/*
* {{{ header & license
* Copyright (c) 2005 Wisconsin Court System
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.xhtmlrenderer.layout;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.xhtmlrenderer.css.newmatch.CascadedStyle;
import org.xhtmlrenderer.css.style.CalculatedStyle;
/**
* A managed list of {@link CalculatedStyle} objects. It is used when keeping
* track of the styles which apply to a :first-line or :first-letter pseudo
* element.
*/
public class StyleTracker {
private List _styles = new ArrayList();
public void addStyle(CascadedStyle style) {
_styles.add(style);
}
public void removeLast() {
if (_styles.size() != 0) {
_styles.remove(_styles.size()-1);
}
}
public boolean hasStyles() {
return _styles.size() != 0;
}
public void clearStyles() {
_styles.clear();
}
public CalculatedStyle deriveAll(CalculatedStyle start) {
CalculatedStyle result = start;
for (Iterator i = getStyles().iterator(); i.hasNext(); ) {
result = result.deriveStyle((CascadedStyle)i.next());
}
return result;
}
public List getStyles() {
return _styles;
}
public StyleTracker copyOf() {
StyleTracker result = new StyleTracker();
result._styles.addAll(this._styles);
return result;
}
}