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/*******************************************************************************
* Copyright (c) 2000, 2015 QNX Software Systems and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* QNX Software Systems - Initial API and implementation
* Red Hat Inc. - convert to use with Automake editor
*******************************************************************************/
package org.eclipse.cdt.internal.autotools.ui.editors.automake;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import org.eclipse.cdt.internal.autotools.ui.MakeUIImages;
import org.eclipse.cdt.make.core.makefile.IDirective;
import org.eclipse.cdt.make.core.makefile.IMacroDefinition;
import org.eclipse.cdt.make.core.makefile.IMakefile;
import org.eclipse.cdt.make.core.makefile.IRule;
import org.eclipse.cdt.make.ui.IWorkingCopyManager;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.TextPresentation;
import org.eclipse.jface.text.contentassist.CompletionProposal;
import org.eclipse.jface.text.contentassist.ContextInformation;
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.IContextInformationPresenter;
import org.eclipse.jface.text.contentassist.IContextInformationValidator;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.IEditorPart;
/**
* MakefileCompletionProcessor
*/
public class MakefileCompletionProcessor implements IContentAssistProcessor {
/**
* Simple content assist tip closer. The tip is valid in a range
* of 5 characters around its popup location.
*/
protected static class Validator implements IContextInformationValidator, IContextInformationPresenter {
protected int fInstallOffset;
@Override
public boolean isContextInformationValid(int offset) {
return Math.abs(fInstallOffset - offset) < 5;
}
@Override
public void install(IContextInformation info, ITextViewer viewer, int offset) {
fInstallOffset = offset;
}
@Override
public boolean updatePresentation(int documentPosition, TextPresentation presentation) {
return false;
}
}
public static class DirectiveComparator implements Comparator<Object>{
@Override
public int compare(Object o1, Object o2) {
String name1;
String name2;
if (o1 instanceof IMacroDefinition) {
name1 = ((IMacroDefinition)o1).getName();
} else if (o1 instanceof IRule) {
name1 = ((IRule)o1).getTarget().toString();
} else {
name1 =""; //$NON-NLS-1$
}
if (o2 instanceof IMacroDefinition) {
name2 = ((IMacroDefinition)o1).getName();
} else if (o2 instanceof IRule) {
name2 = ((IRule)o1).getTarget().toString();
} else {
name2 =""; //$NON-NLS-1$
}
//return String.CASE_INSENSITIVE_ORDER.compare(name1, name2);
return name1.compareToIgnoreCase(name2);
}
}
protected IContextInformationValidator fValidator = new Validator();
protected Image imageMacro = MakeUIImages.getImage(MakeUIImages.IMG_OBJS_MAKEFILE_MACRO);
protected Image imageTarget = MakeUIImages.getImage(MakeUIImages.IMG_OBJS_MAKEFILE_TARGET_RULE);
protected CompletionProposalComparator comparator = new CompletionProposalComparator();
protected IEditorPart fEditor;
protected IWorkingCopyManager fManager;
public MakefileCompletionProcessor(IEditorPart editor) {
fEditor = editor;
fManager = AutomakeEditorFactory.getDefault().getWorkingCopyManager();
}
@Override
public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int documentOffset) {
WordPartDetector wordPart = new WordPartDetector(viewer, documentOffset);
boolean macro = WordPartDetector.inMacro(viewer, documentOffset);
IMakefile makefile = fManager.getWorkingCopy(fEditor.getEditorInput());
IDirective[] statements = null;
if (macro) {
IDirective[] m1 = makefile.getMacroDefinitions();
IDirective[] m2 = makefile.getBuiltinMacroDefinitions();
statements = new IDirective[m1.length + m2.length];
System.arraycopy(m1, 0, statements, 0, m1.length);
System.arraycopy(m2, 0, statements, m1.length, m2.length);
} else {
statements = makefile.getTargetRules();
}
ArrayList<ICompletionProposal> proposalList = new ArrayList<>(statements.length);
// iterate over all the different categories
for (int i = 0; i < statements.length; i++) {
String name = null;
Image image = null;
String infoString = "";//getContentInfoString(name); //$NON-NLS-1$
if (statements[i] instanceof IMacroDefinition) {
name = ((IMacroDefinition) statements[i]).getName();
image = imageMacro;
infoString = ((IMacroDefinition)statements[i]).getValue().toString();
} else if (statements[i] instanceof IRule) {
name = ((IRule) statements[i]).getTarget().toString();
image = imageTarget;
infoString = name;
}
if (name != null && name.startsWith(wordPart.toString())) {
IContextInformation info = new ContextInformation(name, infoString);
String displayString = (name.equals(infoString) ? name : name + " - " + infoString); //$NON-NLS-1$
ICompletionProposal result =
new CompletionProposal(
name,
wordPart.getOffset(),
wordPart.toString().length(),
name.length(),
image,
displayString,
info,
infoString);
proposalList.add(result);
}
}
ICompletionProposal[] proposals = proposalList.toArray(new ICompletionProposal[0]);
Arrays.sort(proposals, comparator);
return proposals;
}
@Override
public IContextInformation[] computeContextInformation(ITextViewer viewer, int documentOffset) {
WordPartDetector wordPart = new WordPartDetector(viewer, documentOffset);
boolean macro = WordPartDetector.inMacro(viewer, documentOffset);
IMakefile makefile = fManager.getWorkingCopy(fEditor.getEditorInput());
ArrayList<String> contextList = new ArrayList<>();
if (macro) {
IMacroDefinition[] statements = makefile.getMacroDefinitions();
for (int i = 0; i < statements.length; i++) {
String name = statements[i].getName();
if (name != null && name.equals(wordPart.toString())) {
String value = statements[i].getValue().toString();
if (value != null && value.length() > 0) {
contextList.add(value);
}
}
}
statements = makefile.getBuiltinMacroDefinitions();
for (int i = 0; i < statements.length; i++) {
String name = statements[i].getName();
if (name != null && name.equals(wordPart.toString())) {
String value = statements[i].getValue().toString();
if (value != null && value.length() > 0) {
contextList.add(value);
}
}
}
}
IContextInformation[] result = new IContextInformation[contextList.size()];
for (int i = 0; i < result.length; i++) {
String context = contextList.get(i);
result[i] = new ContextInformation(imageMacro, wordPart.toString(), context);
}
return result;
}
@Override
public char[] getCompletionProposalAutoActivationCharacters() {
return null;
}
@Override
public char[] getContextInformationAutoActivationCharacters() {
return null;
}
@Override
public String getErrorMessage() {
return null;
}
@Override
public IContextInformationValidator getContextInformationValidator() {
return fValidator;
}
}
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