org.drools.brms.client.admin.BackupManager.java Source code

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Here is the source code for org.drools.brms.client.admin.BackupManager.java

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package org.drools.brms.client.admin;
/*
 * Copyright 2005 JBoss Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import org.drools.brms.client.common.ErrorPopup;
import org.drools.brms.client.common.FormStyleLayout;
import org.drools.brms.client.common.HTMLFileManagerFields;
import org.drools.brms.client.common.ImageButton;
import org.drools.brms.client.common.LoadingPopup;

import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FileUpload;
import com.google.gwt.user.client.ui.FormHandler;
import com.google.gwt.user.client.ui.FormPanel;
import com.google.gwt.user.client.ui.FormSubmitCompleteEvent;
import com.google.gwt.user.client.ui.FormSubmitEvent;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;

/**
 *
 * @author Fernando Meyer
 */
public class BackupManager extends Composite {

    public BackupManager() {

        FormStyleLayout widtab = new FormStyleLayout("images/backup_large.png", "Import/Export");

        widtab.addAttribute("", new HTML("<i>Import and Export rules repository</i>"));
        widtab.addRow(new HTML("<hr/>"));
        widtab.addAttribute("Import from an xml file", newImportWidget());
        widtab.addAttribute("Export to a zip file", newExportWidget());
        widtab.addRow(new HTML("<hr/>"));
        //        widtab.addAttribute( "Delete rules repository",
        //                             cleanRepository() );

        initWidget(widtab);

    }

    private Widget newExportWidget() {
        HorizontalPanel horiz = new HorizontalPanel();

        Button create = new Button("Export");
        create.addClickListener(new ClickListener() {
            public void onClick(Widget w) {
                exportRepository();
            }
        });

        horiz.add(create);
        return horiz;
    }

    //    private Widget cleanRepository() {
    //        HorizontalPanel horiz = new HorizontalPanel();
    //
    //        Button delete = new Button( "Execute" );
    //        delete.addClickListener( new ClickListener() {
    //            public void onClick(Widget w) {
    //                if ( Window.confirm( "Are you REALLY REALLY sure you want to erase you repository contents?" ) ) {
    //                    RepositoryServiceFactory.getService().clearRulesRepository( new GenericCallback() {
    //                        public void onSuccess(Object data) {
    //                            Window.alert( "Rules repository deleted." );
    //                        }
    //                    });
    //                } else {
    //                    Window.alert( "Operation cancelled" );
    //                }
    //            }
    //        } );
    //
    //        horiz.add( delete );
    //        return horiz;
    //    }

    private Widget newImportWidget() {

        final FormPanel uploadFormPanel = new FormPanel();
        uploadFormPanel.setAction(GWT.getModuleBaseURL() + "backup");
        uploadFormPanel.setEncoding(FormPanel.ENCODING_MULTIPART);
        uploadFormPanel.setMethod(FormPanel.METHOD_POST);

        HorizontalPanel panel = new HorizontalPanel();
        uploadFormPanel.setWidget(panel);

        final FileUpload upload = new FileUpload();
        upload.setName(HTMLFileManagerFields.FILE_UPLOAD_FIELD_NAME_IMPORT);
        panel.add(upload);

        panel.add(new Label("import:"));
        ImageButton ok = new ImageButton("images/upload.gif");
        ok.addClickListener(new ClickListener() {
            public void onClick(Widget sender) {
                doImportFile(uploadFormPanel);
            }

            private void doImportFile(final FormPanel uploadFormPanel) {
                if (Window.confirm("Are you sure you want to import? this will erase any content in the "
                        + "repository currently?")) {
                    LoadingPopup.showMessage("Importing repository, please wait, as this could take some time...");
                    uploadFormPanel.submit();
                }
            }
        });

        panel.add(ok);

        uploadFormPanel.addFormHandler(new FormHandler() {
            public void onSubmitComplete(FormSubmitCompleteEvent event) {
                if (event.getResults().indexOf("OK") > -1) {
                    Window.alert(
                            "Rules repository imported successfully. Please refresh your browser (F5) to show the new content. ");
                } else {
                    ErrorPopup.showMessage(
                            "Unable to import into the repository. Consult the server logs for error messages.");
                }
                LoadingPopup.close();
            }

            public void onSubmit(FormSubmitEvent event) {
                if (upload.getFilename().length() == 0) {
                    Window.alert("You did not specify an exported repository filename !");
                    event.setCancelled(true);
                } else if (!upload.getFilename().endsWith(".xml")) {
                    Window.alert("Please specify a valid repository xml file.");
                    event.setCancelled(true);
                }

            }
        });

        return uploadFormPanel;
    }

    private void exportRepository() {

        LoadingPopup.showMessage("Exporting repository, please wait, as this could take some time...");

        Window.open(GWT.getModuleBaseURL() + "backup?" + HTMLFileManagerFields.FORM_FIELD_REPOSITORY + "=true",
                "downloading", "resizable=no,scrollbars=yes,status=no");

        LoadingPopup.close();
    }

}