code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/admin/client/TwoAdmin.java

   1 package gr.ebs.gss.admin.client;
   2
   3 import gr.ebs.gss.admin.client.ui.HeaderPanel;
   4 import gr.ebs.gss.admin.client.ui.UserPanel;
   5 import gr.ebs.gss.admin.client.ui.VisualizationPanel;
   6 import gr.ebs.gss.server.domain.dto.SystemStatsDTO;
   7
   8 import com.google.gwt.core.client.EntryPoint;
   9 import com.google.gwt.core.client.GWT;
  10 import com.google.gwt.event.dom.client.ClickEvent;
  11 import com.google.gwt.event.dom.client.ClickHandler;
  12 import com.google.gwt.event.logical.shared.ResizeEvent;
  13 import com.google.gwt.event.logical.shared.ResizeHandler;
  14 import com.google.gwt.event.logical.shared.SelectionEvent;
  15 import com.google.gwt.event.logical.shared.SelectionHandler;
  16 import com.google.gwt.uibinder.client.UiBinder;
  17 import com.google.gwt.uibinder.client.UiField;
  18 import com.google.gwt.user.client.Command;
  19 import com.google.gwt.user.client.DeferredCommand;
  20 import com.google.gwt.user.client.Window;
  21 import com.google.gwt.user.client.rpc.AsyncCallback;
  22 import com.google.gwt.user.client.ui.Button;
  23 import com.google.gwt.user.client.ui.DialogBox;
  24 import com.google.gwt.user.client.ui.DockLayoutPanel;
  25 import com.google.gwt.user.client.ui.Label;
  26 import com.google.gwt.user.client.ui.RootLayoutPanel;
  27 import com.google.gwt.user.client.ui.TabLayoutPanel;
  28 import com.google.gwt.user.client.ui.VerticalPanel;
  29
  30 /**
  31  * Entry point classes define <code>onModuleLoad()</code>.
  32  */
  33 public class TwoAdmin implements EntryPoint {
  34
  35         interface Binder extends UiBinder<DockLayoutPanel, TwoAdmin> {
  36         }
  37
  38         private final AdminServiceAsync adminService = GWT.create(AdminService.class);
  39
  40         private static final Binder binder = GWT.create(Binder.class);
  41
  42         /**
  43          * The single TwoAdmin instance.
  44          */
  45         private static TwoAdmin singleton;
  46
  47         /**
  48          * Gets the singleton TwoAdmin instance.
  49          *
  50          * @return the TwoAdmin object
  51          */
  52         public static TwoAdmin get() {
  53                 if (TwoAdmin.singleton == null)
  54                         TwoAdmin.singleton = new TwoAdmin();
  55                 return TwoAdmin.singleton;
  56         }
  57
  58         @UiField(provided = true)
  59         HeaderPanel headerPanel = new HeaderPanel();
  60
  61         @UiField UserPanel userPanel;
  62
  63         @UiField
  64         TabLayoutPanel tabPanel;
  65
  66         @UiField VisualizationPanel chart2;
  67
  68         final DialogBox loadingBox = new DialogBox();
  69
  70         @Override
  71         public void onModuleLoad() {
  72                 TwoAdmin.singleton=this;
  73                 loadingBox.setHTML("Loading data");
  74                 //scroll.setAlwaysShowScrollBars(true);
  75                 VerticalPanel vPanel = new VerticalPanel();
  76                 loadingBox.setSize("50%", "50%");
  77                 loadingBox.setWidget(vPanel);
  78                 vPanel.add(new Label("Fetching Requested Data"));
  79
  80                 DockLayoutPanel outer = binder.createAndBindUi(this);
  81                 tabPanel.addSelectionHandler(new SelectionHandler<Integer>() {
  82
  83                         @Override
  84                         public void onSelection(SelectionEvent<Integer> event) {
  85                                 switch (event.getSelectedItem()) {
  86                                         case 0:
  87                                                 loadStatistics();
  88                                                 break;
  89                                         default:
  90                                                 break;
  91                                 }
  92
  93                         }
  94                 });
  95
  96
  97                 // Get rid of scrollbars, and clear out the window's built-in margin,
  98                 // because we want to take advantage of the entire client area.
  99                 //Window.enableScrolling(true);
 100                 //Window.setMargin("0px");
 101                 Window.addResizeHandler(new ResizeHandler(){
 102
 103                         @Override
 104                         public void onResize(ResizeEvent event) {
 105                                 int height=event.getHeight();
 106                                 resize(height);
 107
 108                         }
 109
 110                 });
 111                 RootLayoutPanel root = RootLayoutPanel.get();
 112                 root.add(outer);
 113                 // RootPanel.get().add(outer);
 114                 loadStatistics();
 115                 tabPanel.selectTab(0);
 116
 117                 resize(Window.getClientHeight());
 118         }
 119
 120         private void resize(int height){
 121
 122                 int newHeight = height - tabPanel.getAbsoluteTop()-100;
 123                 if (newHeight < 1)
 124                         newHeight = 1;
 125                 tabPanel.setHeight("" + newHeight);
 126                 GWT.log("New Height:"+ newHeight);
 127         }
 128         /**
 129          * Retrieve the adminService.
 130          *
 131          * @return the adminService
 132          */
 133         public AdminServiceAsync getAdminService() {
 134                 return adminService;
 135         }
 136
 137         public void showErrorBox(String message) {
 138                 final DialogBox dialogBox = new DialogBox();
 139                 dialogBox.setHTML("An error occured");
 140                 VerticalPanel vPanel = new VerticalPanel();
 141                 dialogBox.setSize("50%", "50%");
 142                 ClickHandler cancelHandler = new ClickHandler() {
 143
 144                         @Override
 145                         public void onClick(ClickEvent event) {
 146                                 dialogBox.hide();
 147                         }
 148                 };
 149                 dialogBox.setWidget(vPanel);
 150                 vPanel.add(new Label(message));
 151                 Button close = new Button("Close");
 152                 close.addClickHandler(cancelHandler);
 153                 vPanel.add(close);
 154                 dialogBox.center();
 155                 dialogBox.show();
 156         }
 157
 158
 159
 160         public void showLoadingBox() {
 161                 loadingBox.center();
 162                 loadingBox.show();
 163         }
 164
 165         public void hideLoadingBox(){
 166                 loadingBox.hide();
 167         }
 168
 169
 170         public void loadStatistics(){
 171                 DeferredCommand.addCommand(new Command() {
 172
 173                         @Override
 174                         public void execute() {
 175                                 showLoadingBox();
 176                                 getAdminService().getSystemStatistics(new AsyncCallback<SystemStatsDTO>() {
 177
 178                                         @Override
 179                                         public void onFailure(Throwable caught) {
 180                                                 hideLoadingBox();
 181                                                 // TODO Auto-generated method stub
 182
 183                                         }
 184
 185                                         @Override
 186                                         public void onSuccess(SystemStatsDTO result) {
 187                                                 chart2.updateData(result);
 188                                                 hideLoadingBox();
 189                                         }});
 190
 191                         }
 192                 });
 193         }
 194
 195         public void searchUsers(String query){
 196                 tabPanel.selectTab(1);
 197                 userPanel.populateTable(query);
 198         }
 199 }