Synnefo » Pithos Web Client

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client;

import gr.grnet.pithos.web.client.commands.EmptyTrashCommand;

import gr.grnet.pithos.web.client.commands.NewFolderCommand;

import gr.grnet.pithos.web.client.commands.PropertiesCommand;

import gr.grnet.pithos.web.client.commands.RefreshCommand;

import gr.grnet.pithos.web.client.commands.UploadFileCommand;

import gr.grnet.pithos.web.client.foldertree.File;

import gr.grnet.pithos.web.client.foldertree.Folder;

import gr.grnet.pithos.web.client.rest.resource.FileResource;

import java.util.List;

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.MenuItem;

/**

 * The 'File' menu implementation.

 */

public class FileMenu extends MenuBar {

        /**

         * The widget's images.

         */

        private final Images images;

        /**

         * An image bundle for this widgets images.

         */

        public interface Images extends ClientBundle,FilePropertiesDialog.Images {

                @Source("gr/grnet/pithos/resources/folder_new.png")

                ImageResource folderNew();

                @Source("gr/grnet/pithos/resources/folder_outbox.png")

                ImageResource fileUpdate();

                @Source("gr/grnet/pithos/resources/view_text.png")

                ImageResource viewText();

                @Override

                @Source("gr/grnet/pithos/resources/folder_inbox.png")

                ImageResource download();

                @Source("gr/grnet/pithos/resources/trashcan_empty.png")

                ImageResource emptyTrash();

                @Source("gr/grnet/pithos/resources/internet.png")

                ImageResource sharing();

                @Source("gr/grnet/pithos/resources/refresh.png")

                ImageResource refresh();

}

        final MenuBar contextMenu = new MenuBar(true);

        /**

         * The widget's constructor.

         *

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

         */

        public FileMenu(GSS _app, final Images _images) {

                setAnimationEnabled(true);

                images = _images;

        final Command downloadCmd = new Command() {

            @Override

            public void execute() {

                preDownloadCheck();

            }

        };

        Folder selectedFolder = _app.getFolderTreeView().getSelection();

        List<File> selectedFiles = _app.getFileList().getSelectedFiles();

        if (selectedFolder != null) {

                    MenuItem newFolderItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.folderNew()).getHTML() + "&nbsp;New Folder</span>", true, new NewFolderCommand(null, selectedFolder, images));

                    addItem(newFolderItem);

//            MenuItem uploadItem = new MenuItem("<span id='topMenu.file.upload'>" + AbstractImagePrototype.create(images.fileUpdate()).getHTML() + "&nbsp;Upload</span>", true, new UploadFileCommand(this, null));

//            addItem(uploadItem);

        }

        if (selectedFiles.size() == 1) {

//            String[] link = {"", ""};

//            createDownloadLink(link, false);

//

//            MenuItem downloadItem = new MenuItem("<span>" + link[0] + AbstractImagePrototype.create(images.download()).getHTML() + "&nbsp;Download" + link[1] + "</span>", true, downloadCmd);

//            addItem(downloadItem);

        }

//        MenuItem emptyTrashItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.emptyTrash()).getHTML() + "&nbsp;Empty Trash</span>", true, new EmptyTrashCommand(this));

//        emptyTrashItem.getElement().setId("topMenu.file.emptyTrash");

//        contextMenu.addItem(emptyTrashItem);

//        MenuItem refreshItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.refresh()).getHTML() + "&nbsp;Refresh</span>", true, new RefreshCommand(this, images));

//        refreshItem.getElement().setId("topMenu.file.refresh");

//        contextMenu.addItem(refreshItem);

//        MenuItem sharingItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.sharing()).getHTML() + "&nbsp;Sharing</span>", true, new PropertiesCommand(this, images, 1));

//        sharingItem.getElement().setId("topMenu.file.sharing");

//        contextMenu.addItem(sharingItem)

//                       .setVisible(propertiesVisible);

//

//        MenuItem propertiesItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.viewText()).getHTML() + "&nbsp;Properties</span>", true, new PropertiesCommand(this, images, 0));

//        propertiesItem.getElement().setId("topMenu.file.properties");

//        contextMenu.addItem(propertiesItem)

//                       .setVisible(propertiesVisible);

        }

        /**

         * Do some validation before downloading a file.

         */

        void preDownloadCheck() {

                Object selection = GSS.get().getCurrentSelection();

                if (selection == null || !(selection instanceof FileResource)) {

                        GSS.get().displayError("You have to select a file first");

                        return;

                }

        }

        /**

         * Create a download link for the respective menu item, if the currently

         * selected object is a file.

         *

         * @param link a String array with two elements that is modified so that the

         *            first position contains the opening tag and the second one the

         *            closing tag

         * @param forceDownload If true, link will be such that browser should ask for filename

         *                                 and save location

         */

        void createDownloadLink(String[] link, boolean forceDownload) {

                String downloadURL = getDownloadURL();

                if (!downloadURL.isEmpty()) {

                        link[0] = "<a class='hidden-link' href='" + downloadURL

                                        + (forceDownload ? "&dl=1" : "") + "' target='_blank'>";

                        link[1] = "</a>";

                }

        }

        public String getDownloadURL() {

                GSS app = GSS.get();

                Object selection = app.getCurrentSelection();

                if (selection != null && selection instanceof FileResource) {

                        FileResource file = (FileResource) selection;

                        return getDownloadURL(file);

                }

                return "";

        }

        public String getDownloadURL(FileResource file) {

                GSS app = GSS.get();

                if (file != null) {

                        return file.getUri();

                }

                return "";

        }

}