argeo/suite/ui/RecentItems.java

   1 package org.argeo.suite.ui;
   2
   3 import static org.argeo.eclipse.ui.EclipseUiUtils.notEmpty;
   4
   5 import java.util.List;
   6 import java.util.Map;
   7
   8 import javax.jcr.Node;
   9 import javax.jcr.NodeIterator;
  10 import javax.jcr.RepositoryException;
  11 import javax.jcr.Session;
  12 import javax.jcr.observation.Event;
  13 import javax.jcr.observation.EventIterator;
  14 import javax.jcr.observation.EventListener;
  15 import javax.jcr.query.Query;
  16 import javax.jcr.query.QueryResult;
  17
  18 import org.argeo.cms.ui.CmsTheme;
  19 import org.argeo.cms.ui.CmsUiProvider;
  20 import org.argeo.cms.ui.CmsView;
  21 import org.argeo.cms.ui.util.CmsUiUtils;
  22 import org.argeo.eclipse.ui.EclipseUiUtils;
  23 import org.argeo.entity.EntityType;
  24 import org.argeo.jcr.Jcr;
  25 import org.argeo.jcr.JcrUtils;
  26 import org.argeo.suite.ui.widgets.DelayedText;
  27 import org.argeo.suite.util.XPathUtils;
  28 import org.eclipse.jface.layout.TableColumnLayout;
  29 import org.eclipse.jface.viewers.ColumnLabelProvider;
  30 import org.eclipse.jface.viewers.ColumnWeightData;
  31 import org.eclipse.jface.viewers.DoubleClickEvent;
  32 import org.eclipse.jface.viewers.IDoubleClickListener;
  33 import org.eclipse.jface.viewers.ILabelProvider;
  34 import org.eclipse.jface.viewers.ISelectionChangedListener;
  35 import org.eclipse.jface.viewers.IStructuredContentProvider;
  36 import org.eclipse.jface.viewers.SelectionChangedEvent;
  37 import org.eclipse.jface.viewers.TableViewer;
  38 import org.eclipse.jface.viewers.Viewer;
  39 import org.eclipse.swt.SWT;
  40 import org.eclipse.swt.events.KeyEvent;
  41 import org.eclipse.swt.events.KeyListener;
  42 import org.eclipse.swt.events.ModifyEvent;
  43 import org.eclipse.swt.events.ModifyListener;
  44 import org.eclipse.swt.layout.GridData;
  45 import org.eclipse.swt.layout.GridLayout;
  46 import org.eclipse.swt.widgets.Composite;
  47 import org.eclipse.swt.widgets.Control;
  48 import org.eclipse.swt.widgets.Table;
  49 import org.eclipse.swt.widgets.TableColumn;
  50 import org.eclipse.swt.widgets.Text;
  51 import org.eclipse.swt.widgets.ToolBar;
  52 import org.eclipse.swt.widgets.ToolItem;
  53
  54 /** List recent items. */
  55 public class RecentItems implements CmsUiProvider {
  56         private final static int SEARCH_TEXT_DELAY = 800;
  57         private final static int SEARCH_DEFAULT_LIMIT = 100;
  58
  59         private CmsTheme theme;
  60
  61         private String entityType;
  62
  63         static enum Property {
  64                 entityTypes;
  65         }
  66
  67         @Override
  68         public Control createUi(Composite parent, Node context) throws RepositoryException {
  69                 theme = CmsTheme.getCmsTheme(parent);
  70                 parent.setLayout(new GridLayout());
  71 //              parent.setLayout(CmsUiUtils.noSpaceGridLayout());
  72                 parent.setLayout(new GridLayout());
  73
  74 //              Composite top = new Composite(parent, SWT.BORDER);
  75 //              CmsUiUtils.style(top, SuiteStyle.recentItems);
  76 //              top.setLayoutData(CmsUiUtils.fillWidth());
  77 //              top.setLayout(CmsUiUtils.noSpaceGridLayout(2));
  78 //              Label lbl = new Label(top, SWT.FLAT);
  79 //              lbl.setLayoutData(CmsUiUtils.fillWidth());
  80 //              lbl.setText(SuiteMsg.recentItems.lead());
  81 //              CmsUiUtils.style(lbl, SuiteStyle.recentItems);
  82 //
  83 //              ToolBar topToolBar = new ToolBar(top, SWT.NONE);
  84 //              ToolItem addItem = new ToolItem(topToolBar, SWT.FLAT);
  85 ////            CmsUiUtils.style(addItem, SuiteStyle.recentItems);
  86 //              addItem.setImage(SuiteIcon.add.getSmallIcon(theme));
  87
  88                 if (context == null)
  89                         return null;
  90                 SingleEntityViewer entityViewer = new SingleEntityViewer(parent, SWT.NONE, context.getSession());
  91                 entityViewer.createUi();
  92                 entityViewer.getViewer().getTable().setLayoutData(CmsUiUtils.fillAll());
  93
  94                 Composite bottom = new Composite(parent, SWT.NONE);
  95                 bottom.setLayoutData(CmsUiUtils.fillWidth());
  96                 bottom.setLayout(CmsUiUtils.noSpaceGridLayout());
  97                 ToolBar bottomToolBar = new ToolBar(bottom, SWT.NONE);
  98                 bottomToolBar.setLayoutData(new GridData(SWT.END, SWT.FILL, true, false));
  99                 ToolItem deleteItem = new ToolItem(bottomToolBar, SWT.FLAT);
 100                 deleteItem.setEnabled(false);
 101 //              CmsUiUtils.style(deleteItem, SuiteStyle.recentItems);
 102                 deleteItem.setImage(SuiteIcon.delete.getSmallIcon(theme));
 103                 ToolItem addItem = new ToolItem(bottomToolBar, SWT.FLAT);
 104                 addItem.setImage(SuiteIcon.add.getSmallIcon(theme));
 105                 entityViewer.getViewer().addDoubleClickListener(new IDoubleClickListener() {
 106
 107                         @Override
 108                         public void doubleClick(DoubleClickEvent event) {
 109                                 Node node = (Node) entityViewer.getViewer().getStructuredSelection().getFirstElement();
 110                                 if (node != null)
 111                                         CmsView.getCmsView(parent).sendEvent(SuiteEvent.openNewPart.topic(),
 112                                                         SuiteEvent.eventProperties(node));
 113
 114                         }
 115                 });
 116                 entityViewer.getViewer().addSelectionChangedListener(new ISelectionChangedListener() {
 117                         public void selectionChanged(SelectionChangedEvent event) {
 118                                 Node node = (Node) entityViewer.getViewer().getStructuredSelection().getFirstElement();
 119                                 if (node != null) {
 120                                         CmsView.getCmsView(parent).sendEvent(SuiteEvent.refreshPart.topic(),
 121                                                         SuiteEvent.eventProperties(node));
 122                                         deleteItem.setEnabled(true);
 123                                 } else {
 124                                         deleteItem.setEnabled(false);
 125                                 }
 126                         }
 127                 });
 128
 129                 return entityViewer.filterTxt;
 130
 131         }
 132
 133         public void init(Map<String, String> properties) {
 134                 // TODO manage multiple entities
 135                 entityType = properties.get(Property.entityTypes.name());
 136         }
 137
 138         class SingleEntityViewer {
 139                 Composite parent;
 140                 Text filterTxt;
 141                 TableViewer viewer;
 142                 Session session;
 143
 144                 public SingleEntityViewer(Composite parent, int style, Session session) {
 145                         this.parent = parent;
 146                         this.session = session;
 147                 }
 148
 149                 public void createUi() {
 150                         // MainLayout
 151                         addFilterPanel(parent);
 152                         viewer = createListPart(parent, new SingleEntityLabelProvider());
 153                         refreshFilteredList();
 154
 155                         try {
 156                                 String[] nodeTypes = entityType != null && entityType.contains(":") ? new String[] { entityType }
 157                                                 : null;
 158                                 session.getWorkspace().getObservationManager().addEventListener(new EventListener() {
 159
 160                                         @Override
 161                                         public void onEvent(EventIterator events) {
 162                                                 parent.getDisplay().asyncExec(() -> refreshFilteredList());
 163                                         }
 164                                 }, Event.PROPERTY_CHANGED | Event.NODE_ADDED | Event.NODE_REMOVED | Event.PROPERTY_ADDED, "/", true,
 165                                                 null, nodeTypes, false);
 166                         } catch (RepositoryException e) {
 167                                 throw new IllegalStateException("Cannot add JCR observer", e);
 168                         }
 169
 170                 }
 171
 172                 private void addFilterPanel(Composite parent) {
 173                         // Use a delayed text: the query won't be done until the user stop
 174                         // typing for 800ms
 175                         int style = SWT.BORDER | SWT.SEARCH | SWT.ICON_CANCEL;
 176                         DelayedText delayedText = new DelayedText(parent, style, SEARCH_TEXT_DELAY);
 177                         filterTxt = delayedText.getText();
 178                         filterTxt.setLayoutData(EclipseUiUtils.fillWidth());
 179
 180                         // final ServerPushSession pushSession = new ServerPushSession();
 181                         delayedText.addDelayedModifyListener(null, new ModifyListener() {
 182                                 private static final long serialVersionUID = 5003010530960334977L;
 183
 184                                 public void modifyText(ModifyEvent event) {
 185                                         delayedText.getText().getDisplay().asyncExec(new Runnable() {
 186                                                 @Override
 187                                                 public void run() {
 188                                                         refreshFilteredList();
 189                                                 }
 190                                         });
 191                                         // pushSession.stop();
 192                                 }
 193                         });
 194
 195                         // Jump to the first item of the list using the down arrow
 196                         filterTxt.addKeyListener(new KeyListener() {
 197                                 private static final long serialVersionUID = -4523394262771183968L;
 198
 199                                 @Override
 200                                 public void keyReleased(KeyEvent e) {
 201                                 }
 202
 203                                 @Override
 204                                 public void keyPressed(KeyEvent e) {
 205                                         // boolean shiftPressed = (e.stateMask & SWT.SHIFT) != 0;
 206                                         // boolean altPressed = (e.stateMask & SWT.ALT) != 0;
 207                                         if (e.keyCode == SWT.ARROW_DOWN || e.keyCode == SWT.TAB) {
 208 //                                      Object first = entityViewer.getElementAt(0);
 209 //                                      if (first != null) {
 210 //                                              entityViewer.getTable().setFocus();
 211 //                                              entityViewer.setSelection(new StructuredSelection(first), true);
 212 //                                      }
 213                                                 e.doit = false;
 214                                         }
 215                                 }
 216                         });
 217
 218                         parent.addDisposeListener((e) -> {
 219                                 delayedText.close();
 220                         });
 221                 }
 222
 223                 protected TableViewer createListPart(Composite parent, ILabelProvider labelProvider) {
 224 //                      parent.setLayout(new GridLayout());
 225 //                      parent.setLayout(CmsUiUtils.noSpaceGridLayout());
 226
 227                         Composite tableComposite = new Composite(parent, SWT.NONE);
 228                         GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_VERTICAL
 229                                         | GridData.VERTICAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
 230                         tableComposite.setLayoutData(gd);
 231
 232                         TableViewer viewer = new TableViewer(tableComposite, SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
 233                         viewer.setLabelProvider(labelProvider);
 234
 235                         TableColumn singleColumn = new TableColumn(viewer.getTable(), SWT.V_SCROLL);
 236                         TableColumnLayout tableColumnLayout = new TableColumnLayout();
 237                         tableColumnLayout.setColumnData(singleColumn, new ColumnWeightData(85));
 238                         tableComposite.setLayout(tableColumnLayout);
 239
 240                         // Corresponding table & style
 241                         Table table = viewer.getTable();
 242 //                      Listener[] mouseDownListeners = table.getListeners(SWT.MouseDown);
 243 //                      for (Listener listener :  table.getListeners(SWT.MouseDown))
 244 //                              table.removeListener(SWT.MouseDown, listener);
 245 //                      for (Listener listener :  table.getListeners(SWT.MouseUp))
 246 //                              table.removeListener(SWT.MouseUp, listener);
 247 //                      for (Listener listener :  table.getListeners(SWT.MouseDoubleClick))
 248 //                              table.removeListener(SWT.MouseDoubleClick, listener);
 249 //
 250 //                      table.addMouseListener(new MouseListener() {
 251 //
 252 //                              @Override
 253 //                              public void mouseUp(MouseEvent e) {
 254 //                                      System.out.println("Mouse up: "+e);
 255 //                              }
 256 //
 257 //                              @Override
 258 //                              public void mouseDown(MouseEvent e) {
 259 //                                      System.out.println("Mouse down: "+e);
 260 //                              }
 261 //
 262 //                              @Override
 263 //                              public void mouseDoubleClick(MouseEvent e) {
 264 //                                      System.out.println("Mouse double: "+e);
 265 //
 266 //                              }
 267 //                      });
 268                         table.setLinesVisible(true);
 269                         table.setHeaderVisible(false);
 270                         // CmsUiUtils.markup(table);
 271                         // CmsUiUtils.setItemHeight(table, 26);
 272
 273                         viewer.setContentProvider(new BasicNodeListContentProvider());
 274                         return viewer;
 275                 }
 276
 277 //              public boolean setFocus() {
 278 //                      refreshFilteredList();
 279 //                      return parent.setFocus();
 280 //              }
 281
 282                 public void forceRefresh(Object object) {
 283                         refreshFilteredList();
 284                 }
 285
 286                 protected void refreshFilteredList() {
 287                         try {
 288                                 String filter = filterTxt.getText();
 289                                 // Prevents the query on the full repository
 290                                 // if (isEmpty(filter)) {
 291                                 // entityViewer.setInput(null);
 292                                 // return;
 293                                 // }
 294
 295                                 // XPATH Query
 296                                 String xpathQueryStr;
 297                                 if (entityType != null) {
 298                                         int indexColumn = entityType.indexOf(':');
 299                                         if (indexColumn > 0) {// JCR node type
 300                                                 xpathQueryStr = "//element(*, " + entityType + ") order by @jcr:created descending";
 301                                         } else {
 302                                                 xpathQueryStr = entityType.contains(":") ? "//element(*, " + entityType + ")"
 303                                                                 : "//element(*, " + EntityType.entity.get() + ")[@entity:type='" + entityType + "']";
 304                                         }
 305                                 } else {
 306                                         xpathQueryStr = "//element(*, " + EntityType.entity.get() + ")";
 307                                 }
 308 //                      String xpathQueryStr = "//element(*, " + ConnectTypes.CONNECT_ENTITY + ")";
 309                                 String xpathFilter = XPathUtils.getFreeTextConstraint(filter);
 310                                 if (notEmpty(xpathFilter))
 311                                         xpathQueryStr += "[" + xpathFilter + "]";
 312
 313 //                              long begin = System.currentTimeMillis();
 314                                 // session.refresh(false);
 315                                 Query xpathQuery = XPathUtils.createQuery(session, xpathQueryStr);
 316
 317                                 xpathQuery.setLimit(SEARCH_DEFAULT_LIMIT);
 318                                 QueryResult result = xpathQuery.execute();
 319
 320                                 NodeIterator nit = result.getNodes();
 321                                 viewer.setInput(JcrUtils.nodeIteratorToList(nit));
 322 //                              if (log.isTraceEnabled()) {
 323 //                                      long end = System.currentTimeMillis();
 324 //                                      log.trace("Quick Search - Found: " + nit.getSize() + " in " + (end - begin)
 325 //                                                      + " ms by executing XPath query (" + xpathQueryStr + ").");
 326 //                              }
 327                         } catch (RepositoryException e) {
 328                                 throw new IllegalStateException("Unable to list entities", e);
 329                         }
 330                 }
 331
 332                 public TableViewer getViewer() {
 333                         return viewer;
 334                 }
 335
 336                 class SingleEntityLabelProvider extends ColumnLabelProvider {
 337                         private static final long serialVersionUID = -2209337675781795677L;
 338
 339                         @Override
 340                         public String getText(Object element) {
 341                                 return Jcr.getTitle((Node) element);
 342                         }
 343
 344                 }
 345
 346                 class BasicNodeListContentProvider implements IStructuredContentProvider {
 347                         private static final long serialVersionUID = 1L;
 348                         // keep a cache of the Nodes in the content provider to be able to
 349                         // manage long request
 350                         private List<Node> nodes;
 351
 352                         public void dispose() {
 353                         }
 354
 355                         /** Expects a list of nodes as a new input */
 356                         @SuppressWarnings("unchecked")
 357                         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 358                                 nodes = (List<Node>) newInput;
 359                         }
 360
 361                         public Object[] getElements(Object arg0) {
 362                                 return nodes.toArray();
 363                         }
 364                 }
 365         }
 366 }