bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/scl/expressions/SCLExpressionView.java

   1 package org.simantics.modeling.ui.scl.expressions;
   2
   3 import java.util.Collection;
   4
   5 import org.eclipse.core.runtime.IProgressMonitor;
   6 import org.eclipse.core.runtime.IStatus;
   7 import org.eclipse.core.runtime.Status;
   8 import org.eclipse.core.runtime.jobs.Job;
   9 import org.eclipse.jface.action.Action;
  10 import org.eclipse.jface.action.IAction;
  11 import org.eclipse.jface.layout.GridDataFactory;
  12 import org.eclipse.jface.layout.TableColumnLayout;
  13 import org.eclipse.jface.resource.ImageRegistry;
  14 import org.eclipse.jface.viewers.ArrayContentProvider;
  15 import org.eclipse.jface.viewers.ColumnLabelProvider;
  16 import org.eclipse.jface.viewers.ColumnViewerToolTipSupport;
  17 import org.eclipse.jface.viewers.ColumnWeightData;
  18 import org.eclipse.jface.viewers.DoubleClickEvent;
  19 import org.eclipse.jface.viewers.IDoubleClickListener;
  20 import org.eclipse.jface.viewers.IStructuredContentProvider;
  21 import org.eclipse.jface.viewers.IStructuredSelection;
  22 import org.eclipse.jface.viewers.StructuredSelection;
  23 import org.eclipse.jface.viewers.TableViewer;
  24 import org.eclipse.jface.viewers.TableViewerColumn;
  25 import org.eclipse.swt.SWT;
  26 import org.eclipse.swt.events.KeyAdapter;
  27 import org.eclipse.swt.events.KeyEvent;
  28 import org.eclipse.swt.layout.GridLayout;
  29 import org.eclipse.swt.widgets.Composite;
  30 import org.eclipse.swt.widgets.Shell;
  31 import org.eclipse.swt.widgets.Table;
  32 import org.eclipse.swt.widgets.Text;
  33 import org.eclipse.ui.IMemento;
  34 import org.eclipse.ui.IViewSite;
  35 import org.eclipse.ui.PartInitException;
  36 import org.eclipse.ui.part.ViewPart;
  37 import org.simantics.DatabaseJob;
  38 import org.simantics.Simantics;
  39 import org.simantics.db.Resource;
  40 import org.simantics.db.exception.DatabaseException;
  41 import org.simantics.modeling.ui.Activator;
  42 import org.simantics.scl.db.SCLExpressionTableEntry;
  43 import org.simantics.scl.db.UsedSCLExpressionsRequest;
  44 import org.simantics.ui.workbench.action.DefaultActions;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 public class SCLExpressionView extends ViewPart {
  49
  50     private static final Logger LOGGER = LoggerFactory.getLogger(SCLExpressionView.class);
  51
  52     private TableViewer tableViewer;
  53     private TableViewerColumn expressionColumn;
  54     private TableViewerColumn locationColumn;
  55
  56     private ImageRegistry imageRegistry;
  57     private IStructuredContentProvider expressionContentProvider;
  58     private SCLExpressionItemFilter expressionFilter;
  59
  60     public SCLExpressionView() {
  61         imageRegistry = Activator.getDefault().getImageRegistry();
  62         expressionContentProvider = ArrayContentProvider.getInstance();
  63     }
  64
  65     @Override
  66     public void init(IViewSite site, IMemento memento) throws PartInitException {
  67         super.init(site, memento);
  68         IAction action = new Action("Refresh") {
  69             @Override
  70             public void run() {
  71                 scheduleUpdateEntries();
  72             }
  73         };
  74         action.setImageDescriptor(imageRegistry.getDescriptor("arrow_refresh"));
  75         site.getActionBars().getToolBarManager().add(action);
  76     }
  77
  78     private void createFilter(Composite parent) {
  79         expressionFilter = new SCLExpressionItemFilter();
  80
  81         Text searchText = new Text(parent, SWT.BORDER | SWT.SEARCH);
  82         GridDataFactory.fillDefaults().grab(true, false).applyTo(searchText);
  83         searchText.addKeyListener(new KeyAdapter() {
  84
  85             @Override
  86             public void keyReleased(KeyEvent e) {
  87                 expressionFilter.setSearchText(searchText.getText());
  88                 tableViewer.refresh();
  89             }
  90         });
  91     }
  92
  93     @Override
  94     public void createPartControl(Composite parent) {
  95         parent.setLayout(new GridLayout(1, false));
  96         GridDataFactory.fillDefaults().grab(true, true).applyTo(parent);
  97         createFilter(parent);
  98
  99         Composite tableParent = new Composite(parent, SWT.NONE);
 100         GridDataFactory.fillDefaults().grab(true, true).applyTo(tableParent);
 101
 102         tableViewer = new TableViewer(tableParent,
 103                 SWT.FULL_SELECTION | SWT.SINGLE | SWT.V_SCROLL | SWT.H_SCROLL | SWT.VIRTUAL);
 104         ColumnViewerToolTipSupport.enableFor(tableViewer);
 105         tableViewer.setContentProvider(expressionContentProvider);
 106         tableViewer.addFilter(expressionFilter);
 107
 108         Table table = tableViewer.getTable();
 109         table.setHeaderVisible(true);
 110         table.setLinesVisible(true);
 111
 112         TableColumnLayout layout = new TableColumnLayout();
 113         tableParent.setLayout(layout);
 114
 115         expressionColumn = new TableViewerColumn(tableViewer, SWT.NONE);
 116         expressionColumn.getColumn().setText("Expression");
 117         expressionColumn.getColumn().setResizable(true);
 118         expressionColumn.setLabelProvider(new ColumnLabelProvider() {
 119             @Override
 120             public String getText(Object element) {
 121                 SCLExpressionTableEntry entry = (SCLExpressionTableEntry) element;
 122                 return entry.getContent();
 123             }
 124         });
 125
 126         layout.setColumnData(expressionColumn.getColumn(), new ColumnWeightData(100));
 127
 128         locationColumn = new TableViewerColumn(tableViewer, SWT.NONE);
 129         locationColumn.getColumn().setText("Location");
 130         locationColumn.getColumn().setResizable(false);
 131         locationColumn.setLabelProvider(new ColumnLabelProvider() {
 132             @Override
 133             public String getText(Object element) {
 134                 SCLExpressionTableEntry entry = (SCLExpressionTableEntry) element;
 135                 if (entry.getLocation() != null)
 136                     return entry.getLocation();
 137                 return "null";
 138             }
 139         });
 140
 141         layout.setColumnData(locationColumn.getColumn(), new ColumnWeightData(100));
 142         tableViewer.addDoubleClickListener(new IDoubleClickListener() {
 143             @Override
 144             public void doubleClick(DoubleClickEvent event) {
 145                 IStructuredSelection selection = (IStructuredSelection) event.getSelection();
 146                 SCLExpressionTableEntry entry = (SCLExpressionTableEntry) selection.getFirstElement();
 147
 148                 openResource(tableViewer.getControl().getDisplay().getActiveShell(), entry.getResource());
 149             }
 150         });
 151         scheduleUpdateEntries();
 152     }
 153
 154     private void scheduleUpdateEntries() {
 155         Job updateJob = new DatabaseJob("Update used SCL expressions") {
 156
 157             @Override
 158             protected IStatus run(IProgressMonitor monitor) {
 159                 try {
 160                     Collection<SCLExpressionTableEntry> result = Simantics.getSession()
 161                             .syncRequest(new UsedSCLExpressionsRequest());
 162                     tableViewer.getTable().getDisplay().asyncExec(() -> {
 163                         tableViewer.setInput(result);
 164                     });
 165                     return Status.OK_STATUS;
 166                 } catch (DatabaseException e) {
 167                     LOGGER.error("Could not update SCL expressions", e);
 168                     return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Could not update SCL expressions", e);
 169                 }
 170             }
 171         };
 172         updateJob.schedule();
 173     }
 174
 175     private static void openResource(Shell shell, Resource resource) {
 176         DefaultActions.performDefaultAction(shell, new StructuredSelection(resource));
 177     }
 178
 179     @Override
 180     public void setFocus() {
 181         tableViewer.getControl().setFocus();
 182     }
 183
 184     @Override
 185     public void dispose() {
 186         super.dispose();
 187     }
 188
 189 }