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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.
*/
/* $Id$ */
package org.apache.fop.fo.flow;
// Java
import java.util.List;
// XML
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.xml.sax.SAXParseException;
// FOP
import org.apache.fop.fo.FONode;
import org.apache.fop.layoutmgr.InstreamForeignObjectLM;
import org.apache.fop.fo.FObj;
/**
* The instream-foreign-object flow formatting object.
* This is an atomic inline object that contains
* xml data.
*/
public class InstreamForeignObject extends FObj {
boolean hasNonXSLNamespaceElement = false;
/**
* constructs an instream-foreign-object object (called by Maker).
*
* @param parent the parent formatting object
*/
public InstreamForeignObject(FONode parent) {
super(parent);
}
/**
* @see org.apache.fop.fo.FONode#validateChildNode(Locator, String, String)
* XSL Content Model: one (1) non-XSL namespace child
*/
protected void validateChildNode(Locator loc, String nsURI, String localName)
throws SAXParseException {
if (nsURI == FO_URI) {
invalidChildError(loc, nsURI, localName);
} else if (hasNonXSLNamespaceElement) {
tooManyNodesError(loc, "child element");
} else {
hasNonXSLNamespaceElement = true;
}
}
/**
* Make sure content model satisfied, if so then tell the
* StructureRenderer that we are at the end of the flow.
* @see org.apache.fop.fo.FONode#end
*/
protected void endOfNode() throws SAXParseException {
if (!hasNonXSLNamespaceElement) {
missingChildElementError("one (1) non-XSL namespace child");
}
}
public int computeXOffset (int ipd, int cwidth) {
int xoffset = 0;
int ta = propertyList.get(PR_TEXT_ALIGN).getEnum();
switch (ta) {
case TextAlign.CENTER:
xoffset = (ipd - cwidth) / 2;
break;
case TextAlign.END:
xoffset = ipd - cwidth;
break;
case TextAlign.START:
break;
case TextAlign.JUSTIFY:
default:
break;
}
return xoffset;
}
public int computeYOffset(int bpd, int cheight) {
int yoffset = 0;
int da = propertyList.get(PR_DISPLAY_ALIGN).getEnum();
switch (da) {
case DisplayAlign.BEFORE:
break;
case DisplayAlign.AFTER:
yoffset = bpd - cheight;
break;
case DisplayAlign.CENTER:
yoffset = (bpd - cheight) / 2;
break;
case DisplayAlign.AUTO:
default:
break;
}
return yoffset;
}
/**
* This flow object generates inline areas.
* @see org.apache.fop.fo.FObj#generatesInlineAreas()
* @return true
*/
public boolean generatesInlineAreas() {
return true;
}
/**
* @see org.apache.fop.fo.FObj#addLayoutManager(List)
*/
public void addLayoutManager(List list) {
InstreamForeignObjectLM lm = new InstreamForeignObjectLM(this);
list.add(lm);
}
/**
* @see org.apache.fop.fo.FObj#getName()
*/
public String getName() {
return "fo:instream-foreign-object";
}
/**
* @see org.apache.fop.fo.FObj#getNameId()
*/
public int getNameId() {
return FO_INSTREAM_FOREIGN_OBJECT;
}
}
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