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