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

   1 package org.simantics.district.selection.ui;
   2
   3 import java.util.Collection;
   4
   5 import org.eclipse.jface.resource.ImageDescriptor;
   6 import org.eclipse.jface.resource.JFaceResources;
   7 import org.eclipse.jface.resource.LocalResourceManager;
   8 import org.eclipse.jface.resource.ResourceManager;
   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.IStructuredContentProvider;
  14 import org.eclipse.jface.viewers.IStructuredSelection;
  15 import org.eclipse.jface.viewers.TableViewer;
  16 import org.eclipse.jface.viewers.TableViewerColumn;
  17 import org.eclipse.swt.SWT;
  18 import org.eclipse.swt.graphics.Image;
  19 import org.eclipse.swt.graphics.ImageData;
  20 import org.eclipse.swt.graphics.PaletteData;
  21 import org.eclipse.swt.graphics.RGB;
  22 import org.eclipse.swt.layout.FillLayout;
  23 import org.eclipse.swt.widgets.Composite;
  24 import org.eclipse.swt.widgets.Display;
  25 import org.eclipse.swt.widgets.Table;
  26 import org.simantics.Simantics;
  27 import org.simantics.db.ReadGraph;
  28 import org.simantics.db.common.procedure.adapter.SyncListenerAdapter;
  29 import org.simantics.db.exception.DatabaseException;
  30 import org.simantics.district.selection.ElementSelector;
  31 import org.simantics.district.selection.ui.parts.ElementSelectionView;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 public class ElementSelectorTableUI extends Composite {
  36
  37         private static final Logger LOGGER = LoggerFactory.getLogger(ElementSelectorTableUI.class);
  38
  39         private TableViewer viewer;
  40
  41         private ElementSelectionView view;
  42
  43         private ResourceManager resourceManager;
  44
  45         public ElementSelectorTableUI(Composite parent, int style, ElementSelectionView view) {
  46                 super(parent, style);
  47
  48                 resourceManager = new LocalResourceManager(JFaceResources.getResources(), this);
  49
  50                 this.view = view;
  51
  52                 parent.setLayout(new FillLayout());
  53                 //        GridDataFactory.fillDefaults().grab(true, true).applyTo(this);
  54                 //        GridLayoutFactory.fillDefaults().numColumns(1).applyTo(this);
  55                 this.setLayout(new FillLayout());
  56
  57                 viewer = createViewer();
  58                 addSelectionListener();
  59                 setContentProvider();
  60                 createSelectorListener(parent);
  61                 enableToolTips();
  62                 configureTable();
  63         }
  64
  65         public Table getTable() {
  66                 return viewer.getTable();
  67         }
  68
  69         public ElementSelector getSelectedItem() {
  70                 IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
  71                 return selection != null ? (ElementSelector) selection.getFirstElement() : null;
  72         }
  73
  74         private TableViewer createViewer() {
  75                 return new TableViewer(this, SWT.FULL_SELECTION | SWT.SINGLE);
  76         }
  77
  78         private void configureTable() {
  79                 Table table = viewer.getTable();
  80                 table.setHeaderVisible(true);
  81                 table.setLinesVisible(true);
  82
  83                 createNameColumn();
  84                 createQueryColumn();
  85         }
  86
  87         private void enableToolTips() {
  88                 ColumnViewerToolTipSupport.enableFor(viewer);
  89         }
  90
  91         private void setContentProvider() {
  92                 viewer.setContentProvider(new IStructuredContentProvider() {
  93                         @Override
  94                         public Object[] getElements(Object inputElement) {
  95                                 if (inputElement == null || !(inputElement instanceof Collection))
  96                                         return new Object[0];
  97
  98                                 return ((Collection<?>)inputElement).toArray();
  99                         }
 100                 });
 101         }
 102
 103         private TableViewerColumn createNameColumn() {
 104                 TableViewerColumn column = new TableViewerColumn(viewer, SWT.NONE);
 105                 column.getColumn().setText("Name");
 106                 column.getColumn().setWidth(200);
 107                 column.getColumn().setResizable(true);
 108                 column.setLabelProvider(new ColumnLabelProvider() {
 109                         @Override
 110                         public String getText(Object element) {
 111                                 ElementSelector selector = (ElementSelector) element;
 112                                 return " " + selector.getName();
 113                         }
 114
 115                         @Override
 116                         public Image getImage(Object element) {
 117                                 ElementSelector selector = (ElementSelector) element;
 118                                 float[] color = selector.getColor();
 119                                 if (color == null)
 120                                         return null;
 121
 122                                 RGB rgb = ElementSelectionTools.literalToColor(color).getRgb();
 123
 124                                 PaletteData paletteData = new PaletteData(new RGB[] { new RGB(255, 255, 255), rgb });
 125
 126                                 // Create image with a colored horizontal bar
 127                                 // TODO: Indicate line width
 128                                 Image image = resourceManager.createImage(ImageDescriptor.createFromImageDataProvider(zoom -> {
 129                                         int height = 8 * zoom / 100;
 130                                         int width = 40 * zoom / 100;
 131                                         ImageData imageData = new ImageData(width, height, 1, paletteData);
 132                                         for (int x = 0; x < width; x++) {
 133                                                 for (int y = 0; y < height; y++) {
 134                                                         imageData.setPixel(x, y, 1);
 135                                                 }
 136                                         }
 137
 138                                         return imageData;
 139                                 }));
 140
 141                                 return image;
 142                         }
 143                 });
 144                 return column;
 145         }
 146
 147         private TableViewerColumn createQueryColumn() {
 148                 TableViewerColumn column = new TableViewerColumn(viewer, SWT.NONE);
 149                 column.getColumn().setText("Query");
 150                 column.getColumn().setWidth(600);
 151                 column.getColumn().setResizable(true);
 152                 column.setLabelProvider(new ColumnLabelProvider() {
 153                         @Override
 154                         public String getText(Object element) {
 155                                 ElementSelector selector = (ElementSelector) element;
 156                                 return selector.getExpression();
 157                         }
 158                 });
 159                 return column;
 160         }
 161
 162         private void createSelectorListener(Composite parent) {
 163                 Simantics.getSession().asyncRequest(new ElementSelectionTools.SelectionsRequest(), new SyncListenerAdapter<Collection<ElementSelector>>() {
 164                         public void execute(ReadGraph graph, Collection<ElementSelector> result) {
 165                                 parent.getDisplay().asyncExec(() -> {
 166                                         viewer.setInput(result);
 167                                 });
 168                         }
 169
 170                         @Override
 171                         public void exception(ReadGraph graph, Throwable t) throws DatabaseException {
 172                                 LOGGER.error("Error getting element selector list", t);
 173                         }
 174
 175                         @Override
 176                         public boolean isDisposed() {
 177                                 return ElementSelectorTableUI.this.isDisposed();
 178                         }
 179                 });
 180         }
 181
 182         private void addSelectionListener() {
 183                 viewer.addDoubleClickListener(new DoubleClickListener());
 184         }
 185
 186         private final class DoubleClickListener implements IDoubleClickListener {
 187                 @Override
 188                 public void doubleClick(DoubleClickEvent event) {
 189                         IStructuredSelection selection = (IStructuredSelection) event.getViewer().getSelection();
 190                         Display display = event.getViewer().getControl().getDisplay();
 191                         ElementSelector query = (ElementSelector) selection.getFirstElement();
 192
 193                         view.performSelection(display, query);
 194                 }
 195         }
 196 }