rcp/CmsRcpDisplayFactory.java

   1 package org.argeo.cms.ui.rcp;
   2
   3 import java.nio.file.Path;
   4
   5 import org.argeo.api.cms.CmsApp;
   6 import org.argeo.util.OS;
   7 import org.eclipse.swt.widgets.Display;
   8 import org.osgi.service.event.EventAdmin;
   9 import org.eclipse.swt.events.DisposeListener;
  10
  11 /** Creates the SWT {@link Display} in a dedicated thread. */
  12 public class CmsRcpDisplayFactory {
  13         /** File name in a run directory */
  14         private final static String ARGEO_RCP_URL = "argeo.rcp.url";
  15
  16         /** There is only one display in RCP mode */
  17         private static Display display;
  18
  19         private CmsUiThread uiThread;
  20
  21         private boolean shutdown = false;
  22
  23         public void init() {
  24                 uiThread = new CmsUiThread();
  25                 uiThread.start();
  26                 while (display == null)
  27                         try {
  28                                 Thread.sleep(100);
  29                         } catch (InterruptedException e) {
  30                                 // silent
  31                         }
  32         }
  33
  34         public void destroy() {
  35                 shutdown = true;
  36                 display.wake();
  37                 try {
  38                         uiThread.join();
  39                 } catch (InterruptedException e) {
  40                         // silent
  41                 } finally {
  42                         uiThread = null;
  43                 }
  44         }
  45
  46         class CmsUiThread extends Thread {
  47
  48                 public CmsUiThread() {
  49                         super("CMS UI");
  50                 }
  51
  52                 @Override
  53                 public void run() {
  54                         display = Display.getDefault();
  55                         display.setRuntimeExceptionHandler((e) -> e.printStackTrace());
  56                         display.setErrorHandler((e) -> e.printStackTrace());
  57
  58 //                      for (String contextName : cmsApps.keySet()) {
  59 //                              openCmsApp(contextName);
  60 //                      }
  61
  62                         while (!shutdown) {
  63                                 if (!display.readAndDispatch())
  64                                         display.sleep();
  65                         }
  66                         display.dispose();
  67                         display = null;
  68                 }
  69         }
  70
  71         public static Display getDisplay() {
  72                 return display;
  73         }
  74
  75         public static void openCmsApp(EventAdmin eventAdmin, CmsApp cmsApp, String uiName,
  76                         DisposeListener disposeListener) {
  77                 CmsRcpDisplayFactory.getDisplay().syncExec(() -> {
  78                         CmsRcpApp cmsRcpApp = new CmsRcpApp(uiName);
  79                         cmsRcpApp.setEventAdmin(eventAdmin);
  80                         cmsRcpApp.setCmsApp(cmsApp, null);
  81                         cmsRcpApp.initRcpApp();
  82                         if (disposeListener != null)
  83                                 cmsRcpApp.getShell().addDisposeListener(disposeListener);
  84                 });
  85         }
  86
  87         public static Path getUrlRunFile() {
  88                 return OS.getRunDir().resolve(CmsRcpDisplayFactory.ARGEO_RCP_URL);
  89         }
  90 }