/*******************************************************************************
 * Copyright (c) 2005, 2017 IBM Corporation and others.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 * 
 * SPDX-License-Identifier: EPL-2.0
 *
 *******************************************************************************/
package org.eclipse.dltk.ruby.internal.ui.text.completion;

import org.eclipse.dltk.core.CompletionProposal;
import org.eclipse.dltk.core.IScriptProject;
import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.dltk.ruby.core.RubyNature;
import org.eclipse.dltk.ui.text.completion.IScriptCompletionProposal;
import org.eclipse.dltk.ui.text.completion.ScriptCompletionProposal;
import org.eclipse.dltk.ui.text.completion.ScriptCompletionProposalCollector;
import org.eclipse.swt.graphics.Image;

public class RubyCompletionProposalCollector extends
		ScriptCompletionProposalCollector {

	protected final static char[] VAR_TRIGGER = new char[] { '\t', ' ', '=',
			';', '.' };

	@Override
	protected char[] getVarTrigger() {
		return VAR_TRIGGER;
	}

	public RubyCompletionProposalCollector(ISourceModule module) {
		super(module);
	}

	// Specific proposals creation. May be use factory?
	@Override
	protected ScriptCompletionProposal createScriptCompletionProposal(
			String completion, int replaceStart, int length, Image image,
			String displayString, int i) {
		return new RubyCompletionProposal(completion, replaceStart, length,
				image, displayString, i);
	}

	@Override
	protected ScriptCompletionProposal createScriptCompletionProposal(
			String completion, int replaceStart, int length, Image image,
			String displayString, int i, boolean isInDoc) {
		return new RubyCompletionProposal(completion, replaceStart, length,
				image, displayString, i, isInDoc);
	}

	@Override
	protected ScriptCompletionProposal createOverrideCompletionProposal(
			IScriptProject scriptProject, ISourceModule compilationUnit,
			String name, String[] paramTypes, int start, int length,
			String displayName, String completionProposal) {
		return new RubyOverrideCompletionProposal(compilationUnit, name, start, length, displayName,
				completionProposal);
	}

	@Override
	protected IScriptCompletionProposal createKeywordProposal(
			CompletionProposal proposal) {
		String completion = String.valueOf(proposal.getCompletion());
		int start = proposal.getReplaceStart();
		int length = getLength(proposal);
		String label = getLabelProvider().createSimpleLabel(proposal);
		Image img = getImage(getLabelProvider().createImageDescriptor(proposal));
		int relevance = computeRelevance(proposal);
		return createScriptCompletionProposal(completion, start, length, img,
				label, relevance);
	}

	@Override
	protected String getNatureId() {
		return RubyNature.NATURE_ID;
	}
}