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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.sysdyn.ui.equation.expressions;\r
  13 \r
  14 import java.util.Arrays;\r
  15 import java.util.List;\r
  16 import java.util.Map;\r
  17 \r
  18 import org.eclipse.jface.layout.GridDataFactory;\r
  19 import org.eclipse.jface.layout.GridLayoutFactory;\r
  20 import org.eclipse.jface.text.BadLocationException;\r
  21 import org.eclipse.jface.text.IDocument;\r
  22 import org.eclipse.swt.SWT;\r
  23 import org.eclipse.swt.events.FocusAdapter;\r
  24 import org.eclipse.swt.events.FocusEvent;\r
  25 import org.eclipse.swt.graphics.Point;\r
  26 import org.eclipse.swt.widgets.Composite;\r
  27 import org.eclipse.swt.widgets.Label;\r
  28 import org.simantics.db.Builtins;\r
  29 import org.simantics.db.ReadGraph;\r
  30 import org.simantics.db.Resource;\r
  31 import org.simantics.db.WriteGraph;\r
  32 import org.simantics.db.common.request.WriteRequest;\r
  33 import org.simantics.db.exception.DatabaseException;\r
  34 import org.simantics.db.request.Read;\r
  35 import org.simantics.sysdyn.SysdynResource;\r
  36 import org.simantics.ui.SimanticsUI;\r
  37 \r
  38 public class WithLookupExpressionViewFactor implements IExpressionViewFactor {\r
  39 \r
  40 \r
  41     private Label expressionLabel;\r
  42     private ExpressionField expression;\r
  43     private Label lookupLabel;\r
  44     private ExpressionField lookup;\r
  45     private ExpressionField lastSelectedText = expression;\r
  46 \r
  47     @Override\r
  48     public void createView(Composite parent, Map<String, Object> data) {\r
  49 \r
  50         final String equation = data.get("equation") != null ? (String)data.get("equation") : "";\r
  51         final String lookupTable = data.get("lookup") != null ? (String)data.get("lookup") : "";\r
  52 \r
  53         GridLayoutFactory.fillDefaults().numColumns(2).spacing(3, 3).applyTo(parent);\r
  54 \r
  55         expressionLabel = new Label(parent, SWT.NONE);\r
  56         expressionLabel.setFont(FONT);\r
  57         expressionLabel.setText("With\nLookup");\r
  58         GridDataFactory.fillDefaults().applyTo(expressionLabel);\r
  59 \r
  60         expression = new ExpressionField(parent, SWT.BORDER);\r
  61         expression.setFont(FONT);\r
  62         expression.setExpression(equation);\r
  63         GridDataFactory.fillDefaults().grab(true, true).applyTo(expression);\r
  64 \r
  65         expression.getSourceViewer().getTextWidget().addFocusListener(new FocusAdapter() {\r
  66 \r
  67             @Override\r
  68             public void focusLost(FocusEvent e) {\r
  69                 lastSelectedText = expression;\r
  70             }\r
  71         });\r
  72 \r
  73         lookupLabel = new Label(parent, SWT.NONE);\r
  74         lookupLabel.setFont(FONT);\r
  75         lookupLabel.setText("Lookup\ntable");\r
  76         GridDataFactory.fillDefaults().applyTo(lookupLabel);\r
  77 \r
  78         lookup = new ExpressionField(parent, SWT.BORDER);\r
  79         lookup.setFont(FONT);\r
  80         lookup.setExpression(lookupTable);\r
  81         GridDataFactory.fillDefaults().grab(true, true).applyTo(lookup);\r
  82 \r
  83         lookup.getSourceViewer().getTextWidget().addFocusListener(new FocusAdapter() {\r
  84 \r
  85             @Override\r
  86             public void focusLost(FocusEvent e) {\r
  87                 lastSelectedText = lookup;\r
  88             }\r
  89         });\r
  90     }\r
  91 \r
  92     @Override\r
  93     public void readData(final Resource variable, Map<String, Object> data) {\r
  94         String[] results = null;\r
  95         if (variable != null && data.get("equation") == null) {\r
  96             try {\r
  97                 results = SimanticsUI.getSession().syncRequest(new Read<String[]>() {\r
  98 \r
  99                     @Override\r
 100                     public String[] perform(ReadGraph graph) throws DatabaseException {\r
 101                         String[] results = new String[2];\r
 102                         SysdynResource sr = SysdynResource.getInstance(graph);\r
 103                         Resource expression = graph.getPossibleObject(variable, sr.HasExpression);\r
 104                         if (expression != null && graph.isInstanceOf(expression, sr.WithLookupExpression)) {\r
 105                             results[0] = graph.getRelatedValue(expression, sr.HasEquation);\r
 106                             results[1] = graph.getRelatedValue(expression, sr.HasLookup);\r
 107                         } else {\r
 108                             results[0] = "";\r
 109                             results[1] = "";\r
 110                         }\r
 111                         return results;\r
 112                     }\r
 113 \r
 114                 });\r
 115             } catch (DatabaseException e1) {\r
 116                 e1.printStackTrace();\r
 117             }\r
 118             data.put("equation", results[0]);\r
 119             data.put("lookup", results[1]);\r
 120         }\r
 121     }\r
 122 \r
 123     @Override\r
 124     public void writeData(final Resource variable, Map<String, Object> data) {\r
 125         final String currentExpression = expression.getExpression();\r
 126         final String currentLookupTable = lookup.getExpression();\r
 127 \r
 128         if(currentExpression != null && currentLookupTable != null) {\r
 129             data.put("equation", currentExpression);\r
 130             data.put("lookup", currentLookupTable);\r
 131             SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
 132                 @Override\r
 133                 public void perform(WriteGraph g)\r
 134                 throws DatabaseException {\r
 135                     SysdynResource sr = SysdynResource.getInstance(g);\r
 136                     Resource expression = g.getPossibleObject(variable, sr.HasExpression);\r
 137                     Builtins b = g.getBuiltins();\r
 138                     if(expression != null) {\r
 139                         g.deny(variable, sr.HasExpression);\r
 140                     }\r
 141                     expression = g.newResource();\r
 142                     g.claim(expression, b.InstanceOf, null, sr.WithLookupExpression);\r
 143                     g.claim(variable, sr.HasExpression, expression);\r
 144                     g.claimValue(expression, sr.HasEquation, currentExpression);\r
 145                     g.claimValue(expression, sr.HasLookup, currentLookupTable);\r
 146                 }\r
 147 \r
 148             });\r
 149         }\r
 150     }\r
 151 \r
 152     @Override\r
 153     public void focus() {\r
 154         if(this.lastSelectedText != null) this.lastSelectedText.focus();\r
 155     }\r
 156 \r
 157     @Override\r
 158     public void replaceSelection(String var) {\r
 159         if(lastSelectedText != null) {\r
 160             IDocument doc = lastSelectedText.getDocument();\r
 161             try {\r
 162                 Point selection = lastSelectedText.getSelection();\r
 163                 doc.replace(selection.x, selection.y, var);\r
 164                 lastSelectedText.setSelection(selection.x + var.length());\r
 165             } catch (BadLocationException e) {\r
 166                 e.printStackTrace();\r
 167             }\r
 168         }\r
 169     }\r
 170 \r
 171     @Override\r
 172     public void updateData(Map<String, Object> data) {\r
 173         if(this.expression != null && this.expression.getExpression() != null)\r
 174             data.put("equation", this.expression.getExpression());\r
 175         if(this.lookup != null && this.lookup.getExpression() != null)\r
 176             data.put("lookup", this.lookup.getExpression());\r
 177     }\r
 178 \r
 179     @Override\r
 180     public List<ExpressionField> getExpressionFields() {\r
 181         return Arrays.asList(this.expression, this.lookup);\r
 182     }\r
 183 }