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