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