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Viewing changes to results/plugins/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/text/doctools/generic/GenericTagCompletionProposalComputer.java

  • Committer: Package Import Robot
  • Author(s): Jakub Adam
  • Date: 2011-10-06 21:15:04 UTC
  • mfrom: (1.1.4)
  • Revision ID: package-import@ubuntu.com-20111006211504-8dutmljjih0zikfv
Tags: 8.0.1-1
* New upstream release.
* Split the JNI packages into a separate architecture dependent
  package and made eclipse-cdt architecture independent.
* Install JNI libraries into multiarch aware location
* Bumped Standards-Version to 3.9.2.

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results/plugins/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/text/doctools/generic/GenericTagCompletionProposalComputer.java
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/*******************************************************************************
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 * Copyright (c) 2008, 2009 Symbian Software Systems and others.
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 * All rights reserved. This program and the accompanying materials
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 * are made available under the terms of the Eclipse Public License v1.0
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 * which accompanies this distribution, and is available at
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 * http://www.eclipse.org/legal/epl-v10.html
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 *
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 * Contributors:
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 * Andrew Ferguson (Symbian) - Initial implementation
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 *******************************************************************************/
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package org.eclipse.cdt.ui.text.doctools.generic;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import org.eclipse.core.runtime.IProgressMonitor;
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import org.eclipse.jface.text.BadLocationException;
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import org.eclipse.jface.text.IDocument;
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import org.eclipse.jface.text.ITypedRegion;
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import org.eclipse.jface.text.TextUtilities;
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import org.eclipse.jface.text.contentassist.ICompletionProposal;
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import org.eclipse.jface.text.contentassist.IContextInformation;
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import org.eclipse.cdt.ui.text.ICPartitions;
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import org.eclipse.cdt.ui.text.contentassist.ContentAssistInvocationContext;
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import org.eclipse.cdt.ui.text.contentassist.ICompletionProposalComputer;
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import org.eclipse.cdt.internal.ui.text.contentassist.CCompletionProposal;
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/**
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 * CompletionProposalComputer based on a specified set of GenericTag objects.
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 * @since 5.0
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 * @noextend This class is not intended to be subclassed by clients.
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 */
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public class GenericTagCompletionProposalComputer implements ICompletionProposalComputer {
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        protected GenericDocTag[] tags;
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        protected char[] tagMarkers;
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        /**
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         * Constructs a proposal computer for the specified tags
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         * @param tags
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         */
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        public GenericTagCompletionProposalComputer(GenericDocTag[] tags, char[] tagMarkers) {
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                this.tags= tags;
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                this.tagMarkers= tagMarkers;
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        }
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        /**
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         * @param c the character to test
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         * @return whether the specified character is a tag prefix marker 
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         */
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        protected boolean isTagMarker(char c) {
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                for(char candidate : tagMarkers)
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                        if(c == candidate)
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                                return true;
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                return false;
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        }
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        /*
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         * @see org.eclipse.cdt.ui.text.contentassist.ICompletionProposalComputer#computeCompletionProposals(org.eclipse.cdt.ui.text.contentassist.ContentAssistInvocationContext, org.eclipse.core.runtime.IProgressMonitor)
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         */
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        public List<ICompletionProposal> computeCompletionProposals(ContentAssistInvocationContext context, IProgressMonitor monitor) {
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                IDocument doc= context.getDocument();
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                int ivcOffset= context.getInvocationOffset();
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                try {
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                        ITypedRegion tr= TextUtilities.getPartition(doc, ICPartitions.C_PARTITIONING, ivcOffset, false);
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                        int firstNonWS= ivcOffset;
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                        while(firstNonWS-1> tr.getOffset() && !Character.isWhitespace(doc.get(firstNonWS-1, 1).charAt(0)))
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                                firstNonWS--;
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                        String prefix= doc.get(firstNonWS, ivcOffset-firstNonWS);
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                        if(prefix.length()>0 && isTagMarker(prefix.charAt(0))) {
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                                List<ICompletionProposal> proposals= new ArrayList<ICompletionProposal>();
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                                char tagMarker= prefix.charAt(0);
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                                for (GenericDocTag tag2 : tags) {
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                                        String tag= tag2.getTagName();
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                                        if(tag.toLowerCase().startsWith(prefix.substring(1).toLowerCase())) {                                           
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                                                CCompletionProposal proposal= new CCompletionProposal(tagMarker+tag, ivcOffset-prefix.length(), prefix.length(), null, tagMarker+tag, 1, context.getViewer()); 
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                                                String description= tag2.getTagDescription();
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                                                if(description!=null && description.length()>0) {
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                                                        proposal.setAdditionalProposalInfo(description);
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                                                }
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                                                proposals.add(proposal);
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                                        }
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                                }
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                                return proposals;
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                        }
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                } catch(BadLocationException ble) {
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                        // offset is zero, ignore
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                }
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                return Collections.emptyList();
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        }
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        /*
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         * @see org.eclipse.cdt.ui.text.contentassist.ICompletionProposalComputer#computeContextInformation(org.eclipse.cdt.ui.text.contentassist.ContentAssistInvocationContext, org.eclipse.core.runtime.IProgressMonitor)
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         */
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        public List<IContextInformation> computeContextInformation(ContentAssistInvocationContext context, IProgressMonitor monitor) {
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                return Collections.emptyList();
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        }
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        /*
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         * @see org.eclipse.cdt.ui.text.contentassist.ICompletionProposalComputer#getErrorMessage()
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         */
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        public String getErrorMessage() {
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                return null;
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        }
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        /*
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         * @see org.eclipse.cdt.ui.text.contentassist.ICompletionProposalComputer#sessionEnded()
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         */
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        public void sessionEnded() {}
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        /*
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         * @see org.eclipse.cdt.ui.text.contentassist.ICompletionProposalComputer#sessionStarted()
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         */
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        public void sessionStarted() {}
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}