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.rest;

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

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

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

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

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

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

public abstract class DeleteCommand extends RestCommand{

        boolean complete = false;

        public DeleteCommand(String pathToDelete){

                this(pathToDelete, true);

        }

        public DeleteCommand(String pathToDelete, boolean showLoading){

                setShowLoadingIndicator(showLoading);

                if(isShowLoadingIndicator())

                        Pithos.get().showLoadingIndicator("Deleting ",pathToDelete);

                final String path;

                if(pathToDelete.endsWith("/"))

                        path = pathToDelete;

                else

                        path = pathToDelete+"/";

                RequestBuilder builder = new RequestBuilder(RequestBuilder.DELETE, path);

                try {

                        handleHeaders(builder, path);

                        builder.sendRequest("", new RequestCallback() {

                                @Override

                                public void onError(Request arg0, Throwable arg1) {

                                        complete = true;

                                        DeleteCommand.this.onError(arg1);

                                }

                                @Override

                                public void onResponseReceived(Request arg0, Response arg1) {

                                        complete=true;

                                        if(arg1.getStatusCode() == 204)

                                                onComplete();

                                        else if(arg1.getStatusCode() == 403)

                                                sessionExpired();

                                        else if(arg1.getStatusCode() == 405)

                                                DeleteCommand.this.onError(new InsufficientPermissionsException("You don't have permissions to delete this resource"));

                                        else

                                                DeleteCommand.this.onError(new RestException(path, arg1.getStatusCode(), arg1.getStatusText(), arg1.getText()));

                                }

                        });

                } catch (Exception ex) {

                        complete=true;

                        onError(ex);

                }

        }

        public boolean isComplete() {

                return complete;

        }

        @Override

        public boolean execute() {

                boolean com = isComplete();

                if(com){

                        if(isShowLoadingIndicator())

                                Pithos.get().hideLoadingIndicator();

                        return false;

                }

                return true;

        }

}