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