UiContext.java

   1 package org.argeo.eclipse.ui.specific;
   2
   3 import java.util.Locale;
   4
   5 import javax.servlet.http.HttpServletRequest;
   6
   7 import org.eclipse.rap.rwt.RWT;
   8 import org.eclipse.swt.widgets.Display;
   9
  10 /** Singleton class providing single sources infos about the UI context. */
  11 public class UiContext {
  12
  13         public static HttpServletRequest getHttpRequest() {
  14                 return RWT.getRequest();
  15         }
  16
  17         public static Locale getLocale() {
  18                 return RWT.getUISession().getLocale();
  19         }
  20
  21         public static void setLocale(Locale locale) {
  22                 RWT.getUISession().setLocale(locale);
  23         }
  24
  25         /** Can always be null */
  26         @SuppressWarnings("unchecked")
  27         public static <T> T getData(String key) {
  28                 Display display = getDisplay();
  29                 if (display == null)
  30                         return null;
  31                 return (T) display.getData(key);
  32         }
  33
  34         public static void setData(String key, Object value) {
  35                 Display display = getDisplay();
  36                 if (display == null)
  37                         throw new SingleSourcingException(
  38                                         "Not display available in RAP context");
  39                 display.setData(key, value);
  40         }
  41
  42         private static Display getDisplay() {
  43                 return Display.getCurrent();
  44         }
  45
  46         private UiContext() {
  47         }
  48
  49 }