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/*
* ====================================================================
* 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.poi.xslf.model;
import static org.apache.poi.ooxml.util.XPathHelper.selectProperty;
import static org.apache.poi.xssf.usermodel.XSSFRelation.NS_DRAWINGML;
import static org.apache.poi.xssf.usermodel.XSSFRelation.NS_PRESENTATIONML;
import java.util.function.Consumer;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamReader;
import org.apache.poi.util.Internal;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFShape;
import org.apache.poi.xslf.usermodel.XSLFSheet;
import org.apache.poi.xslf.usermodel.XSLFSlideMaster;
import org.apache.poi.xslf.usermodel.XSLFTextParagraph;
import org.apache.xmlbeans.XmlException;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextListStyle;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextParagraph;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextParagraphProperties;
@Internal
public final class ParagraphPropertyFetcher<T> extends PropertyFetcher<T> {
public interface ParaPropFetcher<S> {
void fetch (CTTextParagraphProperties props, Consumer<S> val);
}
static final String PML_NS = NS_PRESENTATIONML;
static final String DML_NS = NS_DRAWINGML;
private static final QName[] TX_BODY = { new QName(PML_NS, "txBody") };
private static final QName[] LST_STYLE = { new QName(DML_NS, "lstStyle") };
private final XSLFTextParagraph para;
int _level;
private final ParaPropFetcher<T> fetcher;
public ParagraphPropertyFetcher(XSLFTextParagraph para, ParaPropFetcher<T> fetcher) {
this.para = para;
_level = para.getIndentLevel();
this.fetcher = fetcher;
}
public boolean fetch(XSLFShape shape) {
// this is only called when propagating to parent styles
try {
fetchProp(select(shape, _level));
} catch (XmlException ignored) {
}
return isSet();
}
public T fetchProperty(XSLFShape shape) {
final XSLFSheet sheet = shape.getSheet();
fetchParagraphProp();
if (!(sheet instanceof XSLFSlideMaster)) {
fetchShapeProp(shape);
fetchThemeProp(shape);
}
fetchMasterProp();
return isSet() ? getValue() : null;
}
private void fetchParagraphProp() {
fetchProp(para.getXmlObject().getPPr());
}
private void fetchShapeProp(XSLFShape shape) {
if (!isSet()) {
shape.fetchShapeProperty(this);
}
}
private void fetchThemeProp(XSLFShape shape) {
if (!isSet()) {
fetchProp(getThemeProps(shape, _level));
}
}
private void fetchMasterProp() {
// defaults for placeholders are defined in the slide master
// TODO: determine master shape
if (!isSet()) {
fetchProp(para.getDefaultMasterStyle());
}
}
private void fetchProp(CTTextParagraphProperties props) {
if (props != null) {
fetcher.fetch(props, this::setValue);
}
}
static CTTextParagraphProperties select(XSLFShape shape, int level) throws XmlException {
QName[] lvlProp = { new QName(DML_NS, "lvl" + (level + 1) + "pPr") };
return selectProperty(shape.getXmlObject(),
CTTextParagraphProperties.class, ParagraphPropertyFetcher::parse, TX_BODY, LST_STYLE, lvlProp);
}
static CTTextParagraphProperties parse(XMLStreamReader reader) throws XmlException {
CTTextParagraph para = CTTextParagraph.Factory.parse(reader);
return (para != null && para.isSetPPr()) ? para.getPPr() : null;
}
static CTTextParagraphProperties getThemeProps(XSLFShape shape, int _level) {
if (shape.isPlaceholder()) {
return null;
}
// if it is a plain text box then take defaults from presentation.xml
@SuppressWarnings("resource")
final XMLSlideShow ppt = shape.getSheet().getSlideShow();
CTTextListStyle dts = ppt.getCTPresentation().getDefaultTextStyle();
if (dts == null) {
return null;
}
switch (_level) {
case 0:
return dts.getLvl1PPr();
case 1:
return dts.getLvl2PPr();
case 2:
return dts.getLvl3PPr();
case 3:
return dts.getLvl4PPr();
case 4:
return dts.getLvl5PPr();
case 5:
return dts.getLvl6PPr();
case 6:
return dts.getLvl7PPr();
case 7:
return dts.getLvl8PPr();
case 8:
return dts.getLvl9PPr();
default:
return null;
}
}
}
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