package org.pdf4j.saxon.style;
import org.pdf4j.saxon.expr.Expression;
import org.pdf4j.saxon.expr.StringLiteral;
import org.pdf4j.saxon.instruct.Block;
import org.pdf4j.saxon.instruct.Executable;
import org.pdf4j.saxon.instruct.Message;
import org.pdf4j.saxon.om.AttributeCollection;
import org.pdf4j.saxon.om.Axis;
import org.pdf4j.saxon.om.StandardNames;
import org.pdf4j.saxon.trans.XPathException;
import org.pdf4j.saxon.value.Whitespace;
/**
* An xsl:message element in the stylesheet. <br>
*/
public final class XSLMessage extends StyleElement {
private Expression terminate = null;
private Expression select = null;
/**
* Determine whether this node is an instruction.
* @return true - it is an instruction
*/
public boolean isInstruction() {
return true;
}
/**
* Determine whether this type of element is allowed to contain a template-body
* @return true: yes, it may contain a template-body
*/
public boolean mayContainSequenceConstructor() {
return true;
}
public void prepareAttributes() throws XPathException {
String terminateAtt = null;
String selectAtt = null;
AttributeCollection atts = getAttributeList();
for (int a=0; a<atts.getLength(); a++) {
int nc = atts.getNameCode(a);
String f = getNamePool().getClarkName(nc);
if (f == StandardNames.TERMINATE) {
terminateAtt = Whitespace.trim(atts.getValue(a));
} else if (f == StandardNames.SELECT) {
selectAtt = atts.getValue(a);
} else {
checkUnknownAttribute(nc);
}
}
if (selectAtt!=null) {
select = makeExpression(selectAtt);
}
if (terminateAtt==null) {
terminateAtt = "no";
}
terminate = makeAttributeValueTemplate(terminateAtt);
if (terminate instanceof StringLiteral) {
String t = ((StringLiteral)terminate).getStringValue();
if (!(t.equals("yes") || t.equals("no"))) {
compileError("terminate must be 'yes' or 'no'", "XTSE0020");
}
}
}
public void validate() throws XPathException {
select = typeCheck("select", select);
terminate = typeCheck("terminate", terminate);
}
public Expression compile(Executable exec) throws XPathException {
Expression b = compileSequenceConstructor(exec, iterateAxis(Axis.CHILD), true);
if (b != null) {
if (select == null) {
select = b;
} else {
select = Block.makeBlock(select, b);
select.setLocationId(
allocateLocationId(getSystemId(), getLineNumber()));
}
}
if (select == null) {
select = new StringLiteral("xsl:message (no content)");
}
Message inst = new Message(select, terminate);
return inst;
}
}
//
// The contents of this file are subject to the Mozilla Public License Version 1.0 (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.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is Michael H. Kay.
//
// Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
// Contributor(s): none.
//