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                 if (Display.getCurrent() != null)
  23                         RWT.getUISession().setLocale(locale);
  24         }
  25
  26         /** Can always be null */
  27         @SuppressWarnings("unchecked")
  28         public static <T> T getData(String key) {
  29                 Display display = getDisplay();
  30                 if (display == null)
  31                         return null;
  32                 return (T) display.getData(key);
  33         }
  34
  35         public static void setData(String key, Object value) {
  36                 Display display = getDisplay();
  37                 if (display == null)
  38                         throw new SingleSourcingException(
  39                                         "Not display available in RAP context");
  40                 display.setData(key, value);
  41         }
  42
  43         private static Display getDisplay() {
  44                 return Display.getCurrent();
  45         }
  46
  47         private UiContext() {
  48         }
  49
  50 }