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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2010 Association for Decentralized Information Management in\r
   3  * Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.sysdyn.ui.properties.widgets.expressions;\r
  13 \r
  14 import java.util.Arrays;\r
  15 import java.util.List;\r
  16 import java.util.Map;\r
  17 \r
  18 import org.eclipse.jface.layout.GridDataFactory;\r
  19 import org.eclipse.jface.layout.GridLayoutFactory;\r
  20 import org.eclipse.jface.text.BadLocationException;\r
  21 import org.eclipse.jface.text.IDocument;\r
  22 import org.eclipse.swt.SWT;\r
  23 import org.eclipse.swt.custom.VerifyKeyListener;\r
  24 import org.eclipse.swt.events.FocusListener;\r
  25 import org.eclipse.swt.events.KeyListener;\r
  26 import org.eclipse.swt.events.ModifyListener;\r
  27 import org.eclipse.swt.graphics.Point;\r
  28 import org.eclipse.swt.widgets.Composite;\r
  29 import org.eclipse.swt.widgets.Label;\r
  30 import org.simantics.databoard.Bindings;\r
  31 import org.simantics.db.ReadGraph;\r
  32 import org.simantics.db.Resource;\r
  33 import org.simantics.db.VirtualGraph;\r
  34 import org.simantics.db.WriteGraph;\r
  35 import org.simantics.db.common.request.WriteRequest;\r
  36 import org.simantics.db.common.utils.OrderedSetUtils;\r
  37 import org.simantics.db.exception.DatabaseException;\r
  38 import org.simantics.db.request.Read;\r
  39 import org.simantics.layer0.Layer0;\r
  40 import org.simantics.layer0.utils.direct.GraphUtils;\r
  41 import org.simantics.sysdyn.SysdynResource;\r
  42 import org.simantics.sysdyn.ui.utils.ExpressionUtils;\r
  43 import org.simantics.ui.SimanticsUI;\r
  44 \r
  45 public class BasicExpression implements IExpression {\r
  46 \r
  47     private ExpressionField expression;\r
  48     protected Resource expressionType;\r
  49 \r
  50     @Override\r
  51     public void createExpressionFields(Composite parent, Map<String, Object> data) {\r
  52         GridLayoutFactory.fillDefaults().numColumns(2).applyTo(parent);\r
  53         String equation = data.get("equation") != null ? (String)data.get("equation") : "";\r
  54 \r
  55         Label l = new Label(parent, SWT.NONE);\r
  56         l.setText("=");\r
  57 \r
  58         expression = new ExpressionField(parent, SWT.BORDER);\r
  59         expression.setExpression(equation);\r
  60         GridDataFactory.fillDefaults().grab(true, true).applyTo(expression);\r
  61 \r
  62     }\r
  63 \r
  64     @Override\r
  65     public void focus() {\r
  66         this.expression.focus();\r
  67 \r
  68     }\r
  69 \r
  70     @Override\r
  71     public List<ExpressionField> getExpressionFields() {\r
  72         return Arrays.asList(this.expression);\r
  73     }\r
  74 \r
  75     @Override\r
  76     public void readData(final Resource expression, Map<String, Object> data) {\r
  77         String equation = null;\r
  78         if (expression != null && data.get("equation") == null) {\r
  79             try {\r
  80                 equation = SimanticsUI.getSession().syncRequest(new Read<String>() {\r
  81 \r
  82                     @Override\r
  83                     public String perform(ReadGraph graph) throws DatabaseException {\r
  84                         SysdynResource sr = SysdynResource.getInstance(graph);\r
  85                         if (expression != null) {\r
  86                             String equation = graph.getPossibleRelatedValue(expression, sr.HasEquation);\r
  87                             if(equation != null)\r
  88                                 return equation;\r
  89                         }\r
  90                         \r
  91                         return "";\r
  92                         \r
  93                     }\r
  94 \r
  95                 });\r
  96             } catch (DatabaseException e1) {\r
  97                 e1.printStackTrace();\r
  98             }\r
  99             data.put("equation", equation);\r
 100         }\r
 101     }\r
 102 \r
 103     @Override\r
 104     public void replaceSelection(String var) {\r
 105         if(expression != null) {\r
 106             IDocument doc = expression.getDocument();\r
 107             try {\r
 108                 Point selection = expression.getSelection();\r
 109                 doc.replace(selection.x, selection.y, var);\r
 110                 expression.setSelection(selection.x + var.length());\r
 111             } catch (BadLocationException e) {\r
 112                 e.printStackTrace();\r
 113             }\r
 114         }\r
 115     }\r
 116 \r
 117     @Override\r
 118     public void save(final Resource expression, Map<String, Object> data) {\r
 119         final String currentText = this.expression.getExpression();\r
 120         final String oldEquation = (String)data.get("equation");\r
 121         if(oldEquation == null || \r
 122                 (currentText != null && expressionType != null)) {\r
 123             data.put("equation", currentText);\r
 124             SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
 125                 @Override\r
 126                 public void perform(WriteGraph g)\r
 127                 throws DatabaseException {\r
 128                     SysdynResource sr = SysdynResource.getInstance(g);\r
 129                     Layer0 l0 = Layer0.getInstance(g);\r
 130                     \r
 131                     if(ExpressionUtils.isParameter(currentText)) {\r
 132                         if(!expressionType.equals(sr.ConstantExpression))\r
 133                                 expressionType = sr.ParameterExpression;\r
 134                     } else {\r
 135                         expressionType = sr.NormalExpression;\r
 136                     }\r
 137                     if (oldEquation != null \r
 138                             && expression != null \r
 139                             && g.isInstanceOf(expression, expressionType) \r
 140                             && currentText.equals(oldEquation)) {\r
 141                         return;\r
 142                     }\r
 143                     \r
 144                     if(!g.isInstanceOf(expression, expressionType)) {\r
 145                         Resource ownerList = OrderedSetUtils.getSingleOwnerList(g, expression);\r
 146                         final Resource newExpression = GraphUtils.create2(g, expressionType, \r
 147                                         sr.HasEquation, currentText);\r
 148                         String arrayRange = g.getPossibleRelatedValue(expression, sr.HasArrayRange, Bindings.STRING);\r
 149                         if(arrayRange != null)\r
 150                                 g.claimLiteral(newExpression, sr.HasArrayRange, arrayRange);\r
 151                         \r
 152                         final Resource variable = g.getSingleObject(ownerList, sr.HasExpressions_Inverse);\r
 153                         OrderedSetUtils.replace(g, ownerList, expression, newExpression);\r
 154                         g.deny(expression, l0.PartOf);\r
 155                         g.claim(newExpression, l0.PartOf, variable);\r
 156                         \r
 157                         \r
 158                                                 VirtualGraph runtime = g.getService(VirtualGraph.class);\r
 159                                                 g.syncRequest(new WriteRequest(runtime) {\r
 160                                                         @Override\r
 161                                                         public void perform(WriteGraph graph) throws DatabaseException {\r
 162                                                                 SysdynResource sr = SysdynResource.getInstance(graph);\r
 163                                                                 if(variable != null) {\r
 164                                                                         if(graph.hasStatement(variable, sr.HasActiveExpression))\r
 165                                                                                 graph.deny(variable, sr.HasActiveExpression);\r
 166                                                                         graph.claim(variable, sr.HasActiveExpression, newExpression);\r
 167                                                                 }\r
 168                                                         }\r
 169                                                 }\r
 170                                                 );\r
 171                     } else {\r
 172                         g.claimLiteral(expression, sr.HasEquation, currentText);\r
 173                     }\r
 174                 }\r
 175 \r
 176             });\r
 177         }\r
 178     }\r
 179 \r
 180     @Override\r
 181     public void updateData(Map<String, Object> data) {\r
 182         if(this.expression != null && this.expression.getExpression() != null)\r
 183             data.put("equation", this.expression.getExpression());\r
 184     }\r
 185 \r
 186     @Override\r
 187     public void addKeyListener(KeyListener listener) {\r
 188         this.expression.getSourceViewer().getTextWidget().addKeyListener(listener);\r
 189 \r
 190     }\r
 191 \r
 192     @Override\r
 193     public void addModifyListener(ModifyListener listener) {\r
 194         this.expression.getSourceViewer().getTextWidget().addModifyListener(listener);\r
 195 \r
 196     }\r
 197 \r
 198     @Override\r
 199     public void addFocusListener(FocusListener listener) {\r
 200         this.expression.getSourceViewer().getTextWidget().addFocusListener(listener);\r
 201     }\r
 202 \r
 203         @Override\r
 204         public void addVerifyKeyListener(VerifyKeyListener listener) {\r
 205                 this.expression.getSourceViewer().getTextWidget().addVerifyKeyListener(listener);\r
 206         }\r
 207 }\r