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

   1 package org.simantics.sysdyn.ui.properties.widgets.expressions;\r
   2 \r
   3 import java.util.Arrays;\r
   4 import java.util.List;\r
   5 import java.util.Map;\r
   6 \r
   7 import org.eclipse.jface.layout.GridDataFactory;\r
   8 import org.eclipse.jface.text.BadLocationException;\r
   9 import org.eclipse.jface.text.IDocument;\r
  10 import org.eclipse.swt.SWT;\r
  11 import org.eclipse.swt.events.FocusListener;\r
  12 import org.eclipse.swt.events.KeyListener;\r
  13 import org.eclipse.swt.events.ModifyListener;\r
  14 import org.eclipse.swt.graphics.Point;\r
  15 import org.eclipse.swt.widgets.Composite;\r
  16 import org.eclipse.swt.widgets.Label;\r
  17 import org.simantics.db.Builtins;\r
  18 import org.simantics.db.ReadGraph;\r
  19 import org.simantics.db.Resource;\r
  20 import org.simantics.db.WriteGraph;\r
  21 import org.simantics.db.common.request.WriteRequest;\r
  22 import org.simantics.db.exception.DatabaseException;\r
  23 import org.simantics.db.request.Read;\r
  24 import org.simantics.sysdyn.SysdynResource;\r
  25 import org.simantics.sysdyn.ui.properties.EquationTab;\r
  26 import org.simantics.ui.SimanticsUI;\r
  27 \r
  28 public class BasicExpression implements IExpression {\r
  29     \r
  30     ExpressionField expression;\r
  31     Resource expressionType;\r
  32     \r
  33     @Override\r
  34     public void createExpressionFields(Composite parent, Map<String, Object> data) {\r
  35         String equation = data.get("equation") != null ? (String)data.get("equation") : "";\r
  36         \r
  37         Label l = new Label(parent, SWT.NONE);\r
  38         l.setFont(EquationTab.FONT);\r
  39         l.setText("=");\r
  40         \r
  41         expression = new ExpressionField(parent, SWT.BORDER);\r
  42         expression.setExpression(equation);\r
  43         GridDataFactory.fillDefaults().grab(true, true).applyTo(expression);\r
  44     }\r
  45 \r
  46     @Override\r
  47     public void focus() {\r
  48         if(this.expression != null) this.expression.focus();\r
  49         \r
  50     }\r
  51 \r
  52     @Override\r
  53     public List<ExpressionField> getExpressionFields() {\r
  54         return Arrays.asList(this.expression);\r
  55     }\r
  56 \r
  57     @Override\r
  58     public void readData(final Resource variable, Map<String, Object> data) {\r
  59         String equation = null;\r
  60         if (variable != null && data.get("equation") == null && expressionType != null) {\r
  61             try {\r
  62                 equation = SimanticsUI.getSession().syncRequest(new Read<String>() {\r
  63 \r
  64                     @Override\r
  65                     public String perform(ReadGraph graph) throws DatabaseException {\r
  66                         SysdynResource sr = SysdynResource.getInstance(graph);\r
  67                         Resource expression = graph.getPossibleObject(variable, sr.HasExpression);\r
  68                         if (expression != null && graph.isInstanceOf(expression, expressionType)) {\r
  69                             return graph.getRelatedValue(expression, sr.HasEquation);\r
  70                         } else {\r
  71                             return "";\r
  72                         }\r
  73                     }\r
  74 \r
  75                 });\r
  76             } catch (DatabaseException e1) {\r
  77                 e1.printStackTrace();\r
  78             }\r
  79             data.put("equation", equation);\r
  80         }\r
  81     }\r
  82 \r
  83     @Override\r
  84     public void replaceSelection(String var) {\r
  85         if(expression != null) {\r
  86             IDocument doc = expression.getDocument();\r
  87             try {\r
  88                 Point selection = expression.getSelection();\r
  89                 doc.replace(selection.x, selection.y, var);\r
  90                 expression.setSelection(selection.x + var.length());\r
  91             } catch (BadLocationException e) {\r
  92                 e.printStackTrace();\r
  93             }\r
  94         }\r
  95     }\r
  96 \r
  97     @Override\r
  98     public void save(final Resource variable, Map<String, Object> data) {\r
  99         final String currentText = expression.getExpression();\r
 100         if(currentText != null && expressionType != null) {\r
 101             data.put("equation", currentText);\r
 102             SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
 103                 @Override\r
 104                 public void perform(WriteGraph g)\r
 105                 throws DatabaseException {\r
 106                     SysdynResource sr = SysdynResource.getInstance(g);\r
 107                     Resource expression = g.getPossibleObject(variable, sr.HasExpression);\r
 108                     Builtins b = g.getBuiltins();\r
 109                     if(expression != null) {\r
 110                         g.deny(variable, sr.HasExpression);\r
 111                     }\r
 112                     expression = g.newResource();\r
 113                     g.claim(expression, b.InstanceOf, null, expressionType);\r
 114                     g.claim(variable, sr.HasExpression, expression);\r
 115                     g.claimValue(expression, sr.HasEquation, currentText);\r
 116                 }\r
 117 \r
 118             });\r
 119         }\r
 120         expression.setExpression(currentText);\r
 121     }\r
 122 \r
 123     @Override\r
 124     public void updateData(Map<String, Object> data) {\r
 125         if(this.expression != null && this.expression.getExpression() != null)\r
 126             data.put("equation", this.expression.getExpression());\r
 127     }\r
 128 \r
 129     @Override\r
 130     public void addKeyListener(KeyListener listener) {\r
 131         this.expression.getSourceViewer().getTextWidget().addKeyListener(listener);\r
 132         \r
 133     }\r
 134 \r
 135     @Override\r
 136     public void addModifyListener(ModifyListener listener) {\r
 137         this.expression.getSourceViewer().getTextWidget().addModifyListener(listener);\r
 138         \r
 139     }\r
 140     \r
 141     @Override\r
 142     public void addFocusListener(FocusListener listener) {\r
 143         this.expression.getSourceViewer().getTextWidget().addFocusListener(listener);\r
 144     }\r
 145 }\r