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