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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2010 Association for Decentralized Information Management in\r
   3  * 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.properties.widgets.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.custom.VerifyKeyListener;\r
  24 import org.eclipse.swt.events.FocusAdapter;\r
  25 import org.eclipse.swt.events.FocusEvent;\r
  26 import org.eclipse.swt.events.FocusListener;\r
  27 import org.eclipse.swt.events.KeyListener;\r
  28 import org.eclipse.swt.events.ModifyListener;\r
  29 import org.eclipse.swt.events.SelectionAdapter;\r
  30 import org.eclipse.swt.events.SelectionEvent;\r
  31 import org.eclipse.swt.graphics.Point;\r
  32 import org.eclipse.swt.widgets.Composite;\r
  33 import org.eclipse.swt.widgets.Label;\r
  34 import org.eclipse.swt.widgets.Spinner;\r
  35 import org.eclipse.swt.widgets.Table;\r
  36 import org.simantics.databoard.Bindings;\r
  37 import org.simantics.db.ReadGraph;\r
  38 import org.simantics.db.Resource;\r
  39 import org.simantics.db.VirtualGraph;\r
  40 import org.simantics.db.WriteGraph;\r
  41 import org.simantics.db.common.request.WriteRequest;\r
  42 import org.simantics.db.common.utils.ListUtils;\r
  43 import org.simantics.db.exception.DatabaseException;\r
  44 import org.simantics.db.request.Read;\r
  45 import org.simantics.layer0.Layer0;\r
  46 import org.simantics.layer0.utils.direct.GraphUtils;\r
  47 import org.simantics.sysdyn.SysdynResource;\r
  48 import org.simantics.ui.SimanticsUI;\r
  49 \r
  50 /**\r
  51  * IExpression for displaying fields of DelayExpression\r
  52  * @author Teemu Lempinen\r
  53  * @author Tuomas Miettinen\r
  54  *\r
  55  */\r
  56 public class DelayExpression implements IExpression {\r
  57 \r
  58     private ExpressionField equation, delayTime, initialValue;\r
  59     private ExpressionField lastSelectedText = equation;\r
  60     private Spinner order;\r
  61     private Resource expression;\r
  62 \r
  63     /**\r
  64      * Creates a new DelayExpression\r
  65      * @param expression\r
  66      */\r
  67     public DelayExpression(Resource expression) {\r
  68         this.expression = expression;\r
  69     }\r
  70 \r
  71     /**\r
  72      * Displays the fields for delayExpression\r
  73      */\r
  74     @Override\r
  75     public void createExpressionFields(Composite parent, final Map<String, Object> data, Table allowedVariables) {\r
  76         // Get possible existing data\r
  77         GridLayoutFactory.fillDefaults().numColumns(2).applyTo(parent);\r
  78         String eq = data.get("equation") != null ? (String)data.get("equation") : "";\r
  79         String dt = data.get("delayTime") != null ? (String)data.get("delayTime") : "";\r
  80         String iv = data.get("initialValue") != null ? (String)data.get("initialValue") : "";\r
  81         int o = data.get("order") != null ? (Integer)data.get("order") : 3;\r
  82 \r
  83         Label l = new Label(parent, SWT.NONE);\r
  84         l.setText("expression");\r
  85 \r
  86         // Equation that is delayed\r
  87         equation = new ExpressionField(parent, SWT.BORDER, allowedVariables, true);\r
  88         equation.setExpression(eq);\r
  89         GridDataFactory.fillDefaults().grab(true, true).applyTo(equation);\r
  90         equation.getSourceViewer().getTextWidget().addFocusListener(new FocusAdapter() {\r
  91 \r
  92             @Override\r
  93             public void focusLost(FocusEvent e) {\r
  94                 lastSelectedText = equation;\r
  95             }\r
  96         });\r
  97 \r
  98         l = new Label(parent, SWT.NONE);\r
  99         l.setText("delay time");\r
 100 \r
 101         // How much the equation is delayed\r
 102         delayTime = new ExpressionField(parent, SWT.BORDER, allowedVariables, true);\r
 103         delayTime.setExpression(dt);\r
 104         GridDataFactory.fillDefaults().grab(true, true).applyTo(delayTime);\r
 105 \r
 106         delayTime.getSourceViewer().getTextWidget().addFocusListener(new FocusAdapter() {\r
 107 \r
 108             @Override\r
 109             public void focusLost(FocusEvent e) {\r
 110                 lastSelectedText = delayTime;\r
 111             }\r
 112         });\r
 113 \r
 114         l = new Label(parent, SWT.NONE);\r
 115         l.setText("initial value");\r
 116 \r
 117         // What is the initial value of the delay (empty == same as equation)\r
 118         initialValue = new ExpressionField(parent, SWT.BORDER, allowedVariables, true);\r
 119         initialValue.setExpression(iv);\r
 120         GridDataFactory.fillDefaults().grab(true, true).applyTo(initialValue);\r
 121 \r
 122         initialValue.getSourceViewer().getTextWidget().addFocusListener(new FocusAdapter() {\r
 123 \r
 124             @Override\r
 125             public void focusLost(FocusEvent e) {\r
 126                 lastSelectedText = initialValue;\r
 127             }\r
 128         });\r
 129 \r
 130 \r
 131         l = new Label(parent, SWT.NONE);\r
 132         l.setText("order");\r
 133 \r
 134         // The order of the delay (default == 3)\r
 135         order = new Spinner(parent, SWT.BORDER);\r
 136         order.setMinimum(1);\r
 137         order.setSelection(o);\r
 138         order.addSelectionListener(new SelectionAdapter() {\r
 139             @Override\r
 140             public void widgetSelected(SelectionEvent e) {\r
 141                 save(expression, data);\r
 142             }\r
 143         });\r
 144         GridDataFactory.fillDefaults().applyTo(order);\r
 145     }\r
 146 \r
 147     @Override\r
 148     public void focus() {\r
 149         lastSelectedText.setFocus();\r
 150     }\r
 151 \r
 152     @Override\r
 153     public List<ExpressionField> getExpressionFields() {\r
 154         return Arrays.asList(equation, delayTime, initialValue);\r
 155     }\r
 156 \r
 157     @Override\r
 158     public void readData(final Resource expression, Map<String, Object> data) {\r
 159         class Auxiliary {\r
 160             String equation, delayTime, initialValue;\r
 161             Integer order;\r
 162         }\r
 163 \r
 164         Auxiliary results = null;\r
 165 \r
 166         try {\r
 167             results = SimanticsUI.getSession().syncRequest(new Read<Auxiliary>() {\r
 168 \r
 169                 @Override\r
 170                 public Auxiliary perform(ReadGraph graph) throws DatabaseException {\r
 171                     Auxiliary results = new Auxiliary();\r
 172                     SysdynResource sr = SysdynResource.getInstance(graph);\r
 173                     if (expression != null && graph.isInstanceOf(expression, sr.DelayExpression)) {\r
 174                         results.equation = graph.getPossibleRelatedValue(expression, sr.DelayExpression_expression);\r
 175                         results.delayTime = graph.getPossibleRelatedValue(expression, sr.DelayExpression_delayTime);\r
 176                         results.initialValue = graph.getPossibleRelatedValue(expression, sr.DelayExpression_initialValue);\r
 177                         results.order = graph.getPossibleRelatedValue(expression, sr.DelayExpression_order);\r
 178                     } else {\r
 179                         results.equation = "";\r
 180                         results.delayTime = "";\r
 181                         results.order = 1;\r
 182                     }\r
 183                     return results;\r
 184                 }\r
 185             });\r
 186         } catch (DatabaseException e1) {\r
 187             e1.printStackTrace();\r
 188         }\r
 189         if(results.equation != null)\r
 190             data.put("equation", results.equation);\r
 191         if(results.delayTime != null)\r
 192             data.put("delayTime", results.delayTime);\r
 193         if(results.initialValue != null)\r
 194             data.put("initialValue", results.initialValue);\r
 195         if(results.order != null)\r
 196             data.put("order", results.order);\r
 197     }\r
 198 \r
 199     @Override\r
 200     public void replaceSelection(String var) {\r
 201         if(lastSelectedText != null) {\r
 202             IDocument doc = lastSelectedText.getDocument();\r
 203             try {\r
 204                 Point selection = lastSelectedText.getSelection();\r
 205                 doc.replace(selection.x, selection.y, var);\r
 206                 lastSelectedText.setSelection(selection.x + var.length());\r
 207             } catch (BadLocationException e) {\r
 208                 e.printStackTrace();\r
 209             }\r
 210         }    \r
 211     }\r
 212 \r
 213     @Override\r
 214     public void save(Resource expr, Map<String, Object> data) {\r
 215         this.expression = expr;\r
 216         final String currentEquation = this.equation.getExpression();\r
 217         final String currentDelayTime =  this.delayTime.getExpression();\r
 218         final String currentInitialValue = this.initialValue.getExpression();\r
 219         final Integer currentOrder = this.order.getSelection();\r
 220 \r
 221         String oldEquation = (String)data.get("equation");\r
 222         String oldDelayTime = (String)data.get("delayTime");\r
 223         String oldInitialValue = (String)data.get("initialValue");\r
 224         Integer oldOrder = (Integer)data.get("order");\r
 225 \r
 226         if((oldEquation == null || oldDelayTime == null || oldOrder == null || oldInitialValue == null) ||\r
 227                 !oldEquation.equals(currentEquation) || !oldDelayTime.equals(currentDelayTime) ||\r
 228                 !oldOrder.equals(currentOrder) || !oldInitialValue.equals(currentInitialValue)) {\r
 229             // old value was null or value has changed -> Do save\r
 230 \r
 231             data.putAll(data);\r
 232             data.put("equation", currentEquation);\r
 233             data.put("delayTime", currentDelayTime);\r
 234             data.put("initialValue", currentInitialValue);\r
 235             data.put("order", currentOrder);\r
 236 \r
 237             SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
 238                 @Override\r
 239                 public void perform(WriteGraph g)\r
 240                         throws DatabaseException {\r
 241                     SysdynResource sr = SysdynResource.getInstance(g);\r
 242                     Layer0 l0 = Layer0.getInstance(g);\r
 243 \r
 244                     if(!g.isInstanceOf(expression, sr.DelayExpression)) {\r
 245                         // Create a new DelayExpression, if the old expression was something else\r
 246                         final Resource newExpression = GraphUtils.create2(g, sr.DelayExpression);\r
 247                         String arrayRange = g.getPossibleRelatedValue(expression, sr.Expression_arrayRange, Bindings.STRING);\r
 248                         if(arrayRange != null)\r
 249                             g.claimLiteral(newExpression, sr.Expression_arrayRange, arrayRange);\r
 250 \r
 251                         final Resource variable = g.getPossibleObject(expression, l0.PartOf);\r
 252                         Resource ownerList = g.getPossibleObject(variable, sr.Variable_expressionList);\r
 253                         ListUtils.replace(g, ownerList, expression, newExpression);\r
 254                         g.deny(expression, l0.PartOf);\r
 255                         g.claim(newExpression, l0.PartOf, variable);\r
 256 \r
 257                         VirtualGraph runtime = g.getService(VirtualGraph.class);\r
 258                         g.syncRequest(new WriteRequest(runtime) {\r
 259                             @Override\r
 260                             public void perform(WriteGraph graph) throws DatabaseException {\r
 261                                 SysdynResource sr = SysdynResource.getInstance(graph);\r
 262                                 if(graph.hasStatement(variable, sr.IndependentVariable_activeExpression))\r
 263                                     graph.deny(variable, sr.IndependentVariable_activeExpression);\r
 264                                 graph.claim(variable, sr.IndependentVariable_activeExpression, newExpression);\r
 265                             }\r
 266                         }\r
 267                                 );\r
 268                         expression = newExpression;\r
 269                     }\r
 270                     \r
 271                     // Claim values\r
 272                     g.claimLiteral(expression, sr.DelayExpression_expression, currentEquation);\r
 273                     g.claimLiteral(expression, sr.DelayExpression_delayTime, currentDelayTime);\r
 274                     g.claimLiteral(expression, sr.DelayExpression_initialValue, currentInitialValue);\r
 275                     g.claimLiteral(expression, sr.DelayExpression_order, currentOrder);\r
 276                 }\r
 277             });\r
 278         }\r
 279 \r
 280     }\r
 281 \r
 282     @Override\r
 283     public void updateData(Map<String, Object> data) {\r
 284         if(this.equation != null && this.equation.getExpression() != null)\r
 285             data.put("equation", this.equation.getExpression());\r
 286         if(this.delayTime != null && this.delayTime.getExpression() != null)\r
 287             data.put("delayTime", this.delayTime.getExpression());   \r
 288         if(this.initialValue != null && this.initialValue.getExpression() != null)\r
 289             data.put("initialValue", this.initialValue.getExpression());   \r
 290         if(this.order != null)\r
 291             data.put("order", this.order.getSelection());   \r
 292     }\r
 293 \r
 294     @Override\r
 295     public void addKeyListener(KeyListener listener) {\r
 296         this.equation.getSourceViewer().getTextWidget().addKeyListener(listener);\r
 297         this.delayTime.getSourceViewer().getTextWidget().addKeyListener(listener);\r
 298         this.initialValue.getSourceViewer().getTextWidget().addKeyListener(listener);\r
 299     }\r
 300 \r
 301     @Override\r
 302     public void addModifyListener(ModifyListener listener) {\r
 303         this.equation.getSourceViewer().getTextWidget().addModifyListener(listener);\r
 304         this.delayTime.getSourceViewer().getTextWidget().addModifyListener(listener);\r
 305         this.initialValue.getSourceViewer().getTextWidget().addModifyListener(listener);\r
 306     }\r
 307 \r
 308     @Override\r
 309     public void addFocusListener(FocusListener listener) {\r
 310         this.equation.getSourceViewer().getTextWidget().addFocusListener(listener);\r
 311         this.delayTime.getSourceViewer().getTextWidget().addFocusListener(listener);\r
 312         this.initialValue.getSourceViewer().getTextWidget().addFocusListener(listener);\r
 313     }\r
 314 \r
 315     @Override\r
 316     public void addVerifyKeyListener(VerifyKeyListener listener) {\r
 317         this.equation.getSourceViewer().getTextWidget().addVerifyKeyListener(listener);\r
 318         this.delayTime.getSourceViewer().getTextWidget().addVerifyKeyListener(listener);\r
 319         this.initialValue.getSourceViewer().getTextWidget().addVerifyKeyListener(listener);\r
 320     }\r
 321 \r
 322 }\r