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/*******************************************************************************
* Copyright (c) 2016, 2017 Red Hat Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* - Mickael Istria, Sopot Cela (Red Hat Inc.)
*******************************************************************************/
package org.eclipse.ui.genericeditor.examples.dotproject;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectNatureDescriptor;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.contentassist.CompletionProposal;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.jface.text.contentassist.IContextInformationValidator;
public class NaturesAndProjectsContentAssistProcessor implements IContentAssistProcessor {
@Override
public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) {
String text = viewer.getDocument().get();
String natureTag= "<nature>";
String projectReferenceTag="<project>";
IWorkspace workspace = ResourcesPlugin.getWorkspace();
int natureTagLength = natureTag.length();
if (text.length() >= natureTagLength && offset >= natureTagLength && text.substring(offset - natureTagLength, offset).equals(natureTag)) {
IProjectNatureDescriptor[] natureDescriptors= workspace.getNatureDescriptors();
ICompletionProposal[] proposals = new ICompletionProposal[natureDescriptors.length];
for (int i= 0; i < natureDescriptors.length; i++) {
IProjectNatureDescriptor descriptor= natureDescriptors[i];
proposals[i] = new CompletionProposal(descriptor.getNatureId(), offset, 0, descriptor.getNatureId().length());
}
return proposals;
}
int projectReferenceTagLength = projectReferenceTag.length();
if (text.length() >= projectReferenceTagLength && offset >= projectReferenceTagLength && text.substring(offset - projectReferenceTagLength, offset).equals(projectReferenceTag)) {
IProject[] projects= workspace.getRoot().getProjects();
//TODO - filter out the project this file is in
ICompletionProposal[] proposals = new ICompletionProposal[projects.length];
for (int i= 0; i < projects.length; i++) {
proposals[i]=new CompletionProposal(projects[i].getName(), offset, 0, projects[i].getName().length());
}
return proposals;
}
return new ICompletionProposal[0];
}
@Override
public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) {
return null;
}
@Override
public char[] getCompletionProposalAutoActivationCharacters() {
return null;
}
@Override
public char[] getContextInformationAutoActivationCharacters() {
return null;
}
@Override
public String getErrorMessage() {
return null;
}
@Override
public IContextInformationValidator getContextInformationValidator() {
return null;
}
}
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