org.argeo.cms.ui/src/org/argeo/cms/script/ScriptUi.java

   1 package org.argeo.cms.script;
   2
   3 import java.net.URL;
   4
   5 import javax.jcr.Node;
   6 import javax.jcr.RepositoryException;
   7 import javax.script.Invocable;
   8 import javax.script.ScriptEngine;
   9 import javax.script.ScriptException;
  10
  11 import org.apache.commons.logging.Log;
  12 import org.apache.commons.logging.LogFactory;
  13 import org.argeo.cms.ui.CmsUiProvider;
  14 import org.eclipse.swt.widgets.Composite;
  15 import org.eclipse.swt.widgets.Control;
  16 import org.osgi.framework.BundleContext;
  17
  18 class ScriptUi implements CmsUiProvider {
  19         private final static Log log = LogFactory.getLog(ScriptUi.class);
  20
  21         private boolean development = true;
  22         private ScriptEngine scriptEngine;
  23
  24         private URL appUrl;
  25         // private BundleContext bundleContext;
  26         // private String path;
  27
  28         // private Bindings bindings;
  29         // private String script;
  30
  31         public ScriptUi(BundleContext bundleContext,ScriptEngine scriptEngine, String path) {
  32                 this.scriptEngine = scriptEngine;
  33 ////            ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
  34 //              ClassLoader bundleCl = bundleContext.getBundle().adapt(BundleWiring.class).getClassLoader();
  35 //              ClassLoader originalCcl = Thread.currentThread().getContextClassLoader();
  36 //              try {
  37 ////                    Thread.currentThread().setContextClassLoader(bundleCl);
  38 ////                    scriptEngine = scriptEngineManager.getEngineByName("JavaScript");
  39 ////                    scriptEngine.put(CmsScriptRwtApplication.BC, bundleContext);
  40 //                      scriptEngine = CmsScriptRwtApplication.loadScriptEngine(originalCcl, bundleCl);
  41 //
  42 //              } catch (Exception e) {
  43 //                      e.printStackTrace();
  44 //              } finally {
  45 //                      Thread.currentThread().setContextClassLoader(originalCcl);
  46 //              }
  47                 this.appUrl = bundleContext.getBundle().getEntry(path);
  48                 load();
  49         }
  50
  51         private void load() {
  52 //              try (Reader reader = new InputStreamReader(appUrl.openStream())) {
  53 //                      scriptEngine.eval(reader);
  54 //              } catch (IOException | ScriptException e) {
  55 //                      log.warn("Cannot execute " + appUrl, e);
  56 //              }
  57
  58                 try {
  59                         scriptEngine.eval("load('" + appUrl + "')");
  60                 } catch (ScriptException e) {
  61                         log.warn("Cannot execute " + appUrl, e);
  62                 }
  63
  64         }
  65
  66         // public ScriptUiProvider(ScriptEngine scriptEngine, String script) throws
  67         // ScriptException {
  68         // super();
  69         // this.scriptEngine = scriptEngine;
  70         // this.script = script;
  71         // bindings = scriptEngine.createBindings();
  72         // scriptEngine.eval(script, bindings);
  73         // }
  74
  75         @Override
  76         public Control createUi(Composite parent, Node context) throws RepositoryException {
  77                 long begin = System.currentTimeMillis();
  78                 // if (bindings == null) {
  79                 // bindings = scriptEngine.createBindings();
  80                 // try {
  81                 // scriptEngine.eval(script, bindings);
  82                 // } catch (ScriptException e) {
  83                 // log.warn("Cannot evaluate script", e);
  84                 // }
  85                 // }
  86                 // Bindings bindings = scriptEngine.createBindings();
  87                 // bindings.put("parent", parent);
  88                 // bindings.put("context", context);
  89                 // URL appUrl = bundleContext.getBundle().getEntry(path);
  90                 // try (Reader reader = new InputStreamReader(appUrl.openStream())) {
  91                 // scriptEngine.eval(reader,bindings);
  92                 // } catch (IOException | ScriptException e) {
  93                 // log.warn("Cannot execute " + appUrl, e);
  94                 // }
  95
  96                 if (development)
  97                         load();
  98
  99                 Invocable invocable = (Invocable) scriptEngine;
 100                 try {
 101                         invocable.invokeFunction("createUi", parent, context);
 102                 } catch (NoSuchMethodException e) {
 103                         // TODO Auto-generated catch block
 104                         e.printStackTrace();
 105                 } catch (ScriptException e) {
 106                         // TODO Auto-generated catch block
 107                         e.printStackTrace();
 108                 }
 109
 110                 long duration = System.currentTimeMillis() - begin;
 111                 if (log.isTraceEnabled())
 112                         log.trace(appUrl + " UI in " + duration + " ms");
 113                 return null;
 114         }
 115
 116 }