SimpleApp.java

   1 package org.argeo.cms.util;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.util.ArrayList;
   6 import java.util.Arrays;
   7 import java.util.HashMap;
   8 import java.util.Hashtable;
   9 import java.util.LinkedHashMap;
  10 import java.util.List;
  11 import java.util.Map;
  12
  13 import javax.jcr.Repository;
  14 import javax.jcr.RepositoryException;
  15 import javax.jcr.Session;
  16 import javax.jcr.security.Privilege;
  17 import javax.jcr.version.VersionManager;
  18
  19 import org.apache.commons.logging.Log;
  20 import org.apache.commons.logging.LogFactory;
  21 import org.argeo.cms.CmsException;
  22 import org.argeo.cms.ui.CmsConstants;
  23 import org.argeo.cms.ui.CmsUiProvider;
  24 import org.argeo.cms.ui.LifeCycleUiProvider;
  25 import org.argeo.jcr.JcrUtils;
  26 import org.eclipse.rap.rwt.RWT;
  27 import org.eclipse.rap.rwt.application.Application;
  28 import org.eclipse.rap.rwt.application.Application.OperationMode;
  29 import org.eclipse.rap.rwt.application.ApplicationConfiguration;
  30 import org.eclipse.rap.rwt.application.EntryPoint;
  31 import org.eclipse.rap.rwt.application.EntryPointFactory;
  32 import org.eclipse.rap.rwt.application.ExceptionHandler;
  33 import org.eclipse.rap.rwt.client.WebClient;
  34 import org.eclipse.rap.rwt.client.service.JavaScriptExecutor;
  35 import org.eclipse.rap.rwt.service.ResourceLoader;
  36 import org.eclipse.swt.SWT;
  37 import org.eclipse.swt.events.SelectionAdapter;
  38 import org.eclipse.swt.events.SelectionEvent;
  39 import org.eclipse.swt.layout.FillLayout;
  40 import org.eclipse.swt.widgets.Button;
  41 import org.eclipse.swt.widgets.Composite;
  42 import org.osgi.framework.BundleContext;
  43 import org.osgi.framework.ServiceRegistration;
  44
  45 /** A basic generic app based on {@link SimpleErgonomics}. */
  46 public class SimpleApp implements CmsConstants, ApplicationConfiguration {
  47         private final static Log log = LogFactory.getLog(SimpleApp.class);
  48
  49         private String contextName = null;
  50
  51         private Map<String, Map<String, String>> branding = new HashMap<String, Map<String, String>>();
  52         private Map<String, List<String>> styleSheets = new HashMap<String, List<String>>();
  53
  54         private List<String> resources = new ArrayList<String>();
  55
  56         private BundleContext bundleContext;
  57
  58         private Repository repository;
  59         private String workspace = null;
  60         private String jcrBasePath = "/";
  61         private List<String> roPrincipals = Arrays.asList("anonymous", "everyone");
  62         private List<String> rwPrincipals = Arrays.asList("everyone");
  63
  64         private CmsUiProvider header;
  65         private Map<String, CmsUiProvider> pages = new LinkedHashMap<String, CmsUiProvider>();
  66
  67         private Integer headerHeight = 40;
  68
  69         private ServiceRegistration<ApplicationConfiguration> appReg;
  70
  71         public void configure(Application application) {
  72                 try {
  73                         StyleSheetResourceLoader styleSheetRL = new StyleSheetResourceLoader(bundleContext);
  74                         BundleResourceLoader bundleRL = new BundleResourceLoader(bundleContext);
  75
  76                         application.setOperationMode(OperationMode.SWT_COMPATIBILITY);
  77                         // application.setOperationMode(OperationMode.JEE_COMPATIBILITY);
  78
  79                         application.setExceptionHandler(new CmsExceptionHandler());
  80
  81                         // loading animated gif
  82                         application.addResource(LOADING_IMAGE, createResourceLoader(LOADING_IMAGE));
  83                         // empty image
  84                         application.addResource(NO_IMAGE, createResourceLoader(NO_IMAGE));
  85
  86                         for (String resource : resources) {
  87                                 application.addResource(resource, bundleRL);
  88                                 if (log.isTraceEnabled())
  89                                         log.trace("Resource " + resource);
  90                         }
  91
  92                         Map<String, String> defaultBranding = null;
  93                         if (branding.containsKey("*"))
  94                                 defaultBranding = branding.get("*");
  95
  96                         // entry points
  97                         for (String page : pages.keySet()) {
  98                                 Map<String, String> properties = defaultBranding != null ? new HashMap<String, String>(defaultBranding)
  99                                                 : new HashMap<String, String>();
 100                                 if (branding.containsKey(page)) {
 101                                         properties.putAll(branding.get(page));
 102                                 }
 103                                 // favicon
 104                                 if (properties.containsKey(WebClient.FAVICON)) {
 105                                         String faviconRelPath = properties.get(WebClient.FAVICON);
 106                                         application.addResource(faviconRelPath, new BundleResourceLoader(bundleContext));
 107                                         if (log.isTraceEnabled())
 108                                                 log.trace("Favicon " + faviconRelPath);
 109
 110                                 }
 111
 112                                 // page title
 113                                 if (!properties.containsKey(WebClient.PAGE_TITLE)) {
 114                                         if (page.length() > 0)
 115                                                 properties.put(WebClient.PAGE_TITLE, Character.toUpperCase(page.charAt(0)) + page.substring(1));
 116                                 }
 117
 118                                 // default body HTML
 119                                 if (!properties.containsKey(WebClient.BODY_HTML))
 120                                         properties.put(WebClient.BODY_HTML, DEFAULT_LOADING_BODY);
 121
 122                                 //
 123                                 // ADD ENTRY POINT
 124                                 //
 125                                 application.addEntryPoint("/" + page,
 126                                                 new CmsEntryPointFactory(pages.get(page), repository, workspace, properties), properties);
 127                                 log.info("Page /" + page);
 128                         }
 129
 130                         // stylesheets
 131                         for (String themeId : styleSheets.keySet()) {
 132                                 List<String> cssLst = styleSheets.get(themeId);
 133                                 if (log.isDebugEnabled())
 134                                         log.debug("Theme " + themeId);
 135                                 for (String css : cssLst) {
 136                                         application.addStyleSheet(themeId, css, styleSheetRL);
 137                                         if (log.isTraceEnabled())
 138                                                 log.trace(" CSS " + css);
 139                                 }
 140
 141                         }
 142                 } catch (RuntimeException e) {
 143                         // Easier access to initialisation errors
 144                         log.error("Unexpected exception when configuring RWT application.", e);
 145                         throw e;
 146                 }
 147         }
 148
 149         public void init() throws RepositoryException {
 150                 Session session = null;
 151                 try {
 152                         session = JcrUtils.loginOrCreateWorkspace(repository, workspace);
 153                         VersionManager vm = session.getWorkspace().getVersionManager();
 154                         if (!vm.isCheckedOut("/"))
 155                                 vm.checkout("/");
 156                         JcrUtils.mkdirs(session, jcrBasePath);
 157                         for (String principal : rwPrincipals)
 158                                 JcrUtils.addPrivilege(session, jcrBasePath, principal, Privilege.JCR_WRITE);
 159                         for (String principal : roPrincipals)
 160                                 JcrUtils.addPrivilege(session, jcrBasePath, principal, Privilege.JCR_READ);
 161
 162                         for (String pageName : pages.keySet()) {
 163                                 try {
 164                                         initPage(session, pages.get(pageName));
 165                                         session.save();
 166                                 } catch (Exception e) {
 167                                         throw new CmsException("Cannot initialize page " + pageName, e);
 168                                 }
 169                         }
 170
 171                 } finally {
 172                         JcrUtils.logoutQuietly(session);
 173                 }
 174
 175                 // publish to OSGi
 176                 register();
 177         }
 178
 179         protected void initPage(Session adminSession, CmsUiProvider page) throws RepositoryException {
 180                 if (page instanceof LifeCycleUiProvider)
 181                         ((LifeCycleUiProvider) page).init(adminSession);
 182         }
 183
 184         public void destroy() {
 185                 for (String pageName : pages.keySet()) {
 186                         try {
 187                                 CmsUiProvider page = pages.get(pageName);
 188                                 if (page instanceof LifeCycleUiProvider)
 189                                         ((LifeCycleUiProvider) page).destroy();
 190                         } catch (Exception e) {
 191                                 log.error("Cannot destroy page " + pageName, e);
 192                         }
 193                 }
 194         }
 195
 196         protected void register() {
 197                 Hashtable<String, String> props = new Hashtable<String, String>();
 198                 if (contextName != null)
 199                         props.put("contextName", contextName);
 200                 appReg = bundleContext.registerService(ApplicationConfiguration.class, this, props);
 201                 if (log.isDebugEnabled())
 202                         log.debug("Registered " + (contextName == null ? "/" : contextName));
 203         }
 204
 205         protected void unregister() {
 206                 appReg.unregister();
 207                 if (log.isDebugEnabled())
 208                         log.debug("Unregistered " + (contextName == null ? "/" : contextName));
 209         }
 210
 211         public void setRepository(Repository repository) {
 212                 this.repository = repository;
 213         }
 214
 215         public void setWorkspace(String workspace) {
 216                 this.workspace = workspace;
 217         }
 218
 219         public void setHeader(CmsUiProvider header) {
 220                 this.header = header;
 221         }
 222
 223         public void setPages(Map<String, CmsUiProvider> pages) {
 224                 this.pages = pages;
 225         }
 226
 227         public void setJcrBasePath(String basePath) {
 228                 this.jcrBasePath = basePath;
 229         }
 230
 231         public void setRoPrincipals(List<String> roPrincipals) {
 232                 this.roPrincipals = roPrincipals;
 233         }
 234
 235         public void setRwPrincipals(List<String> rwPrincipals) {
 236                 this.rwPrincipals = rwPrincipals;
 237         }
 238
 239         public void setHeaderHeight(Integer headerHeight) {
 240                 this.headerHeight = headerHeight;
 241         }
 242
 243         public void setBranding(Map<String, Map<String, String>> branding) {
 244                 this.branding = branding;
 245         }
 246
 247         public void setStyleSheets(Map<String, List<String>> styleSheets) {
 248                 this.styleSheets = styleSheets;
 249         }
 250
 251         public void setBundleContext(BundleContext bundleContext) {
 252                 this.bundleContext = bundleContext;
 253         }
 254
 255         public void setResources(List<String> resources) {
 256                 this.resources = resources;
 257         }
 258
 259         public void setContextName(String contextName) {
 260                 this.contextName = contextName;
 261         }
 262
 263         class CmsExceptionHandler implements ExceptionHandler {
 264
 265                 @Override
 266                 public void handleException(Throwable throwable) {
 267                         // TODO be smarter
 268                         CmsUtils.getCmsView().exception(throwable);
 269                 }
 270
 271         }
 272
 273         private class CmsEntryPointFactory implements EntryPointFactory {
 274                 private final CmsUiProvider page;
 275                 private final Repository repository;
 276                 private final String workspace;
 277                 private final Map<String, String> properties;
 278
 279                 public CmsEntryPointFactory(CmsUiProvider page, Repository repository, String workspace,
 280                                 Map<String, String> properties) {
 281                         this.page = page;
 282                         this.repository = repository;
 283                         this.workspace = workspace;
 284                         this.properties = properties;
 285                 }
 286
 287                 @Override
 288                 public EntryPoint create() {
 289                         SimpleErgonomics entryPoint = new SimpleErgonomics(repository, workspace, jcrBasePath, page, properties) {
 290                                 private static final long serialVersionUID = -637940404865527290L;
 291
 292                                 @Override
 293                                 protected void createAdminArea(Composite parent) {
 294                                         Composite adminArea = new Composite(parent, SWT.NONE);
 295                                         adminArea.setLayout(new FillLayout());
 296                                         Button refresh = new Button(adminArea, SWT.PUSH);
 297                                         refresh.setText("Reload App");
 298                                         refresh.addSelectionListener(new SelectionAdapter() {
 299                                                 private static final long serialVersionUID = -7671999525536351366L;
 300
 301                                                 @Override
 302                                                 public void widgetSelected(SelectionEvent e) {
 303                                                         long timeBeforeReload = 1000;
 304                                                         RWT.getClient().getService(JavaScriptExecutor.class).execute(
 305                                                                         "setTimeout(function() { " + "location.reload();" + "}," + timeBeforeReload + ");");
 306                                                         reloadApp();
 307                                                 }
 308                                         });
 309                                 }
 310                         };
 311                         // entryPoint.setState("");
 312                         entryPoint.setHeader(header);
 313                         entryPoint.setHeaderHeight(headerHeight);
 314                         // CmsSession.current.set(entryPoint);
 315                         return entryPoint;
 316                 }
 317
 318                 private void reloadApp() {
 319                         new Thread("Refresh app") {
 320                                 @Override
 321                                 public void run() {
 322                                         unregister();
 323                                         register();
 324                                 }
 325                         }.start();
 326                 }
 327         }
 328
 329         private static ResourceLoader createResourceLoader(final String resourceName) {
 330                 return new ResourceLoader() {
 331                         public InputStream getResourceAsStream(String resourceName) throws IOException {
 332                                 return getClass().getClassLoader().getResourceAsStream(resourceName);
 333                         }
 334                 };
 335         }
 336
 337         // private static ResourceLoader createUrlResourceLoader(final URL url) {
 338         // return new ResourceLoader() {
 339         // public InputStream getResourceAsStream(String resourceName)
 340         // throws IOException {
 341         // return url.openStream();
 342         // }
 343         // };
 344         // }
 345
 346         /*
 347          * TEXTS
 348          */
 349         private static String DEFAULT_LOADING_BODY = "<div"
 350                         + " style=\"position: absolute; left: 50%; top: 50%; margin: -32px -32px; width: 64px; height:64px\">"
 351                         + "<img src=\"./rwt-resources/" + LOADING_IMAGE
 352                         + "\" width=\"32\" height=\"32\" style=\"margin: 16px 16px\"/>" + "</div>";
 353 }