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