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   1 package net.sourceforge.phpdt.internal.ui.text.java;
   2
   3 /*
   4  * (c) Copyright IBM Corp. 2000, 2001.
   5  * All Rights Reserved.
   6  */
   7
   8
   9 import java.io.IOException;
  10 import java.util.ArrayList;
  11 import java.util.Arrays;
  12 import java.util.Hashtable;
  13 import java.util.List;
  14
  15 import org.eclipse.swt.graphics.Image;
  16 import org.eclipse.swt.graphics.Point;
  17 import org.eclipse.swt.widgets.Shell;
  18
  19 import org.eclipse.jface.dialogs.ErrorDialog;
  20 import org.eclipse.jface.text.IDocument;
  21 import org.eclipse.jface.text.ITextViewer;
  22 import org.eclipse.jface.text.contentassist.ICompletionProposal;
  23 import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
  24 import org.eclipse.jface.text.contentassist.IContextInformation;
  25 import org.eclipse.jface.text.contentassist.IContextInformationExtension;
  26 import org.eclipse.jface.text.contentassist.IContextInformationValidator;
  27
  28 import org.eclipse.ui.IEditorPart;
  29
  30 //import org.eclipse.jdt.core.ICompilationUnit;
  31 //import org.eclipse.jdt.core.JavaCore;
  32 //import org.eclipse.jdt.core.JavaModelException;
  33 //
  34 //import org.eclipse.jdt.ui.IWorkingCopyManager;
  35 //import org.eclipse.jdt.ui.PreferenceConstants;
  36
  37 import net.sourceforge.phpdt.internal.corext.template.ContextType;
  38 import net.sourceforge.phpdt.internal.corext.template.ContextTypeRegistry;
  39 //import org.eclipse.jdt.internal.ui.JavaPlugin;
  40 import net.sourceforge.phpdt.internal.ui.JavaUIMessages;
  41 //import org.eclipse.jdt.internal.ui.text.JavaCodeReader;
  42 import net.sourceforge.phpdt.internal.ui.text.template.TemplateEngine;
  43
  44
  45 /**
  46  * Java completion processor.
  47  */
  48 public class JavaCompletionProcessor_NotInUseVersion implements IContentAssistProcessor {
  49
  50         private static class ContextInformationWrapper implements IContextInformation, IContextInformationExtension {
  51
  52                 private final IContextInformation fContextInformation;
  53                 private int fPosition;
  54
  55                 public ContextInformationWrapper(IContextInformation contextInformation) {
  56                         fContextInformation= contextInformation;
  57                 }
  58
  59                 /*
  60                  * @see IContextInformation#getContextDisplayString()
  61                  */
  62                 public String getContextDisplayString() {
  63                         return fContextInformation.getContextDisplayString();
  64                 }
  65
  66                         /*
  67                  * @see IContextInformation#getImage()
  68                  */
  69                 public Image getImage() {
  70                         return fContextInformation.getImage();
  71                 }
  72
  73                 /*
  74                  * @see IContextInformation#getInformationDisplayString()
  75                  */
  76                 public String getInformationDisplayString() {
  77                         return fContextInformation.getInformationDisplayString();
  78                 }
  79
  80                 /*
  81                  * @see IContextInformationExtension#getContextInformationPosition()
  82                  */
  83                 public int getContextInformationPosition() {
  84                         return fPosition;
  85                 }
  86
  87                 public void setContextInformationPosition(int position) {
  88                         fPosition= position;
  89                 }
  90         };
  91
  92
  93 //      private final static String VISIBILITY= JavaCore.CODEASSIST_VISIBILITY_CHECK;
  94         private final static String ENABLED= "enabled"; //$NON-NLS-1$
  95         private final static String DISABLED= "disabled"; //$NON-NLS-1$
  96
  97
  98
  99         private IEditorPart fEditor;
 100 //      private ResultCollector fCollector;
 101 //      private IWorkingCopyManager fManager;
 102         private IContextInformationValidator fValidator;
 103
 104         private char[] fProposalAutoActivationSet;
 105         private JavaCompletionProposalComparator fComparator;
 106         private boolean fAllowAddImports;
 107
 108         private TemplateEngine fTemplateEngine;
 109 //      private ExperimentalResultCollector fExperimentalCollector;
 110
 111         private int fNumberOfComputedResults= 0;
 112
 113
 114         public JavaCompletionProcessor_NotInUseVersion(IEditorPart editor) {
 115                 fEditor= editor;
 116 //              fCollector= new ResultCollector();
 117 //              fManager= JavaPlugin.getDefault().getWorkingCopyManager();
 118                 ContextType contextType= ContextTypeRegistry.getInstance().getContextType("php"); //$NON-NLS-1$
 119                 if (contextType != null)
 120                         fTemplateEngine= new TemplateEngine(contextType);
 121 //              fExperimentalCollector= new ExperimentalResultCollector();
 122                 fAllowAddImports= true;
 123
 124                 fComparator= new JavaCompletionProposalComparator();
 125         }
 126
 127         /**
 128          * Sets this processor's set of characters triggering the activation of the
 129          * completion proposal computation.
 130          *
 131          * @param activationSet the activation set
 132          */
 133         public void setCompletionProposalAutoActivationCharacters(char[] activationSet) {
 134                 fProposalAutoActivationSet= activationSet;
 135         }
 136
 137         /**
 138          * Tells this processor to restrict its proposal to those element
 139          * visible in the actual invocation context.
 140          *
 141          * @param restrict <code>true</code> if proposals should be restricted
 142          */
 143         public void restrictProposalsToVisibility(boolean restrict) {
 144 //              Hashtable options= JavaCore.getOptions();
 145 //              Object value= options.get(VISIBILITY);
 146 //              if (value instanceof String) {
 147 //                      String newValue= restrict ? ENABLED : DISABLED;
 148 //                      if ( !newValue.equals((String) value)) {
 149 //                              options.put(VISIBILITY, newValue);
 150 //                              JavaCore.setOptions(options);
 151 //                      }
 152 //              }
 153         }
 154
 155         /**
 156          * Tells this processor to order the proposals alphabetically.
 157          *
 158          * @param order <code>true</code> if proposals should be ordered.
 159          */
 160         public void orderProposalsAlphabetically(boolean order) {
 161                 fComparator.setOrderAlphabetically(order);
 162         }
 163
 164         /**
 165          * Tells this processor to restrict is proposals to those
 166          * starting with matching cases.
 167          *
 168          * @param restrict <code>true</code> if proposals should be restricted
 169          */
 170         public void restrictProposalsToMatchingCases(boolean restrict) {
 171                 // not yet supported
 172         }
 173
 174         /**
 175          * Tells this processor to add import statement for proposals that have
 176          * a fully qualified type name
 177          *
 178          * @param restrict <code>true</code> if import can be added
 179          */
 180         public void allowAddingImports(boolean allowAddingImports) {
 181                 fAllowAddImports= allowAddingImports;
 182         }
 183
 184         /**
 185          * @see IContentAssistProcessor#getErrorMessage()
 186          */
 187         public String getErrorMessage() {
 188         //      if (fNumberOfComputedResults == 0)
 189                         return JavaUIMessages.getString("JavaEditor.codeassist.noCompletions"); //$NON-NLS-1$
 190 //              return fCollector.getErrorMessage();
 191         }
 192
 193         /**
 194          * @see IContentAssistProcessor#getContextInformationValidator()
 195          */
 196         public IContextInformationValidator getContextInformationValidator() {
 197 //              if (fValidator == null)
 198 //                      fValidator= new JavaParameterListValidator();
 199                 return fValidator;
 200         }
 201
 202         /**
 203          * @see IContentAssistProcessor#getContextInformationAutoActivationCharacters()
 204          */
 205         public char[] getContextInformationAutoActivationCharacters() {
 206                 return null;
 207         }
 208
 209         /**
 210          * @see IContentAssistProcessor#getCompletionProposalAutoActivationCharacters()
 211          */
 212         public char[] getCompletionProposalAutoActivationCharacters() {
 213                 return fProposalAutoActivationSet;
 214         }
 215
 216 //      private boolean looksLikeMethod(JavaCodeReader reader) throws IOException {
 217 //              int curr= reader.read();
 218 //              while (curr != JavaCodeReader.EOF && Character.isWhitespace((char) curr))
 219 //                      curr= reader.read();
 220 //
 221 //              if (curr == JavaCodeReader.EOF)
 222 //                      return false;
 223 //
 224 //              return Character.isJavaIdentifierPart((char) curr) || Character.isJavaIdentifierStart((char) curr);
 225 //      }
 226
 227         private int guessContextInformationPosition(ITextViewer viewer, int offset) {
 228                 int contextPosition= offset;
 229
 230                 IDocument document= viewer.getDocument();
 231
 232 //              try {
 233 //
 234 //                      JavaCodeReader reader= new JavaCodeReader();
 235 //                      reader.configureBackwardReader(document, offset, true, true);
 236 //
 237 //                      int nestingLevel= 0;
 238 //
 239 //                      int curr= reader.read();
 240 //                      while (curr != JavaCodeReader.EOF) {
 241 //
 242 //                              if (')' == (char) curr)
 243 //                                      ++ nestingLevel;
 244 //
 245 //                              else if ('(' == (char) curr) {
 246 //                                      -- nestingLevel;
 247 //
 248 //                                      if (nestingLevel < 0) {
 249 //                                              int start= reader.getOffset();
 250 //                                              if (looksLikeMethod(reader))
 251 //                                                      return start + 1;
 252 //                                      }
 253 //                              }
 254 //
 255 //                              curr= reader.read();
 256 //                      }
 257 //              } catch (IOException e) {
 258 //              }
 259
 260                 return contextPosition;
 261         }
 262
 263         private List addContextInformations(ITextViewer viewer, int offset) {
 264                 ICompletionProposal[] proposals= internalComputeCompletionProposals(viewer, offset, -1);
 265
 266                 List result= new ArrayList();
 267                 for (int i= 0; i < proposals.length; i++) {
 268                         IContextInformation contextInformation= proposals[i].getContextInformation();
 269                         if (contextInformation != null) {
 270                                 ContextInformationWrapper wrapper= new ContextInformationWrapper(contextInformation);
 271                                 wrapper.setContextInformationPosition(offset);
 272                                 result.add(wrapper);
 273                         }
 274                 }
 275                 return result;
 276         }
 277
 278         /**
 279          * @see IContentAssistProcessor#computeContextInformation(ITextViewer, int)
 280          */
 281         public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) {
 282                 int contextInformationPosition= guessContextInformationPosition(viewer, offset);
 283                 List result= addContextInformations(viewer, contextInformationPosition);
 284                 return (IContextInformation[]) result.toArray(new IContextInformation[result.size()]);
 285         }
 286
 287         /**
 288          * Order the given proposals.
 289          */
 290         private ICompletionProposal[] order(ICompletionProposal[] proposals) {
 291                 Arrays.sort(proposals, fComparator);
 292                 return proposals;
 293         }
 294
 295         /**
 296          * @see IContentAssistProcessor#computeCompletionProposals(ITextViewer, int)
 297          */
 298         public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) {
 299                 int contextInformationPosition= guessContextInformationPosition(viewer, offset);
 300                 return internalComputeCompletionProposals(viewer, offset, contextInformationPosition);
 301         }
 302
 303         private ICompletionProposal[] internalComputeCompletionProposals(ITextViewer viewer, int offset, int contextOffset) {
 304
 305 //              ICompilationUnit unit= fManager.getWorkingCopy(fEditor.getEditorInput());
 306 //              IJavaCompletionProposal[] results;
 307 //
 308 //              if (JavaPlugin.getDefault().getPreferenceStore().getBoolean(PreferenceConstants.CODEASSIST_FILL_ARGUMENT_NAMES)) {
 309 //
 310 //                      try {
 311 //                              if (unit != null) {
 312 //
 313 //                                      fExperimentalCollector.reset(offset, contextOffset, unit.getJavaProject(), fAllowAddImports ? unit : null);
 314 //                                      fExperimentalCollector.setViewer(viewer);
 315 //
 316 //                                      Point selection= viewer.getSelectedRange();
 317 //                                      if (selection.y > 0)
 318 //                                              fExperimentalCollector.setReplacementLength(selection.y);
 319 //
 320 //                                      unit.codeComplete(offset, fExperimentalCollector);
 321 //                              }
 322 //                      } catch (JavaModelException x) {
 323 //                              Shell shell= viewer.getTextWidget().getShell();
 324 //                              ErrorDialog.openError(shell, JavaTextMessages.getString("CompletionProcessor.error.accessing.title"), JavaTextMessages.getString("CompletionProcessor.error.accessing.message"), x.getStatus()); //$NON-NLS-2$ //$NON-NLS-1$
 325 //                      }
 326 //
 327 //                      results= fExperimentalCollector.getResults();
 328 //
 329 //              } else {
 330 //
 331 //                      try {
 332 //                              if (unit != null) {
 333 //
 334 //                                      fCollector.reset(offset, contextOffset, unit.getJavaProject(), fAllowAddImports ? unit : null);
 335 //                                      Point selection= viewer.getSelectedRange();
 336 //                                      if (selection.y > 0)
 337 //                                              fCollector.setReplacementLength(selection.y);
 338 //
 339 //                                      unit.codeComplete(offset, fCollector);
 340 //                              }
 341 //                      } catch (JavaModelException x) {
 342 //                              Shell shell= viewer.getTextWidget().getShell();
 343 //                              ErrorDialog.openError(shell, JavaTextMessages.getString("CompletionProcessor.error.accessing.title"), JavaTextMessages.getString("CompletionProcessor.error.accessing.message"), x.getStatus()); //$NON-NLS-2$ //$NON-NLS-1$
 344 //                      }
 345 //
 346 //                      results= fCollector.getResults();
 347 //              }
 348
 349                 if (fTemplateEngine != null) {
 350           IJavaCompletionProposal[] results;
 351 //                      try {
 352                                 fTemplateEngine.reset();
 353                                 fTemplateEngine.complete(viewer, offset); //, unit);
 354 //                      } catch (JavaModelException x) {
 355 //                              Shell shell= viewer.getTextWidget().getShell();
 356 //                              ErrorDialog.openError(shell, JavaTextMessages.getString("CompletionProcessor.error.accessing.title"), JavaTextMessages.getString("CompletionProcessor.error.accessing.message"), x.getStatus()); //$NON-NLS-2$ //$NON-NLS-1$
 357 //                      }
 358
 359                         IJavaCompletionProposal[] templateResults= fTemplateEngine.getResults();
 360
 361                         // concatenate arrays
 362                         IJavaCompletionProposal[] total= new IJavaCompletionProposal[templateResults.length]; // +results.length ];
 363                         System.arraycopy(templateResults, 0, total, 0, templateResults.length);
 364 //                      System.arraycopy(results, 0, total, templateResults.length, results.length);
 365                         results= total;
 366 //              }
 367
 368                 fNumberOfComputedResults= (results == null ? 0 : results.length);
 369
 370                 /*
 371                  * Order here and not in result collector to make sure that the order
 372                  * applies to all proposals and not just those of the compilation unit.
 373                  */
 374                 return order(results);
 375     }
 376     return new IJavaCompletionProposal[0];
 377         }
 378 }