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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</code> in an OpenOffice document.
*/
public class ColumnStyle extends Style implements Cloneable {
private int colWidth = 0;
/**
* Constructor for use when going from DOM to client device format.
*
* @param node The <i>style:style</i> <code>Node</code> containing
* the <code>Style</code>. (This <code>Node</code> is
* assumed have a <i>family</i> attribute of <i>text</i>).
* @param sc The <code>StyleCatalog</code>, which is used for
* looking up ancestor <code>Style</code> objects.
*/
public ColumnStyle(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()) {
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</code>. Can be null.
* @param family Family of text <code>Style</code> (usually
* <i>text</i>). Can be null.
* @param parent Name of parent text <code>Style</code>, or null
* for none.
* @param colWidth the width of this column
* @param sc The <code>StyleCatalog</code>, which is used for
* looking up ancestor <code>Style</code> objects.
*/
public ColumnStyle(String name, String family, String parent, int colWidth, StyleCatalog sc) {
super(name, family, parent, sc);
this.colWidth = colWidth;
}
/**
* Returns the width of this column
*
* @return The width of this column.
*/
public int getColWidth() {
return colWidth;
}
/**
* Sets the width of this column
*
* @param colWidth The width of this column.
*/
public void setColWidth(int colWidth) {
this.colWidth = colWidth;
}
/**
* Parse a colwidth in the form "1.234cm" to twips
*
* @param value <code>String</code> specification to parse.
*
* @return The twips equivalent.
*/
private int parseColWidth(String value) {
int width = 255; // Default value
if(value.indexOf("cm")!=-1) {
float widthCM = Float.parseFloat(value.substring(0,value.indexOf("c")));
width = TwipsConverter.cm2twips(widthCM);
} else if(value.indexOf("inch")!=-1) {
float widthInch = Float.parseFloat(value.substring(0,value.indexOf("i")));
width = TwipsConverter.inches2twips(widthInch);
}
return (width);
}
/**
* 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:column-width")) {
colWidth = parseColWidth(value);
}
else {
Debug.log(Debug.INFO, "ColumnStyle Unhandled: " + attr + "=" + value);
}
}
/**
* Return a <code>Style</code> object corresponding to this one,
* but with all of the inherited information from parent
* <code>Style</code> objects filled in. The object returned will
* be a new object, not a reference to this object, even if it does
* not need any information added.
*
* @return The <code>Style</code> in which to look up
* ancestors.
*/
@Override
public Style getResolved() {
// Create a new object to return, which is a clone of this one.
ColumnStyle resolved = null;
try {
resolved = (ColumnStyle)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.)
ColumnStyle parentStyle = null;
if (sc != null) {
if (parent != null) {
parentStyle = (ColumnStyle)sc.lookup(parent, family, null,
this.getClass());
if (parentStyle == null)
Debug.log(Debug.ERROR, "parent style lookup of "
+ parent + " failed!");
else
parentStyle = (ColumnStyle)parentStyle.getResolved();
} else if (!name.equals("DEFAULT_STYLE")) {
parentStyle = (ColumnStyle)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 = (ColumnStyle)parentStyle.getResolved();
if ((colWidth == 0) && (parentStyle.getColWidth() != 0))
resolved.setColWidth(parentStyle.getColWidth());
}
return resolved;
}
/**
* Create a new <code>Node</code> in the <code>Document</code>, and
* write this <code>Style</code> to it.
*
* @param parentDoc Parent <code>Document</code> of the
* <code>Node</code> to create.
* @param name Name to use for the new <code>Node</code> (e.g.
* <i>style:style</i>)
*
* @return Created <code>Node</code>.
*/
@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</code> specifies as much or less
* than this <code>Style</code>, and nothing it specifies
* contradicts this <code>Style</code>.
*
* @param style The <code>Style</code> to check.
*
* @return true if <code>style</code> is a subset, false
* otherwise.
*/
@Override
public boolean isSubset(Style style) {
if (style.getClass() != this.getClass())
return false;
ColumnStyle tStyle = (ColumnStyle)style;
if(colWidth!=tStyle.getColWidth())
return false;
return true;
}
/**
* Write this <code>Style</code> object's attributes to a
* <code>Node</code> in the <code>Document</code>.
*
* @param node The <code>Node</code> to add <code>Style</code>
* attributes.
*/
private void writeAttributes(Element node) {
if(colWidth!=0) {
String width = TwipsConverter.twips2cm(colWidth) + "cm";
node.setAttribute("style:column-width", width);
}
}
}
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