Pithos_GSS » GSS

package org.gss_project.gss.admin.client;

import org.gss_project.gss.admin.client.ui.HeaderPanel;

import org.gss_project.gss.admin.client.ui.UserPanel;

import org.gss_project.gss.admin.client.ui.VisualizationPanel;

import org.gss_project.gss.common.dto.SystemStatsDTO;

import com.google.gwt.core.client.EntryPoint;

import com.google.gwt.core.client.GWT;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.event.logical.shared.ResizeEvent;

import com.google.gwt.event.logical.shared.ResizeHandler;

import com.google.gwt.event.logical.shared.SelectionEvent;

import com.google.gwt.event.logical.shared.SelectionHandler;

import com.google.gwt.uibinder.client.UiBinder;

import com.google.gwt.uibinder.client.UiField;

import com.google.gwt.user.client.Command;

import com.google.gwt.user.client.DeferredCommand;

import com.google.gwt.user.client.Window;

import com.google.gwt.user.client.rpc.AsyncCallback;

import com.google.gwt.user.client.ui.Button;

import com.google.gwt.user.client.ui.DialogBox;

import com.google.gwt.user.client.ui.DockLayoutPanel;

import com.google.gwt.user.client.ui.Label;

import com.google.gwt.user.client.ui.RootLayoutPanel;

import com.google.gwt.user.client.ui.TabLayoutPanel;

import com.google.gwt.user.client.ui.VerticalPanel;

/**

 * Entry point classes define <code>onModuleLoad()</code>.

 */

public class TwoAdmin implements EntryPoint {

        interface Binder extends UiBinder<DockLayoutPanel, TwoAdmin> {

        }

        private final AdminServiceAsync adminService = GWT.create(AdminService.class);

        private static final Binder binder = GWT.create(Binder.class);

        /**

         * The single TwoAdmin instance.

         */

        private static TwoAdmin singleton;

        /**

         * Gets the singleton TwoAdmin instance.

         *

         * @return the TwoAdmin object

         */

        public static TwoAdmin get() {

                if (TwoAdmin.singleton == null)

                        TwoAdmin.singleton = new TwoAdmin();

                return TwoAdmin.singleton;

        }

        @UiField(provided = true)

        HeaderPanel headerPanel = new HeaderPanel();

        @UiField UserPanel userPanel;

        @UiField

        TabLayoutPanel tabPanel;

        @UiField VisualizationPanel chart2;

        final DialogBox loadingBox = new DialogBox();

        @Override

        public void onModuleLoad() {

                TwoAdmin.singleton=this;

                loadingBox.setHTML("Loading data");

                //scroll.setAlwaysShowScrollBars(true);

                VerticalPanel vPanel = new VerticalPanel();

                loadingBox.setSize("50%", "50%");

                loadingBox.setWidget(vPanel);

                vPanel.add(new Label("Fetching Requested Data"));

                DockLayoutPanel outer = binder.createAndBindUi(this);

                tabPanel.addSelectionHandler(new SelectionHandler<Integer>() {

                        @Override

                        public void onSelection(SelectionEvent<Integer> event) {

                                switch (event.getSelectedItem()) {

                                        case 0:

                                                loadStatistics();

                                                break;

                                        default:

                                                break;

                                }

                        }

                });

                // Get rid of scrollbars, and clear out the window's built-in margin,

                // because we want to take advantage of the entire client area.

                //Window.enableScrolling(true);

                //Window.setMargin("0px");

                Window.addResizeHandler(new ResizeHandler(){

                        @Override

                        public void onResize(ResizeEvent event) {

                                int height=event.getHeight();

                                resize(height);

                        }

                });

                RootLayoutPanel root = RootLayoutPanel.get();

                root.add(outer);

                // RootPanel.get().add(outer);

                loadStatistics();

                tabPanel.selectTab(0);

                resize(Window.getClientHeight());

        }

        private void resize(int height){

                int newHeight = height - tabPanel.getAbsoluteTop()-100;

                if (newHeight < 1)

                        newHeight = 1;

                tabPanel.setHeight("" + newHeight);

                GWT.log("New Height:"+ newHeight);

        }

        /**

         * Retrieve the adminService.

         *

         * @return the adminService

         */

        public AdminServiceAsync getAdminService() {

                return adminService;

        }

        public void showErrorBox(String message) {

                final DialogBox dialogBox = new DialogBox();

                dialogBox.setHTML("An error occured");

                VerticalPanel vPanel = new VerticalPanel();

                dialogBox.setSize("50%", "50%");

                ClickHandler cancelHandler = new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                dialogBox.hide();

                        }

                };

                dialogBox.setWidget(vPanel);

                vPanel.add(new Label(message));

                Button close = new Button("Close");

                close.addClickHandler(cancelHandler);

                vPanel.add(close);

                dialogBox.center();

                dialogBox.show();

        }

        public void showLoadingBox() {

                loadingBox.center();

                loadingBox.show();

        }

        public void hideLoadingBox(){

                loadingBox.hide();

        }

        public void loadStatistics(){

                DeferredCommand.addCommand(new Command() {

                        @Override

                        public void execute() {

                                showLoadingBox();

                                getAdminService().getSystemStatistics(new AsyncCallback<SystemStatsDTO>() {

                                        @Override

                                        public void onFailure(Throwable caught) {

                                                hideLoadingBox();

                                                // TODO Auto-generated method stub

                                        }

                                        @Override

                                        public void onSuccess(SystemStatsDTO result) {

                                                chart2.updateData(result);

                                                hideLoadingBox();

                                        }});

                        }

                });

        }

        public void searchUsers(String query){

                tabPanel.selectTab(1);

                userPanel.populateTable(query);

        }

}