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/*
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 * Copyright 2011 GRNET S.A. All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or
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 * without modification, are permitted provided that the following
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 * conditions are met:
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 *
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 *   1. Redistributions of source code must retain the above
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 *      copyright notice, this list of conditions and the following
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 *      disclaimer.
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 *
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 *   2. Redistributions in binary form must reproduce the above
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 *      copyright notice, this list of conditions and the following
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 *      disclaimer in the documentation and/or other materials
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 *      provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 * POSSIBILITY OF SUCH DAMAGE.
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 *
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 * The views and conclusions contained in the software and
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 * documentation are those of the authors and should not be
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 * interpreted as representing official policies, either expressed
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 * or implied, of GRNET S.A.
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 */
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package gr.grnet.pithos.web.client;
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import com.google.gwt.event.dom.client.ClickEvent;
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import com.google.gwt.event.dom.client.ClickHandler;
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import com.google.gwt.resources.client.ClientBundle;
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import com.google.gwt.resources.client.ImageResource;
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import com.google.gwt.user.client.Command;
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import com.google.gwt.user.client.ui.AbstractImagePrototype;
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import com.google.gwt.user.client.ui.MenuBar;
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import com.google.gwt.user.client.ui.MenuItem;
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import com.google.gwt.user.client.ui.PopupPanel;
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/**
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 * The 'Help' menu implementation.
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 */
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public class HelpMenu extends PopupPanel implements ClickHandler {
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        /**
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         * The widget's images.
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         */
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        private final Images images;
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        private MenuBar contextMenu  = new MenuBar(true);
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        /**
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         * An image bundle for this widget's images.
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         */
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        public interface Images extends ClientBundle{
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                @Source("gr/grnet/pithos/resources/khelpcenter.png")
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                ImageResource userGuide();
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                @Source("gr/grnet/pithos/resources/linewidth.png")
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                ImageResource terms();
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                @Source("gr/grnet/pithos/resources/bell.png")
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                ImageResource reportAbuse();
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                @Source("gr/grnet/pithos/resources/bug.png")
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                ImageResource reportBug();
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                @Source("gr/grnet/pithos/resources/info.png")
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                ImageResource about();
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                @Source("gr/grnet/pithos/resources/edit_add.png")
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                ImageResource upgradeQuota();
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        }
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        /**
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         * The widget's constructor.
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         *
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         * @param newImages the image bundle passed on by the parent object
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         */
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        public HelpMenu(final Images newImages) {
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                // The popup's constructor's argument is a boolean specifying that it
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                // auto-close itself when the user clicks outside of it.
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                super(true);
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                setAnimationEnabled(true);
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                images = newImages;
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                createMenu();
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                add(contextMenu);
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        }
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        @Override
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        public void onClick(ClickEvent event) {
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                HelpMenu menu = new HelpMenu(images);
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                int left = event.getRelativeElement().getAbsoluteLeft();
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                int top = event.getRelativeElement().getAbsoluteTop() + event.getRelativeElement().getOffsetHeight();
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                menu.setPopupPosition(left, top);
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                menu.show();
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        }
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        public MenuBar createMenu() {
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                contextMenu.clearItems();
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                contextMenu.setAutoOpen(false);
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                Command hideCommand = new Command() {
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                        @Override
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                        public void execute() {
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                                hide();
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                        }
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                };
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                Command aboutCommand = new Command(){
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                        @Override
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                        public void execute() {
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                                AboutDialog dlg = new AboutDialog();
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                                dlg.center();
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                        }
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                };
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                MenuItem userGuideItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.userGuide()).getHTML() + "&nbsp;<a class='hidden-link' " +
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                                        "href='/userguide/el' target='_blank'>User Guide</a></span>", true, hideCommand);
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                contextMenu.addItem(userGuideItem);
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                userGuideItem.getElement().setId("topMenu.help.userGuide");
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                MenuItem termsItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.terms()).getHTML() + "&nbsp;<a class='hidden-link' " +
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                                        "href='/terms' target='_blank'>Terms &amp; Conditions</a></span>", true, hideCommand);
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                termsItem.getElement().setId("topMenu.help.terms");
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                contextMenu.addItem(termsItem);
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                MenuItem reportAbuseItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.reportAbuse()).getHTML() + "&nbsp;<a class='hidden-link' " +
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                                        "href='/report-abuse' target='_blank'>Report abuse</a></span>", true, hideCommand);
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                reportAbuseItem.getElement().setId("topMenu.help.reportAbuse");
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                contextMenu.addItem(reportAbuseItem);
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                MenuItem upgradeQuotaItem= new MenuItem("<span>" + AbstractImagePrototype.create(images.upgradeQuota()).getHTML() + "&nbsp;<a class='hidden-link' " +
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                                        "href='/pithos/coupon' target='_blank'>Upgrade quota</a></span>", true, hideCommand);
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                upgradeQuotaItem.getElement().setId("topMenu.help.upgradeQuota");
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                contextMenu.addItem(upgradeQuotaItem);
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                MenuItem reportBugItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.reportBug()).getHTML() + "&nbsp;<a class='hidden-link' " +
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                                        "href='http://code.google.com/p/pithos/issues/list' target='_blank'>Report bug</a></span>", true, hideCommand);
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                reportBugItem.getElement().setId("topMenu.help.reportBug");
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                contextMenu.addItem(reportBugItem);
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                MenuItem aboutItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.about()).getHTML() + "&nbsp;About</span>", true, aboutCommand);
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                aboutItem.getElement().setId("topMenu.help.about");
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                contextMenu.addItem(aboutItem);
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                return contextMenu;
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        }
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}