ui/RecentItems.java

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