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/*
* Copyright (c) 2013, 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
*/
package org.eclipse.cdt.internal.qt.ui;
import java.util.Collection;
import java.util.Collections;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.internal.corext.template.c.CContextType;
import org.eclipse.cdt.internal.corext.template.c.TranslationUnitContext;
import org.eclipse.cdt.internal.corext.template.c.TranslationUnitContextType;
import org.eclipse.cdt.internal.ui.text.template.TemplateEngine.CTemplateProposal;
import org.eclipse.cdt.ui.text.contentassist.ICEditorContentAssistInvocationContext;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.templates.Template;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.ui.texteditor.ITextEditor;
@SuppressWarnings("restriction")
public class QObjectDeclarationCompletion {
private static final String TEMPLATE = "class ${name} : public ${QObject}\n{\nQ_OBJECT\n\n${cursor}\n};";
private final static TranslationUnitContextType context;
static {
context = new CContextType();
context.setId(CContextType.ID);
}
public static Collection<ICompletionProposal> getProposals(ICEditorContentAssistInvocationContext ctx,
IASTName name) {
String token = name.getLastName().toString();
if (token.isEmpty() || !"class".startsWith(token))
return null;
Position position = getPosition(ctx);
if (position == null)
return null;
TranslationUnitContext tuCtx = context.createContext(ctx.getDocument(), position, ctx.getTranslationUnit());
IRegion region = new Region(position.getOffset(), position.getLength());
Template template = new Template("class", "QObject declaration", CContextType.ID, TEMPLATE, true);
return Collections.<ICompletionProposal>singletonList(
new CTemplateProposal(template, tuCtx, region, Activator.getQtLogo()));
}
private static Position getPosition(ICEditorContentAssistInvocationContext context) {
ITextEditor textEditor = context.getEditor().getAdapter(ITextEditor.class);
if (textEditor == null)
return null;
ISelectionProvider selectionProvider = textEditor.getSelectionProvider();
if (selectionProvider == null)
return null;
ISelection selection = selectionProvider.getSelection();
if (!(selection instanceof ITextSelection))
return null;
ITextSelection text = (ITextSelection) selection;
return new Position(text.getOffset(), text.getLength());
}
}
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