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