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 org.eclipse.jface.internal.text.html.HTMLTextPresenter;\r
  15 import org.eclipse.jface.text.DefaultInformationControl;\r
  16 import org.eclipse.jface.text.DefaultTextHover;\r
  17 import org.eclipse.jface.text.IDocument;\r
  18 import org.eclipse.jface.text.IInformationControl;\r
  19 import org.eclipse.jface.text.IInformationControlCreator;\r
  20 import org.eclipse.jface.text.ITextHover;\r
  21 import org.eclipse.jface.text.TextAttribute;\r
  22 import org.eclipse.jface.text.contentassist.ContentAssistEvent;\r
  23 import org.eclipse.jface.text.contentassist.ContentAssistant;\r
  24 import org.eclipse.jface.text.contentassist.ICompletionListener;\r
  25 import org.eclipse.jface.text.contentassist.ICompletionProposal;\r
  26 import org.eclipse.jface.text.contentassist.IContentAssistant;\r
  27 import org.eclipse.jface.text.presentation.IPresentationReconciler;\r
  28 import org.eclipse.jface.text.presentation.PresentationReconciler;\r
  29 import org.eclipse.jface.text.rules.DefaultDamagerRepairer;\r
  30 import org.eclipse.jface.text.rules.IRule;\r
  31 import org.eclipse.jface.text.rules.ITokenScanner;\r
  32 import org.eclipse.jface.text.rules.IWordDetector;\r
  33 import org.eclipse.jface.text.rules.MultiLineRule;\r
  34 import org.eclipse.jface.text.rules.RuleBasedScanner;\r
  35 import org.eclipse.jface.text.rules.Token;\r
  36 import org.eclipse.jface.text.rules.WordRule;\r
  37 import org.eclipse.jface.text.source.DefaultAnnotationHover;\r
  38 import org.eclipse.jface.text.source.IAnnotationHover;\r
  39 import org.eclipse.jface.text.source.ISourceViewer;\r
  40 import org.eclipse.jface.text.source.SourceViewerConfiguration;\r
  41 import org.eclipse.swt.SWT;\r
  42 import org.eclipse.swt.graphics.RGB;\r
  43 import org.eclipse.swt.widgets.Shell;\r
  44 import org.eclipse.swt.widgets.Table;\r
  45 import org.simantics.sysdyn.ui.utils.VariableNameUtils;\r
  46 \r
  47 @SuppressWarnings("restriction")\r
  48 public class ExpressionFieldConfiguration extends SourceViewerConfiguration {\r
  49 \r
  50         private final long WAIT_BEFORE_STATUS_CHANGE = 100;\r
  51         \r
  52         ColorManager colorManager;\r
  53         Table allowedVariables;\r
  54         boolean allowFunctions;\r
  55         boolean assistSessionActive; \r
  56         CompletionProcessor completionProcessor;\r
  57         \r
  58         public ExpressionFieldConfiguration(ColorManager colorManager, Table allowedVariables, boolean allowFunctions) {\r
  59                 super();\r
  60                 this.colorManager = colorManager;\r
  61                 this.allowedVariables = allowedVariables;\r
  62                 this.allowFunctions = allowFunctions;\r
  63                 this.assistSessionActive = false;\r
  64                 this.completionProcessor = null;\r
  65         }\r
  66         \r
  67         public boolean isAssistSessionActive() {\r
  68                 return assistSessionActive;\r
  69         }\r
  70         \r
  71         @Override\r
  72     public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {\r
  73                 return new String[] {\r
  74                                 IDocument.DEFAULT_CONTENT_TYPE\r
  75                 };\r
  76         }\r
  77 \r
  78         @Override\r
  79     public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {\r
  80                 PresentationReconciler reconciler = new PresentationReconciler();\r
  81 \r
  82                 DefaultDamagerRepairer dr = new DefaultDamagerRepairer(getSclTokenScanner());\r
  83 \r
  84                 reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);\r
  85                 reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);\r
  86 \r
  87                 return reconciler;\r
  88         }\r
  89 \r
  90 \r
  91         ITokenScanner getSclTokenScanner() {\r
  92                 RuleBasedScanner scanner = new RuleBasedScanner();\r
  93 \r
  94                 final Token reserved = new Token(\r
  95                                 new TextAttribute(\r
  96                                                 colorManager.getColor(new RGB(127, 0, 85)),\r
  97                                                 null,\r
  98                                                 SWT.BOLD\r
  99                                 ));\r
 100             final Token defaultToken = new Token(new TextAttribute(colorManager.getColor(new RGB(0, 0, 0))));\r
 101 \r
 102                  final Token comment = new Token(new TextAttribute(colorManager.getColor(new RGB(63, 127, 95))));\r
 103 \r
 104 \r
 105                 WordRule reservedWord = new WordRule(new IWordDetector() {   \r
 106                         @Override\r
 107                         public boolean isWordStart(char c) {\r
 108                                 return Character.isLetter(c);\r
 109                         }\r
 110 \r
 111                         @Override\r
 112                         public boolean isWordPart(char c) {\r
 113                                 return Character.isLetter(c);\r
 114                         }\r
 115                 }, defaultToken);\r
 116                 \r
 117 \r
 118                 for(String s : VariableNameUtils.keywords) {\r
 119                         reservedWord.addWord(s, reserved);\r
 120                 }\r
 121 \r
 122                 IRule[] rules = new IRule[] {\r
 123                                 reservedWord,\r
 124                                 new MultiLineRule("/*", "*/", comment),\r
 125                                 new MultiLineRule("\"", "\"", comment)\r
 126                 };\r
 127                 scanner.setRules(rules);\r
 128 \r
 129                 return scanner;  \r
 130         }\r
 131 \r
 132         @Override\r
 133         public ITextHover getTextHover(ISourceViewer sourceViewer, String contentType) {\r
 134                 return new DefaultTextHover(sourceViewer);\r
 135         }\r
 136 \r
 137         @Override\r
 138         public IAnnotationHover getAnnotationHover(ISourceViewer sourceViewer) {\r
 139                 return new DefaultAnnotationHover();\r
 140         }\r
 141 \r
 142         @Override\r
 143         public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {\r
 144                 ContentAssistant assistant = new ContentAssistant();\r
 145                 completionProcessor = new CompletionProcessor(allowedVariables, allowFunctions);\r
 146                 assistant.setContentAssistProcessor(completionProcessor, IDocument.DEFAULT_CONTENT_TYPE);\r
 147                 assistant.enableAutoActivation(true);\r
 148                 assistant.setInformationControlCreator(getInformationControlCreator(sourceViewer));\r
 149                 assistant.enableAutoInsert(true);\r
 150                 assistant.setAutoActivationDelay(0);\r
 151                 assistant.setProposalPopupOrientation(IContentAssistant.PROPOSAL_OVERLAY);\r
 152                 assistant.setContextInformationPopupOrientation(IContentAssistant.CONTEXT_INFO_ABOVE);\r
 153                 assistant.addCompletionListener(new CompletionListener());\r
 154                 return assistant;\r
 155         }\r
 156         \r
 157     @Override\r
 158     public IInformationControlCreator getInformationControlCreator(ISourceViewer sourceViewer) {\r
 159         return new IInformationControlCreator() {\r
 160             @Override\r
 161             public IInformationControl createInformationControl(Shell parent) {\r
 162                 return new DefaultInformationControl(parent,new HTMLTextPresenter(false));\r
 163             }\r
 164         };\r
 165     }\r
 166         \r
 167         private class CompletionListener implements ICompletionListener {\r
 168 \r
 169                 @Override\r
 170                 public void assistSessionStarted(ContentAssistEvent event) {\r
 171                         if (event.processor.equals(completionProcessor)) {\r
 172                                 assistSessionActive = true;\r
 173                         }\r
 174                 }\r
 175 \r
 176                 @Override\r
 177                 public void assistSessionEnded(ContentAssistEvent event) {\r
 178                         if (event.processor.equals(completionProcessor)) {\r
 179                                 Thread waitBeforeStateChange = new Thread() {\r
 180                                         @Override\r
 181                     public void run() {\r
 182                                                 try {\r
 183                                                         sleep(WAIT_BEFORE_STATUS_CHANGE);\r
 184                                                         assistSessionActive = false;\r
 185                                                 } catch (InterruptedException e) {\r
 186                                                         assistSessionActive = false;\r
 187                                                 }\r
 188                                         }\r
 189                                 };\r
 190                                 waitBeforeStateChange.start();\r
 191                         }\r
 192                 }\r
 193 \r
 194                 @Override\r
 195                 public void selectionChanged(ICompletionProposal proposal,\r
 196                                 boolean smartToggle) {\r
 197                 }\r
 198                 \r
 199         }\r
 200         \r
 201 }\r