Synnefo » Pithos Web Client

/*

 * Copyright 2011-2012 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.foldertree.File;

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

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

import gr.grnet.pithos.web.client.rest.GetRequest;

import gr.grnet.pithos.web.client.rest.RestException;

import java.util.List;

import com.google.gwt.core.client.GWT;

import com.google.gwt.core.client.Scheduler;

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

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

import com.google.gwt.http.client.Response;

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

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

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

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

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

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

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

/**

 * The 'File properties' dialog box implementation.

 *

 */

public class FileVersionsDialog extends AbstractPropertiesDialog {

        /**

         * An image bundle for this widgets images.

         */

        public interface Images extends MessagePanel.Images {

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

                ImageResource permUser();

                @Source("gr/grnet/pithos/resources/groups22.png")

                ImageResource permGroup();

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

                ImageResource delete();

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

                ImageResource restore();

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

                ImageResource download();

        }

        final File file;

    Images images = GWT.create(Images.class);

        /**

         * The widget's constructor.

         */

        public FileVersionsDialog(Pithos _app, File _file) {

        super(_app);

        file = _file;

                Anchor close = new Anchor("close");

                close.addStyleName("close");

                close.addClickHandler(new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                hide();

                        }

                });

                // Set the dialog's caption.

                setText("File versions");

                setGlassEnabled(true);

                setStyleName("pithos-DialogBox");

                // Outer contains inner and buttons.

                final VerticalPanel outer = new VerticalPanel();

                outer.add(close);

                final FocusPanel focusPanel = new FocusPanel(outer);

                // Inner contains generalPanel and permPanel.

                inner = new VerticalPanel();

                inner.addStyleName("inner");

                outer.add(inner);

                // Create the 'OK' button, along with a listener that hides the dialog

                // when the button is clicked.

                final Button ok = new Button("OK", new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                accept();

                                closeDialog();

                        }

                });

                ok.addStyleName("button");

        outer.add(ok);

        outer.setCellHorizontalAlignment(inner, HasHorizontalAlignment.ALIGN_CENTER);

        focusPanel.setFocus(true);

        setWidget(outer);

        }

        void doCenter() {

                super.center();

        }

        @Override

        public void center() {

                fetchVersions();

        }

    protected void fetchVersions() {

            String path = file.getUri() + "?format=json&version=list";

            GetRequest<FileVersions> getVersions = new GetRequest<FileVersions>(FileVersions.class, app.getApiPath(), file.getOwner(), path) {

                        @Override

                        public void onSuccess(FileVersions _result) {

                        inner.add(createVersionPanel(_result.getVersions()));

                                doCenter();

                        }

                        @Override

                        public void onError(Throwable t) {

                                GWT.log("", t);

                                app.setError(t);

                if (t instanceof RestException) {

                    app.displayError("Unable to fetch versions: " + ((RestException) t).getHttpStatusText());

                }

                else

                    app.displayError("System error unable to fetch versions: "+t.getMessage());

                        }

                        @Override

                        protected void onUnauthorized(Response response) {

                                app.sessionExpired();

                        }

                };

                getVersions.setHeader("X-Auth-Token", app.getUserToken());

                Scheduler.get().scheduleDeferred(getVersions);

        }

    VerticalPanel createVersionPanel(List<Version> versions) {

        VerticalPanel versionPanel = new VerticalPanel();

        VersionsList verList = new VersionsList(app, this, images, file, versions);

        versionPanel.add(verList);

        return versionPanel;

    }

        /**

         * Accepts any change and updates the file

         * @return 

         *

         */

        @Override

        protected boolean accept() {

        app.updateFolder(file.getParent(), true, new Command() {

                        @Override

                        public void execute() {

                                if (file.isSharedOrPublished())

                                        app.updateMySharedRoot();

                        }

                }, true);

        return true;

        }

}