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.events.KeyAdapter;\r
  11 import org.eclipse.swt.events.KeyEvent;\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     Label expressionLabel;\r
  30     Text expression;\r
  31     Label lookupLabel;\r
  32     Text lookup;\r
  33     \r
  34     private Point lastSelection = new Point(0,0);\r
  35     private Text lastSelectedText = expression;\r
  36     \r
  37     @Override\r
  38     public void createView(Composite parent, Map<String, Object> data) {\r
  39 \r
  40         final String equation = data.get("equation") != null ? (String)data.get("equation") : "";\r
  41         final String lookupTable = data.get("lookup") != null ? (String)data.get("lookup") : "";\r
  42         \r
  43         GridDataFactory.fillDefaults().grab(true, true).applyTo(parent);\r
  44         GridLayoutFactory.fillDefaults().numColumns(2).spacing(3, 3).applyTo(parent);\r
  45 \r
  46         expressionLabel = new Label(parent, SWT.NONE);\r
  47         expressionLabel.setFont(FONT);\r
  48         expressionLabel.setText("With\nLookup");\r
  49         GridDataFactory.fillDefaults().applyTo(expressionLabel);\r
  50 \r
  51         expression = new Text(parent, SWT.MULTI | SWT.V_SCROLL | SWT.BORDER);\r
  52         expression.setFont(FONT);\r
  53         expression.setText(equation);\r
  54         GridDataFactory.fillDefaults().grab(true, true).applyTo(expression);\r
  55         \r
  56         \r
  57         expression.addFocusListener(new FocusAdapter() {\r
  58 \r
  59             @Override\r
  60             public void focusLost(FocusEvent e) {\r
  61                 lastSelection = expression.getSelection();\r
  62                 lastSelectedText = expression;\r
  63             }\r
  64         });\r
  65 \r
  66         expression.addKeyListener(new KeyAdapter() {          \r
  67 \r
  68             @Override\r
  69             public void keyPressed(KeyEvent e) {\r
  70                 if(e.keyCode == SWT.ESC) {\r
  71                     expression.setText(equation);\r
  72                 }                \r
  73             }\r
  74 \r
  75         });\r
  76 \r
  77         lookupLabel = new Label(parent, SWT.NONE);\r
  78         lookupLabel.setFont(FONT);\r
  79         lookupLabel.setText("Lookup\ntable");\r
  80         GridDataFactory.fillDefaults().applyTo(lookupLabel);\r
  81 \r
  82 \r
  83         lookup = new Text(parent, SWT.MULTI | SWT.V_SCROLL | SWT.BORDER);\r
  84         lookup.setFont(FONT);\r
  85         lookup.setText(lookupTable);\r
  86         GridDataFactory.fillDefaults().grab(true, true).applyTo(lookup);\r
  87 \r
  88         lookup.addFocusListener(new FocusAdapter() {\r
  89 \r
  90             @Override\r
  91             public void focusLost(FocusEvent e) {\r
  92                 lastSelection = lookup.getSelection();\r
  93                 lastSelectedText = lookup;\r
  94             }\r
  95         });\r
  96 \r
  97         lookup.addKeyListener(new KeyAdapter() {          \r
  98 \r
  99             @Override\r
 100             public void keyPressed(KeyEvent e) {\r
 101                 if(e.keyCode == SWT.ESC) {\r
 102                     lookup.setText(lookupTable);\r
 103                 }                \r
 104             }\r
 105 \r
 106         });\r
 107         \r
 108     }\r
 109 \r
 110     @Override\r
 111     public void readData(final Resource variable, Map<String, Object> data) {\r
 112         String[] results = null;        \r
 113         if (variable != null && data.get("equation") == null) {\r
 114             try {\r
 115                 results = SimanticsUI.getSession().syncRequest(new Read<String[]>() {\r
 116 \r
 117                     @Override\r
 118                     public String[] perform(ReadGraph graph) throws DatabaseException {\r
 119                         String[] results = new String[2];\r
 120                         SysdynResource sr = SysdynResource.getInstance(graph);\r
 121                         Resource expression = graph.getPossibleObject(variable, sr.HasExpression);\r
 122                         if (expression != null && graph.isInstanceOf(expression, sr.WithLookupExpression)) {\r
 123                             results[0] = graph.getRelatedValue(expression, sr.HasEquation);\r
 124                             results[1] = graph.getRelatedValue(expression, sr.HasLookup);\r
 125                         } else {\r
 126                             results[0] = "";\r
 127                             results[1] = "";\r
 128                         }\r
 129                         return results;\r
 130                     }\r
 131 \r
 132                 });\r
 133             } catch (DatabaseException e1) {\r
 134                 e1.printStackTrace();\r
 135             }\r
 136             data.put("equation", results[0]);\r
 137             data.put("lookup", results[1]);\r
 138         }         \r
 139     }\r
 140 \r
 141     @Override\r
 142     public void writeData(final Resource variable, Map<String, Object> data) {\r
 143         final String currentExpression = expression.getText();\r
 144         final String currentLookupTable = lookup.getText();\r
 145         \r
 146         if(currentExpression != null && currentLookupTable != null) {\r
 147             data.put("equation", currentExpression);\r
 148             data.put("lookup", currentLookupTable);\r
 149             SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
 150                 @Override\r
 151                 public void perform(WriteGraph g)\r
 152                 throws DatabaseException {\r
 153                     SysdynResource sr = SysdynResource.getInstance(g);\r
 154                     Resource expression = g.getPossibleObject(variable, sr.HasExpression);\r
 155                     Builtins b = g.getBuiltins();\r
 156                     if(expression != null) {\r
 157                         g.deny(variable, sr.HasExpression);\r
 158                     }\r
 159                     expression = g.newResource();\r
 160                     g.claim(expression, b.InstanceOf, sr.WithLookupExpression);\r
 161                     g.claim(variable, sr.HasExpression, expression);\r
 162                     g.claimValue(expression, sr.HasEquation, currentExpression);\r
 163                     g.claimValue(expression, sr.HasLookup, currentLookupTable);\r
 164                 }\r
 165 \r
 166             });\r
 167         }        \r
 168     }\r
 169 \r
 170     @Override\r
 171     public void focus() {\r
 172         if(this.lastSelectedText != null) this.lastSelectedText.forceFocus();\r
 173     }\r
 174 \r
 175     @Override\r
 176     public void replaceSelection(String var) {\r
 177         if(this.lastSelectedText != null) {\r
 178             String oldExpression = lastSelectedText.getText();\r
 179             if(lastSelection == null)\r
 180                 lastSelection = new Point(0,0);\r
 181             String newExpression = oldExpression.substring(0, lastSelection.x) + var + oldExpression.substring(lastSelection.y);\r
 182             lastSelectedText.setText(newExpression);\r
 183             lastSelectedText.setSelection(lastSelection.x + var.length());\r
 184         }\r
 185     }\r
 186 \r
 187     @Override\r
 188     public void updateData(Map<String, Object> data) {\r
 189         if(this.expression != null && this.expression.getText() != null)\r
 190             data.put("equation", this.expression.getText());   \r
 191         if(this.lookup != null && this.lookup.getText() != null)\r
 192             data.put("lookup", this.lookup.getText());        \r
 193     }\r
 194 }