Synnefo

/*

 * 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.commands;

import gr.grnet.pithos.web.client.FileMenu.Images;

import gr.grnet.pithos.web.client.FolderPropertiesDialog;

import gr.grnet.pithos.web.client.GSS;

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

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

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

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

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

import java.util.ArrayList;

import java.util.List;

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

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

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

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

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

/**

 * Display the 'new folder' dialog for creating a new folder.

 *

 */

public class NewFolderCommand implements Command{

        private PopupPanel containerPanel;

        final Images images;

        private List<GroupResource> groups = null;

        /**

         * @param aContainerPanel

         * @param newImages the images of the new folder dialog

         */

        public NewFolderCommand(PopupPanel aContainerPanel, final Images newImages){

                containerPanel = aContainerPanel;

                images=newImages;

        }

        @Override

        public void execute() {

                containerPanel.hide();

                getGroups();

                DeferredCommand.addCommand(new IncrementalCommand() {

                        @Override

                        public boolean execute() {

                                boolean res = canContinue();

                                if (res) {

                                        displayNewFolder();

                                        return false;

                                }

                                return true;

                        }

                });

        }

        private boolean canContinue() {

                if (groups == null)

                        return false;

                return true;

        }

        void displayNewFolder() {

                RestResource currentFolder = GSS.get().getTreeView().getSelection();

                if (currentFolder == null) {

                        GSS.get().displayError("You have to select the parent folder first");

                        return;

                }

                FolderPropertiesDialog dlg = new FolderPropertiesDialog(images, true,  groups);

                dlg.center();

        }

        private void getGroups() {

                GetCommand<GroupsResource> gg = new GetCommand<GroupsResource>(GroupsResource.class, GSS.get().getCurrentUserResource().getGroupsPath(), null){

                        @Override

                        public void onComplete() {

                                GroupsResource res = getResult();

                                MultipleGetCommand<GroupResource> ga = new MultipleGetCommand<GroupResource>(GroupResource.class, res.getGroupPaths().toArray(new String[]{}), null){

                                        @Override

                                        public void onComplete() {

                                                List<GroupResource> groupList = getResult();

                                                groups = groupList;

                                        }

                                        @Override

                                        public void onError(Throwable t) {

                                                GWT.log("", t);

                                                GSS.get().displayError("Unable to fetch groups");

                                                groups = new ArrayList<GroupResource>();

                                        }

                                        @Override

                                        public void onError(String p, Throwable throwable) {

                                                GWT.log("Path:"+p, throwable);

                                        }

                                };

                                DeferredCommand.addCommand(ga);

                        }

                        @Override

                        public void onError(Throwable t) {

                                GWT.log("", t);

                                GSS.get().displayError("Unable to fetch groups");

                                groups = new ArrayList<GroupResource>();

                        }

                };

                DeferredCommand.addCommand(gg);

        }

}