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   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11
  12 package net.sourceforge.phpdt.internal.ui.text.spelling;
  13
  14 import java.text.MessageFormat;
  15
  16 import net.sourceforge.phpdt.internal.ui.PHPUIMessages;
  17 import net.sourceforge.phpdt.internal.ui.PHPUiImages;
  18 import net.sourceforge.phpdt.internal.ui.text.java.IInvocationContext;
  19 import net.sourceforge.phpdt.internal.ui.text.java.IPHPCompletionProposal;
  20 import net.sourceforge.phpdt.internal.ui.text.phpdoc.IHtmlTagConstants;
  21
  22 import org.eclipse.jface.text.BadLocationException;
  23 import org.eclipse.jface.text.IDocument;
  24 import org.eclipse.jface.text.contentassist.IContextInformation;
  25 import org.eclipse.swt.graphics.Image;
  26 import org.eclipse.swt.graphics.Point;
  27
  28 /**
  29  * Proposal to correct the incorrectly spelled word.
  30  *
  31  * @since 3.0
  32  */
  33 public class WordCorrectionProposal implements IPHPCompletionProposal, IHtmlTagConstants {
  34
  35         /**
  36          * Returns the html representation of the specified string.
  37          *
  38          * @param string
  39          *                   The string to return the html representation for
  40          * @return The html representation for the string
  41          */
  42         public static String getHtmlRepresentation(final String string) {
  43
  44                 final int length= string.length();
  45                 final StringBuffer buffer= new StringBuffer(string);
  46
  47                 for (int offset= length - 1; offset >= 0; offset--) {
  48
  49                         for (int index= 0; index < HTML_ENTITY_CHARACTERS.length; index++) {
  50
  51                                 if (string.charAt(offset) == HTML_ENTITY_CHARACTERS[index]) {
  52
  53                                         buffer.replace(offset, offset + 1, String.valueOf(HTML_ENTITY_CODES[index]));
  54                                         break;
  55                                 }
  56                         }
  57                 }
  58                 return buffer.toString();
  59         }
  60
  61         /** The invocation context */
  62         private final IInvocationContext fContext;
  63
  64         /** The length in the document */
  65         private final int fLength;
  66
  67         /** The line where to apply the correction */
  68         private final String fLine;
  69
  70         /** The offset in the document */
  71         private final int fOffset;
  72
  73         /** The relevance of this proposal */
  74         private final int fRelevance;
  75
  76         /** The word to complete */
  77         private final String fWord;
  78
  79         /**
  80          * Creates a new word correction proposal.
  81          *
  82          * @param word
  83          *                   The corrected word
  84          * @param arguments
  85          *                   The problem arguments associated with the spelling problem
  86          * @param offset
  87          *                   The offset in the document where to apply the proposal
  88          * @param length
  89          *                   The lenght in the document to apply the proposal
  90          * @param context
  91          *                   The invocation context for this proposal
  92          * @param relevance
  93          *                   The relevance of this proposal
  94          */
  95         public WordCorrectionProposal(final String word, final String[] arguments, final int offset, final int length, final IInvocationContext context, final int relevance) {
  96
  97                 fWord= Character.isUpperCase(arguments[0].charAt(0)) ? Character.toUpperCase(word.charAt(0)) + word.substring(1) : word;
  98
  99                 fOffset= offset;
 100                 fLength= length;
 101                 fContext= context;
 102                 fRelevance= relevance;
 103
 104                 final StringBuffer buffer= new StringBuffer(80);
 105
 106                 buffer.append("...<br>"); //$NON-NLS-1$
 107                 buffer.append(getHtmlRepresentation(arguments[1]));
 108                 buffer.append("<b>"); //$NON-NLS-1$
 109                 buffer.append(getHtmlRepresentation(fWord));
 110                 buffer.append("</b>"); //$NON-NLS-1$
 111                 buffer.append(getHtmlRepresentation(arguments[2]));
 112                 buffer.append("<br>..."); //$NON-NLS-1$
 113
 114                 fLine= buffer.toString();
 115         }
 116
 117         /*
 118          * @see org.eclipse.jface.text.contentassist.ICompletionProposal#apply(org.eclipse.jface.text.IDocument)
 119          */
 120         public final void apply(final IDocument document) {
 121                 try {
 122                         document.replace(fOffset, fLength, fWord);
 123                 } catch (BadLocationException exception) {
 124                         // Do nothing
 125                 }
 126         }
 127
 128         /*
 129          * @see org.eclipse.jface.text.contentassist.ICompletionProposal#getAdditionalProposalInfo()
 130          */
 131         public String getAdditionalProposalInfo() {
 132                 return fLine;
 133         }
 134
 135         /*
 136          * @see org.eclipse.jface.text.contentassist.ICompletionProposal#getContextInformation()
 137          */
 138         public final IContextInformation getContextInformation() {
 139                 return null;
 140         }
 141
 142         /*
 143          * @see org.eclipse.jface.text.contentassist.ICompletionProposal#getDisplayString()
 144          */
 145         public String getDisplayString() {
 146                 return MessageFormat.format(PHPUIMessages.getString("Spelling.correct.label"), new String[] { fWord }); //$NON-NLS-1$
 147         }
 148
 149         /*
 150          * @see org.eclipse.jface.text.contentassist.ICompletionProposal#getImage()
 151          */
 152         public Image getImage() {
 153                 return PHPUiImages.get(PHPUiImages.IMG_CORRECTION_RENAME);
 154         }
 155
 156         /*
 157          * @see org.eclipse.jdt.ui.text.java.IJavaCompletionProposal#getRelevance()
 158          */
 159         public final int getRelevance() {
 160                 return fRelevance;
 161         }
 162
 163         /*
 164          * @see org.eclipse.jface.text.contentassist.ICompletionProposal#getSelection(org.eclipse.jface.text.IDocument)
 165          */
 166         public final Point getSelection(final IDocument document) {
 167
 168                 int offset= fContext.getSelectionOffset();
 169                 int length= fContext.getSelectionLength();
 170
 171                 final int delta= fWord.length() - fLength;
 172                 if (offset <= fOffset && offset + length >= fOffset)
 173                         length += delta;
 174                 else if (offset > fOffset && offset + length > fOffset + fLength) {
 175                         offset += delta;
 176                         length -= delta;
 177                 } else
 178                         length += delta;
 179
 180                 return new Point(offset, length);
 181         }
 182 }