net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/text/template/DeclarationProposal.java

   1 /*
   2  * (c) Copyright IBM Corp. 2000, 2001.
   3  * All Rights Reserved.
   4  */
   5 package net.sourceforge.phpdt.internal.ui.text.template;
   6
   7 import net.sourceforge.phpdt.internal.corext.phpdoc.PHPDocUtil;
   8 import net.sourceforge.phpdt.internal.corext.template.TemplateMessages;
   9 import net.sourceforge.phpdt.internal.corext.template.php.JavaContext;
  10 import net.sourceforge.phpdt.internal.ui.PHPUiImages;
  11 import net.sourceforge.phpdt.internal.ui.text.link.LinkedPositionManager;
  12 import net.sourceforge.phpdt.internal.ui.text.link.LinkedPositionUI;
  13 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  14 import net.sourceforge.phpeclipse.builder.PHPIdentifierLocation;
  15
  16 import org.eclipse.core.resources.IProject;
  17 import org.eclipse.jface.text.BadLocationException;
  18 import org.eclipse.jface.text.IDocument;
  19 import org.eclipse.jface.text.IRegion;
  20 import org.eclipse.jface.text.ITextViewer;
  21 import org.eclipse.jface.text.contentassist.ContextInformation;
  22 import org.eclipse.jface.text.contentassist.IContextInformation;
  23 import org.eclipse.jface.text.templates.TemplateContext;
  24 import org.eclipse.swt.graphics.Image;
  25
  26 // import net.sourceforge.phpdt.internal.ui.text.link.LinkedPositionManager;
  27 // import net.sourceforge.phpdt.internal.ui.text.link.LinkedPositionUI;
  28 // import net.sourceforge.phpdt.internal.ui.util.ExceptionHandler;
  29
  30 /**
  31  * A PHP identifier proposal.
  32  */
  33 public class DeclarationProposal extends AbstractProposal { // implements
  34         // IPHPCompletionProposal
  35         // {
  36         private IProject fProject;
  37
  38         private final TemplateContext fContext;
  39
  40         private final PHPIdentifierLocation fLocation;
  41
  42         String fInfo;
  43
  44         // private TemplateBuffer fTemplateBuffer;
  45         // private String fOldText;
  46         // private final Image fImage_fun;
  47         // private final Image fImage_var;
  48         private final IRegion fRegion;
  49
  50         // private IRegion fSelectedRegion; // initialized by apply()
  51
  52         private final String fIdentifierName;
  53
  54         // private final ITextViewer fViewer;
  55
  56         /**
  57          * Creates a template proposal with a template and its context.
  58          *
  59          * @param template
  60          *            the template
  61          * @param context
  62          *            the context in which the template was requested.
  63          * @param image
  64          *            the icon of the proposal.
  65          */
  66         public DeclarationProposal(IProject project, String identifierName,
  67                         PHPIdentifierLocation location, TemplateContext context,
  68                         IRegion region, ITextViewer viewer) {
  69                 super(viewer);
  70                 // Image image_fun,
  71                 // Image image_var) {
  72                 fProject = project;
  73                 fIdentifierName = identifierName;
  74                 fLocation = location;
  75                 fContext = context;
  76                 fRegion = region;
  77                 fInfo = null;
  78         }
  79
  80         /*
  81          * @see ICompletionProposal#apply(IDocument)
  82          */
  83         public void apply(IDocument document) {
  84                 try {
  85                         // if (fTemplateBuffer == null)
  86                         // fTemplateBuffer= fContext.evaluate(fTemplate);
  87
  88                         int start = fRegion.getOffset();
  89                         int end = fRegion.getOffset() + fRegion.getLength();
  90
  91                         switch (fLocation.getType()) {
  92                         case PHPIdentifierLocation.FUNCTION:
  93                                 document.replace(start, end - start, fIdentifierName + "()");
  94                                 break;
  95                         case PHPIdentifierLocation.CONSTRUCTOR:
  96                                 document.replace(start, end - start, fIdentifierName + "()");
  97                                 break;
  98                         case PHPIdentifierLocation.METHOD:
  99                                 document.replace(start, end - start, fIdentifierName + "()");
 100                                 break;
 101
 102                         default:
 103                                 document.replace(start, end - start, fIdentifierName);
 104                         }
 105
 106                         // translate positions
 107                         LinkedPositionManager manager = new LinkedPositionManager(document);
 108                         // TemplatePosition[] variables= fTemplateBuffer.getVariables();
 109                         // for (int i= 0; i != variables.length; i++) {
 110                         // TemplatePosition variable= variables[i];
 111                         //
 112                         // if (variable.isResolved())
 113                         // continue;
 114                         //
 115                         // int[] offsets= variable.getOffsets();
 116                         // int length= variable.getLength();
 117                         //
 118                         // for (int j= 0; j != offsets.length; j++)
 119                         // manager.addPosition(offsets[j] + start, length);
 120                         // }
 121
 122                         LinkedPositionUI editor = new LinkedPositionUI(fViewer, manager);
 123                         switch (fLocation.getType()) {
 124                         case PHPIdentifierLocation.FUNCTION:
 125                                 editor
 126                                                 .setFinalCaretOffset(fIdentifierName.length() + start
 127                                                                 + 1);
 128                                 break;
 129                         case PHPIdentifierLocation.CONSTRUCTOR:
 130                                 editor
 131                                                 .setFinalCaretOffset(fIdentifierName.length() + start
 132                                                                 + 1);
 133                                 break;
 134                         case PHPIdentifierLocation.METHOD:
 135                                 editor
 136                                                 .setFinalCaretOffset(fIdentifierName.length() + start
 137                                                                 + 1);
 138                                 break;
 139
 140                         default:
 141                                 editor.setFinalCaretOffset(fIdentifierName.length() + start);
 142                         }
 143                         editor.enter();
 144
 145                         fSelectedRegion = editor.getSelectedRegion();
 146
 147                 } catch (BadLocationException e) {
 148                         PHPeclipsePlugin.log(e);
 149                         openErrorDialog(e);
 150
 151                 }
 152                 // catch (CoreException e) {
 153                 // handleException(e);
 154                 // }
 155         }
 156
 157         /*
 158          * @see ICompletionProposal#getAdditionalProposalInfo()
 159          */
 160         public String getAdditionalProposalInfo() {
 161                 if (fInfo == null) {
 162                         fInfo = computeProposalInfo();
 163                 }
 164                 return fInfo;
 165         }
 166
 167         private String computeProposalInfo() {
 168                 StringBuffer hoverInfoBuffer = new StringBuffer();
 169                 // String workspaceLocation =
 170                 // PHPeclipsePlugin.getWorkspace().getRoot().getLocation().toString();
 171                 String workspaceLocation;
 172                 if (fProject != null) {
 173                         workspaceLocation = fProject.getLocation().toString() + '/';
 174                 } else {
 175                         // should never happen?
 176                         workspaceLocation = PHPeclipsePlugin.getWorkspace().getRoot()
 177                                         .getLocation().toString();
 178                 }
 179                 String filename = workspaceLocation + fLocation.getFilename();
 180                 PHPDocUtil.appendPHPDoc(hoverInfoBuffer, filename, fLocation);
 181                 return hoverInfoBuffer.toString();
 182         }
 183
 184         public IContextInformation getContextInformation() {
 185                 if (fContextInfo == null) {
 186                         if (fLocation != null) {
 187                                 fInfo = fLocation.getUsage();
 188                                 if (fInfo != null) {
 189                                         // extract the parameter context information for the
 190                                         // function:
 191                                         int i0 = fInfo.indexOf('(');
 192                                         int newline = fInfo.indexOf('\n');
 193                                         if (i0 >= 0 && (i0 < newline || newline < 0)) {
 194                                                 int i1 = fInfo.indexOf(')', i0 + 1);
 195                                                 if (i1 > 0) {
 196
 197                                                         fContextInfo = new ContextInformation(null, fInfo
 198                                                                         .substring(i0 + 1, i1));
 199                                                 } else {
 200                                                         fContextInfo = new ContextInformation(null, fInfo);
 201                                                 }
 202                                         } else {
 203                                                 fContextInfo = new ContextInformation(null, fInfo);
 204                                         }
 205                                 }
 206                         }
 207                 }
 208                 return fContextInfo;
 209         }
 210
 211         /*
 212          * @see ICompletionProposal#getDisplayString()
 213          */
 214         public String getDisplayString() {
 215                 String workspaceLocation;
 216                 if (fProject != null) {
 217                         workspaceLocation = fProject.getName().toString() + '/';
 218                 } else {
 219                         // should never happen?
 220                         workspaceLocation = PHPeclipsePlugin.getWorkspace().getRoot()
 221                                         .getLocation().toString();
 222                 }
 223                 String filename = workspaceLocation + fLocation.getFilename();
 224                 String usage = PHPDocUtil.getUsage(filename, fLocation);
 225                 String result = fIdentifierName
 226                                 + TemplateMessages.getString("TemplateProposal.delimiter");
 227                 if (usage.length() > 0) {
 228                         result += usage
 229                                         + TemplateMessages.getString("TemplateProposal.delimiter");
 230                 }
 231                 result += filename;
 232                 return result;
 233         }
 234
 235         /*
 236          * @see ICompletionProposal#getImage()
 237          */
 238         public Image getImage() {
 239                 switch (fLocation.getType()) {
 240                 case PHPIdentifierLocation.FUNCTION:
 241                         return PHPUiImages.get(PHPUiImages.IMG_FUN);
 242                 case PHPIdentifierLocation.CLASS:
 243                         return PHPUiImages.get(PHPUiImages.IMG_CLASS);
 244                 case PHPIdentifierLocation.CONSTRUCTOR:
 245                         return PHPUiImages.get(PHPUiImages.IMG_CLASS);
 246                 case PHPIdentifierLocation.METHOD:
 247                         return PHPUiImages.get(PHPUiImages.IMG_FUN);
 248                 case PHPIdentifierLocation.DEFINE:
 249                         return PHPUiImages.get(PHPUiImages.IMG_DEFINE);
 250                 case PHPIdentifierLocation.VARIABLE:
 251                         return PHPUiImages.get(PHPUiImages.IMG_VAR);
 252                 case PHPIdentifierLocation.GLOBAL_VARIABLE:
 253                         return PHPUiImages.get(PHPUiImages.IMG_VAR);
 254                 }
 255                 return PHPUiImages.get(PHPUiImages.IMG_FUN);
 256         }
 257
 258         /*
 259          * @see IJavaCompletionProposal#getRelevance()
 260          */
 261         public int getRelevance() {
 262
 263                 if (fContext instanceof JavaContext) {
 264                         JavaContext context = (JavaContext) fContext;
 265                         switch (context.getCharacterBeforeStart()) {
 266                         // high relevance after whitespace
 267                         case ' ':
 268                         case '\r':
 269                         case '\n':
 270                         case '\t':
 271                                 return 80;
 272                         case '>': // ->
 273                         case ':': // ::
 274                                 return 85;
 275                         default:
 276                                 return 0;
 277                         }
 278                 } else {
 279                         return 80;
 280                 }
 281         }
 282
 283 }