org.gss_project.gss.web.client.rest.DeleteCommand.java Source code

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Here is the source code for org.gss_project.gss.web.client.rest.DeleteCommand.java

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/*
 * Copyright 2009 Electronic Business Systems Ltd.
 *
 * This file is part of GSS.
 *
 * GSS is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * GSS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.gss_project.gss.web.client.rest;

import org.gss_project.gss.web.client.GSS;
import org.gss_project.gss.common.exceptions.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;

/**
 * @author kman
 *
 */
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())
            GSS.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())
                GSS.get().hideLoadingIndicator();
            return false;
        }
        return true;
    }

}