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

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