Refactor SWT directory structure.

[lgpl/argeo-commons.git] / swt / rap / org.argeo.swt.specific.rap / src / org / argeo / eclipse / ui / specific / UiContext.java

diff --git a/swt/rap/org.argeo.swt.specific.rap/src/org/argeo/eclipse/ui/specific/UiContext.java b/swt/rap/org.argeo.swt.specific.rap/src/org/argeo/eclipse/ui/specific/UiContext.java
new file mode 100644 (file)
index 0000000..72e17a2
--- /dev/null
+++ b/swt/rap/org.argeo.swt.specific.rap/src/org/argeo/eclipse/ui/specific/UiContext.java
@@ -0,0 +1,59 @@
+package org.argeo.eclipse.ui.specific;
+
+import java.util.Locale;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.eclipse.rap.rwt.RWT;
+import org.eclipse.swt.widgets.Display;
+
+/** Singleton class providing single sources infos about the UI context. */
+public class UiContext {
+       /** Can be null, thus indicating that we are not in a web context. */
+       public static HttpServletRequest getHttpRequest() {
+               return RWT.getRequest();
+       }
+
+       public static HttpServletResponse getHttpResponse() {
+               return RWT.getResponse();
+       }
+
+       public static Locale getLocale() {
+               if (Display.getCurrent() != null)
+                       return RWT.getUISession().getLocale();
+               else
+                       return Locale.getDefault();
+       }
+
+       public static void setLocale(Locale locale) {
+               if (Display.getCurrent() != null)
+                       RWT.getUISession().setLocale(locale);
+               else
+                       Locale.setDefault(locale);
+       }
+
+       /** Can always be null */
+       @SuppressWarnings("unchecked")
+       public static <T> T getData(String key) {
+               Display display = getDisplay();
+               if (display == null)
+                       return null;
+               return (T) display.getData(key);
+       }
+
+       public static void setData(String key, Object value) {
+               Display display = getDisplay();
+               if (display == null)
+                       throw new IllegalStateException("Not display available");
+               display.setData(key, value);
+       }
+
+       private static Display getDisplay() {
+               return Display.getCurrent();
+       }
+
+       private UiContext() {
+       }
+
+}