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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in 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.equation.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.graphics.Point;\r
  24 import org.eclipse.swt.widgets.Composite;\r
  25 import org.eclipse.swt.widgets.Label;\r
  26 import org.simantics.db.ReadGraph;\r
  27 import org.simantics.db.Resource;\r
  28 import org.simantics.db.WriteGraph;\r
  29 import org.simantics.db.common.request.WriteRequest;\r
  30 import org.simantics.db.exception.DatabaseException;\r
  31 import org.simantics.db.request.Read;\r
  32 import org.simantics.layer0.Layer0;\r
  33 import org.simantics.sysdyn.SysdynResource;\r
  34 import org.simantics.ui.SimanticsUI;\r
  35 \r
  36 public class AuxiliaryExpressionViewFactor implements IExpressionViewFactor {\r
  37 \r
  38     private Label equationLabel;\r
  39     private ExpressionField expression;\r
  40 \r
  41     @Override\r
  42     public void createView(Composite parent, Map<String, Object> data) {\r
  43 \r
  44         final String equation = data.get("equation") != null ? (String)data.get("equation") : "";\r
  45 \r
  46         GridLayoutFactory.fillDefaults().numColumns(2).spacing(3, 3).applyTo(parent);\r
  47         equationLabel = new Label(parent, SWT.NONE);\r
  48         equationLabel.setFont(FONT);\r
  49         equationLabel.setText("=");\r
  50         GridDataFactory.fillDefaults().applyTo(equationLabel);\r
  51 \r
  52 \r
  53         expression = new ExpressionField(parent, SWT.BORDER);\r
  54         expression.setFont(FONT);\r
  55         expression.setExpression(equation);\r
  56         GridDataFactory.fillDefaults().grab(true, true).applyTo(expression);\r
  57 \r
  58     }\r
  59 \r
  60     @Override\r
  61     public void readData(final Resource variable, Map<String, Object> data) {\r
  62         String equation = null;\r
  63         if (variable != null && data.get("equation") == null) {\r
  64             try {\r
  65                 equation = SimanticsUI.getSession().syncRequest(new Read<String>() {\r
  66 \r
  67                     @Override\r
  68                     public String perform(ReadGraph graph) throws DatabaseException {\r
  69                         SysdynResource sr = SysdynResource.getInstance(graph);\r
  70                         Resource expression = graph.getPossibleObject(variable, sr.HasExpression);\r
  71                         if (expression != null && graph.isInstanceOf(expression, sr.NormalExpression)) {\r
  72                             return graph.getRelatedValue(expression, sr.HasEquation);\r
  73                         } else {\r
  74                             return "";\r
  75                         }\r
  76                     }\r
  77 \r
  78                 });\r
  79             } catch (DatabaseException e1) {\r
  80                 e1.printStackTrace();\r
  81             }\r
  82             data.put("equation", equation);\r
  83         }\r
  84     }\r
  85 \r
  86     @Override\r
  87     public void writeData(final Resource variable, Map<String, Object> data) {\r
  88         final String currentText = expression.getExpression();\r
  89         if(currentText != null) {\r
  90             data.put("equation", currentText);\r
  91             SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
  92                 @Override\r
  93                 public void perform(WriteGraph g)\r
  94                 throws DatabaseException {\r
  95                     SysdynResource sr = SysdynResource.getInstance(g);\r
  96                     Resource expression = g.getPossibleObject(variable, sr.HasExpression);\r
  97                     Layer0 l0 = Layer0.getInstance(g);\r
  98                     if(expression != null) {\r
  99                         g.deny(variable, sr.HasExpression);\r
 100                     }\r
 101                     expression = g.newResource();\r
 102                     g.claim(expression, l0.InstanceOf, null, sr.NormalExpression);\r
 103                     g.claim(variable, sr.HasExpression, expression);\r
 104                     g.claimLiteral(expression, sr.HasEquation, currentText);\r
 105                 }\r
 106 \r
 107             });\r
 108         }\r
 109     }\r
 110 \r
 111     @Override\r
 112     public void focus() {\r
 113         if(this.expression != null) this.expression.focus();\r
 114     }\r
 115 \r
 116     @Override\r
 117     public void replaceSelection(String var) {\r
 118         if(expression != null) {\r
 119             IDocument doc = expression.getDocument();\r
 120             try {\r
 121                 Point selection = expression.getSelection();\r
 122                 doc.replace(selection.x, selection.y, var);\r
 123                 expression.setSelection(selection.x + var.length());\r
 124             } catch (BadLocationException e) {\r
 125                 e.printStackTrace();\r
 126             }\r
 127         }\r
 128     }\r
 129 \r
 130     @Override\r
 131     public void updateData(Map<String, Object> data) {\r
 132         if(this.expression != null && this.expression.getExpression() != null)\r
 133             data.put("equation", this.expression.getExpression());\r
 134     }\r
 135 \r
 136     @Override\r
 137     public List<ExpressionField> getExpressionFields() {\r
 138         return Arrays.asList(this.expression);\r
 139     }\r
 140 }\r