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