net.mograsim.plugin.core/src/net/mograsim/plugin/asm/editor/AsmContentAssistProcessor.java

   1 package net.mograsim.plugin.asm.editor;
   2
   3 import org.eclipse.core.resources.IWorkspace;
   4 import org.eclipse.core.resources.ResourcesPlugin;
   5 import org.eclipse.jface.text.BadLocationException;
   6 import org.eclipse.jface.text.IDocument;
   7 import org.eclipse.jface.text.ITextViewer;
   8 import org.eclipse.jface.text.contentassist.ICompletionProposal;
   9 import org.eclipse.jface.text.contentassist.ICompletionProposalExtension4;
  10 import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
  11 import org.eclipse.jface.text.contentassist.IContextInformation;
  12 import org.eclipse.jface.text.contentassist.IContextInformationValidator;
  13 import org.eclipse.swt.graphics.Image;
  14 import org.eclipse.swt.graphics.Point;
  15
  16 public class AsmContentAssistProcessor implements IContentAssistProcessor
  17 {
  18
  19         @Override
  20         public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset)
  21         {
  22                 String text = viewer.getDocument().get();
  23                 IWorkspace workspace = ResourcesPlugin.getWorkspace();
  24 //              if (text.length() >= natureTag.length()
  25 //                              && text.substring(offset - natureTag.length(), offset).equals(natureTag)) {
  26 //                      IProjectNatureDescriptor[] natureDescriptors = workspace.getNatureDescriptors();
  27 //                      ICompletionProposal[] proposals = new ICompletionProposal[natureDescriptors.length];
  28 //                      for (int i = 0; i < natureDescriptors.length; i++) {
  29 //                              IProjectNatureDescriptor descriptor = natureDescriptors[i];
  30 //                              proposals[i] = new CompletionProposal(descriptor.getNatureId(), offset, 0,
  31 //                                              descriptor.getNatureId().length());
  32 //                      }
  33 //                      return proposals;
  34 //              }
  35 //              if (text.length() >= projectReferenceTag.length()
  36 //                              && text.substring(offset - projectReferenceTag.length(), offset).equals(projectReferenceTag)) {
  37 //                      IProject[] projects = workspace.getRoot().getProjects();
  38 //                      ICompletionProposal[] proposals = new ICompletionProposal[projects.length];
  39 //                      for (int i = 0; i < projects.length; i++) {
  40 //                              proposals[i] = new CompletionProposal(projects[i].getName(), offset, 0, projects[i].getName().length());
  41 //                      }
  42 //                      return proposals;
  43 //              }
  44 //              return new ICompletionProposal[0];
  45 //              text.
  46                 return new ICompletionProposal[] { new AsmOperationProposal("ADD", "Addition operation", offset),
  47                                 new AsmOperationProposal("MUL", "Multiplication operation", offset) };
  48         }
  49
  50         @Override
  51         public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset)
  52         {
  53                 return null;
  54         }
  55
  56         @Override
  57         public char[] getCompletionProposalAutoActivationCharacters()
  58         {
  59                 return new char[] { '\t' }; // NON-NLS-1
  60         }
  61
  62         @Override
  63         public char[] getContextInformationAutoActivationCharacters()
  64         {
  65                 return null;
  66         }
  67
  68         @Override
  69         public String getErrorMessage()
  70         {
  71                 return null;
  72         }
  73
  74         @Override
  75         public IContextInformationValidator getContextInformationValidator()
  76         {
  77                 return null;
  78         }
  79
  80         private class AsmOperationProposal implements ICompletionProposal, ICompletionProposalExtension4
  81         {
  82
  83                 private String asmOp;
  84                 private String desc;
  85                 private int offset;
  86
  87                 public AsmOperationProposal(String asmOp, String desc, int offset)
  88                 {
  89                         this.asmOp = asmOp;
  90                         this.desc = desc;
  91                         this.offset = offset;
  92                 }
  93
  94                 @Override
  95                 public boolean isAutoInsertable()
  96                 {
  97                         return true;
  98                 }
  99
 100                 @Override
 101                 public void apply(IDocument document)
 102                 {
 103                         try
 104                         {
 105                                 document.replace(offset, 0, asmOp);
 106                         }
 107                         catch (BadLocationException e)
 108                         {
 109                                 // ignore
 110                         }
 111                 }
 112
 113                 @Override
 114                 public Point getSelection(IDocument document)
 115                 {
 116                         return new Point(offset + asmOp.length(), 0);
 117                 }
 118
 119                 @Override
 120                 public String getAdditionalProposalInfo()
 121                 {
 122                         return desc;
 123                 }
 124
 125                 @Override
 126                 public String getDisplayString()
 127                 {
 128                         return asmOp;
 129                 }
 130
 131                 @Override
 132                 public Image getImage()
 133                 {
 134                         return null; // TODO image?
 135                 }
 136
 137                 @Override
 138                 public IContextInformation getContextInformation()
 139                 {
 140                         return new IContextInformation()
 141                         {
 142
 143                                 @Override
 144                                 public String getInformationDisplayString()
 145                                 {
 146                                         // TODO Auto-generated method stub
 147                                         return null;
 148                                 }
 149
 150                                 @Override
 151                                 public Image getImage()
 152                                 {
 153                                         // TODO Auto-generated method stub
 154                                         return null;
 155                                 }
 156
 157                                 @Override
 158                                 public String getContextDisplayString()
 159                                 {
 160                                         // TODO Auto-generated method stub
 161                                         return null;
 162                                 }
 163                         };
 164                 }
 165
 166         }
 167
 168 }