.ImageResource;

import com.google.gwt.user.client.Command;

import com.google.gwt.user.client.ui.AbstractImagePrototype;

import com.google.gwt.user.client.ui.MenuBar;

import com.google.gwt.user.client.ui.PopupPanel;

/**

 * The 'Help' menu implementation.

 */

public class HelpMenu extends PopupPanel implements ClickHandler {

        /**

         * The widget's images.

         */

        private final Images images;

        private MenuBar contextMenu  = new MenuBar(true);

        /**

         * An image bundle for this widget's images.

         */

        public interface Images extends ClientBundle{

                @Source("gr/ebs/gss/resources/khelpcenter.png")

                ImageResource userGuide();

                @Source("gr/ebs/gss/resources/linewidth.png")

                ImageResource terms();

                @Source("gr/ebs/gss/resources/bell.png")

                ImageResource reportAbuse();

                @Source("gr/ebs/gss/resources/info.png")

                ImageResource about();

        }

        /**

         * The widget's constructor.

         *

         * @param newImages the image bundle passed on by the parent object

         */

        public HelpMenu(final Images newImages) {

                // The popup's constructor's argument is a boolean specifying that it

                // auto-close itself when the user clicks outside of it.

                super(true);

                setAnimationEnabled(true);

                images = newImages;

                createMenu();

                add(contextMenu);

        }

        public void onClick(ClickEvent event) {

                HelpMenu menu = new HelpMenu(images);

                int left = event.getRelativeElement().getAbsoluteLeft();

                int top = event.getRelativeElement().getAbsoluteTop() + event.getRelativeElement().getOffsetHeight();

                menu.setPopupPosition(left, top);

                menu.show();

        }

        public MenuBar createMenu() {

                contextMenu.clearItems();

                contextMenu.setAutoOpen(false);

                Command hideCommand = new Command() {

                        public void execute() {

                                hide();

                        }

                };

                Command aboutCommand = new Command(){

                        public void execute() {

                                AboutDialog dlg = new AboutDialog();

                                dlg.center();

                        }

                };

                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.userGuide()).getHTML() + "&nbsp;<a class='hidden-link' " +

                                        "href='/userguide/el' target='_blank'>User Guide</a></span>", true, hideCommand);

                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.terms()).getHTML() + "&nbsp;<a class='hidden-link' " +

                                        "href='/terms' target='_blank'>Terms &amp; Conditions</a></span>", true, hideCommand);

                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.reportAbuse()).getHTML() + "&nbsp;<a class='hidden-link' " +

                                "href='/report-abuse' target='_blank'>Report abuse</a></span>", true, hideCommand);

                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.about()).getHTML() + "&nbsp;About</span>", true, aboutCommand);

                return contextMenu;

        }

}