code.grnet.gr Git - pithos/blob - web_client/src/gr/grnet/pithos/web/client/StatusPanel.java

   1 /*
   2  * Copyright (c) 2011 Greek Research and Technology Network
   3  */
   4 package gr.grnet.pithos.web.client;
   5
   6 import gr.grnet.pithos.web.client.rest.GetCommand;
   7 import gr.grnet.pithos.web.client.rest.RestException;
   8 import gr.grnet.pithos.web.client.rest.resource.QuotaHolder;
   9 import gr.grnet.pithos.web.client.rest.resource.UserResource;
  10
  11 import com.google.gwt.core.client.GWT;
  12 import com.google.gwt.i18n.client.DateTimeFormat;
  13 import com.google.gwt.resources.client.ClientBundle;
  14 import com.google.gwt.resources.client.ImageResource;
  15 import com.google.gwt.user.client.DeferredCommand;
  16 import com.google.gwt.user.client.IncrementalCommand;
  17 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  18 import com.google.gwt.user.client.ui.Composite;
  19 import com.google.gwt.user.client.ui.HTML;
  20 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  21 import com.google.gwt.user.client.ui.HorizontalPanel;
  22
  23 /**
  24  * The panel that displays a status bar with quota information.
  25  */
  26 public class StatusPanel extends Composite {
  27         public static final boolean DONE = false;
  28         private HTML fileCountLabel = new HTML("");
  29         private HTML fileSizeLabel = new HTML("");
  30         private HTML quotaIcon = new HTML("");
  31         private HTML quotaLabel = new HTML("");
  32         private HTML lastLoginLabel = new HTML("");
  33         private HTML currentLoginLabel = new HTML("");
  34         private HTML currentlyShowingLabel = new HTML("");
  35
  36         /**
  37          * An image bundle for this widget's images.
  38          */
  39         public interface Images extends ClientBundle {
  40
  41                 @Source("gr/grnet/pithos/resources/windowlist.png")
  42                 ImageResource totalFiles();
  43
  44                 @Source("gr/grnet/pithos/resources/database.png")
  45                 ImageResource totalSize();
  46
  47                 @Source("gr/grnet/pithos/resources/redled.png")
  48                 ImageResource redSize();
  49
  50                 @Source("gr/grnet/pithos/resources/greenled.png")
  51                 ImageResource greenSize();
  52
  53                 @Source("gr/grnet/pithos/resources/yellowled.png")
  54                 ImageResource yellowSize();
  55
  56                 @Source("gr/grnet/pithos/resources/xclock.png")
  57                 ImageResource lastLogin();
  58         }
  59
  60         private final Images images;
  61
  62         /**
  63          * The constructor of the status panel.
  64          *
  65          * @param theImages the supplied images
  66          */
  67         public StatusPanel(Images theImages) {
  68                 images = theImages;
  69                 HorizontalPanel outer = new HorizontalPanel();
  70                 outer.setWidth("100%");
  71                 outer.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_LEFT);
  72
  73                 HorizontalPanel left = new HorizontalPanel();
  74                 left.setSpacing(8);
  75                 HorizontalPanel middle = new HorizontalPanel();
  76                 middle.setSpacing(8);
  77                 HorizontalPanel right = new HorizontalPanel();
  78                 right.setSpacing(8);
  79                 outer.add(left);
  80                 outer.add(middle);
  81                 outer.add(right);
  82                 left.add(new HTML("<b>Totals:</b> "));
  83                 left.add(AbstractImagePrototype.create(images.totalFiles()).createImage());
  84                 left.add(fileCountLabel);
  85                 left.add(AbstractImagePrototype.create(images.totalSize()).createImage());
  86                 left.add(fileSizeLabel);
  87                 quotaIcon.setHTML(AbstractImagePrototype.create(images.greenSize()).getHTML());
  88                 left.add(quotaIcon);
  89                 left.add(quotaLabel);
  90                 middle.add(AbstractImagePrototype.create(images.lastLogin()).createImage());
  91                 middle.add(new HTML("<b>Last login:</b> "));
  92                 middle.add(lastLoginLabel);
  93                 middle.add(new HTML("<b>\u0387 Current session login:</b> "));
  94                 middle.add(currentLoginLabel);
  95                 right.add(currentlyShowingLabel);
  96                 outer.setStyleName("statusbar-inner");
  97                 left.setStyleName("statusbar-inner");
  98                 middle.setStyleName("statusbar-inner");
  99                 right.setStyleName("statusbar-inner");
 100                 outer.setCellHorizontalAlignment(right, HasHorizontalAlignment.ALIGN_RIGHT);
 101
 102                 initWidget(outer);
 103
 104                 // Initialize and display the quota information.
 105                 DeferredCommand.addCommand(new IncrementalCommand() {
 106                         @Override
 107                         public boolean execute() {
 108                                 GSS app = GSS.get();
 109                                 UserResource user = app.getCurrentUserResource();
 110                                 if (user == null || app.getTreeView().getMyFolders() == null)
 111                                         return !DONE;
 112                                 displayStats(user);
 113                                 return DONE;
 114                         }
 115                 });
 116         }
 117
 118         /**
 119          * Refresh the widget with the provided statistics.
 120          */
 121         private void displayStats(UserResource user) {
 122                 QuotaHolder stats = user.getQuota();
 123                 if (stats.getFileCount() == 1)
 124                         fileCountLabel.setHTML("1 file");
 125                 else
 126                         fileCountLabel.setHTML(stats.getFileCount() + " files");
 127                 fileSizeLabel.setHTML(stats.getFileSizeAsString() + " used");
 128                 long pc = stats.percentOfFreeSpace();
 129                 if(pc<10) {
 130                         quotaIcon.setHTML(AbstractImagePrototype.create(images.redSize()).getHTML());
 131                         quotaLabel.setHTML(stats.getQuotaLeftAsString() +" free");
 132                 } else if(pc<20) {
 133                         quotaIcon.setHTML(AbstractImagePrototype.create(images.yellowSize()).getHTML());
 134                         quotaLabel.setHTML(stats.getQuotaLeftAsString() +" free");
 135                 } else {
 136                         quotaIcon.setHTML(AbstractImagePrototype.create(images.greenSize()).getHTML());
 137                         quotaLabel.setHTML(stats.getQuotaLeftAsString() +" free");
 138                 }
 139                 final DateTimeFormat formatter = DateTimeFormat.getFormat("d/M/yyyy h:mm a");
 140                 lastLoginLabel.setHTML(formatter.format(user.getLastLogin()));
 141                 currentLoginLabel.setHTML(formatter.format(user.getCurrentLogin()));
 142         }
 143
 144         /**
 145          * Requests updated quota information from the server and refreshes
 146          * the display.
 147          */
 148         public void updateStats() {
 149                 final GSS app = GSS.get();
 150                 UserResource user = app.getCurrentUserResource();
 151                 GetCommand<UserResource> uc = new GetCommand<UserResource>(UserResource.class, user.getUri(), null){
 152                         @Override
 153                         public void onComplete() {
 154                                 displayStats(getResult());
 155                         }
 156
 157                         @Override
 158                         public void onError(Throwable t) {
 159                                 if(t instanceof RestException)
 160                                         app.displayError("Unable to fetch quota:" +
 161                                                                 ((RestException)t).getHttpStatusText());
 162                                 else
 163                                         app.displayError("System error fetching quota:" +
 164                                                                 t.getMessage());
 165                                 GWT.log("ERR", t);
 166                         }
 167                 };
 168                 DeferredCommand.addCommand(uc);
 169         }
 170
 171         /**
 172          * Displays the statistics for the current folder.
 173          *
 174          * @param text the statistics to display
 175          */
 176         public void updateCurrentlyShowing(String text) {
 177                 if (text == null)
 178                         currentlyShowingLabel.setText("");
 179                 else
 180                         currentlyShowingLabel.setHTML(" <b>Showing:</b> " + text);
 181         }
 182
 183 }