org.pepstock.jem.gwt.client.panels.administration.certificates.CertificateAdder.java Source code

Introduction

Here is the source code for org.pepstock.jem.gwt.client.panels.administration.certificates.CertificateAdder.java

Source

/**
JEM, the BEE - Job Entry Manager, the Batch Execution Environment
Copyright (C) 2012-2015   Andrea "Stock" Stocchero
This program 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
any later version.
    
This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package org.pepstock.jem.gwt.client.panels.administration.certificates;

import org.pepstock.jem.gwt.client.Sizes;
import org.pepstock.jem.gwt.client.commons.Toast;
import org.pepstock.jem.gwt.client.commons.XmlResultViewer;
import org.pepstock.jem.gwt.client.panels.administration.certificates.adder.Actions;
import org.pepstock.jem.log.MessageLevel;

import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.user.client.ui.DockLayoutPanel;
import com.google.gwt.user.client.ui.FileUpload;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.FormPanel;
import com.google.gwt.user.client.ui.FormPanel.SubmitCompleteEvent;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 * Component which implements the HTML form to upload a certificate
 * 
 * @author Andrea "Stock" Stocchero
 * @version 1.4
 *
 */
public class CertificateAdder extends PopupPanel {

    //create a FormPanel 
    final FormPanel form = new FormPanel();

    //create a file upload widget
    final FileUpload fileUpload = new FileUpload();

    final TextBox user = new TextBox();

    /**
     * GWT RPC service name to call in form action
     */
    public static final String SERVICE_NAME = "certificateAdder";

    /**
     * Form field name for certificate file
     */
    public static final String FILE_UPLOAD_FIELD = "certificate";

    /**
     * Form field name for alias (is the user id)
     */
    public static final String ALIAS_FIELD = "user";

    /**
     * Construct the UI with form to submit to upload the certificate.
     */
    public CertificateAdder() {

        super(true, true);
        setGlassEnabled(true);

        // creates sub component
        DockLayoutPanel mainContainer = new DockLayoutPanel(Unit.PX);

        // adds header 
        // use the 
        mainContainer.addNorth(new CertificateHeader(this), Sizes.INSPECTOR_HEADER_HEIGHT_PX);

        VerticalPanel panel = new VerticalPanel();
        //pass action to the form to point to service handling file 
        //receiving operation.
        form.setAction(GWT.getModuleBaseURL() + SERVICE_NAME);
        // set form to use the POST method, and multipart MIME encoding.
        form.setEncoding(FormPanel.ENCODING_MULTIPART);
        form.setMethod(FormPanel.METHOD_POST);

        fileUpload.setName(FILE_UPLOAD_FIELD);
        user.setName(ALIAS_FIELD);

        FlexTable layout = new FlexTable();
        layout.setCellPadding(5);
        layout.setWidth(Sizes.HUNDRED_PERCENT);

        layout.setHTML(0, 0, "Type user ID:");
        layout.setWidget(0, 1, user);

        layout.setHTML(1, 0, "Select certificate file for user:");
        layout.setWidget(1, 1, fileUpload);

        //add a label
        panel.add(layout);

        form.addSubmitCompleteHandler(new FormPanel.SubmitCompleteHandler() {
            @Override
            public void onSubmitComplete(SubmitCompleteEvent event) {
                // success, shows toast!
                XmlResultViewer.showResult("Certificate added", event.getResults());
                close();
            }
        });

        panel.setSpacing(10);

        // adds ActionsButtonPanel to south
        Actions actions = new Actions(this);
        panel.add(actions);

        // Add form to the root panel.      
        form.add(panel);

        mainContainer.add(form);
        setWidget(mainContainer);
    }

    /**
     * Submit the form, uploading the file
     */
    public void submit() {
        //get the filename to be uploaded
        String filename = fileUpload.getFilename();
        if (filename.length() == 0) {
            new Toast(MessageLevel.ERROR,
                    "No file has been specified! Please select a file which represents a job!", "File error!")
                            .show();
        } else {
            //submit the form
            form.submit();
        }
    }

    /**
     * Close the popup panel
     */
    public void close() {
        hide();
    }
}