/*
 * Projrct F-11 - Web SCADA for Java Copyright (C) 2002 Freedom, Inc. All Rights
 * Reserved. This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version. This program is distributed in the hope that it
 * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details. You should have received a copy of the GNU
 * General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */
package org.F11.scada.parser.graph.bargraph2;

import java.awt.Color;
import java.util.Stack;

import org.F11.scada.applet.graph.bargraph2.BarFocus;
import org.F11.scada.applet.graph.bargraph2.BarGraph2View;
import org.F11.scada.applet.symbol.ColorFactory;
import org.F11.scada.parser.State;
import org.F11.scada.parser.Util.DisplayState;
import org.apache.log4j.Logger;
import org.xml.sax.Attributes;

public class BarFocusState implements State {
	private static Logger logger = Logger.getLogger(BarFocusState.class);

	private BarGraph2View view;
	private BarFocus focus;

	/**
	 * 状態を表すオブジェクトを生成します。
	 */
	public BarFocusState(String tagName, Attributes atts, BarGraph2View view,
			int barCount) {
		this.view = view;
		focus = new BarFocus(barCount);
		int top = Integer.parseInt(atts.getValue("top"));
		int left = Integer.parseInt(atts.getValue("left"));
		int bottom = Integer.parseInt(atts.getValue("botom"));
		int right = Integer.parseInt(atts.getValue("right"));
		focus.setOversize(top, left, bottom, right);
		Color color = ColorFactory.getColor(atts.getValue("color"));
		if (color == null) {
			throw new IllegalArgumentException("Undefine color : "
					+ atts.getValue("value"));
		}
		focus.setColor(color);
		String dash_line = atts.getValue("dash_line");
		String dash_gap = atts.getValue("dash_gap");
		if (!isNullstring(dash_line) && !isNullstring(dash_gap)) {
			focus.setDash(Float.parseFloat(dash_line),
					Float.parseFloat(dash_gap));
		}
	}

	public void add(String tagName, Attributes atts, Stack stack) {
		if (logger.isDebugEnabled()) {
			logger.debug("Push : " + DisplayState.toString(tagName, stack));
		}
		if (tagName.equals("datetime")) {
			stack.push(new BarFocusDateTimesState(tagName, atts, focus));
		} else if (tagName.equals("values")) {
			stack.push(new BarFocusValuesState(tagName, atts, focus));
		} else {
			logger.debug("tagName : " + tagName);
		}
	}
	public void end(String tagName, Stack stack) {
		if (tagName.equals("focus")) {
			view.setBarFocus(focus);
			stack.pop();
		} else {
			logger.debug("tagName : " + tagName);
		}
	}

	private boolean isNullstring(String s) {
		return (s == null || "".equals(s));
	}

}
