org.argeo.cms/src/org/argeo/cms/maintenance/Browse.java

   1 package org.argeo.cms.maintenance;
   2
   3 import static javax.jcr.Node.JCR_CONTENT;
   4 import static org.eclipse.swt.SWT.RIGHT;
   5
   6 import java.text.DateFormat;
   7 import java.text.SimpleDateFormat;
   8 import java.util.LinkedHashMap;
   9
  10 import javax.jcr.ItemNotFoundException;
  11 import javax.jcr.Node;
  12 import javax.jcr.NodeIterator;
  13 import javax.jcr.Property;
  14 import javax.jcr.PropertyIterator;
  15 import javax.jcr.PropertyType;
  16 import javax.jcr.RepositoryException;
  17 import javax.jcr.Value;
  18
  19 import org.argeo.ArgeoException;
  20 import org.argeo.cms.CmsException;
  21 import org.argeo.cms.CmsTypes;
  22 import org.argeo.cms.CmsUiProvider;
  23 import org.argeo.cms.text.Img;
  24 import org.argeo.cms.util.CmsLink;
  25 import org.argeo.cms.util.CmsUtils;
  26 import org.argeo.cms.widgets.EditableImage;
  27 import org.argeo.jcr.JcrUtils;
  28 import org.eclipse.jface.viewers.ColumnLabelProvider;
  29 import org.eclipse.jface.viewers.ILazyContentProvider;
  30 import org.eclipse.jface.viewers.ISelectionChangedListener;
  31 import org.eclipse.jface.viewers.IStructuredSelection;
  32 import org.eclipse.jface.viewers.SelectionChangedEvent;
  33 import org.eclipse.jface.viewers.StructuredSelection;
  34 import org.eclipse.jface.viewers.TableViewer;
  35 import org.eclipse.jface.viewers.TableViewerColumn;
  36 import org.eclipse.jface.viewers.Viewer;
  37 import org.eclipse.rap.rwt.RWT;
  38 import org.eclipse.swt.SWT;
  39 import org.eclipse.swt.custom.ScrolledComposite;
  40 import org.eclipse.swt.events.ControlAdapter;
  41 import org.eclipse.swt.events.ControlEvent;
  42 import org.eclipse.swt.events.KeyEvent;
  43 import org.eclipse.swt.events.KeyListener;
  44 import org.eclipse.swt.events.ModifyEvent;
  45 import org.eclipse.swt.events.ModifyListener;
  46 import org.eclipse.swt.graphics.Point;
  47 import org.eclipse.swt.graphics.Rectangle;
  48 import org.eclipse.swt.layout.GridData;
  49 import org.eclipse.swt.layout.GridLayout;
  50 import org.eclipse.swt.widgets.Composite;
  51 import org.eclipse.swt.widgets.Control;
  52 import org.eclipse.swt.widgets.Label;
  53 import org.eclipse.swt.widgets.Table;
  54 import org.eclipse.swt.widgets.TableColumn;
  55 import org.eclipse.swt.widgets.Text;
  56
  57 public class Browse implements CmsUiProvider {
  58
  59         // Some local constants to experiment. should be cleaned
  60         private final static String BROWSE_PREFIX = "browse#";
  61         private final static int THUMBNAIL_WIDTH = 400;
  62         private final static int COLUMN_WIDTH = 160;
  63         private DateFormat timeFormatter = new SimpleDateFormat("dd-MM-yyyy', 'HH:mm");
  64
  65
  66         // keep a cache of the opened nodes
  67         // Key is the path
  68         private LinkedHashMap<String, FilterEntitiesVirtualTable> browserCols = new LinkedHashMap<String, Browse.FilterEntitiesVirtualTable>();
  69         private Composite nodeDisplayParent;
  70         private Composite colViewer;
  71         private ScrolledComposite scrolledCmp;
  72         private Text parentPathTxt;
  73         private Text filterTxt;
  74         private Node currEdited;
  75
  76         private String initialPath;
  77
  78         @Override
  79         public Control createUi(Composite parent, Node context)
  80                         throws RepositoryException {
  81                 if (context == null)
  82                         throw new CmsException("Context cannot be null");
  83                 GridLayout layout = CmsUtils.noSpaceGridLayout();
  84                 layout.numColumns = 2;
  85                 parent.setLayout(layout);
  86
  87                 // Left
  88                 Composite leftCmp = new Composite(parent, SWT.NO_FOCUS);
  89                 leftCmp.setLayoutData(CmsUtils.fillAll());
  90                 createBrowserPart(leftCmp, context);
  91
  92                 // Right
  93                 nodeDisplayParent = new Composite(parent, SWT.NO_FOCUS | SWT.BORDER);
  94                 GridData gd = new GridData(SWT.RIGHT, SWT.FILL, false, true);
  95                 gd.widthHint = THUMBNAIL_WIDTH;
  96                 nodeDisplayParent.setLayoutData(gd);
  97                 createNodeView(nodeDisplayParent, context);
  98
  99                 // INIT
 100                 setEdited(context);
 101                 initialPath = context.getPath();
 102
 103                 // Workaround we don't yet manage the delete to display parent of the
 104                 // initial context node
 105
 106                 return null;
 107         }
 108
 109         private void createBrowserPart(Composite parent, Node context)
 110                         throws RepositoryException {
 111                 GridLayout layout = CmsUtils.noSpaceGridLayout();
 112                 parent.setLayout(layout);
 113                 Composite filterCmp = new Composite(parent, SWT.NO_FOCUS);
 114                 filterCmp.setLayoutData(CmsUtils.fillWidth());
 115
 116                 // top filter
 117                 addFilterPanel(filterCmp);
 118
 119                 // scrolled composite
 120                 scrolledCmp = new ScrolledComposite(parent, SWT.H_SCROLL | SWT.BORDER
 121                                 | SWT.NO_FOCUS);
 122                 scrolledCmp.setLayoutData(CmsUtils.fillAll());
 123                 scrolledCmp.setExpandVertical(true);
 124                 scrolledCmp.setExpandHorizontal(true);
 125                 scrolledCmp.setShowFocusedControl(true);
 126
 127                 colViewer = new Composite(scrolledCmp, SWT.NO_FOCUS);
 128                 scrolledCmp.setContent(colViewer);
 129                 scrolledCmp.addControlListener(new ControlAdapter() {
 130                         private static final long serialVersionUID = 6589392045145698201L;
 131
 132                         @Override
 133                         public void controlResized(ControlEvent e) {
 134                                 Rectangle r = scrolledCmp.getClientArea();
 135                                 scrolledCmp.setMinSize(colViewer.computeSize(SWT.DEFAULT,
 136                                                 r.height));
 137                         }
 138                 });
 139                 initExplorer(colViewer, context);
 140         }
 141
 142         private Control initExplorer(Composite parent, Node context)
 143                         throws RepositoryException {
 144                 parent.setLayout(CmsUtils.noSpaceGridLayout());
 145                 createBrowserColumn(parent, context);
 146                 return null;
 147         }
 148
 149         private Control createBrowserColumn(Composite parent, Node context)
 150                         throws RepositoryException {
 151                 // TODO style is not correctly managed.
 152                 FilterEntitiesVirtualTable table = new FilterEntitiesVirtualTable(
 153                                 parent, SWT.BORDER | SWT.NO_FOCUS, context);
 154                 // CmsUtils.style(table, ArgeoOrgStyle.browserColumn.style());
 155                 table.filterList("*");
 156                 table.setLayoutData(new GridData(SWT.LEFT, SWT.FILL, false, true));
 157                 browserCols.put(context.getPath(), table);
 158                 return null;
 159         }
 160
 161         public void addFilterPanel(Composite parent) {
 162
 163                 parent.setLayout(CmsUtils.noSpaceGridLayout(new GridLayout(2, false)));
 164
 165                 // Text Area for the filter
 166                 parentPathTxt = new Text(parent, SWT.NO_FOCUS);
 167                 parentPathTxt.setEditable(false);
 168                 filterTxt = new Text(parent, SWT.SEARCH | SWT.ICON_CANCEL);
 169                 filterTxt.setMessage("Filter current list");
 170                 filterTxt.setLayoutData(CmsUtils.fillWidth());
 171                 filterTxt.addModifyListener(new ModifyListener() {
 172                         private static final long serialVersionUID = 7709303319740056286L;
 173
 174                         public void modifyText(ModifyEvent event) {
 175                                 modifyFilter(false);
 176                         }
 177                 });
 178
 179                 filterTxt.addKeyListener(new KeyListener() {
 180                         private static final long serialVersionUID = -4523394262771183968L;
 181
 182                         @Override
 183                         public void keyReleased(KeyEvent e) {
 184                         }
 185
 186                         @Override
 187                         public void keyPressed(KeyEvent e) {
 188                                 boolean shiftPressed = (e.stateMask & SWT.SHIFT) != 0;
 189                                 // boolean altPressed = (e.stateMask & SWT.ALT) != 0;
 190                                 FilterEntitiesVirtualTable currTable = null;
 191                                 if (currEdited != null) {
 192                                         FilterEntitiesVirtualTable table = browserCols
 193                                                         .get(getPath(currEdited));
 194                                         if (table != null && !table.isDisposed())
 195                                                 currTable = table;
 196                                 }
 197
 198                                 try {
 199                                         if (e.keyCode == SWT.ARROW_DOWN)
 200                                                 currTable.setFocus();
 201                                         else if (e.keyCode == SWT.BS) {
 202                                                 if (filterTxt.getText().equals("")
 203                                                                 && !(getPath(currEdited).equals("/") || getPath(
 204                                                                                 currEdited).equals(initialPath))) {
 205                                                         setEdited(currEdited.getParent());
 206                                                         e.doit = false;
 207                                                         filterTxt.setFocus();
 208                                                 }
 209                                         } else if (e.keyCode == SWT.TAB && !shiftPressed) {
 210                                                 if (currEdited.getNodes(filterTxt.getText() + "*")
 211                                                                 .getSize() == 1) {
 212                                                         setEdited(currEdited.getNodes(
 213                                                                         filterTxt.getText() + "*").nextNode());
 214                                                 }
 215                                                 filterTxt.setFocus();
 216                                                 e.doit = false;
 217                                         }
 218                                 } catch (RepositoryException e1) {
 219                                         throw new ArgeoException(
 220                                                         "Unexpected error in key management for "
 221                                                                         + currEdited + "with filter "
 222                                                                         + filterTxt.getText(), e1);
 223                                 }
 224
 225                         }
 226                 });
 227         }
 228
 229         private void setEdited(Node node) {
 230                 try {
 231                         currEdited = node;
 232                         CmsUtils.clear(nodeDisplayParent);
 233                         createNodeView(nodeDisplayParent, currEdited);
 234                         nodeDisplayParent.layout();
 235                         refreshFilters(node);
 236                         refreshBrowser(node);
 237                 } catch (RepositoryException re) {
 238                         throw new ArgeoException("Unable to update browser for " + node, re);
 239                 }
 240         }
 241
 242         private void refreshFilters(Node node) throws RepositoryException {
 243                 String currNodePath = node.getPath();
 244                 parentPathTxt.setText(currNodePath);
 245                 filterTxt.setText("");
 246                 filterTxt.getParent().layout();
 247         }
 248
 249         private void refreshBrowser(Node node) throws RepositoryException {
 250
 251                 // Retrieve
 252                 String currNodePath = node.getPath();
 253                 String currParPath = "";
 254                 if (!"/".equals(currNodePath))
 255                         currParPath = JcrUtils.parentPath(currNodePath);
 256                 if ("".equals(currParPath))
 257                         currParPath = "/";
 258
 259                 Object[][] colMatrix = new Object[browserCols.size()][2];
 260
 261                 int i = 0, j = -1, k = -1;
 262                 for (String path : browserCols.keySet()) {
 263                         colMatrix[i][0] = path;
 264                         colMatrix[i][1] = browserCols.get(path);
 265                         if (j >= 0 && k < 0 && !currNodePath.equals("/")) {
 266                                 boolean leaveOpened = path.startsWith(currNodePath);
 267
 268                                 // workaround for same name siblings
 269                                 // fix me weird side effect when we go left or click on anb already selected, unfocused node
 270                                 if (leaveOpened
 271                                                 && (path.lastIndexOf("/") == 0
 272                                                                 && currNodePath.lastIndexOf("/") == 0 || JcrUtils
 273                                                                 .parentPath(path).equals(
 274                                                                                 JcrUtils.parentPath(currNodePath))))
 275                                         leaveOpened = JcrUtils.lastPathElement(path).equals(
 276                                                         JcrUtils.lastPathElement(currNodePath));
 277
 278                                 if (!leaveOpened)
 279                                         k = i;
 280                         }
 281                         if (currParPath.equals(path))
 282                                 j = i;
 283                         i++;
 284                 }
 285
 286                 if (j >= 0 && k >= 0)
 287                         // remove useless cols
 288                         for (int l = i - 1; l >= k; l--) {
 289                                 browserCols.remove(colMatrix[l][0]);
 290                                 ((FilterEntitiesVirtualTable) colMatrix[l][1]).dispose();
 291                         }
 292
 293                 if (!browserCols.containsKey(currNodePath))
 294                         createBrowserColumn(colViewer, node);
 295
 296                 colViewer.setLayout(CmsUtils.noSpaceGridLayout(new GridLayout(
 297                                 browserCols.size(), false)));
 298                 // colViewer.pack();
 299                 colViewer.layout();
 300                 // also resize the scrolled composite
 301                 scrolledCmp.layout();
 302                 scrolledCmp.getShowFocusedControl();
 303                 // colViewer.getParent().layout();
 304                 // if (JcrUtils.parentPath(currNodePath).equals(currBrowserKey)) {
 305                 // } else {
 306                 // }
 307         }
 308
 309         private void modifyFilter(boolean fromOutside) {
 310                 if (!fromOutside)
 311                         if (currEdited != null) {
 312                                 String filter = filterTxt.getText() + "*";
 313                                 FilterEntitiesVirtualTable table = browserCols
 314                                                 .get(getPath(currEdited));
 315                                 if (table != null && !table.isDisposed())
 316                                         table.filterList(filter);
 317                         }
 318
 319         }
 320
 321         private String getPath(Node node) {
 322                 try {
 323                         return node.getPath();
 324                 } catch (RepositoryException e) {
 325                         throw new ArgeoException("Unable to get path for node " + node, e);
 326                 }
 327         }
 328
 329         private Point imageWidth = new Point(250, 0);
 330
 331         private Control createNodeView(Composite parent, Node context)
 332                         throws RepositoryException {
 333
 334                 parent.setLayout(new GridLayout(2, false));
 335
 336                 if (isImg(context)) {
 337                         EditableImage image = new Img(parent, RIGHT, context, imageWidth);
 338                         image.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, true,
 339                                         false, 2, 1));
 340                 }
 341
 342                 // Name and primary type
 343                 Label contextL = new Label(parent, SWT.NONE);
 344                 contextL.setData(RWT.MARKUP_ENABLED, true);
 345                 contextL.setText("<b>" + context.getName() + "</b>");
 346                 new Label(parent, SWT.NONE).setText(context.getPrimaryNodeType()
 347                                 .getName());
 348
 349                 // Children
 350                 for (NodeIterator nIt = context.getNodes(); nIt.hasNext();) {
 351                         Node child = nIt.nextNode();
 352                         new CmsLink(child.getName(), BROWSE_PREFIX + child.getPath())
 353                                         .createUi(parent, context);
 354                         new Label(parent, SWT.NONE).setText(child.getPrimaryNodeType()
 355                                         .getName());
 356                 }
 357
 358                 // Properties
 359                 for (PropertyIterator pIt = context.getProperties(); pIt.hasNext();) {
 360                         Property property = pIt.nextProperty();
 361                         Label label = new Label(parent, SWT.NONE);
 362                         label.setText(property.getName());
 363                         label.setToolTipText(JcrUtils
 364                                         .getPropertyDefinitionAsString(property));
 365                         new Label(parent, SWT.NONE).setText(getPropAsString(property));
 366                 }
 367
 368                 return null;
 369         }
 370
 371         private boolean isImg(Node node) throws RepositoryException {
 372                 return node.hasNode(JCR_CONTENT) && node.isNodeType(CmsTypes.CMS_IMAGE);
 373         }
 374
 375         private String getPropAsString(Property property)
 376                         throws RepositoryException {
 377                 String result = "";
 378                 if (property.isMultiple()) {
 379                         result = getMultiAsString(property, ", ");
 380                 } else {
 381                         Value value = property.getValue();
 382                         if (value.getType() == PropertyType.BINARY)
 383                                 result = "<binary>";
 384                         else if (value.getType() == PropertyType.DATE)
 385                                 result = timeFormatter.format(value.getDate().getTime());
 386                         else
 387                                 result = value.getString();
 388                 }
 389                 return result;
 390         }
 391
 392         private String getMultiAsString(Property property, String separator)
 393                         throws RepositoryException {
 394                 if (separator == null)
 395                         separator = "; ";
 396                 Value[] values = property.getValues();
 397                 StringBuilder builder = new StringBuilder();
 398                 for (Value val : values) {
 399                         String currStr = val.getString();
 400                         if (!"".equals(currStr.trim()))
 401                                 builder.append(currStr).append(separator);
 402                 }
 403                 if (builder.lastIndexOf(separator) >= 0)
 404                         return builder.substring(0, builder.length() - separator.length());
 405                 else
 406                         return builder.toString();
 407         }
 408
 409         /** Almost canonical implementation of a table that display entities */
 410         private class FilterEntitiesVirtualTable extends Composite {
 411                 private static final long serialVersionUID = 8798147431706283824L;
 412
 413                 // Context
 414                 private Node context;
 415
 416                 // UI Objects
 417                 private TableViewer entityViewer;
 418
 419                 // enable management of multiple columns
 420                 Node getNode() {
 421                         return context;
 422                 }
 423
 424                 @Override
 425                 public boolean setFocus() {
 426                         if (entityViewer.getTable().isDisposed())
 427                                 return false;
 428                         if (entityViewer.getSelection().isEmpty()) {
 429                                 Object first = entityViewer.getElementAt(0);
 430                                 if (first != null) {
 431                                         entityViewer.setSelection(new StructuredSelection(first),
 432                                                         true);
 433                                 }
 434                         }
 435                         return entityViewer.getTable().setFocus();
 436                 }
 437
 438                 void filterList(String filter) {
 439                         try {
 440                                 NodeIterator nit = context.getNodes(filter);
 441                                 refreshFilteredList(nit);
 442                         } catch (RepositoryException e) {
 443                                 throw new ArgeoException("Unable to filter " + getNode()
 444                                                 + " children with filter " + filter, e);
 445                         }
 446
 447                 }
 448
 449                 public FilterEntitiesVirtualTable(Composite parent, int style,
 450                                 Node context) {
 451                         super(parent, SWT.NO_FOCUS);
 452                         this.context = context;
 453                         populate();
 454                 }
 455
 456                 protected void populate() {
 457                         Composite parent = this;
 458                         GridLayout layout = CmsUtils.noSpaceGridLayout();
 459
 460                         this.setLayout(layout);
 461                         createTableViewer(parent);
 462                 }
 463
 464                 private void createTableViewer(final Composite parent) {
 465                         // the list
 466                         // We must limit the size of the table otherwise the full list is
 467                         // loaded
 468                         // before the layout happens
 469                         Composite listCmp = new Composite(parent, SWT.NO_FOCUS);
 470                         GridData gd = new GridData(SWT.LEFT, SWT.FILL, false, true);
 471                         gd.widthHint = COLUMN_WIDTH;
 472                         listCmp.setLayoutData(gd);
 473                         listCmp.setLayout(CmsUtils.noSpaceGridLayout());
 474
 475                         entityViewer = new TableViewer(listCmp, SWT.VIRTUAL | SWT.SINGLE);
 476                         Table table = entityViewer.getTable();
 477
 478                         table.setLayoutData(CmsUtils.fillAll());
 479                         table.setLinesVisible(true);
 480                         table.setHeaderVisible(false);
 481                         table.setData(RWT.MARKUP_ENABLED, Boolean.TRUE);
 482
 483                         CmsUtils.style(table, MaintenanceStyles.BROWSER_COLUMN);
 484
 485                         // first column
 486                         TableViewerColumn column = new TableViewerColumn(entityViewer,
 487                                         SWT.NONE);
 488                         TableColumn tcol = column.getColumn();
 489                         tcol.setWidth(COLUMN_WIDTH);
 490                         tcol.setResizable(true);
 491                         column.setLabelProvider(new SimpleNameLP());
 492
 493                         entityViewer.setContentProvider(new MyLazyCP(entityViewer));
 494                         entityViewer
 495                                         .addSelectionChangedListener(new ISelectionChangedListener() {
 496
 497                                                 @Override
 498                                                 public void selectionChanged(SelectionChangedEvent event) {
 499                                                         IStructuredSelection selection = (IStructuredSelection) entityViewer
 500                                                                         .getSelection();
 501                                                         if (selection.isEmpty())
 502                                                                 return;
 503                                                         else
 504                                                                 setEdited((Node) selection.getFirstElement());
 505
 506                                                 }
 507                                         });
 508
 509                         table.addKeyListener(new KeyListener() {
 510                                 private static final long serialVersionUID = -330694313896036230L;
 511
 512                                 @Override
 513                                 public void keyReleased(KeyEvent e) {
 514                                 }
 515
 516                                 @Override
 517                                 public void keyPressed(KeyEvent e) {
 518
 519                                         IStructuredSelection selection = (IStructuredSelection) entityViewer
 520                                                         .getSelection();
 521                                         Node selected = null;
 522                                         if (!selection.isEmpty())
 523                                                 selected = ((Node) selection.getFirstElement());
 524                                         try {
 525                                                 if (e.keyCode == SWT.ARROW_RIGHT) {
 526                                                         if (selected != null) {
 527                                                                 setEdited(selected);
 528                                                                 browserCols.get(selected.getPath()).setFocus();
 529                                                         }
 530                                                 } else if (e.keyCode == SWT.ARROW_LEFT) {
 531                                                         try {
 532                                                                 selected = getNode().getParent();
 533                                                                 String newPath = selected.getPath(); //getNode().getParent()
 534                                                                 setEdited(selected);
 535                                                                 if (browserCols.containsKey(newPath))
 536                                                                         browserCols.get(newPath).setFocus();
 537                                                         } catch (ItemNotFoundException ie) {
 538                                                                 // root silent
 539                                                         }
 540                                                 }
 541                                         } catch (RepositoryException ie) {
 542                                                 throw new ArgeoException("Error while managing arrow "
 543                                                                 + "events in the browser for " + selected, ie);
 544                                         }
 545                                 }
 546                         });
 547                 }
 548
 549                 private class MyLazyCP implements ILazyContentProvider {
 550                         private static final long serialVersionUID = 1L;
 551                         private TableViewer viewer;
 552                         private Object[] elements;
 553
 554                         public MyLazyCP(TableViewer viewer) {
 555                                 this.viewer = viewer;
 556                         }
 557
 558                         public void dispose() {
 559                         }
 560
 561                         public void inputChanged(Viewer viewer, Object oldInput,
 562                                         Object newInput) {
 563                                 // IMPORTANT: don't forget this: an exception will be thrown if
 564                                 // a selected object is not part of the results anymore.
 565                                 viewer.setSelection(null);
 566                                 this.elements = (Object[]) newInput;
 567                         }
 568
 569                         public void updateElement(int index) {
 570                                 viewer.replace(elements[index], index);
 571                         }
 572                 }
 573
 574                 protected void refreshFilteredList(NodeIterator children) {
 575                         Object[] rows = JcrUtils.nodeIteratorToList(children).toArray();
 576                         entityViewer.setInput(rows);
 577                         entityViewer.setItemCount(rows.length);
 578                         entityViewer.refresh();
 579                 }
 580
 581                 public class SimpleNameLP extends ColumnLabelProvider {
 582                         private static final long serialVersionUID = 2465059387875338553L;
 583
 584                         @Override
 585                         public String getText(Object element) {
 586                                 if (element instanceof Node) {
 587                                         Node curr = ((Node) element);
 588                                         try {
 589                                                 return curr.getName();
 590                                         } catch (RepositoryException e) {
 591                                                 throw new ArgeoException("Unable to get name for"
 592                                                                 + curr);
 593                                         }
 594                                 }
 595                                 return super.getText(element);
 596                         }
 597                 }
 598         }
 599 }