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

   1 /*\r
   2  * Copyright 2007, 2008, 2009 Electronic Business Systems Ltd.\r
   3  *\r
   4  * This file is part of GSS.\r
   5  *\r
   6  * GSS is free software: you can redistribute it and/or modify\r
   7  * it under the terms of the GNU General Public License as published by\r
   8  * the Free Software Foundation, either version 3 of the License, or\r
   9  * (at your option) any later version.\r
  10  *\r
  11  * GSS is distributed in the hope that it will be useful,\r
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14  * GNU General Public License for more details.\r
  15  *\r
  16  * You should have received a copy of the GNU General Public License\r
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.\r
  18  */\r
  19 package gr.ebs.gss.client;\r
  20 \r
  21 import gr.ebs.gss.client.rest.GetCommand;\r
  22 import gr.ebs.gss.client.rest.RestException;\r
  23 import gr.ebs.gss.client.rest.resource.QuotaHolder;\r
  24 import gr.ebs.gss.client.rest.resource.UserResource;\r
  25 \r
  26 import com.google.gwt.core.client.GWT;\r
  27 import com.google.gwt.i18n.client.DateTimeFormat;\r
  28 import com.google.gwt.resources.client.ClientBundle;\r
  29 import com.google.gwt.resources.client.ImageResource;\r
  30 import com.google.gwt.user.client.DeferredCommand;\r
  31 import com.google.gwt.user.client.IncrementalCommand;\r
  32 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  33 import com.google.gwt.user.client.ui.Composite;\r
  34 import com.google.gwt.user.client.ui.HTML;\r
  35 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  36 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  37 \r
  38 /**\r
  39  * The panel that displays a status bar with quota information.\r
  40  */\r
  41 public class StatusPanel extends Composite {\r
  42         public static final boolean DONE = false;\r
  43         private HTML fileCountLabel = new HTML("");\r
  44         private HTML fileSizeLabel = new HTML("");\r
  45         private HTML quotaIcon = new HTML("");\r
  46         private HTML quotaLabel = new HTML("");\r
  47         private HTML lastLoginLabel = new HTML("");\r
  48         private HTML currentlyShowingLabel = new HTML("");\r
  49 \r
  50         /**\r
  51          * An image bundle for this widget's images.\r
  52          */\r
  53         public interface Images extends ClientBundle {\r
  54 \r
  55                 @Source("gr/ebs/gss/resources/windowlist.png")\r
  56                 ImageResource totalFiles();\r
  57 \r
  58                 @Source("gr/ebs/gss/resources/database.png")\r
  59                 ImageResource totalSize();\r
  60 \r
  61                 @Source("gr/ebs/gss/resources/redled.png")\r
  62                 ImageResource redSize();\r
  63 \r
  64                 @Source("gr/ebs/gss/resources/greenled.png")\r
  65                 ImageResource greenSize();\r
  66 \r
  67                 @Source("gr/ebs/gss/resources/yellowled.png")\r
  68                 ImageResource yellowSize();\r
  69 \r
  70                 @Source("gr/ebs/gss/resources/xclock.png")\r
  71                 ImageResource lastLogin();\r
  72         }\r
  73 \r
  74         private final Images images;\r
  75 \r
  76         /**\r
  77          * The constructor of the status panel.\r
  78          *\r
  79          * @param theImages the supplied images\r
  80          */\r
  81         public StatusPanel(Images theImages) {\r
  82                 images = theImages;\r
  83                 HorizontalPanel outer = new HorizontalPanel();\r
  84                 outer.setWidth("100%");\r
  85                 outer.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_LEFT);\r
  86 \r
  87                 HorizontalPanel left = new HorizontalPanel();\r
  88                 left.setSpacing(8);\r
  89                 HorizontalPanel middle = new HorizontalPanel();\r
  90                 middle.setSpacing(8);\r
  91                 HorizontalPanel right = new HorizontalPanel();\r
  92                 right.setSpacing(8);\r
  93                 outer.add(left);\r
  94                 outer.add(middle);\r
  95                 outer.add(right);\r
  96                 left.add(new HTML("<b>Totals:</b> "));\r
  97                 left.add(AbstractImagePrototype.create(images.totalFiles()).createImage());\r
  98                 left.add(fileCountLabel);\r
  99                 left.add(AbstractImagePrototype.create(images.totalSize()).createImage());\r
 100                 left.add(fileSizeLabel);\r
 101                 quotaIcon.setHTML(AbstractImagePrototype.create(images.greenSize()).getHTML());\r
 102                 left.add(quotaIcon);\r
 103                 left.add(quotaLabel);\r
 104                 middle.add(AbstractImagePrototype.create(images.lastLogin()).createImage());\r
 105                 middle.add(new HTML("<b>Last login:</b> "));\r
 106                 middle.add(lastLoginLabel);\r
 107                 right.add(currentlyShowingLabel);\r
 108                 outer.setStyleName("statusbar-inner");\r
 109                 left.setStyleName("statusbar-inner");\r
 110                 middle.setStyleName("statusbar-inner");\r
 111                 right.setStyleName("statusbar-inner");\r
 112                 outer.setCellHorizontalAlignment(right, HasHorizontalAlignment.ALIGN_RIGHT);\r
 113 \r
 114                 initWidget(outer);\r
 115 \r
 116                 // Initialize and display the quota information.\r
 117                 DeferredCommand.addCommand(new IncrementalCommand() {\r
 118                         public boolean execute() {\r
 119                                 GSS app = GSS.get();\r
 120                                 UserResource user = app.getCurrentUserResource();\r
 121                                 if (user == null || app.getFolders().getRootItem() == null)\r
 122                                         return !DONE;\r
 123                                 displayStats(user);\r
 124                                 return DONE;\r
 125                         }\r
 126                 });\r
 127         }\r
 128 \r
 129         /**\r
 130          * Refresh the widget with the provided statistics.\r
 131          */\r
 132         private void displayStats(UserResource user) {\r
 133                 QuotaHolder stats = user.getQuota();\r
 134                 if (stats.getFileCount() == 1)\r
 135                         fileCountLabel.setHTML("1 file");\r
 136                 else\r
 137                         fileCountLabel.setHTML(stats.getFileCount() + " files");\r
 138                 fileSizeLabel.setHTML(stats.getFileSizeAsString() + " used");\r
 139                 long pc = stats.percentOfFreeSpace();\r
 140                 if(pc<10) {\r
 141                         quotaIcon.setHTML(AbstractImagePrototype.create(images.redSize()).getHTML());\r
 142                         quotaLabel.setHTML(stats.getQuotaLeftAsString() +" free");\r
 143                 } else if(pc<20) {\r
 144                         quotaIcon.setHTML(AbstractImagePrototype.create(images.yellowSize()).getHTML());\r
 145                         quotaLabel.setHTML(stats.getQuotaLeftAsString() +" free");\r
 146                 } else {\r
 147                         quotaIcon.setHTML(AbstractImagePrototype.create(images.greenSize()).getHTML());\r
 148                         quotaLabel.setHTML(stats.getQuotaLeftAsString() +" free");\r
 149                 }\r
 150                 final DateTimeFormat formatter = DateTimeFormat.getFormat("d/M/yyyy h:mm a");\r
 151                 lastLoginLabel.setHTML(formatter.format(user.getLastLogin()));\r
 152         }\r
 153 \r
 154         /**\r
 155          * Requests updated quota information from the server and refreshes\r
 156          * the display.\r
 157          */\r
 158         public void updateStats() {\r
 159                 final GSS app = GSS.get();\r
 160                 UserResource user = app.getCurrentUserResource();\r
 161                 GetCommand<UserResource> uc = new GetCommand<UserResource>(UserResource.class, user.getUri(), null){\r
 162                         @Override\r
 163                         public void onComplete() {\r
 164                                 displayStats(getResult());\r
 165                         }\r
 166 \r
 167                         @Override\r
 168                         public void onError(Throwable t) {\r
 169                                 if(t instanceof RestException)\r
 170                                         app.displayError("Unable to fetch quota:" +\r
 171                                                                 ((RestException)t).getHttpStatusText());\r
 172                                 else\r
 173                                         app.displayError("System error fetching quota:" +\r
 174                                                                 t.getMessage());\r
 175                                 GWT.log("ERR", t);\r
 176                         }\r
 177                 };\r
 178                 DeferredCommand.addCommand(uc);\r
 179         }\r
 180 \r
 181         /**\r
 182          * Displays the statistics for the current folder.\r
 183          *\r
 184          * @param text the statistics to display\r
 185          */\r
 186         public void updateCurrentlyShowing(String text) {\r
 187                 if (text == null)\r
 188                         currentlyShowingLabel.setText("");\r
 189                 else\r
 190                         currentlyShowingLabel.setHTML(" <b>Showing:</b> " + text);\r
 191         }\r
 192 \r
 193 }\r