bundles/org.simantics.views.swt.client/src/org/simantics/views/swt/client/impl/SWTBrowser.java

   1 package org.simantics.views.swt.client.impl;
   2
   3 import org.eclipse.jface.layout.GridDataFactory;
   4 import org.eclipse.jface.layout.GridLayoutFactory;
   5 import org.eclipse.swt.browser.Browser;
   6 import org.eclipse.swt.browser.LocationEvent;
   7 import org.eclipse.swt.browser.LocationListener;
   8 import org.eclipse.swt.widgets.Composite;
   9 import org.simantics.db.layer0.variable.Variable;
  10 import org.simantics.scl.runtime.function.Function1;
  11 import org.simantics.utils.datastructures.map.Tuple;
  12 import org.simantics.views.swt.client.base.SingleSWTViewNode;
  13
  14 public class SWTBrowser extends SingleSWTViewNode<Browser> {
  15
  16         private static final long serialVersionUID = -2704760050046054447L;
  17
  18         public String                     document;
  19         public Variable                   variable;
  20         public Function1<Object, Boolean> locationChanging;
  21
  22         private Tuple                     lastAppliedParametrization;
  23
  24         @Override
  25         public void reset() {
  26                 super.reset();
  27                 lastAppliedParametrization = null;
  28         }
  29
  30         @Override
  31         public void createControls(Composite parent) {
  32
  33                 GridDataFactory.fillDefaults().grab(true, true).applyTo(parent);
  34                 GridLayoutFactory.fillDefaults().applyTo(parent);
  35
  36                 control = new Browser(parent, style);
  37                 GridDataFactory.fillDefaults().grab(true, true).applyTo(control);
  38
  39                 control.addLocationListener(new LocationListener() {
  40                         @Override
  41                         public void changing(LocationEvent event) {
  42                                 Function1<Object, Boolean> lc = locationChanging;
  43                                 if (lc != null)
  44                                         lc.apply(event);
  45                         }
  46                         @Override
  47                         public void changed(LocationEvent event) {
  48                         }
  49                 });
  50
  51                 setProperties();
  52
  53         }
  54
  55         public void synchronizeVariable(Variable variable) {
  56
  57         }
  58
  59         public void synchronizeDocument(final String document) {
  60
  61                 if(document != null) {
  62
  63                         final Variable variable = SWTBrowser.this.variable;
  64                         if (variable == null) {
  65                                 return;
  66                         }
  67
  68                         Tuple checkParam = new Tuple(document, variable);
  69                         if (checkParam.equals(lastAppliedParametrization))
  70                                 return;
  71
  72                         lastAppliedParametrization = checkParam;
  73
  74                         final Browser control = this.control;
  75                         if (control == null)
  76                                 return;
  77                         control.setText(document);
  78
  79                 }
  80         }
  81
  82 }