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