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root / src / gr / grnet / pithos / web / client / commands / ToTrashCommand.java @ 5f91f72d

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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.commands;
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import gr.grnet.pithos.web.client.Pithos;
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import gr.grnet.pithos.web.client.foldertree.File;
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import gr.grnet.pithos.web.client.foldertree.Folder;
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import gr.grnet.pithos.web.client.foldertree.Resource;
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import gr.grnet.pithos.web.client.rest.DeleteRequest;
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import gr.grnet.pithos.web.client.rest.GetRequest;
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import gr.grnet.pithos.web.client.rest.PutRequest;
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import gr.grnet.pithos.web.client.rest.RestException;
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import java.util.Iterator;
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import java.util.List;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.core.client.Scheduler;
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import com.google.gwt.http.client.Response;
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import com.google.gwt.http.client.URL;
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import com.google.gwt.user.client.Command;
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import com.google.gwt.user.client.ui.PopupPanel;
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/**
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 *
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 * Move file or folder to trash.
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 *
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 *
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 */
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public class ToTrashCommand implements Command{
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        private PopupPanel containerPanel;
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        protected Pithos app;
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        protected Object resource;
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        public ToTrashCommand(Pithos _app, PopupPanel _containerPanel, Object _resource){
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                containerPanel = _containerPanel;
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        app = _app;
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        resource = _resource;
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        }
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        @Override
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        public void execute() {
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        if (containerPanel != null)
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                    containerPanel.hide();
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        if (resource instanceof List) {
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            @SuppressWarnings("unchecked")
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                        Iterator<File> iter = ((List<File>) resource).iterator();
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            trashFiles(iter, new Command() {
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                @SuppressWarnings("unchecked")
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                                @Override
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                public void execute() {
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                    app.updateFolder(((List<File>) resource).get(0).getParent(), true, new Command() {
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                                                @Override
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                                                public void execute() {
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                                                        app.updateTrash(false, null);
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                                                }
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                                        });
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                }
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            });
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        }
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        else if (resource instanceof Folder) {
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            final Folder toBeTrashed = (Folder) resource;
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            trashFolder(toBeTrashed, new Command() {
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                @Override
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                public void execute() {
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                    app.updateFolder(toBeTrashed.getParent(), true, new Command() {
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                                                @Override
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                                                public void execute() {
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                                                        app.updateTrash(false, null);
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                                                }
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                                        });
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                }
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            });
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        }
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        }
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    private void trashFolder(final Folder f, final Command callback) {
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        String path = "/" + Pithos.TRASH_CONTAINER + "/" + f.getPrefix();
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        PutRequest createFolder = new PutRequest(app.getApiPath(), app.getUsername(), path) {
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            @Override
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            public void onSuccess(Resource result) {
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                    GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
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                                        @Override
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                                        public void onSuccess(final Folder _f) {
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                                            Iterator<File> iter = _f.getFiles().iterator();
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                                            trashFiles(iter, new Command() {
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                                                @Override
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                                                public void execute() {
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                                                    Iterator<Folder> iterf = _f.getSubfolders().iterator();
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                                                    trashSubfolders(iterf, new Command() {
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                                                                        @Override
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                                                                        public void execute() {
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                                                                                DeleteRequest deleteFolder = new DeleteRequest(app.getApiPath(), _f.getOwner(), URL.encode(_f.getUri())) {
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                                                                                        @Override
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                                                                                        public void onSuccess(Resource _result) {
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                                                                                                if (callback != null)
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                                                                                                        callback.execute();
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                                                                                        }
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                                                                                        @Override
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                                                                                        public void onError(Throwable t) {
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                                                                            GWT.log("", t);
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                                                                                                app.setError(t);
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                                                                            if (t instanceof RestException) {
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                                                                                    if (((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND)
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                                                                                            onSuccess(null);
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                                                                                    else
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                                                                                            app.displayError("Unable to delete folder: " + ((RestException) t).getHttpStatusText());
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                                                                            }
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                                                                            else
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                                                                                app.displayError("System error unable to delete folder: "+t.getMessage());
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                                                                                        }
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                                                                                        @Override
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                                                                                        protected void onUnauthorized(Response response) {
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                                                                                                app.sessionExpired();
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                                                                                        }
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                                                                                };
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                                                                                deleteFolder.setHeader("X-Auth-Token", app.getToken());
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                                                                                Scheduler.get().scheduleDeferred(deleteFolder);
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                                                                        }
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                                                                });
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                                                }
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                                            });
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                                        }
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                                        @Override
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                                        public void onError(Throwable t) {
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                                GWT.log("", t);
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                                                app.setError(t);
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                                if (t instanceof RestException) {
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                                    app.displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
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                                }
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                                else
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                                    app.displayError("System error getting folder: " + t.getMessage());
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                                        }
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                                        @Override
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                                        protected void onUnauthorized(Response response) {
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                                                app.sessionExpired();
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                                        }
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                                };
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                                getFolder.setHeader("X-Auth-Token", app.getToken());
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                                Scheduler.get().scheduleDeferred(getFolder);
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            }
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            @Override
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            public void onError(Throwable t) {
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                GWT.log("", t);
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                                app.setError(t);
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                if (t instanceof RestException) {
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                    app.displayError("Unable to create folder:" + ((RestException) t).getHttpStatusText());
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                }
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                else
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                    app.displayError("System error creating folder:" + t.getMessage());
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            }
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                        @Override
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                        protected void onUnauthorized(Response response) {
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                                app.sessionExpired();
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                        }
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        };
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        createFolder.setHeader("X-Auth-Token", app.getToken());
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        createFolder.setHeader("Accept", "*/*");
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        createFolder.setHeader("Content-Length", "0");
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        createFolder.setHeader("Content-Type", "application/folder");
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        Scheduler.get().scheduleDeferred(createFolder);
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    }
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    protected void trashFiles(final Iterator<File> iter, final Command callback) {
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        if (iter.hasNext()) {
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            File file = iter.next();
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            String path = "/" + Pithos.TRASH_CONTAINER + "/" + file.getPath();
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            PutRequest trashFile = new PutRequest(app.getApiPath(), app.getUsername(), path) {
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                @Override
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                public void onSuccess(Resource result) {
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                    trashFiles(iter, callback);
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                }
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                @Override
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                public void onError(Throwable t) {
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                    GWT.log("", t);
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                                        app.setError(t);
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                    if (t instanceof RestException) {
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                        app.displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
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                    }
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                    else
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                        app.displayError("System error unable to copy file: "+t.getMessage());
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                }
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                                @Override
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                                protected void onUnauthorized(Response response) {
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                                        app.sessionExpired();
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                                }
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            };
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            trashFile.setHeader("X-Auth-Token", app.getToken());
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            trashFile.setHeader("X-Move-From", URL.encodePathSegment(file.getUri()));
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            Scheduler.get().scheduleDeferred(trashFile);
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        }
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        else if (callback != null) {
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            callback.execute();
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        }
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    }
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    protected void trashSubfolders(final Iterator<Folder> iter, final Command callback) {
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        if (iter.hasNext()) {
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            final Folder f = iter.next();
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            trashFolder(f, new Command() {
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                                @Override
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                                public void execute() {
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                                        trashSubfolders(iter, callback);
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                                }
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                        });
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        }
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        else  {
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                app.updateTrash(false, callback);
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        }
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    }
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}