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

   1 package org.simantics.sysdyn.ui.equation.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.layout.GridLayoutFactory;\r
   9 import org.eclipse.swt.SWT;\r
  10 import org.eclipse.swt.events.FocusAdapter;\r
  11 import org.eclipse.swt.events.FocusEvent;\r
  12 import org.eclipse.swt.graphics.Point;\r
  13 import org.eclipse.swt.widgets.Composite;\r
  14 import org.eclipse.swt.widgets.Label;\r
  15 import org.eclipse.swt.widgets.Text;\r
  16 import org.simantics.db.Builtins;\r
  17 import org.simantics.db.ReadGraph;\r
  18 import org.simantics.db.Resource;\r
  19 import org.simantics.db.WriteGraph;\r
  20 import org.simantics.db.common.request.WriteRequest;\r
  21 import org.simantics.db.exception.DatabaseException;\r
  22 import org.simantics.db.request.Read;\r
  23 import org.simantics.sysdyn.SysdynResource;\r
  24 import org.simantics.ui.SimanticsUI;\r
  25 \r
  26 public class WithLookupExpressionViewFactor implements IExpressionViewFactor {\r
  27 \r
  28     \r
  29     private Label expressionLabel;\r
  30     private Text expression;\r
  31     private Label lookupLabel;\r
  32     private Text lookup;\r
  33     private Point lastSelection = new Point(0,0);\r
  34     private Text lastSelectedText = expression;\r
  35     \r
  36     @Override\r
  37     public void createView(Composite parent, Map<String, Object> data) {\r
  38 \r
  39         final String equation = data.get("equation") != null ? (String)data.get("equation") : "";\r
  40         final String lookupTable = data.get("lookup") != null ? (String)data.get("lookup") : "";\r
  41         \r
  42         GridLayoutFactory.fillDefaults().numColumns(2).spacing(3, 3).applyTo(parent);\r
  43 \r
  44         expressionLabel = new Label(parent, SWT.NONE);\r
  45         expressionLabel.setFont(FONT);\r
  46         expressionLabel.setText("With\nLookup");\r
  47         GridDataFactory.fillDefaults().applyTo(expressionLabel);\r
  48 \r
  49         expression = new Text(parent, SWT.MULTI | SWT.V_SCROLL | SWT.BORDER);\r
  50         expression.setFont(FONT);\r
  51         expression.setText(equation);\r
  52         GridDataFactory.fillDefaults().grab(true, true).applyTo(expression);\r
  53         \r
  54         \r
  55         expression.addFocusListener(new FocusAdapter() {\r
  56 \r
  57             @Override\r
  58             public void focusLost(FocusEvent e) {\r
  59                 lastSelection = expression.getSelection();\r
  60                 lastSelectedText = expression;\r
  61             }\r
  62         });\r
  63 \r
  64         lookupLabel = new Label(parent, SWT.NONE);\r
  65         lookupLabel.setFont(FONT);\r
  66         lookupLabel.setText("Lookup\ntable");\r
  67         GridDataFactory.fillDefaults().applyTo(lookupLabel);\r
  68 \r
  69 \r
  70         lookup = new Text(parent, SWT.MULTI | SWT.V_SCROLL | SWT.BORDER);\r
  71         lookup.setFont(FONT);\r
  72         lookup.setText(lookupTable);\r
  73         GridDataFactory.fillDefaults().grab(true, true).applyTo(lookup);\r
  74 \r
  75         lookup.addFocusListener(new FocusAdapter() {\r
  76 \r
  77             @Override\r
  78             public void focusLost(FocusEvent e) {\r
  79                 lastSelection = lookup.getSelection();\r
  80                 lastSelectedText = lookup;\r
  81             }\r
  82         });\r
  83 \r
  84     }\r
  85 \r
  86     @Override\r
  87     public void readData(final Resource variable, Map<String, Object> data) {\r
  88         String[] results = null;        \r
  89         if (variable != null && data.get("equation") == null) {\r
  90             try {\r
  91                 results = SimanticsUI.getSession().syncRequest(new Read<String[]>() {\r
  92 \r
  93                     @Override\r
  94                     public String[] perform(ReadGraph graph) throws DatabaseException {\r
  95                         String[] results = new String[2];\r
  96                         SysdynResource sr = SysdynResource.getInstance(graph);\r
  97                         Resource expression = graph.getPossibleObject(variable, sr.HasExpression);\r
  98                         if (expression != null && graph.isInstanceOf(expression, sr.WithLookupExpression)) {\r
  99                             results[0] = graph.getRelatedValue(expression, sr.HasEquation);\r
 100                             results[1] = graph.getRelatedValue(expression, sr.HasLookup);\r
 101                         } else {\r
 102                             results[0] = "";\r
 103                             results[1] = "";\r
 104                         }\r
 105                         return results;\r
 106                     }\r
 107 \r
 108                 });\r
 109             } catch (DatabaseException e1) {\r
 110                 e1.printStackTrace();\r
 111             }\r
 112             data.put("equation", results[0]);\r
 113             data.put("lookup", results[1]);\r
 114         }         \r
 115     }\r
 116 \r
 117     @Override\r
 118     public void writeData(final Resource variable, Map<String, Object> data) {\r
 119         final String currentExpression = expression.getText();\r
 120         final String currentLookupTable = lookup.getText();\r
 121         \r
 122         if(currentExpression != null && currentLookupTable != null) {\r
 123             data.put("equation", currentExpression);\r
 124             data.put("lookup", currentLookupTable);\r
 125             SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
 126                 @Override\r
 127                 public void perform(WriteGraph g)\r
 128                 throws DatabaseException {\r
 129                     SysdynResource sr = SysdynResource.getInstance(g);\r
 130                     Resource expression = g.getPossibleObject(variable, sr.HasExpression);\r
 131                     Builtins b = g.getBuiltins();\r
 132                     if(expression != null) {\r
 133                         g.deny(variable, sr.HasExpression);\r
 134                     }\r
 135                     expression = g.newResource();\r
 136                     g.claim(expression, b.InstanceOf, sr.WithLookupExpression);\r
 137                     g.claim(variable, sr.HasExpression, expression);\r
 138                     g.claimValue(expression, sr.HasEquation, currentExpression);\r
 139                     g.claimValue(expression, sr.HasLookup, currentLookupTable);\r
 140                 }\r
 141 \r
 142             });\r
 143         }        \r
 144     }\r
 145 \r
 146     @Override\r
 147     public void focus() {\r
 148         if(this.lastSelectedText != null) this.lastSelectedText.forceFocus();\r
 149     }\r
 150 \r
 151     @Override\r
 152     public void replaceSelection(String var) {\r
 153         if(this.lastSelectedText != null) {\r
 154             String oldExpression = lastSelectedText.getText();\r
 155             if(lastSelection == null)\r
 156                 lastSelection = new Point(0,0);\r
 157             String newExpression = oldExpression.substring(0, lastSelection.x) + var + oldExpression.substring(lastSelection.y);\r
 158             lastSelectedText.setText(newExpression);\r
 159             lastSelectedText.setSelection(lastSelection.x + var.length());\r
 160         }\r
 161     }\r
 162 \r
 163     @Override\r
 164     public void updateData(Map<String, Object> data) {\r
 165         if(this.expression != null && this.expression.getText() != null)\r
 166             data.put("equation", this.expression.getText());   \r
 167         if(this.lookup != null && this.lookup.getText() != null)\r
 168             data.put("lookup", this.lookup.getText());        \r
 169     }\r
 170 \r
 171     @Override\r
 172     public List<Text> getExpressionFields() {\r
 173         return Arrays.asList(this.expression, this.lookup);\r
 174     }\r
 175 }