gerrit.simantics Code Review - simantics/district.git/blob

   1 package org.simantics.district.selection.ui;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.Collections;
   6 import java.util.List;
   7
   8 import org.eclipse.e4.ui.workbench.modeling.ESelectionService;
   9 import org.eclipse.jface.viewers.ColumnLabelProvider;
  10 import org.eclipse.jface.viewers.ColumnViewerToolTipSupport;
  11 import org.eclipse.jface.viewers.DoubleClickEvent;
  12 import org.eclipse.jface.viewers.IDoubleClickListener;
  13 import org.eclipse.jface.viewers.IStructuredSelection;
  14 import org.eclipse.jface.viewers.ITreeContentProvider;
  15 import org.eclipse.jface.viewers.StructuredSelection;
  16 import org.eclipse.jface.viewers.TreeSelection;
  17 import org.eclipse.jface.viewers.TreeViewer;
  18 import org.eclipse.jface.viewers.TreeViewerColumn;
  19 import org.eclipse.jface.viewers.Viewer;
  20 import org.eclipse.swt.SWT;
  21 import org.eclipse.swt.graphics.Image;
  22 import org.eclipse.swt.layout.FillLayout;
  23 import org.eclipse.swt.widgets.Composite;
  24 import org.eclipse.swt.widgets.Tree;
  25 import org.simantics.Simantics;
  26 import org.simantics.browsing.ui.common.AdaptableHintContext;
  27 import org.simantics.db.ReadGraph;
  28 import org.simantics.db.Resource;
  29 import org.simantics.db.common.procedure.adapter.SyncListenerAdapter;
  30 import org.simantics.db.common.request.ResourceRead;
  31 import org.simantics.db.exception.DatabaseException;
  32 import org.simantics.db.layer0.QueryIndexUtils;
  33 import org.simantics.db.layer0.SelectionHints;
  34 import org.simantics.db.layer0.request.ActiveModels;
  35 import org.simantics.db.layer0.variable.Variable;
  36 import org.simantics.db.request.Read;
  37 import org.simantics.district.network.ui.DistrictNetworkUIUtil;
  38 import org.simantics.district.selection.ElementSelectionResource;
  39 import org.simantics.district.selection.ElementSelector;
  40 import org.simantics.district.selection.ElementSelector.DiagramGenerator;
  41 import org.simantics.layer0.Layer0;
  42 import org.simantics.scl.runtime.Lists;
  43 import org.simantics.scl.runtime.function.FunctionImpl1;
  44 import org.simantics.ui.selection.AnyResource;
  45 import org.simantics.ui.selection.AnyVariable;
  46 import org.simantics.ui.selection.WorkbenchSelectionContentType;
  47 import org.slf4j.Logger;
  48 import org.slf4j.LoggerFactory;
  49
  50 public class ElementSelectorTableUI extends Composite {
  51
  52         private static final Logger LOGGER = LoggerFactory.getLogger(ElementSelectorTableUI.class);
  53
  54         private TreeViewer viewer;
  55         private TreeViewerColumn column1;
  56         private TreeViewerColumn column2;
  57
  58         public ElementSelectorTableUI(ESelectionService selectionService, Composite parent, int style) {
  59                 super(parent, style);
  60                 parent.setLayout(new FillLayout());
  61                 //        GridDataFactory.fillDefaults().grab(true, true).applyTo(this);
  62                 //        GridLayoutFactory.fillDefaults().numColumns(1).applyTo(this);
  63                 this.setLayout(new FillLayout());
  64
  65                 viewer = new TreeViewer(this, SWT.FULL_SELECTION);
  66                 viewer.addDoubleClickListener(new DoubleClickListener(selectionService));
  67
  68                 viewer.setContentProvider(new ITreeContentProvider() {
  69                         @Override
  70                         public boolean hasChildren(Object element) {
  71                                 return false;
  72                         }
  73
  74                         @Override
  75                         public Object getParent(Object element) {
  76                                 return null;
  77                         }
  78
  79                         @Override
  80                         public Object[] getElements(Object inputElement) {
  81                                 if (inputElement == null || !(inputElement instanceof Collection))
  82                                         return new Object[0];
  83
  84                                 return ((Collection<?>)inputElement).toArray();
  85                         }
  86
  87                         @Override
  88                         public Object[] getChildren(Object parentElement) {
  89                                 return null;
  90                         }
  91
  92                         @Override
  93                         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  94                                 ITreeContentProvider.super.inputChanged(viewer, oldInput, newInput);
  95                         }
  96                 });
  97
  98                 Simantics.getSession().asyncRequest(new SelectionsRequest(), new SyncListenerAdapter<Collection<ElementSelector>>() {
  99                         public void execute(ReadGraph graph, Collection<ElementSelector> result) {
 100                                 parent.getDisplay().asyncExec(() -> {
 101                                         viewer.setInput(result);
 102                                 });
 103                         }
 104
 105                         @Override
 106                         public void exception(ReadGraph graph, Throwable t) throws DatabaseException {
 107                                 LOGGER.error("Error getting element selector list", t);
 108                         }
 109
 110                         @Override
 111                         public boolean isDisposed() {
 112                                 return ElementSelectorTableUI.this.isDisposed();
 113                         }
 114                 });
 115
 116                 ColumnViewerToolTipSupport.enableFor(viewer);
 117
 118                 Tree table = viewer.getTree();
 119                 table.setHeaderVisible(true);
 120                 table.setLinesVisible(true);
 121
 122                 column1 = new TreeViewerColumn(viewer, SWT.NONE);
 123                 column1.getColumn().setText("Name");
 124                 column1.getColumn().setWidth(200);
 125                 column1.getColumn().setResizable(true);
 126                 column1.setLabelProvider(new ColumnLabelProvider() {
 127                         @Override
 128                         public String getText(Object element) {
 129                                 ElementSelector selector = (ElementSelector) element;
 130                                 return selector.getName();
 131                         }
 132
 133                         @Override
 134                         public Image getImage(Object element) {
 135                                 return null;
 136                         }
 137                 });
 138
 139                 column2 = new TreeViewerColumn(viewer, SWT.NONE);
 140                 column2.getColumn().setText("Query");
 141                 column2.getColumn().setWidth(600);
 142                 column2.getColumn().setResizable(true);
 143                 column2.setLabelProvider(new ColumnLabelProvider() {
 144                         @Override
 145                         public String getText(Object element) {
 146                                 ElementSelector selector = (ElementSelector) element;
 147                                 return selector.getExpression();
 148                         }
 149
 150                         @Override
 151                         public Image getImage(Object element) {
 152                                 return null;
 153                         }
 154                 });
 155         }
 156
 157         public Tree getTree() {
 158                 return viewer.getTree();
 159         }
 160
 161         public ElementSelector getSelectedItem() {
 162                 IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
 163                 return selection != null ? (ElementSelector) selection.getFirstElement() : null;
 164         }
 165
 166         private static final class SelectionElement extends AdaptableHintContext {
 167                 private SelectionElement(Key[] keys) {
 168                         super(keys);
 169                 }
 170
 171                 @SuppressWarnings("unchecked")
 172                 public <T> T getContent(WorkbenchSelectionContentType<T> contentType) {
 173                         Resource element = getHint(SelectionHints.KEY_MAIN);
 174                         if (contentType instanceof AnyResource) {
 175                                 return (T)element;
 176                         }
 177                         else if (contentType instanceof AnyVariable) {
 178                                 try {
 179                                         return (T) Simantics.getSession().syncRequest(new ResourceRead<Variable>(element) {
 180                                                 public Variable perform(ReadGraph graph) throws DatabaseException {
 181                                                         return ElementSelector.getVariableForElement(graph, resource);
 182                                                 }
 183                                         });
 184                                 } catch (DatabaseException e) {
 185                                         return null;
 186                                 }
 187                         }
 188
 189                         return null;
 190                 }
 191         }
 192
 193         public static final class SelectionsRequest implements Read<Collection<ElementSelector>> {
 194                 @Override
 195                 public Collection<ElementSelector> perform(ReadGraph graph) throws DatabaseException {
 196                         Layer0 L0 = Layer0.getInstance(graph);
 197                         ElementSelectionResource ES = ElementSelectionResource.getInstance(graph);
 198
 199                         Resource model = ActiveModels.getPossibleActiveModel(graph, Simantics.getProjectResource());
 200                         if (model == null) {
 201                                 return Collections.emptyList();
 202                         }
 203
 204                         List<Resource> libs = QueryIndexUtils.searchByType(graph, model, ES.SelectionLibrary);
 205                         if (libs.isEmpty())
 206                                 return Collections.emptyList();
 207
 208                         Resource lib = libs.get(0);
 209
 210                         List<ElementSelector> result = new ArrayList<>();
 211                         for (Resource selection : graph.getObjects(lib, L0.ConsistsOf)) {
 212                                 if (!graph.isInstanceOf(selection, ES.Selection))
 213                                         continue;
 214
 215                                 result.add(ElementSelector.getSelector(graph, selection));
 216                         }
 217
 218                         return result;
 219                 }
 220         }
 221
 222         private static final class DoubleClickListener implements IDoubleClickListener {
 223                 private final ESelectionService selectionService;
 224                 private Resource model;
 225
 226                 private DoubleClickListener(ESelectionService selectionService) {
 227                         this.selectionService = selectionService;
 228                 }
 229
 230                 @Override
 231                 public void doubleClick(DoubleClickEvent event) {
 232                         TreeSelection selection = (TreeSelection) event.getViewer().getSelection();
 233                         ElementSelector query = (ElementSelector) selection.getFirstElement();
 234                         try {
 235                                 List<Resource> result = Simantics.getSession().syncRequest(new Read<List<Resource>>() {
 236                                         @Override
 237                                         public List<Resource> perform(ReadGraph graph) throws DatabaseException {
 238                                                 model = ActiveModels.getPossibleActiveModel(graph, Simantics.getProjectResource());
 239                                                 if (model == null) {
 240                                                         LOGGER.warn("No active model");
 241                                                         return Collections.emptyList();
 242                                                 }
 243
 244                                                 return query.selectElementsFrom(graph, model);
 245                                         }
 246                                 });
 247
 248                                 if (query.getGenerator() instanceof DiagramGenerator) {
 249                                         DistrictNetworkUIUtil.openDNDiagramWithSelection(event.getViewer().getControl().getDisplay(), result);
 250                                 }
 251                                 else {
 252                                         selectionService.setPostSelection(new StructuredSelection(Lists.map(new FunctionImpl1<Resource, AdaptableHintContext>() {
 253                                                 public AdaptableHintContext apply(Resource p0) {
 254                                                         AdaptableHintContext selectionElement = new SelectionElement(SelectionHints.STD_KEYS);
 255                                                         selectionElement.setHint(SelectionHints.KEY_MAIN, p0);
 256                                                         selectionElement.setHint(SelectionHints.KEY_MODEL, model);
 257                                                         return selectionElement;
 258                                                 }
 259                                         }, result)));
 260                                 }
 261                         } catch (DatabaseException e) {
 262                                 LOGGER.error("Element selection query failed", e);
 263                         }
 264                 }
 265         }
 266 }