/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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.
*
* Copyright (c) 2006 - 2013 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.css.resolver.values.computed.fonts;
import org.pentaho.reporting.libraries.base.util.DebugLog;
import org.pentaho.reporting.libraries.css.dom.DocumentContext;
import org.pentaho.reporting.libraries.css.dom.LayoutElement;
import org.pentaho.reporting.libraries.css.dom.LayoutOutputMetaData;
import org.pentaho.reporting.libraries.css.dom.LayoutStyle;
import org.pentaho.reporting.libraries.css.keys.font.FontFamilyValues;
import org.pentaho.reporting.libraries.css.keys.font.FontStyleKeys;
import org.pentaho.reporting.libraries.css.model.StyleKey;
import org.pentaho.reporting.libraries.css.resolver.values.computed.ConstantsResolveHandler;
import org.pentaho.reporting.libraries.css.values.CSSConstant;
import org.pentaho.reporting.libraries.css.values.CSSStringValue;
import org.pentaho.reporting.libraries.css.values.CSSValue;
import org.pentaho.reporting.libraries.css.values.CSSValueList;
/**
* Creation-Date: 18.12.2005, 16:35:28
*
* @author Thomas Morgner
*/
public class FontFamilyResolveHandler extends ConstantsResolveHandler
{
public FontFamilyResolveHandler()
{
addNormalizeValue(FontFamilyValues.CURSIVE);
addNormalizeValue(FontFamilyValues.FANTASY);
addNormalizeValue(FontFamilyValues.MONOSPACE);
addNormalizeValue(FontFamilyValues.SANS_SERIF);
addNormalizeValue(FontFamilyValues.SERIF);
}
/**
* This indirectly defines the resolve order. The higher the order, the more
* dependent is the resolver on other resolvers to be complete.
*
* @return
*/
public StyleKey[] getRequiredStyles()
{
return new StyleKey[]{
FontStyleKeys.FONT_WEIGHT, FontStyleKeys.FONT_VARIANT,
FontStyleKeys.FONT_SMOOTH, FontStyleKeys.FONT_STRETCH
};
}
public void resolve(final DocumentContext process,
final LayoutElement currentNode,
final StyleKey key)
{
//Log.debug ("Processing: " + currentNode);
final LayoutStyle layoutContext = currentNode.getLayoutStyle();
final LayoutOutputMetaData outputMetaData = process.getOutputMetaData();
final CSSValue cssValue = layoutContext.getValue(key);
if (cssValue instanceof CSSValueList)
{
final CSSValueList list = (CSSValueList) cssValue;
for (int i = 0; i < list.getLength(); i++)
{
final CSSValue item = list.getItem(i);
if (item instanceof CSSConstant)
{
final CSSConstant c = (CSSConstant) lookupValue((CSSConstant) item);
final CSSValue family = outputMetaData.getNormalizedFontFamilyName(c);
if (family != null)
{
layoutContext.setValue(key, family);
return;
}
// Ignore, although this is not ok.
DebugLog.log("Invalid state after setting predefined font family.");
}
else if (item instanceof CSSStringValue)
{
final CSSStringValue sval = (CSSStringValue) item;
final CSSValue value = process.getOutputMetaData().getNormalizedFontFamilyName(sval);
if (value != null)
{
layoutContext.setValue(key, value);
return;
}
}
}
}
else if (cssValue instanceof CSSConstant)
{
if (FontFamilyValues.NONE.equals(cssValue))
{
// that means: No text at all.
return;
}
}
layoutContext.setValue(key, outputMetaData.getDefaultFontFamily());
}
}