/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.apache.taverna.workbench.ui.views.contextualviews.datalink;

import static java.awt.FlowLayout.LEFT;

import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;

import org.apache.taverna.scufl2.api.core.DataLink;
import org.apache.taverna.workbench.file.FileManager;
import org.apache.taverna.workbench.ui.views.contextualviews.ContextualView;

/**
 * Contextual view for dataflow's datalinks.
 *
 * @author Alex Nenadic
 * @author Alan R Williams
 */
class DatalinkContextualView extends ContextualView {
	private static final long serialVersionUID = -5031256519235454876L;

	private DataLink datalink;
	private JPanel datalinkView;
	@SuppressWarnings("unused")
	private final FileManager fileManager;

	public DatalinkContextualView(DataLink datalink, FileManager fileManager) {
		this.datalink = datalink;
		this.fileManager = fileManager;
		initView();
	}

	@Override
	public JComponent getMainFrame() {
		refreshView();
		return datalinkView;
	}

	@Override
	public String getViewTitle() {
		return "Data link: " + datalink.getReceivesFrom().getName() + " -> " + datalink.getSendsTo().getName();
	}

	@Override
	public void refreshView() {
		datalinkView = new JPanel(new FlowLayout(LEFT));
		datalinkView.setBorder(new EmptyBorder(5,5,5,5));
		JLabel label = new JLabel (getTextForLabel());
		datalinkView.add(label);
	}

	private String getTextForLabel() {
		//FIXME
		// return getTextFromDepth("link", datalink.getResolvedDepth());
		return "Fix DataLink resolved depth";
	}

	private void updatePrediction() {
		//FIXME
		// fileManager.getCurrentDataflow().checkValidity();
	}

	@Override
	@SuppressWarnings("serial")
	public Action getConfigureAction(Frame owner) {
		return new AbstractAction("Update prediction") {
			@Override
			public void actionPerformed(ActionEvent e) {
				updatePrediction();
				refreshView();
			}
		};
	}

	@Override
	public int getPreferredPosition() {
		return 100;
	}
}