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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
package org.openoffice.xmerge.converter.xml.sxc;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Element;
import org.openoffice.xmerge.converter.xml.Style;
import org.openoffice.xmerge.converter.xml.StyleCatalog;
import org.openoffice.xmerge.util.Debug;
import org.openoffice.xmerge.util.TwipsConverter;
/**
* Represents a text {@code Style} in an OpenOffice document.
*/
public class RowStyle extends Style implements Cloneable {
private int rowHeight = 255;
/**
* Constructor for use when going from DOM to client device format.
*
* @param node The <i>style:style</i> {@code Node} containing the
* {@code Style}. (This {@code Node} is assumed have a
* <i>family</i> attribute of <i>text</i>).
* @param sc The {@code StyleCatalog}, which is used for looking up
* ancestor {@code Style} objects.
*/
public RowStyle(Node node, StyleCatalog sc) {
super(node, sc);
// Run through the attributes of this node, saving
// the ones we're interested in.
NamedNodeMap attrNodes = node.getAttributes();
if (attrNodes != null) {
int len = attrNodes.getLength();
for (int i = 0; i < len; i++) {
Node attr = attrNodes.item(i);
handleAttribute(attr.getNodeName(), attr.getNodeValue());
}
}
// Look for children. Only ones we care about are "style:properties"
// nodes. If any are found, recursively traverse them, passing
// along the style element to add properties to.
if (!node.hasChildNodes()) {
return;
}
NodeList children = node.getChildNodes();
int len = children.getLength();
for (int i = 0; i < len; i++) {
Node child = children.item(i);
String nodeName = child.getNodeName();
if (nodeName.equals("style:properties")) {
NamedNodeMap childAttrNodes = child.getAttributes();
if (childAttrNodes != null) {
int nChildAttrNodes = childAttrNodes.getLength();
for (int j = 0; j < nChildAttrNodes; j++) {
Node attr = childAttrNodes.item(j);
handleAttribute(attr.getNodeName(),
attr.getNodeValue());
}
}
}
}
}
/**
* Constructor for use when going from client device format to DOM.
*
* @param name Name of text {@code Style}. Can be {@code null}.
* @param family Family of text {@code Style} (usually <i>text</i>).
* Can be {@code null}.
* @param parent Name of parent text {@code Style}, or {@code null}
* for none.
* @param rowHeight The height of this row.
* @param sc The {@code StyleCatalog}, which is used for looking up
* ancestor {@code Style} objects.
*/
public RowStyle(String name, String family, String parent,int rowHeight, StyleCatalog sc) {
super(name, family, parent, sc);
this.rowHeight=rowHeight;
}
/**
* Returns the height of this row.
*
* @return The height of this row.
*/
public int getRowHeight() {
return rowHeight;
}
/**
* Sets the height of this row.
*
* @param RowHeight The height of this row.
*/
public void setRowHeight(int RowHeight) {
this.rowHeight = RowHeight;
}
/**
* Parse a rowheight in the form {@literal "1.234cm"} to twips.
*
* @param value {@code String} specification to parse.
*
* @return The twips equivalent.
*/
private int parseRowHeight(String value) {
return TwipsConverter.convert2twips(value, 255);
}
/**
* Set an attribute.
*
* @param attr The attribute to set.
* @param value The attribute value to set.
*/
private void handleAttribute(String attr, String value) {
if (attr.equals("style:row-height")) {
rowHeight = parseRowHeight(value);
}
else {
Debug.log(Debug.INFO, "RowStyle Unhandled: " + attr + "=" + value);
}
}
/**
* Return a {@code Style} object corresponding to this one, but with all of
* the inherited information from parent {@code Style} objects filled in.
*
* <p>The object returned will be a new object, not a reference to this
* object, even if it does not need any information added.</p>
*
* @return The {@code StyleCatalog} in which to look up ancestors.
*/
@Override
public Style getResolved() {
// Create a new object to return, which is a clone of this one.
RowStyle resolved = null;
try {
resolved = (RowStyle)this.clone();
} catch (Exception e) {
Debug.log(Debug.ERROR, "Can't clone", e);
}
// Look up the parentStyle. (If there is no style catalog
// specified, we can't do any lookups.)
RowStyle parentStyle = null;
if (sc != null) {
if (parent != null) {
parentStyle = (RowStyle)sc.lookup(parent, family, null,
this.getClass());
if (parentStyle == null)
Debug.log(Debug.ERROR, "parent style lookup of "
+ parent + " failed!");
else
parentStyle = (RowStyle)parentStyle.getResolved();
} else if (!name.equals("DEFAULT_STYLE")) {
parentStyle = (RowStyle)sc.lookup("DEFAULT_STYLE", null,
null, this.getClass());
}
}
// If we found a parent, for any attributes which we don't have
// set, try to get the values from the parent.
if (parentStyle != null) {
parentStyle = (RowStyle)parentStyle.getResolved();
if ((rowHeight == 0) && (parentStyle.getRowHeight() != 0))
resolved.setRowHeight(parentStyle.getRowHeight());
}
return resolved;
}
/**
* Create a new {@code Node} in the {@code Document}, and write this
* {@code Style} to it.
*
* @param parentDoc Parent {@code Document} of the {@code Node} to create.
* @param name Name to use for the new {@code Node} (e.g.
* <i>style:style</i>)
*
* @return Created {@code Node}.
*/
@Override
public Node createNode(org.w3c.dom.Document parentDoc, String name) {
Element node = parentDoc.createElement(name);
writeAttributes(node);
return node;
}
/**
* Return true if {@code style} specifies as much or less than this
* {@code Style}, and nothing it specifies contradicts this {@code Style}.
*
* @param style The {@code Style} to check.
*
* @return {@code true} if {@code style} is a subset, {@code false}
* otherwise.
*/
@Override
public boolean isSubset(Style style) {
if (style.getClass() != this.getClass())
return false;
RowStyle tStyle = (RowStyle)style;
return rowHeight == tStyle.getRowHeight();
}
/**
* Write this {@code Style} object's attributes to a {@code Node} in the
* {@code Document}.
*
* @param node The {@code Node} to add {@code Style} attributes.
*/
private void writeAttributes(Element node) {
if(rowHeight!=0) {
String height = TwipsConverter.twips2cm(rowHeight) + "cm";
node.setAttribute("style:row-height", height);
}
}
}
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