/*FreeMind - A Program for creating and viewing Mindmaps
 *Copyright (C) 2000-2004  Joerg Mueller, Daniel Polansky, Christian Foltin and others.
 *
 *See COPYING for Details
 *
 *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.
 *
 * Created on 27.08.2004
 */


package freemind.modes.mindmapmode.actions;

import freemind.controller.actions.generated.instance.FontSizeNodeAction;
import freemind.controller.actions.generated.instance.XmlAction;
import freemind.main.Tools;
import freemind.modes.MindMap;
import freemind.modes.MindMapNode;
import freemind.modes.mindmapmode.MindMapController;
import freemind.modes.mindmapmode.actions.xml.ActionPair;

/**
 * @author foltin
 * 
 */
public class FontSizeAction extends NodeGeneralAction implements NodeActorXml {

	/** This action is used for all sizes, which have to be set first. */
	private String actionSize;

	/**
     */
	public FontSizeAction(MindMapController modeController) {
		super(modeController, "font_size", null, (NodeActorXml) null);
		addActor(this);
		// default value:
		actionSize = modeController.getFrame().getProperty("defaultfontsize");
	}

	public void actionPerformed(String size) {
		this.actionSize = size;
		super.actionPerformed(null);
	}

	public ActionPair apply(MindMap model, MindMapNode selected) {
		return getActionPair(selected, actionSize);
	}

	public Class getDoActionClass() {
		return FontSizeNodeAction.class;
	}

	/**
     */
	public void setFontSize(MindMapNode node, String fontSizeValue) {
		if (Tools.safeEquals(fontSizeValue, node.getFontSize())) {
			return;
		}
		modeController.doTransaction(
				(String) getValue(NAME), getActionPair(node, fontSizeValue));

	}

	private ActionPair getActionPair(MindMapNode node, String fontSizeValue) {
		FontSizeNodeAction fontSizeAction = createFontSizeNodeAction(node,
				fontSizeValue);
		FontSizeNodeAction undoFontSizeAction = createFontSizeNodeAction(node,
				node.getFontSize());
		return new ActionPair(fontSizeAction, undoFontSizeAction);
	}

	private FontSizeNodeAction createFontSizeNodeAction(MindMapNode node,
			String fontSizeValue) {
		FontSizeNodeAction fontSizeAction = new FontSizeNodeAction();
		fontSizeAction.setNode(getNodeID(node));
		fontSizeAction.setSize(fontSizeValue);
		return fontSizeAction;

	}

	/**
     *
     */

	public void act(XmlAction action) {
		if (action instanceof FontSizeNodeAction) {
			FontSizeNodeAction fontSizeAction = (FontSizeNodeAction) action;
			MindMapNode node = getNodeFromID(fontSizeAction.getNode());
			try {
				int size = Integer.valueOf(fontSizeAction.getSize()).intValue();
				if (!node.getFontSize().equals(fontSizeAction.getSize())) {
					node.setFontSize(size);
					modeController.nodeChanged(node);
				}
			} catch (NumberFormatException e) {
				return;
			}
		}
	}
}